--- /dev/null
+From cf8fa97911a7dcc1ff2a3fb35fcb9fd06212f6e4 Mon Sep 17 00:00:00 2001
+From: Hans de Goede <hdegoede@redhat.com>
+Date: Mon, 7 Jan 2019 17:08:21 +0100
+Subject: ACPI / video: Extend chassis-type detection with a "Lunch Box" check
+
+[ Upstream commit d693c008e3ca04db5916ff72e68ce661888a913b ]
+
+Commit 53fa1f6e8a59 ("ACPI / video: Only default only_lcd to true on
+Win8-ready _desktops_") introduced chassis type detection, limiting the
+lcd_only check for the backlight to devices where the chassis-type
+indicates their is no builtin LCD panel.
+
+The purpose of the lcd_only check is to avoid advertising a backlight
+interface on desktops, since skylake and newer machines seem to always
+have a backlight interface even if there is no LCD panel. The limiting
+of this check to desktops only was done to avoid breaking backlight
+support on some laptops which do not have the lcd flag set.
+
+The Fujitsu ESPRIMO Q910 which is a compact (NUC like) desktop machine
+has a chassis type of 0x10 aka "Lunch Box". Without the lcd_only check
+we end up falsely advertising backlight/brightness control on this
+device. This commit extend the dmi_is_desktop check to return true
+for type 0x10 to fix this.
+
+Fixes: 53fa1f6e8a59 ("ACPI / video: Only default only_lcd to true ...")
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/acpi/acpi_video.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c
+index 1ab1460c4a4e..d73afb562ad9 100644
+--- a/drivers/acpi/acpi_video.c
++++ b/drivers/acpi/acpi_video.c
+@@ -2143,6 +2143,7 @@ static bool dmi_is_desktop(void)
+ case 0x05: /* Pizza Box */
+ case 0x06: /* Mini Tower */
+ case 0x07: /* Tower */
++ case 0x10: /* Lunch Box */
+ case 0x11: /* Main Server Chassis */
+ return true;
+ }
+--
+2.19.1
+
--- /dev/null
+From 7eb3de3eaecae41d16b050000f58a6e79d7f07ba Mon Sep 17 00:00:00 2001
+From: Hans de Goede <hdegoede@redhat.com>
+Date: Mon, 7 Jan 2019 17:08:20 +0100
+Subject: ACPI / video: Refactor and fix dmi_is_desktop()
+
+[ Upstream commit cecf3e3e0803462335e25d083345682518097334 ]
+
+This commit refactors the chassis-type detection introduced by
+commit 53fa1f6e8a59 ("ACPI / video: Only default only_lcd to true on
+Win8-ready _desktops_") (where desktop means anything without a builtin
+screen).
+
+The DMI chassis_type is an unsigned integer, so rather then doing a
+whole bunch of string-compares on it, convert it to an int and feed
+the result to a switch case.
+
+Note the switch case uses hex values, this is done because the spec
+uses hex values too. This changes the check for "Main Server Chassis"
+from checking for 11 decimal to 11 hexadecimal, this is a bug fix,
+the original check for 11 decimal was wrong.
+
+Fixes: 53fa1f6e8a59 ("ACPI / video: Only default only_lcd to true ...")
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+[ rjw: Drop redundant return statements ]
+Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/acpi/acpi_video.c | 19 +++++++++++++------
+ 1 file changed, 13 insertions(+), 6 deletions(-)
+
+diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c
+index f0b52266b3ac..1ab1460c4a4e 100644
+--- a/drivers/acpi/acpi_video.c
++++ b/drivers/acpi/acpi_video.c
+@@ -2124,21 +2124,28 @@ static int __init intel_opregion_present(void)
+ return opregion;
+ }
+
++/* Check if the chassis-type indicates there is no builtin LCD panel */
+ static bool dmi_is_desktop(void)
+ {
+ const char *chassis_type;
++ unsigned long type;
+
+ chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
+ if (!chassis_type)
+ return false;
+
+- if (!strcmp(chassis_type, "3") || /* 3: Desktop */
+- !strcmp(chassis_type, "4") || /* 4: Low Profile Desktop */
+- !strcmp(chassis_type, "5") || /* 5: Pizza Box */
+- !strcmp(chassis_type, "6") || /* 6: Mini Tower */
+- !strcmp(chassis_type, "7") || /* 7: Tower */
+- !strcmp(chassis_type, "11")) /* 11: Main Server Chassis */
++ if (kstrtoul(chassis_type, 10, &type) != 0)
++ return false;
++
++ switch (type) {
++ case 0x03: /* Desktop */
++ case 0x04: /* Low Profile Desktop */
++ case 0x05: /* Pizza Box */
++ case 0x06: /* Mini Tower */
++ case 0x07: /* Tower */
++ case 0x11: /* Main Server Chassis */
+ return true;
++ }
+
+ return false;
+ }
+--
+2.19.1
+
--- /dev/null
+From fe9741c330033a0fb003039decd6914747309d60 Mon Sep 17 00:00:00 2001
+From: Takashi Sakamoto <o-takashi@sakamocchi.jp>
+Date: Mon, 28 Jan 2019 20:40:58 +0900
+Subject: ALSA: dice: add support for Solid State Logic Duende Classic/Mini
+
+[ Upstream commit b2e9e1c8810ee05c95f4d55800b8afae70ab01b4 ]
+
+Duende Classic was produced by Solid State Logic in 2006, as a
+first model of Duende DSP series. The following model, Duende Mini
+was produced in 2008. They are designed to receive isochronous
+packets for PCM frames via IEEE 1394 bus, perform signal processing by
+downloaded program, then transfer isochronous packets for converted
+PCM frames.
+
+These two models includes the same embedded board, consists of several
+ICs below:
+ - Texus Instruments Inc, TSB41AB3 for physical layer of IEEE 1394 bus
+ - WaveFront semiconductor, DICE II STD ASIC for link/protocol layer
+ - Altera MAX 3000A CPLD for programs
+ - Analog devices, SHARC ADSP-21363 for signal processing (4 chips)
+
+This commit adds support for the two models to ALSA dice driver. Like
+support for the other devices, packet streaming is just available.
+Userspace applications should be developed if full features became
+available; e.g. program uploader and parameter controller.
+
+$ ./hinawa-config-rom-printer /dev/fw1
+{ 'bus-info': { 'adj': False,
+ 'bmc': False,
+ 'chip_ID': 349771402425,
+ 'cmc': True,
+ 'cyc_clk_acc': 255,
+ 'generation': 1,
+ 'imc': True,
+ 'isc': True,
+ 'link_spd': 2,
+ 'max_ROM': 1,
+ 'max_rec': 512,
+ 'name': '1394',
+ 'node_vendor_ID': 20674,
+ 'pmc': False},
+ 'root-directory': [ ['VENDOR', 20674],
+ ['DESCRIPTOR', 'Solid State Logic'],
+ ['MODEL', 112],
+ ['DESCRIPTOR', 'Duende board'],
+ [ 'NODE_CAPABILITIES',
+ { 'addressing': {'64': True, 'fix': True, 'prv': True},
+ 'misc': {'int': False, 'ms': False, 'spt': True},
+ 'state': { 'atn': False,
+ 'ded': False,
+ 'drq': True,
+ 'elo': False,
+ 'init': False,
+ 'lst': True,
+ 'off': False},
+ 'testing': {'bas': False, 'ext': False}}],
+ [ 'UNIT',
+ [ ['SPECIFIER_ID', 20674],
+ ['VERSION', 1],
+ ['MODEL', 112],
+ ['DESCRIPTOR', 'Duende board']]]]}
+
+Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
+Signed-off-by: Takashi Iwai <tiwai@suse.de>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ sound/firewire/dice/dice.c | 12 +++++++++++-
+ 1 file changed, 11 insertions(+), 1 deletion(-)
+
+diff --git a/sound/firewire/dice/dice.c b/sound/firewire/dice/dice.c
+index 774eb2205668..3d600f498914 100644
+--- a/sound/firewire/dice/dice.c
++++ b/sound/firewire/dice/dice.c
+@@ -18,6 +18,7 @@ MODULE_LICENSE("GPL v2");
+ #define OUI_ALESIS 0x000595
+ #define OUI_MAUDIO 0x000d6c
+ #define OUI_MYTEK 0x001ee8
++#define OUI_SSL 0x0050c2 // Actually ID reserved by IEEE.
+
+ #define DICE_CATEGORY_ID 0x04
+ #define WEISS_CATEGORY_ID 0x00
+@@ -216,7 +217,7 @@ static int dice_probe(struct fw_unit *unit,
+ struct snd_dice *dice;
+ int err;
+
+- if (!entry->driver_data) {
++ if (!entry->driver_data && entry->vendor_id != OUI_SSL) {
+ err = check_dice_category(unit);
+ if (err < 0)
+ return -ENODEV;
+@@ -382,6 +383,15 @@ static const struct ieee1394_device_id dice_id_table[] = {
+ .model_id = 0x000002,
+ .driver_data = (kernel_ulong_t)snd_dice_detect_mytek_formats,
+ },
++ // Solid State Logic, Duende Classic and Mini.
++ // NOTE: each field of GUID in config ROM is not compliant to standard
++ // DICE scheme.
++ {
++ .match_flags = IEEE1394_MATCH_VENDOR_ID |
++ IEEE1394_MATCH_MODEL_ID,
++ .vendor_id = OUI_SSL,
++ .model_id = 0x000070,
++ },
+ {
+ .match_flags = IEEE1394_MATCH_VERSION,
+ .version = DICE_INTERFACE,
+--
+2.19.1
+
--- /dev/null
+From 069b63a147ed5ed28d6d7f88e25bd8a6d45977ca Mon Sep 17 00:00:00 2001
+From: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
+Date: Fri, 8 Feb 2019 17:29:53 -0600
+Subject: ALSA: PCM: check if ops are defined before suspending PCM
+
+[ Upstream commit d9c0b2afe820fa3b3f8258a659daee2cc71ca3ef ]
+
+BE dai links only have internal PCM's and their substream ops may
+not be set. Suspending these PCM's will result in their
+ ops->trigger() being invoked and cause a kernel oops.
+So skip suspending PCM's if their ops are NULL.
+
+[ NOTE: this change is required now for following the recent PCM core
+ change to get rid of snd_pcm_suspend() call. Since DPCM BE takes
+ the runtime carried from FE while keeping NULL ops, it can hit this
+ bug. See details at:
+ https://github.com/thesofproject/linux/pull/582
+ -- tiwai ]
+
+Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
+Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
+Signed-off-by: Takashi Iwai <tiwai@suse.de>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ sound/core/pcm_native.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
+index b67f6fe08a1b..e08c6c6ca029 100644
+--- a/sound/core/pcm_native.c
++++ b/sound/core/pcm_native.c
+@@ -1513,6 +1513,14 @@ int snd_pcm_suspend_all(struct snd_pcm *pcm)
+ /* FIXME: the open/close code should lock this as well */
+ if (substream->runtime == NULL)
+ continue;
++
++ /*
++ * Skip BE dai link PCM's that are internal and may
++ * not have their substream ops set.
++ */
++ if (!substream->ops)
++ continue;
++
+ err = snd_pcm_suspend(substream);
+ if (err < 0 && err != -EBUSY)
+ return err;
+--
+2.19.1
+
--- /dev/null
+From e4abe8a88d880d81f78573634b9f2e4ff476006d Mon Sep 17 00:00:00 2001
+From: Vladimir Murzin <vladimir.murzin@arm.com>
+Date: Fri, 25 Jan 2019 15:18:37 +0100
+Subject: ARM: 8830/1: NOMMU: Toggle only bits in EXC_RETURN we are really care
+ of
+
+[ Upstream commit 72cd4064fccaae15ab84d40d4be23667402df4ed ]
+
+ARMv8M introduces support for Security extension to M class, among
+other things it affects exception handling, especially, encoding of
+EXC_RETURN.
+
+The new bits have been added:
+
+Bit [6] Secure or Non-secure stack
+Bit [5] Default callee register stacking
+Bit [0] Exception Secure
+
+which conflicts with hard-coded value of EXC_RETURN:
+
+In fact, we only care of few bits:
+
+Bit [3] Mode (0 - Handler, 1 - Thread)
+Bit [2] Stack pointer selection (0 - Main, 1 - Process)
+
+We can toggle only those bits and left other bits as they were on
+exception entry.
+
+It is basically, what patch does - saves EXC_RETURN when we do
+transition form Thread to Handler mode (it is first svc), so later
+saved value is used instead of EXC_RET_THREADMODE_PROCESSSTACK.
+
+Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
+Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ arch/arm/include/asm/v7m.h | 2 +-
+ arch/arm/kernel/entry-header.S | 3 ++-
+ arch/arm/kernel/entry-v7m.S | 4 ++++
+ arch/arm/mm/proc-v7m.S | 3 +++
+ 4 files changed, 10 insertions(+), 2 deletions(-)
+
+diff --git a/arch/arm/include/asm/v7m.h b/arch/arm/include/asm/v7m.h
+index 187ccf6496ad..2cb00d15831b 100644
+--- a/arch/arm/include/asm/v7m.h
++++ b/arch/arm/include/asm/v7m.h
+@@ -49,7 +49,7 @@
+ * (0 -> msp; 1 -> psp). Bits [1:0] are fixed to 0b01.
+ */
+ #define EXC_RET_STACK_MASK 0x00000004
+-#define EXC_RET_THREADMODE_PROCESSSTACK 0xfffffffd
++#define EXC_RET_THREADMODE_PROCESSSTACK (3 << 2)
+
+ /* Cache related definitions */
+
+diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S
+index 773424843d6e..62db1c9746cb 100644
+--- a/arch/arm/kernel/entry-header.S
++++ b/arch/arm/kernel/entry-header.S
+@@ -127,7 +127,8 @@
+ */
+ .macro v7m_exception_slow_exit ret_r0
+ cpsid i
+- ldr lr, =EXC_RET_THREADMODE_PROCESSSTACK
++ ldr lr, =exc_ret
++ ldr lr, [lr]
+
+ @ read original r12, sp, lr, pc and xPSR
+ add r12, sp, #S_IP
+diff --git a/arch/arm/kernel/entry-v7m.S b/arch/arm/kernel/entry-v7m.S
+index abcf47848525..19d2dcd6530d 100644
+--- a/arch/arm/kernel/entry-v7m.S
++++ b/arch/arm/kernel/entry-v7m.S
+@@ -146,3 +146,7 @@ ENTRY(vector_table)
+ .rept CONFIG_CPU_V7M_NUM_IRQ
+ .long __irq_entry @ External Interrupts
+ .endr
++ .align 2
++ .globl exc_ret
++exc_ret:
++ .space 4
+diff --git a/arch/arm/mm/proc-v7m.S b/arch/arm/mm/proc-v7m.S
+index 47a5acc64433..92e84181933a 100644
+--- a/arch/arm/mm/proc-v7m.S
++++ b/arch/arm/mm/proc-v7m.S
+@@ -139,6 +139,9 @@ __v7m_setup_cont:
+ cpsie i
+ svc #0
+ 1: cpsid i
++ ldr r0, =exc_ret
++ orr lr, lr, #EXC_RET_THREADMODE_PROCESSSTACK
++ str lr, [r0]
+ ldmia sp, {r0-r3, r12}
+ str r5, [r12, #11 * 4] @ restore the original SVC vector entry
+ mov lr, r6 @ restore LR
+--
+2.19.1
+
--- /dev/null
+From 1fa4dda7cd99faf33213c06b4a85a78566d44e27 Mon Sep 17 00:00:00 2001
+From: Nathan Chancellor <natechancellor@gmail.com>
+Date: Sat, 2 Feb 2019 03:34:36 +0100
+Subject: ARM: 8833/1: Ensure that NEON code always compiles with Clang
+
+[ Upstream commit de9c0d49d85dc563549972edc5589d195cd5e859 ]
+
+While building arm32 allyesconfig, I ran into the following errors:
+
+ arch/arm/lib/xor-neon.c:17:2: error: You should compile this file with
+ '-mfloat-abi=softfp -mfpu=neon'
+
+ In file included from lib/raid6/neon1.c:27:
+ /home/nathan/cbl/prebuilt/lib/clang/8.0.0/include/arm_neon.h:28:2:
+ error: "NEON support not enabled"
+
+Building V=1 showed NEON_FLAGS getting passed along to Clang but
+__ARM_NEON__ was not getting defined. Ultimately, it boils down to Clang
+only defining __ARM_NEON__ when targeting armv7, rather than armv6k,
+which is the '-march' value for allyesconfig.
+
+>From lib/Basic/Targets/ARM.cpp in the Clang source:
+
+ // This only gets set when Neon instructions are actually available, unlike
+ // the VFP define, hence the soft float and arch check. This is subtly
+ // different from gcc, we follow the intent which was that it should be set
+ // when Neon instructions are actually available.
+ if ((FPU & NeonFPU) && !SoftFloat && ArchVersion >= 7) {
+ Builder.defineMacro("__ARM_NEON", "1");
+ Builder.defineMacro("__ARM_NEON__");
+ // current AArch32 NEON implementations do not support double-precision
+ // floating-point even when it is present in VFP.
+ Builder.defineMacro("__ARM_NEON_FP",
+ "0x" + Twine::utohexstr(HW_FP & ~HW_FP_DP));
+ }
+
+Ard Biesheuvel recommended explicitly adding '-march=armv7-a' at the
+beginning of the NEON_FLAGS definitions so that __ARM_NEON__ always gets
+definined by Clang. This doesn't functionally change anything because
+that code will only run where NEON is supported, which is implicitly
+armv7.
+
+Link: https://github.com/ClangBuiltLinux/linux/issues/287
+
+Suggested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
+Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
+Acked-by: Nicolas Pitre <nico@linaro.org>
+Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
+Reviewed-by: Stefan Agner <stefan@agner.ch>
+Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ Documentation/arm/kernel_mode_neon.txt | 4 ++--
+ arch/arm/lib/Makefile | 2 +-
+ arch/arm/lib/xor-neon.c | 2 +-
+ lib/raid6/Makefile | 2 +-
+ 4 files changed, 5 insertions(+), 5 deletions(-)
+
+diff --git a/Documentation/arm/kernel_mode_neon.txt b/Documentation/arm/kernel_mode_neon.txt
+index 525452726d31..b9e060c5b61e 100644
+--- a/Documentation/arm/kernel_mode_neon.txt
++++ b/Documentation/arm/kernel_mode_neon.txt
+@@ -6,7 +6,7 @@ TL;DR summary
+ * Use only NEON instructions, or VFP instructions that don't rely on support
+ code
+ * Isolate your NEON code in a separate compilation unit, and compile it with
+- '-mfpu=neon -mfloat-abi=softfp'
++ '-march=armv7-a -mfpu=neon -mfloat-abi=softfp'
+ * Put kernel_neon_begin() and kernel_neon_end() calls around the calls into your
+ NEON code
+ * Don't sleep in your NEON code, and be aware that it will be executed with
+@@ -87,7 +87,7 @@ instructions appearing in unexpected places if no special care is taken.
+ Therefore, the recommended and only supported way of using NEON/VFP in the
+ kernel is by adhering to the following rules:
+ * isolate the NEON code in a separate compilation unit and compile it with
+- '-mfpu=neon -mfloat-abi=softfp';
++ '-march=armv7-a -mfpu=neon -mfloat-abi=softfp';
+ * issue the calls to kernel_neon_begin(), kernel_neon_end() as well as the calls
+ into the unit containing the NEON code from a compilation unit which is *not*
+ built with the GCC flag '-mfpu=neon' set.
+diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile
+index ad25fd1872c7..0bff0176db2c 100644
+--- a/arch/arm/lib/Makefile
++++ b/arch/arm/lib/Makefile
+@@ -39,7 +39,7 @@ $(obj)/csumpartialcopy.o: $(obj)/csumpartialcopygeneric.S
+ $(obj)/csumpartialcopyuser.o: $(obj)/csumpartialcopygeneric.S
+
+ ifeq ($(CONFIG_KERNEL_MODE_NEON),y)
+- NEON_FLAGS := -mfloat-abi=softfp -mfpu=neon
++ NEON_FLAGS := -march=armv7-a -mfloat-abi=softfp -mfpu=neon
+ CFLAGS_xor-neon.o += $(NEON_FLAGS)
+ obj-$(CONFIG_XOR_BLOCKS) += xor-neon.o
+ endif
+diff --git a/arch/arm/lib/xor-neon.c b/arch/arm/lib/xor-neon.c
+index 2c40aeab3eaa..c691b901092f 100644
+--- a/arch/arm/lib/xor-neon.c
++++ b/arch/arm/lib/xor-neon.c
+@@ -14,7 +14,7 @@
+ MODULE_LICENSE("GPL");
+
+ #ifndef __ARM_NEON__
+-#error You should compile this file with '-mfloat-abi=softfp -mfpu=neon'
++#error You should compile this file with '-march=armv7-a -mfloat-abi=softfp -mfpu=neon'
+ #endif
+
+ /*
+diff --git a/lib/raid6/Makefile b/lib/raid6/Makefile
+index 7ed43eaa02ef..5e0d55c54100 100644
+--- a/lib/raid6/Makefile
++++ b/lib/raid6/Makefile
+@@ -40,7 +40,7 @@ endif
+ ifeq ($(CONFIG_KERNEL_MODE_NEON),y)
+ NEON_FLAGS := -ffreestanding
+ ifeq ($(ARCH),arm)
+-NEON_FLAGS += -mfloat-abi=softfp -mfpu=neon
++NEON_FLAGS += -march=armv7-a -mfloat-abi=softfp -mfpu=neon
+ endif
+ CFLAGS_recov_neon_inner.o += $(NEON_FLAGS)
+ ifeq ($(ARCH),arm64)
+--
+2.19.1
+
--- /dev/null
+From aba9b9930c12418dad8f189386f0f89a14633408 Mon Sep 17 00:00:00 2001
+From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+Date: Wed, 13 Feb 2019 17:14:42 +0100
+Subject: ARM: 8840/1: use a raw_spinlock_t in unwind
+
+[ Upstream commit 74ffe79ae538283bbf7c155e62339f1e5c87b55a ]
+
+Mostly unwind is done with irqs enabled however SLUB may call it with
+irqs disabled while creating a new SLUB cache.
+
+I had system freeze while loading a module which called
+kmem_cache_create() on init. That means SLUB's __slab_alloc() disabled
+interrupts and then
+
+->new_slab_objects()
+ ->new_slab()
+ ->setup_object()
+ ->setup_object_debug()
+ ->init_tracking()
+ ->set_track()
+ ->save_stack_trace()
+ ->save_stack_trace_tsk()
+ ->walk_stackframe()
+ ->unwind_frame()
+ ->unwind_find_idx()
+ =>spin_lock_irqsave(&unwind_lock);
+
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ arch/arm/kernel/unwind.c | 14 +++++++-------
+ 1 file changed, 7 insertions(+), 7 deletions(-)
+
+diff --git a/arch/arm/kernel/unwind.c b/arch/arm/kernel/unwind.c
+index 0bee233fef9a..314cfb232a63 100644
+--- a/arch/arm/kernel/unwind.c
++++ b/arch/arm/kernel/unwind.c
+@@ -93,7 +93,7 @@ extern const struct unwind_idx __start_unwind_idx[];
+ static const struct unwind_idx *__origin_unwind_idx;
+ extern const struct unwind_idx __stop_unwind_idx[];
+
+-static DEFINE_SPINLOCK(unwind_lock);
++static DEFINE_RAW_SPINLOCK(unwind_lock);
+ static LIST_HEAD(unwind_tables);
+
+ /* Convert a prel31 symbol to an absolute address */
+@@ -201,7 +201,7 @@ static const struct unwind_idx *unwind_find_idx(unsigned long addr)
+ /* module unwind tables */
+ struct unwind_table *table;
+
+- spin_lock_irqsave(&unwind_lock, flags);
++ raw_spin_lock_irqsave(&unwind_lock, flags);
+ list_for_each_entry(table, &unwind_tables, list) {
+ if (addr >= table->begin_addr &&
+ addr < table->end_addr) {
+@@ -213,7 +213,7 @@ static const struct unwind_idx *unwind_find_idx(unsigned long addr)
+ break;
+ }
+ }
+- spin_unlock_irqrestore(&unwind_lock, flags);
++ raw_spin_unlock_irqrestore(&unwind_lock, flags);
+ }
+
+ pr_debug("%s: idx = %p\n", __func__, idx);
+@@ -529,9 +529,9 @@ struct unwind_table *unwind_table_add(unsigned long start, unsigned long size,
+ tab->begin_addr = text_addr;
+ tab->end_addr = text_addr + text_size;
+
+- spin_lock_irqsave(&unwind_lock, flags);
++ raw_spin_lock_irqsave(&unwind_lock, flags);
+ list_add_tail(&tab->list, &unwind_tables);
+- spin_unlock_irqrestore(&unwind_lock, flags);
++ raw_spin_unlock_irqrestore(&unwind_lock, flags);
+
+ return tab;
+ }
+@@ -543,9 +543,9 @@ void unwind_table_del(struct unwind_table *tab)
+ if (!tab)
+ return;
+
+- spin_lock_irqsave(&unwind_lock, flags);
++ raw_spin_lock_irqsave(&unwind_lock, flags);
+ list_del(&tab->list);
+- spin_unlock_irqrestore(&unwind_lock, flags);
++ raw_spin_unlock_irqrestore(&unwind_lock, flags);
+
+ kfree(tab);
+ }
+--
+2.19.1
+
--- /dev/null
+From 2b4727b4de479d31f5255c5f77526d29fa5e0047 Mon Sep 17 00:00:00 2001
+From: Russell King <rmk+kernel@armlinux.org.uk>
+Date: Tue, 10 Apr 2018 11:35:36 +0100
+Subject: ARM: avoid Cortex-A9 livelock on tight dmb loops
+
+[ Upstream commit 5388a5b82199facacd3d7ac0d05aca6e8f902fed ]
+
+machine_crash_nonpanic_core() does this:
+
+ while (1)
+ cpu_relax();
+
+because the kernel has crashed, and we have no known safe way to deal
+with the CPU. So, we place the CPU into an infinite loop which we
+expect it to never exit - at least not until the system as a whole is
+reset by some method.
+
+In the absence of erratum 754327, this code assembles to:
+
+ b .
+
+In other words, an infinite loop. When erratum 754327 is enabled,
+this becomes:
+
+1: dmb
+ b 1b
+
+It has been observed that on some systems (eg, OMAP4) where, if a
+crash is triggered, the system tries to kexec into the panic kernel,
+but fails after taking the secondary CPU down - placing it into one
+of these loops. This causes the system to livelock, and the most
+noticable effect is the system stops after issuing:
+
+ Loading crashdump kernel...
+
+to the system console.
+
+The tested as working solution I came up with was to add wfe() to
+these infinite loops thusly:
+
+ while (1) {
+ cpu_relax();
+ wfe();
+ }
+
+which, without 754327 builds to:
+
+1: wfe
+ b 1b
+
+or with 754327 is enabled:
+
+1: dmb
+ wfe
+ b 1b
+
+Adding "wfe" does two things depending on the environment we're running
+under:
+- where we're running on bare metal, and the processor implements
+ "wfe", it stops us spinning endlessly in a loop where we're never
+ going to do any useful work.
+- if we're running in a VM, it allows the CPU to be given back to the
+ hypervisor and rescheduled for other purposes (maybe a different VM)
+ rather than wasting CPU cycles inside a crashed VM.
+
+However, in light of erratum 794072, Will Deacon wanted to see 10 nops
+as well - which is reasonable to cover the case where we have erratum
+754327 enabled _and_ we have a processor that doesn't implement the
+wfe hint.
+
+So, we now end up with:
+
+1: wfe
+ b 1b
+
+when erratum 754327 is disabled, or:
+
+1: dmb
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ wfe
+ b 1b
+
+when erratum 754327 is enabled. We also get the dmb + 10 nop
+sequence elsewhere in the kernel, in terminating loops.
+
+This is reasonable - it means we get the workaround for erratum
+794072 when erratum 754327 is enabled, but still relinquish the dead
+processor - either by placing it in a lower power mode when wfe is
+implemented as such or by returning it to the hypervisior, or in the
+case where wfe is a no-op, we use the workaround specified in erratum
+794072 to avoid the problem.
+
+These as two entirely orthogonal problems - the 10 nops addresses
+erratum 794072, and the wfe is an optimisation that makes the system
+more efficient when crashed either in terms of power consumption or
+by allowing the host/other VMs to make use of the CPU.
+
+I don't see any reason not to use kexec() inside a VM - it has the
+potential to provide automated recovery from a failure of the VMs
+kernel with the opportunity for saving a crashdump of the failure.
+A panic() with a reboot timeout won't do that, and reading the
+libvirt documentation, setting on_reboot to "preserve" won't either
+(the documentation states "The preserve action for an on_reboot event
+is treated as a destroy".) Surely it has to be a good thing to
+avoiding having CPUs spinning inside a VM that is doing no useful
+work.
+
+Acked-by: Will Deacon <will.deacon@arm.com>
+Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ arch/arm/include/asm/barrier.h | 2 ++
+ arch/arm/include/asm/processor.h | 6 +++++-
+ arch/arm/kernel/machine_kexec.c | 5 ++++-
+ arch/arm/kernel/smp.c | 4 +++-
+ arch/arm/mach-omap2/prm_common.c | 4 +++-
+ 5 files changed, 17 insertions(+), 4 deletions(-)
+
+diff --git a/arch/arm/include/asm/barrier.h b/arch/arm/include/asm/barrier.h
+index 69772e742a0a..83ae97c049d9 100644
+--- a/arch/arm/include/asm/barrier.h
++++ b/arch/arm/include/asm/barrier.h
+@@ -11,6 +11,8 @@
+ #define sev() __asm__ __volatile__ ("sev" : : : "memory")
+ #define wfe() __asm__ __volatile__ ("wfe" : : : "memory")
+ #define wfi() __asm__ __volatile__ ("wfi" : : : "memory")
++#else
++#define wfe() do { } while (0)
+ #endif
+
+ #if __LINUX_ARM_ARCH__ >= 7
+diff --git a/arch/arm/include/asm/processor.h b/arch/arm/include/asm/processor.h
+index 1bf65b47808a..cb2a3423b714 100644
+--- a/arch/arm/include/asm/processor.h
++++ b/arch/arm/include/asm/processor.h
+@@ -95,7 +95,11 @@ extern void release_thread(struct task_struct *);
+ unsigned long get_wchan(struct task_struct *p);
+
+ #if __LINUX_ARM_ARCH__ == 6 || defined(CONFIG_ARM_ERRATA_754327)
+-#define cpu_relax() smp_mb()
++#define cpu_relax() \
++ do { \
++ smp_mb(); \
++ __asm__ __volatile__("nop; nop; nop; nop; nop; nop; nop; nop; nop; nop;"); \
++ } while (0)
+ #else
+ #define cpu_relax() barrier()
+ #endif
+diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c
+index dd2eb5f76b9f..76300f3813e8 100644
+--- a/arch/arm/kernel/machine_kexec.c
++++ b/arch/arm/kernel/machine_kexec.c
+@@ -91,8 +91,11 @@ void machine_crash_nonpanic_core(void *unused)
+
+ set_cpu_online(smp_processor_id(), false);
+ atomic_dec(&waiting_for_crash_ipi);
+- while (1)
++
++ while (1) {
+ cpu_relax();
++ wfe();
++ }
+ }
+
+ void crash_smp_send_stop(void)
+diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
+index 1d6f5ea522f4..a3ce7c5365fa 100644
+--- a/arch/arm/kernel/smp.c
++++ b/arch/arm/kernel/smp.c
+@@ -604,8 +604,10 @@ static void ipi_cpu_stop(unsigned int cpu)
+ local_fiq_disable();
+ local_irq_disable();
+
+- while (1)
++ while (1) {
+ cpu_relax();
++ wfe();
++ }
+ }
+
+ static DEFINE_PER_CPU(struct completion *, cpu_completion);
+diff --git a/arch/arm/mach-omap2/prm_common.c b/arch/arm/mach-omap2/prm_common.c
+index 058a37e6d11c..fd6e0671f957 100644
+--- a/arch/arm/mach-omap2/prm_common.c
++++ b/arch/arm/mach-omap2/prm_common.c
+@@ -523,8 +523,10 @@ void omap_prm_reset_system(void)
+
+ prm_ll_data->reset_system();
+
+- while (1)
++ while (1) {
+ cpu_relax();
++ wfe();
++ }
+ }
+
+ /**
+--
+2.19.1
+
--- /dev/null
+From cfd787f01ee5d623ad3d66fdc15d39a0422cd73f Mon Sep 17 00:00:00 2001
+From: Mathieu Malaterre <malat@debian.org>
+Date: Fri, 15 Dec 2017 13:46:39 +0100
+Subject: ARM: dts: lpc32xx: Remove leading 0x and 0s from bindings notation
+
+[ Upstream commit 3e3380d0675d5e20b0af067d60cb947a4348bf9b ]
+
+Improve the DTS files by removing all the leading "0x" and zeros to fix
+the following dtc warnings:
+
+Warning (unit_address_format): Node /XXX unit name should not have leading "0x"
+
+and
+
+Warning (unit_address_format): Node /XXX unit name should not have leading 0s
+
+Converted using the following command:
+
+find . -type f \( -iname *.dts -o -iname *.dtsi \) -exec sed -i -e "s/@\([0-9a-fA-FxX\.;:#]+\)\s*{/@\L\1 {/g" -e "s/@0x\(.*\) {/@\1 {/g" -e "s/@0+\(.*\) {/@\1 {/g" {} +
+
+For simplicity, two sed expressions were used to solve each warnings
+separately.
+
+To make the regex expression more robust a few other issues were resolved,
+namely setting unit-address to lower case, and adding a whitespace before
+the opening curly brace:
+
+https://elinux.org/Device_Tree_Linux#Linux_conventions
+
+This will solve as a side effect warning:
+
+Warning (simple_bus_reg): Node /XXX@<UPPER> simple-bus unit address format error, expected "<lower>"
+
+This is a follow up to commit 4c9847b7375a ("dt-bindings: Remove leading 0x from bindings notation")
+
+Reported-by: David Daney <ddaney@caviumnetworks.com>
+Suggested-by: Rob Herring <robh@kernel.org>
+Signed-off-by: Mathieu Malaterre <malat@debian.org>
+[vzapolskiy: fixed commit message to pass checkpatch.pl test]
+Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ arch/arm/boot/dts/lpc32xx.dtsi | 18 +++++++++---------
+ 1 file changed, 9 insertions(+), 9 deletions(-)
+
+diff --git a/arch/arm/boot/dts/lpc32xx.dtsi b/arch/arm/boot/dts/lpc32xx.dtsi
+index abff7ef7c9cd..4981741377f3 100644
+--- a/arch/arm/boot/dts/lpc32xx.dtsi
++++ b/arch/arm/boot/dts/lpc32xx.dtsi
+@@ -230,7 +230,7 @@
+ status = "disabled";
+ };
+
+- i2s1: i2s@2009C000 {
++ i2s1: i2s@2009c000 {
+ compatible = "nxp,lpc3220-i2s";
+ reg = <0x2009C000 0x1000>;
+ };
+@@ -273,7 +273,7 @@
+ status = "disabled";
+ };
+
+- i2c1: i2c@400A0000 {
++ i2c1: i2c@400a0000 {
+ compatible = "nxp,pnx-i2c";
+ reg = <0x400A0000 0x100>;
+ interrupt-parent = <&sic1>;
+@@ -284,7 +284,7 @@
+ clocks = <&clk LPC32XX_CLK_I2C1>;
+ };
+
+- i2c2: i2c@400A8000 {
++ i2c2: i2c@400a8000 {
+ compatible = "nxp,pnx-i2c";
+ reg = <0x400A8000 0x100>;
+ interrupt-parent = <&sic1>;
+@@ -295,7 +295,7 @@
+ clocks = <&clk LPC32XX_CLK_I2C2>;
+ };
+
+- mpwm: mpwm@400E8000 {
++ mpwm: mpwm@400e8000 {
+ compatible = "nxp,lpc3220-motor-pwm";
+ reg = <0x400E8000 0x78>;
+ status = "disabled";
+@@ -394,7 +394,7 @@
+ #gpio-cells = <3>; /* bank, pin, flags */
+ };
+
+- timer4: timer@4002C000 {
++ timer4: timer@4002c000 {
+ compatible = "nxp,lpc3220-timer";
+ reg = <0x4002C000 0x1000>;
+ interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
+@@ -412,7 +412,7 @@
+ status = "disabled";
+ };
+
+- watchdog: watchdog@4003C000 {
++ watchdog: watchdog@4003c000 {
+ compatible = "nxp,pnx4008-wdt";
+ reg = <0x4003C000 0x1000>;
+ clocks = <&clk LPC32XX_CLK_WDOG>;
+@@ -451,7 +451,7 @@
+ status = "disabled";
+ };
+
+- timer1: timer@4004C000 {
++ timer1: timer@4004c000 {
+ compatible = "nxp,lpc3220-timer";
+ reg = <0x4004C000 0x1000>;
+ interrupts = <17 IRQ_TYPE_LEVEL_LOW>;
+@@ -475,7 +475,7 @@
+ status = "disabled";
+ };
+
+- pwm1: pwm@4005C000 {
++ pwm1: pwm@4005c000 {
+ compatible = "nxp,lpc3220-pwm";
+ reg = <0x4005C000 0x4>;
+ clocks = <&clk LPC32XX_CLK_PWM1>;
+@@ -484,7 +484,7 @@
+ status = "disabled";
+ };
+
+- pwm2: pwm@4005C004 {
++ pwm2: pwm@4005c004 {
+ compatible = "nxp,lpc3220-pwm";
+ reg = <0x4005C004 0x4>;
+ clocks = <&clk LPC32XX_CLK_PWM2>;
+--
+2.19.1
+
--- /dev/null
+From 5672ddcc219522e612159eb083f991018f526054 Mon Sep 17 00:00:00 2001
+From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
+Date: Sat, 29 Dec 2018 15:35:56 +0100
+Subject: ARM: dts: meson8b: fix the Ethernet data line signals in
+ eth_rgmii_pins
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+[ Upstream commit 29f0023d01f063feacfc404f0446905aee4f82ee ]
+
+According to the Odroid-C1+ schematics the Ethernet TXD1 signal is
+routed to GPIOH_5 and the TXD0 signal is routed to GPIOH_6.
+The public S805 datasheet shows that TXD0 can be routed to DIF_2_P and
+TXD1 can be routed to DIF_2_N instead.
+
+The pin groups eth_txd0_0 (GPIOH_6) and eth_txd0_1 (DIF_2_P) are both
+configured as Ethernet TXD0 and TXD1 data lines in meson8b.dtsi. At the
+same time eth_txd1_0 (GPIOH_5) and eth_txd1_1 (DIF_2_N) are configured
+as TXD0 and TXD1 data lines as well.
+This results in a bad Ethernet receive performance. Presumably this is
+due to the eth_txd0 and eth_txd1 signal being routed to the wrong pins.
+As a result of that data can only be transmitted on eth_txd2 and
+eth_txd3. However, I have no scope to fully confirm this assumption.
+
+The vendor u-boot sources for Odroid-C1 use the following Ethernet
+pinmux configuration:
+ SET_CBUS_REG_MASK(PERIPHS_PIN_MUX_6, 0x3f4f);
+ SET_CBUS_REG_MASK(PERIPHS_PIN_MUX_7, 0xf00000);
+This translates to the following pin groups in the mainline kernel:
+- register 6 bit 0: eth_rxd1 (DIF_0_P)
+- register 6 bit 1: eth_rxd0 (DIF_0_N)
+- register 6 bit 2: eth_rx_dv (DIF_1_P)
+- register 6 bit 3: eth_rx_clk (DIF_1_N)
+- register 6 bit 6: eth_tx_en (DIF_3_P)
+- register 6 bit 8: eth_ref_clk (DIF_3_N)
+- register 6 bit 9: eth_mdc (DIF_4_P)
+- register 6 bit 10: eth_mdio_en (DIF_4_N)
+- register 6 bit 11: eth_tx_clk (GPIOH_9)
+- register 6 bit 12: eth_txd2 (GPIOH_8)
+- register 6 bit 13: eth_txd3 (GPIOH_7)
+- register 7 bit 20: eth_txd0_0 (GPIOH_6)
+- register 7 bit 21: eth_txd1_0 (GPIOH_5)
+- register 7 bit 22: eth_rxd3 (DIF_2_P)
+- register 7 bit 23: eth_rxd2 (DIF_2_N)
+
+Drop the eth_txd0_1 and eth_txd1_1 groups from eth_rgmii_pins to fix the
+Ethernet transmit performance on Odroid-C1. Also add the eth_rxd2 and
+eth_rxd3 groups so we don't rely on the bootloader to set them up.
+
+iperf3 statistics before this change:
+- transmitting from Odroid-C1: 741 Mbits/sec (0 retries)
+- receiving on Odroid-C1: 199 Mbits/sec (1713 retries)
+
+iperf3 statistics after this change:
+- transmitting from Odroid-C1: 667 Mbits/sec (0 retries)
+- receiving on Odroid-C1: 750 Mbits/sec (0 retries)
+
+Fixes: b96446541d8390 ("ARM: dts: meson8b: extend ethernet controller description")
+Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
+Cc: Emiliano Ingrassia <ingrassia@epigenesys.com>
+Cc: Linus Lüssing <linus.luessing@c0d3.blue>
+Tested-by: Emiliano Ingrassia <ingrassia@epigenesys.com>
+Reviewed-by: Emiliano Ingrassia <ingrassia@epigenesys.com>
+Signed-off-by: Kevin Hilman <khilman@baylibre.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ arch/arm/boot/dts/meson8b.dtsi | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/arch/arm/boot/dts/meson8b.dtsi b/arch/arm/boot/dts/meson8b.dtsi
+index 08f7f6be7254..5b3e5c50c72f 100644
+--- a/arch/arm/boot/dts/meson8b.dtsi
++++ b/arch/arm/boot/dts/meson8b.dtsi
+@@ -207,9 +207,7 @@
+ groups = "eth_tx_clk",
+ "eth_tx_en",
+ "eth_txd1_0",
+- "eth_txd1_1",
+ "eth_txd0_0",
+- "eth_txd0_1",
+ "eth_rx_clk",
+ "eth_rx_dv",
+ "eth_rxd1",
+@@ -218,7 +216,9 @@
+ "eth_mdc",
+ "eth_ref_clk",
+ "eth_txd2",
+- "eth_txd3";
++ "eth_txd3",
++ "eth_rxd3",
++ "eth_rxd2";
+ function = "ethernet";
+ };
+ };
+--
+2.19.1
+
--- /dev/null
+From baf26792358c3fc7e25e418318b732034bf97b93 Mon Sep 17 00:00:00 2001
+From: wen yang <yellowriver2010@hotmail.com>
+Date: Sat, 2 Feb 2019 14:53:16 +0000
+Subject: ASoC: fsl-asoc-card: fix object reference leaks in
+ fsl_asoc_card_probe
+
+[ Upstream commit 11907e9d3533648615db08140e3045b829d2c141 ]
+
+The of_find_device_by_node() takes a reference to the underlying device
+structure, we should release that reference.
+
+Signed-off-by: Wen Yang <yellowriver2010@hotmil.com>
+Cc: Timur Tabi <timur@kernel.org>
+Cc: Nicolin Chen <nicoleotsuka@gmail.com>
+Cc: Xiubo Li <Xiubo.Lee@gmail.com>
+Cc: Fabio Estevam <festevam@gmail.com>
+Cc: Liam Girdwood <lgirdwood@gmail.com>
+Cc: Mark Brown <broonie@kernel.org>
+Cc: Jaroslav Kysela <perex@perex.cz>
+Cc: Takashi Iwai <tiwai@suse.com>
+Cc: alsa-devel@alsa-project.org
+Cc: linuxppc-dev@lists.ozlabs.org
+Cc: linux-kernel@vger.kernel.org
+Signed-off-by: Mark Brown <broonie@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ sound/soc/fsl/fsl-asoc-card.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/sound/soc/fsl/fsl-asoc-card.c b/sound/soc/fsl/fsl-asoc-card.c
+index 44433b20435c..600d9be9706e 100644
+--- a/sound/soc/fsl/fsl-asoc-card.c
++++ b/sound/soc/fsl/fsl-asoc-card.c
+@@ -689,6 +689,7 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
+ asrc_fail:
+ of_node_put(asrc_np);
+ of_node_put(codec_np);
++ put_device(&cpu_pdev->dev);
+ fail:
+ of_node_put(cpu_np);
+
+--
+2.19.1
+
--- /dev/null
+From df36b6d4d7bdbe4966d4d03cf4c83329bf3363d2 Mon Sep 17 00:00:00 2001
+From: Takashi Iwai <tiwai@suse.de>
+Date: Tue, 19 Feb 2019 16:46:51 +0100
+Subject: ASoC: qcom: Fix of-node refcount unbalance in qcom_snd_parse_of()
+
+[ Upstream commit 70b773219a32c7b8f3e53e041bc023ad99fd81f4 ]
+
+Although qcom_snd_parse_of() tries to manage the of-node refcount,
+there are still a few places that lead to the unblanced refcount in
+the error code path. Namely,
+
+- for_each_child_of_node() needs to unreference the iterator node if
+ aborting the loop in the middle,
+- cpu, codec and platform node objects have to be unreferenced at each
+ iteration,
+- platform and codec node objects have to be referred before jumping
+ to the error handling code that unreference them unconditionally.
+
+This patch tries to address these by moving the assignment of platform
+and codec node objects to the beginning of the loop and adding the
+of_node_put() calls adequately.
+
+Fixes: c25e295cd77b ("ASoC: qcom: Add support to parse common audio device nodes")
+Cc: Patrick Lai <plai@codeaurora.org>
+Cc: Banajit Goswami <bgoswami@codeaurora.org>
+Signed-off-by: Takashi Iwai <tiwai@suse.de>
+Signed-off-by: Mark Brown <broonie@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ sound/soc/qcom/common.c | 10 ++++++++--
+ 1 file changed, 8 insertions(+), 2 deletions(-)
+
+diff --git a/sound/soc/qcom/common.c b/sound/soc/qcom/common.c
+index 4715527054e5..5661025e8cec 100644
+--- a/sound/soc/qcom/common.c
++++ b/sound/soc/qcom/common.c
+@@ -42,6 +42,9 @@ int qcom_snd_parse_of(struct snd_soc_card *card)
+ link = card->dai_link;
+ for_each_child_of_node(dev->of_node, np) {
+ cpu = of_get_child_by_name(np, "cpu");
++ platform = of_get_child_by_name(np, "platform");
++ codec = of_get_child_by_name(np, "codec");
++
+ if (!cpu) {
+ dev_err(dev, "Can't find cpu DT node\n");
+ ret = -EINVAL;
+@@ -63,8 +66,6 @@ int qcom_snd_parse_of(struct snd_soc_card *card)
+ goto err;
+ }
+
+- platform = of_get_child_by_name(np, "platform");
+- codec = of_get_child_by_name(np, "codec");
+ if (codec && platform) {
+ link->platform_of_node = of_parse_phandle(platform,
+ "sound-dai",
+@@ -100,10 +101,15 @@ int qcom_snd_parse_of(struct snd_soc_card *card)
+ link->dpcm_capture = 1;
+ link->stream_name = link->name;
+ link++;
++
++ of_node_put(cpu);
++ of_node_put(codec);
++ of_node_put(platform);
+ }
+
+ return 0;
+ err:
++ of_node_put(np);
+ of_node_put(cpu);
+ of_node_put(codec);
+ of_node_put(platform);
+--
+2.19.1
+
--- /dev/null
+From 540a8beba551a150d130e24d68f9b0056239f699 Mon Sep 17 00:00:00 2001
+From: Rakesh Pillai <pillair@codeaurora.org>
+Date: Fri, 8 Feb 2019 15:50:24 +0200
+Subject: ath10k: fix shadow register implementation for WCN3990
+
+[ Upstream commit 1863008369ae0407508033b4b00f98b985adeb15 ]
+
+WCN3990 supports shadow registers write operation support
+for copy engine for regular operation in powersave mode.
+
+Since WCN3990 is a 64-bit target, the shadow register
+implementation needs to be done in the copy engine handlers
+for 64-bit target. Currently the shadow register implementation
+is present in the 32-bit target handlers of copy engine.
+
+Fix the shadow register copy engine write operation
+implementation for 64-bit target(WCN3990).
+
+Tested HW: WCN3990
+Tested FW: WLAN.HL.2.0-01188-QCAHLSWMTPLZ-1
+
+Fixes: b7ba83f7c414 ("ath10k: add support for shadow register for WNC3990")
+Signed-off-by: Rakesh Pillai <pillair@codeaurora.org>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/wireless/ath/ath10k/ce.c | 26 +++++++++++++-------------
+ drivers/net/wireless/ath/ath10k/ce.h | 2 +-
+ 2 files changed, 14 insertions(+), 14 deletions(-)
+
+diff --git a/drivers/net/wireless/ath/ath10k/ce.c b/drivers/net/wireless/ath/ath10k/ce.c
+index 18c709c484e7..f761d651c16e 100644
+--- a/drivers/net/wireless/ath/ath10k/ce.c
++++ b/drivers/net/wireless/ath/ath10k/ce.c
+@@ -500,14 +500,8 @@ static int _ath10k_ce_send_nolock(struct ath10k_ce_pipe *ce_state,
+ write_index = CE_RING_IDX_INCR(nentries_mask, write_index);
+
+ /* WORKAROUND */
+- if (!(flags & CE_SEND_FLAG_GATHER)) {
+- if (ar->hw_params.shadow_reg_support)
+- ath10k_ce_shadow_src_ring_write_index_set(ar, ce_state,
+- write_index);
+- else
+- ath10k_ce_src_ring_write_index_set(ar, ctrl_addr,
+- write_index);
+- }
++ if (!(flags & CE_SEND_FLAG_GATHER))
++ ath10k_ce_src_ring_write_index_set(ar, ctrl_addr, write_index);
+
+ src_ring->write_index = write_index;
+ exit:
+@@ -581,8 +575,14 @@ static int _ath10k_ce_send_nolock_64(struct ath10k_ce_pipe *ce_state,
+ /* Update Source Ring Write Index */
+ write_index = CE_RING_IDX_INCR(nentries_mask, write_index);
+
+- if (!(flags & CE_SEND_FLAG_GATHER))
+- ath10k_ce_src_ring_write_index_set(ar, ctrl_addr, write_index);
++ if (!(flags & CE_SEND_FLAG_GATHER)) {
++ if (ar->hw_params.shadow_reg_support)
++ ath10k_ce_shadow_src_ring_write_index_set(ar, ce_state,
++ write_index);
++ else
++ ath10k_ce_src_ring_write_index_set(ar, ctrl_addr,
++ write_index);
++ }
+
+ src_ring->write_index = write_index;
+ exit:
+@@ -1394,12 +1394,12 @@ static int ath10k_ce_alloc_shadow_base(struct ath10k *ar,
+ u32 nentries)
+ {
+ src_ring->shadow_base_unaligned = kcalloc(nentries,
+- sizeof(struct ce_desc),
++ sizeof(struct ce_desc_64),
+ GFP_KERNEL);
+ if (!src_ring->shadow_base_unaligned)
+ return -ENOMEM;
+
+- src_ring->shadow_base = (struct ce_desc *)
++ src_ring->shadow_base = (struct ce_desc_64 *)
+ PTR_ALIGN(src_ring->shadow_base_unaligned,
+ CE_DESC_RING_ALIGN);
+ return 0;
+@@ -1453,7 +1453,7 @@ ath10k_ce_alloc_src_ring(struct ath10k *ar, unsigned int ce_id,
+ ret = ath10k_ce_alloc_shadow_base(ar, src_ring, nentries);
+ if (ret) {
+ dma_free_coherent(ar->dev,
+- (nentries * sizeof(struct ce_desc) +
++ (nentries * sizeof(struct ce_desc_64) +
+ CE_DESC_RING_ALIGN),
+ src_ring->base_addr_owner_space_unaligned,
+ base_addr);
+diff --git a/drivers/net/wireless/ath/ath10k/ce.h b/drivers/net/wireless/ath/ath10k/ce.h
+index b8fb5382dede..8088f7a66426 100644
+--- a/drivers/net/wireless/ath/ath10k/ce.h
++++ b/drivers/net/wireless/ath/ath10k/ce.h
+@@ -118,7 +118,7 @@ struct ath10k_ce_ring {
+ u32 base_addr_ce_space;
+
+ char *shadow_base_unaligned;
+- struct ce_desc *shadow_base;
++ struct ce_desc_64 *shadow_base;
+
+ /* keep last */
+ void *per_transfer_context[0];
+--
+2.19.1
+
--- /dev/null
+From b11a4f016cd619545475fbd1c97b1f30f78a8186 Mon Sep 17 00:00:00 2001
+From: Chen-Yu Tsai <wens@csie.org>
+Date: Sun, 27 Jan 2019 22:50:54 +0800
+Subject: backlight: pwm_bl: Use gpiod_get_value_cansleep() to get initial
+ state
+
+[ Upstream commit cec2b18832e26bc866bef2be22eff4e25bbc4034 ]
+
+gpiod_get_value() gives out a warning if access to the underlying gpiochip
+requires sleeping, which is common for I2C based chips:
+
+ WARNING: CPU: 0 PID: 77 at drivers/gpio/gpiolib.c:2500 gpiod_get_value+0xd0/0x100
+ Modules linked in:
+ CPU: 0 PID: 77 Comm: kworker/0:2 Not tainted 4.14.0-rc3-00589-gf32897915d48-dirty #90
+ Hardware name: Allwinner sun4i/sun5i Families
+ Workqueue: events deferred_probe_work_func
+ [<c010ec50>] (unwind_backtrace) from [<c010b784>] (show_stack+0x10/0x14)
+ [<c010b784>] (show_stack) from [<c0797224>] (dump_stack+0x88/0x9c)
+ [<c0797224>] (dump_stack) from [<c0125b08>] (__warn+0xe8/0x100)
+ [<c0125b08>] (__warn) from [<c0125bd0>] (warn_slowpath_null+0x20/0x28)
+ [<c0125bd0>] (warn_slowpath_null) from [<c037069c>] (gpiod_get_value+0xd0/0x100)
+ [<c037069c>] (gpiod_get_value) from [<c03778d0>] (pwm_backlight_probe+0x238/0x508)
+ [<c03778d0>] (pwm_backlight_probe) from [<c0411a2c>] (platform_drv_probe+0x50/0xac)
+ [<c0411a2c>] (platform_drv_probe) from [<c0410224>] (driver_probe_device+0x238/0x2e8)
+ [<c0410224>] (driver_probe_device) from [<c040e820>] (bus_for_each_drv+0x44/0x94)
+ [<c040e820>] (bus_for_each_drv) from [<c040ff0c>] (__device_attach+0xb0/0x114)
+ [<c040ff0c>] (__device_attach) from [<c040f4f8>] (bus_probe_device+0x84/0x8c)
+ [<c040f4f8>] (bus_probe_device) from [<c040f944>] (deferred_probe_work_func+0x50/0x14c)
+ [<c040f944>] (deferred_probe_work_func) from [<c013be84>] (process_one_work+0x1ec/0x414)
+ [<c013be84>] (process_one_work) from [<c013ce5c>] (worker_thread+0x2b0/0x5a0)
+ [<c013ce5c>] (worker_thread) from [<c0141908>] (kthread+0x14c/0x154)
+ [<c0141908>] (kthread) from [<c0107ab0>] (ret_from_fork+0x14/0x24)
+
+This was missed in commit 0c9501f823a4 ("backlight: pwm_bl: Handle gpio
+that can sleep"). The code was then moved to a separate function in
+commit 7613c922315e ("backlight: pwm_bl: Move the checks for initial power
+state to a separate function").
+
+The only usage of gpiod_get_value() is during the probe stage, which is
+safe to sleep in. Switch to gpiod_get_value_cansleep().
+
+Fixes: 0c9501f823a4 ("backlight: pwm_bl: Handle gpio that can sleep")
+Signed-off-by: Chen-Yu Tsai <wens@csie.org>
+Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
+Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
+Signed-off-by: Lee Jones <lee.jones@linaro.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/video/backlight/pwm_bl.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
+index 6bde543452f2..7ddc0930e98c 100644
+--- a/drivers/video/backlight/pwm_bl.c
++++ b/drivers/video/backlight/pwm_bl.c
+@@ -425,7 +425,7 @@ static int pwm_backlight_initial_power_state(const struct pwm_bl_data *pb)
+ */
+
+ /* if the enable GPIO is disabled, do not enable the backlight */
+- if (pb->enable_gpio && gpiod_get_value(pb->enable_gpio) == 0)
++ if (pb->enable_gpio && gpiod_get_value_cansleep(pb->enable_gpio) == 0)
+ return FB_BLANK_POWERDOWN;
+
+ /* The regulator is disabled, do not enable the backlight */
+--
+2.19.1
+
--- /dev/null
+From 17ea93f61104132f2f342ef9086a66aece5a843f Mon Sep 17 00:00:00 2001
+From: Coly Li <colyli@suse.de>
+Date: Sat, 9 Feb 2019 12:53:10 +0800
+Subject: bcache: fix input overflow to cache set sysfs file io_error_halflife
+
+[ Upstream commit a91fbda49f746119828f7e8ad0f0aa2ab0578f65 ]
+
+Cache set sysfs entry io_error_halflife is used to set c->error_decay.
+c->error_decay is in type unsigned int, and it is converted by
+strtoul_or_return(), therefore overflow to c->error_decay is possible
+for a large input value.
+
+This patch fixes the overflow by using strtoul_safe_clamp() to convert
+input string to an unsigned long value in range [0, UINT_MAX], then
+divides by 88 and set it to c->error_decay.
+
+Signed-off-by: Coly Li <colyli@suse.de>
+Signed-off-by: Jens Axboe <axboe@kernel.dk>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/md/bcache/sysfs.c | 13 +++++++++++--
+ 1 file changed, 11 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
+index 26f035a0c5b9..59bf13faf752 100644
+--- a/drivers/md/bcache/sysfs.c
++++ b/drivers/md/bcache/sysfs.c
+@@ -766,8 +766,17 @@ STORE(__bch_cache_set)
+ c->error_limit = strtoul_or_return(buf);
+
+ /* See count_io_errors() for why 88 */
+- if (attr == &sysfs_io_error_halflife)
+- c->error_decay = strtoul_or_return(buf) / 88;
++ if (attr == &sysfs_io_error_halflife) {
++ unsigned long v = 0;
++ ssize_t ret;
++
++ ret = strtoul_safe_clamp(buf, v, 0, UINT_MAX);
++ if (!ret) {
++ c->error_decay = v / 88;
++ return size;
++ }
++ return ret;
++ }
+
+ if (attr == &sysfs_io_disable) {
+ v = strtoul_or_return(buf);
+--
+2.19.1
+
--- /dev/null
+From 53df0a0818aa80f93ecfe15edacb96608bc82e24 Mon Sep 17 00:00:00 2001
+From: Coly Li <colyli@suse.de>
+Date: Sat, 9 Feb 2019 12:53:01 +0800
+Subject: bcache: fix input overflow to sequential_cutoff
+
+[ Upstream commit 8c27a3953e92eb0b22dbb03d599f543a05f9574e ]
+
+People may set sequential_cutoff of a cached device via sysfs file,
+but current code does not check input value overflow. E.g. if value
+4294967295 (UINT_MAX) is written to file sequential_cutoff, its value
+is 4GB, but if 4294967296 (UINT_MAX + 1) is written into, its value
+will be 0. This is an unexpected behavior.
+
+This patch replaces d_strtoi_h() by sysfs_strtoul_clamp() to convert
+input string to unsigned integer value, and limit its range in
+[0, UINT_MAX]. Then the input overflow can be fixed.
+
+Signed-off-by: Coly Li <colyli@suse.de>
+Signed-off-by: Jens Axboe <axboe@kernel.dk>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/md/bcache/sysfs.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
+index 59bf13faf752..01c7c4452a26 100644
+--- a/drivers/md/bcache/sysfs.c
++++ b/drivers/md/bcache/sysfs.c
+@@ -295,7 +295,9 @@ STORE(__cached_dev)
+ dc->io_disable = v ? 1 : 0;
+ }
+
+- d_strtoi_h(sequential_cutoff);
++ sysfs_strtoul_clamp(sequential_cutoff,
++ dc->sequential_cutoff,
++ 0, UINT_MAX);
+ d_strtoi_h(readahead);
+
+ if (attr == &sysfs_clear_stats)
+--
+2.19.1
+
--- /dev/null
+From 5e94e9dd1b3ac8fd53821f7e23913f3d559652c3 Mon Sep 17 00:00:00 2001
+From: Coly Li <colyli@suse.de>
+Date: Sat, 9 Feb 2019 12:53:05 +0800
+Subject: bcache: fix potential div-zero error of writeback_rate_i_term_inverse
+
+[ Upstream commit c3b75a2199cdbfc1c335155fe143d842604b1baa ]
+
+dc->writeback_rate_i_term_inverse can be set via sysfs interface. It is
+in type unsigned int, and convert from input string by d_strtoul(). The
+problem is d_strtoul() does not check valid range of the input, if
+4294967296 is written into sysfs file writeback_rate_i_term_inverse,
+an overflow of unsigned integer will happen and value 0 is set to
+dc->writeback_rate_i_term_inverse.
+
+In writeback.c:__update_writeback_rate(), there are following lines of
+code,
+ integral_scaled = div_s64(dc->writeback_rate_integral,
+ dc->writeback_rate_i_term_inverse);
+If dc->writeback_rate_i_term_inverse is set to 0 via sysfs interface,
+a div-zero error might be triggered in the above code.
+
+Therefore we need to add a range limitation in the sysfs interface,
+this is what this patch does, use sysfs_stroul_clamp() to replace
+d_strtoul() and restrict the input range in [1, UINT_MAX].
+
+Signed-off-by: Coly Li <colyli@suse.de>
+Signed-off-by: Jens Axboe <axboe@kernel.dk>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/md/bcache/sysfs.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
+index 01c7c4452a26..503ad954ccc0 100644
+--- a/drivers/md/bcache/sysfs.c
++++ b/drivers/md/bcache/sysfs.c
+@@ -283,7 +283,9 @@ STORE(__cached_dev)
+ sysfs_strtoul_clamp(writeback_rate_update_seconds,
+ dc->writeback_rate_update_seconds,
+ 1, WRITEBACK_RATE_UPDATE_SECS_MAX);
+- d_strtoul(writeback_rate_i_term_inverse);
++ sysfs_strtoul_clamp(writeback_rate_i_term_inverse,
++ dc->writeback_rate_i_term_inverse,
++ 1, UINT_MAX);
+ d_strtoul_nonzero(writeback_rate_p_term_inverse);
+ d_strtoul_nonzero(writeback_rate_minimum);
+
+--
+2.19.1
+
--- /dev/null
+From c27dd0ea1de0607c0b6eaf01e91749f7eb89dae0 Mon Sep 17 00:00:00 2001
+From: Coly Li <colyli@suse.de>
+Date: Sat, 9 Feb 2019 12:53:06 +0800
+Subject: bcache: fix potential div-zero error of writeback_rate_p_term_inverse
+
+[ Upstream commit 5b5fd3c94eef69dcfaa8648198e54c92e5687d6d ]
+
+Current code already uses d_strtoul_nonzero() to convert input string
+to an unsigned integer, to make sure writeback_rate_p_term_inverse
+won't be zero value. But overflow may happen when converting input
+string to an unsigned integer value by d_strtoul_nonzero(), then
+dc->writeback_rate_p_term_inverse can still be set to 0 even if the
+sysfs file input value is not zero, e.g. 4294967296 (a.k.a UINT_MAX+1).
+
+If dc->writeback_rate_p_term_inverse is set to 0, it might cause a
+dev-zero error in following code from __update_writeback_rate(),
+ int64_t proportional_scaled =
+ div_s64(error, dc->writeback_rate_p_term_inverse);
+
+This patch replaces d_strtoul_nonzero() by sysfs_strtoul_clamp() and
+limit the value range in [1, UINT_MAX]. Then the unsigned integer
+overflow and dev-zero error can be avoided.
+
+Signed-off-by: Coly Li <colyli@suse.de>
+Signed-off-by: Jens Axboe <axboe@kernel.dk>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/md/bcache/sysfs.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
+index 503ad954ccc0..d9481640b3e1 100644
+--- a/drivers/md/bcache/sysfs.c
++++ b/drivers/md/bcache/sysfs.c
+@@ -286,7 +286,9 @@ STORE(__cached_dev)
+ sysfs_strtoul_clamp(writeback_rate_i_term_inverse,
+ dc->writeback_rate_i_term_inverse,
+ 1, UINT_MAX);
+- d_strtoul_nonzero(writeback_rate_p_term_inverse);
++ sysfs_strtoul_clamp(writeback_rate_p_term_inverse,
++ dc->writeback_rate_p_term_inverse,
++ 1, UINT_MAX);
+ d_strtoul_nonzero(writeback_rate_minimum);
+
+ sysfs_strtoul_clamp(io_error_limit, dc->error_limit, 0, INT_MAX);
+--
+2.19.1
+
--- /dev/null
+From 23dd44778d31e79ce6a887f5bb20c7a37805e6e8 Mon Sep 17 00:00:00 2001
+From: Coly Li <colyli@suse.de>
+Date: Sat, 9 Feb 2019 12:52:59 +0800
+Subject: bcache: improve sysfs_strtoul_clamp()
+
+[ Upstream commit 596b5a5dd1bc2fa019fdaaae522ef331deef927f ]
+
+Currently sysfs_strtoul_clamp() is defined as,
+ 82 #define sysfs_strtoul_clamp(file, var, min, max) \
+ 83 do { \
+ 84 if (attr == &sysfs_ ## file) \
+ 85 return strtoul_safe_clamp(buf, var, min, max) \
+ 86 ?: (ssize_t) size; \
+ 87 } while (0)
+
+The problem is, if bit width of var is less then unsigned long, min and
+max may not protect var from integer overflow, because overflow happens
+in strtoul_safe_clamp() before checking min and max.
+
+To fix such overflow in sysfs_strtoul_clamp(), to make min and max take
+effect, this patch adds an unsigned long variable, and uses it to macro
+strtoul_safe_clamp() to convert an unsigned long value in range defined
+by [min, max]. Then assign this value to var. By this method, if bit
+width of var is less than unsigned long, integer overflow won't happen
+before min and max are checking.
+
+Now sysfs_strtoul_clamp() can properly handle smaller data type like
+unsigned int, of cause min and max should be defined in range of
+unsigned int too.
+
+Signed-off-by: Coly Li <colyli@suse.de>
+Signed-off-by: Jens Axboe <axboe@kernel.dk>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/md/bcache/sysfs.h | 13 ++++++++++---
+ 1 file changed, 10 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/md/bcache/sysfs.h b/drivers/md/bcache/sysfs.h
+index 3fe82425859c..0ad2715a884e 100644
+--- a/drivers/md/bcache/sysfs.h
++++ b/drivers/md/bcache/sysfs.h
+@@ -81,9 +81,16 @@ do { \
+
+ #define sysfs_strtoul_clamp(file, var, min, max) \
+ do { \
+- if (attr == &sysfs_ ## file) \
+- return strtoul_safe_clamp(buf, var, min, max) \
+- ?: (ssize_t) size; \
++ if (attr == &sysfs_ ## file) { \
++ unsigned long v = 0; \
++ ssize_t ret; \
++ ret = strtoul_safe_clamp(buf, v, min, max); \
++ if (!ret) { \
++ var = v; \
++ return size; \
++ } \
++ return ret; \
++ } \
+ } while (0)
+
+ #define strtoul_or_return(cp) \
+--
+2.19.1
+
--- /dev/null
+From 14a5279754eea932b7719e108e8c0835f6aa2a54 Mon Sep 17 00:00:00 2001
+From: Paolo Valente <paolo.valente@linaro.org>
+Date: Tue, 29 Jan 2019 12:06:38 +0100
+Subject: block, bfq: fix in-service-queue check for queue merging
+
+[ Upstream commit 058fdecc6de7cdecbf4c59b851e80eb2d6c5295f ]
+
+When a new I/O request arrives for a bfq_queue, say Q, bfq checks
+whether that request is close to
+(a) the head request of some other queue waiting to be served, or
+(b) the last request dispatched for the in-service queue (in case Q
+itself is not the in-service queue)
+
+If a queue, say Q2, is found for which the above condition holds, then
+bfq merges Q and Q2, to hopefully get a more sequential I/O in the
+resulting merged queue, and thus a possibly higher throughput.
+
+Case (b) is checked by comparing the new request for Q with the last
+request dispatched, assuming that the latter necessarily belonged to the
+in-service queue. Unfortunately, this assumption is no longer always
+correct, since commit d0edc2473be9 ("block, bfq: inject other-queue I/O
+into seeky idle queues on NCQ flash").
+
+When the assumption does not hold, queues that must not be merged may be
+merged, causing unexpected loss of control on per-queue service
+guarantees.
+
+This commit solves this problem by adding an extra field, which stores
+the actual last request dispatched for the in-service queue, and by
+using this new field to correctly check case (b).
+
+Signed-off-by: Paolo Valente <paolo.valente@linaro.org>
+Signed-off-by: Jens Axboe <axboe@kernel.dk>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ block/bfq-iosched.c | 5 ++++-
+ block/bfq-iosched.h | 3 +++
+ 2 files changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c
+index 653100fb719e..c5e2c5a01182 100644
+--- a/block/bfq-iosched.c
++++ b/block/bfq-iosched.c
+@@ -2215,7 +2215,8 @@ bfq_setup_cooperator(struct bfq_data *bfqd, struct bfq_queue *bfqq,
+
+ if (in_service_bfqq && in_service_bfqq != bfqq &&
+ likely(in_service_bfqq != &bfqd->oom_bfqq) &&
+- bfq_rq_close_to_sector(io_struct, request, bfqd->last_position) &&
++ bfq_rq_close_to_sector(io_struct, request,
++ bfqd->in_serv_last_pos) &&
+ bfqq->entity.parent == in_service_bfqq->entity.parent &&
+ bfq_may_be_close_cooperator(bfqq, in_service_bfqq)) {
+ new_bfqq = bfq_setup_merge(bfqq, in_service_bfqq);
+@@ -2755,6 +2756,8 @@ update_rate_and_reset:
+ bfq_update_rate_reset(bfqd, rq);
+ update_last_values:
+ bfqd->last_position = blk_rq_pos(rq) + blk_rq_sectors(rq);
++ if (RQ_BFQQ(rq) == bfqd->in_service_queue)
++ bfqd->in_serv_last_pos = bfqd->last_position;
+ bfqd->last_dispatch = now_ns;
+ }
+
+diff --git a/block/bfq-iosched.h b/block/bfq-iosched.h
+index a8a2e5aca4d4..d5e9e60cb1a5 100644
+--- a/block/bfq-iosched.h
++++ b/block/bfq-iosched.h
+@@ -469,6 +469,9 @@ struct bfq_data {
+ /* on-disk position of the last served request */
+ sector_t last_position;
+
++ /* position of the last served request for the in-service queue */
++ sector_t in_serv_last_pos;
++
+ /* time of last request completion (ns) */
+ u64 last_completion;
+
+--
+2.19.1
+
--- /dev/null
+From 89e1e9b9305254c1bace8de1a1dd5d9196b18774 Mon Sep 17 00:00:00 2001
+From: Valdis Kletnieks <valdis.kletnieks@vt.edu>
+Date: Tue, 29 Jan 2019 01:04:25 -0500
+Subject: bpf: fix missing prototype warnings
+
+[ Upstream commit 116bfa96a255123ed209da6544f74a4f2eaca5da ]
+
+Compiling with W=1 generates warnings:
+
+ CC kernel/bpf/core.o
+kernel/bpf/core.c:721:12: warning: no previous prototype for ?bpf_jit_alloc_exec_limit? [-Wmissing-prototypes]
+ 721 | u64 __weak bpf_jit_alloc_exec_limit(void)
+ | ^~~~~~~~~~~~~~~~~~~~~~~~
+kernel/bpf/core.c:757:14: warning: no previous prototype for ?bpf_jit_alloc_exec? [-Wmissing-prototypes]
+ 757 | void *__weak bpf_jit_alloc_exec(unsigned long size)
+ | ^~~~~~~~~~~~~~~~~~
+kernel/bpf/core.c:762:13: warning: no previous prototype for ?bpf_jit_free_exec? [-Wmissing-prototypes]
+ 762 | void __weak bpf_jit_free_exec(void *addr)
+ | ^~~~~~~~~~~~~~~~~
+
+All three are weak functions that archs can override, provide
+proper prototypes for when a new arch provides their own.
+
+Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
+Acked-by: Song Liu <songliubraving@fb.com>
+Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ include/linux/filter.h | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/include/linux/filter.h b/include/linux/filter.h
+index 1a39d57eb88f..037610845892 100644
+--- a/include/linux/filter.h
++++ b/include/linux/filter.h
+@@ -844,7 +844,9 @@ bpf_jit_binary_alloc(unsigned int proglen, u8 **image_ptr,
+ unsigned int alignment,
+ bpf_jit_fill_hole_t bpf_fill_ill_insns);
+ void bpf_jit_binary_free(struct bpf_binary_header *hdr);
+-
++u64 bpf_jit_alloc_exec_limit(void);
++void *bpf_jit_alloc_exec(unsigned long size);
++void bpf_jit_free_exec(void *addr);
+ void bpf_jit_free(struct bpf_prog *fp);
+
+ struct bpf_prog *bpf_jit_blind_constants(struct bpf_prog *fp);
+--
+2.19.1
+
--- /dev/null
+From 75ca558b14fae43521a8ff574763ed49d2df5b3d Mon Sep 17 00:00:00 2001
+From: Hans de Goede <hdegoede@redhat.com>
+Date: Mon, 7 Jan 2019 14:33:27 +0100
+Subject: brcmfmac: Use firmware_request_nowarn for the clm_blob
+
+[ Upstream commit 4ad0be160544ffbdafb7cec39bb8e6dd0a97317a ]
+
+The linux-firmware brcmfmac firmware files contain an embedded table with
+per country allowed channels and strength info.
+
+For recent hardware these versions of the firmware are specially build for
+linux-firmware, the firmware files directly available from Cypress rely on
+a separate clm_blob file for this info.
+
+For some unknown reason Cypress refuses to provide the standard firmware
+files + clm_blob files it uses elsewhere for inclusion into linux-firmware,
+instead relying on these special builds with the clm_blob info embedded.
+This means that the linux-firmware firmware versions often lag behind,
+but I digress.
+
+The brcmfmac driver does support the separate clm_blob file and always
+tries to load this. Currently we use request_firmware for this. This means
+that on any standard install, using the standard combo of linux-kernel +
+linux-firmware, we will get a warning:
+"Direct firmware load for ... failed with error -2"
+
+On top of this, brcmfmac itself prints: "no clm_blob available (err=-2),
+device may have limited channels available".
+
+This commit switches to firmware_request_nowarn, fixing almost any brcmfmac
+device logging the warning (it leaves the brcmfmac info message in place).
+
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
+index cd3651069d0c..27893af63ebc 100644
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
+@@ -149,7 +149,7 @@ static int brcmf_c_process_clm_blob(struct brcmf_if *ifp)
+ return err;
+ }
+
+- err = request_firmware(&clm, clm_name, bus->dev);
++ err = firmware_request_nowarn(&clm, clm_name, bus->dev);
+ if (err) {
+ brcmf_info("no clm_blob available (err=%d), device may have limited channels available\n",
+ err);
+--
+2.19.1
+
--- /dev/null
+From a9cfc8c42ebaad8c3a321f57c17cc19b204103bd Mon Sep 17 00:00:00 2001
+From: Qu Wenruo <wqu@suse.com>
+Date: Fri, 25 Jan 2019 07:55:27 +0800
+Subject: btrfs: qgroup: Make qgroup async transaction commit more aggressive
+
+[ Upstream commit f5fef4593653dfa2a865c485bb81415de51d5c99 ]
+
+[BUG]
+Btrfs qgroup will still hit EDQUOT under the following case:
+
+ $ dev=/dev/test/test
+ $ mnt=/mnt/btrfs
+ $ umount $mnt &> /dev/null
+ $ umount $dev &> /dev/null
+
+ $ mkfs.btrfs -f $dev
+ $ mount $dev $mnt -o nospace_cache
+
+ $ btrfs subv create $mnt/subv
+ $ btrfs quota enable $mnt
+ $ btrfs quota rescan -w $mnt
+ $ btrfs qgroup limit -e 1G $mnt/subv
+
+ $ fallocate -l 900M $mnt/subv/padding
+ $ sync
+
+ $ rm $mnt/subv/padding
+
+ # Hit EDQUOT
+ $ xfs_io -f -c "pwrite 0 512M" $mnt/subv/real_file
+
+[CAUSE]
+Since commit a514d63882c3 ("btrfs: qgroup: Commit transaction in advance
+to reduce early EDQUOT"), btrfs is not forced to commit transaction to
+reclaim more quota space.
+
+Instead, we just check pertrans metadata reservation against some
+threshold and try to do asynchronously transaction commit.
+
+However in above case, the pertrans metadata reservation is pretty small
+thus it will never trigger asynchronous transaction commit.
+
+[FIX]
+Instead of only accounting pertrans metadata reservation, we calculate
+how much free space we have, and if there isn't much free space left,
+commit transaction asynchronously to try to free some space.
+
+This may slow down the fs when we have less than 32M free qgroup space,
+but should reduce a lot of false EDQUOT, so the cost should be
+acceptable.
+
+Signed-off-by: Qu Wenruo <wqu@suse.com>
+Signed-off-by: David Sterba <dsterba@suse.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ fs/btrfs/qgroup.c | 28 ++++++++++++++--------------
+ 1 file changed, 14 insertions(+), 14 deletions(-)
+
+diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
+index e1fcb28ad4cc..e46e83e87600 100644
+--- a/fs/btrfs/qgroup.c
++++ b/fs/btrfs/qgroup.c
+@@ -2427,16 +2427,15 @@ out:
+ /*
+ * Two limits to commit transaction in advance.
+ *
+- * For RATIO, it will be 1/RATIO of the remaining limit
+- * (excluding data and prealloc meta) as threshold.
++ * For RATIO, it will be 1/RATIO of the remaining limit as threshold.
+ * For SIZE, it will be in byte unit as threshold.
+ */
+-#define QGROUP_PERTRANS_RATIO 32
+-#define QGROUP_PERTRANS_SIZE SZ_32M
++#define QGROUP_FREE_RATIO 32
++#define QGROUP_FREE_SIZE SZ_32M
+ static bool qgroup_check_limits(struct btrfs_fs_info *fs_info,
+ const struct btrfs_qgroup *qg, u64 num_bytes)
+ {
+- u64 limit;
++ u64 free;
+ u64 threshold;
+
+ if ((qg->lim_flags & BTRFS_QGROUP_LIMIT_MAX_RFER) &&
+@@ -2455,20 +2454,21 @@ static bool qgroup_check_limits(struct btrfs_fs_info *fs_info,
+ */
+ if ((qg->lim_flags & (BTRFS_QGROUP_LIMIT_MAX_RFER |
+ BTRFS_QGROUP_LIMIT_MAX_EXCL))) {
+- if (qg->lim_flags & BTRFS_QGROUP_LIMIT_MAX_EXCL)
+- limit = qg->max_excl;
+- else
+- limit = qg->max_rfer;
+- threshold = (limit - qg->rsv.values[BTRFS_QGROUP_RSV_DATA] -
+- qg->rsv.values[BTRFS_QGROUP_RSV_META_PREALLOC]) /
+- QGROUP_PERTRANS_RATIO;
+- threshold = min_t(u64, threshold, QGROUP_PERTRANS_SIZE);
++ if (qg->lim_flags & BTRFS_QGROUP_LIMIT_MAX_EXCL) {
++ free = qg->max_excl - qgroup_rsv_total(qg) - qg->excl;
++ threshold = min_t(u64, qg->max_excl / QGROUP_FREE_RATIO,
++ QGROUP_FREE_SIZE);
++ } else {
++ free = qg->max_rfer - qgroup_rsv_total(qg) - qg->rfer;
++ threshold = min_t(u64, qg->max_rfer / QGROUP_FREE_RATIO,
++ QGROUP_FREE_SIZE);
++ }
+
+ /*
+ * Use transaction_kthread to commit transaction, so we no
+ * longer need to bother nested transaction nor lock context.
+ */
+- if (qg->rsv.values[BTRFS_QGROUP_RSV_META_PERTRANS] > threshold)
++ if (free < threshold)
+ btrfs_commit_transaction_locksafe(fs_info);
+ }
+
+--
+2.19.1
+
--- /dev/null
+From 962022a2d8c6a4b5898f3a4d6a678f9748453c6a Mon Sep 17 00:00:00 2001
+From: Guenter Roeck <linux@roeck-us.net>
+Date: Wed, 6 Feb 2019 21:13:49 -0800
+Subject: cdrom: Fix race condition in cdrom_sysctl_register
+
+[ Upstream commit f25191bb322dec8fa2979ecb8235643aa42470e1 ]
+
+The following traceback is sometimes seen when booting an image in qemu:
+
+[ 54.608293] cdrom: Uniform CD-ROM driver Revision: 3.20
+[ 54.611085] Fusion MPT base driver 3.04.20
+[ 54.611877] Copyright (c) 1999-2008 LSI Corporation
+[ 54.616234] Fusion MPT SAS Host driver 3.04.20
+[ 54.635139] sysctl duplicate entry: /dev/cdrom//info
+[ 54.639578] CPU: 0 PID: 266 Comm: kworker/u4:5 Not tainted 5.0.0-rc5 #1
+[ 54.639578] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015
+[ 54.641273] Workqueue: events_unbound async_run_entry_fn
+[ 54.641273] Call Trace:
+[ 54.641273] dump_stack+0x67/0x90
+[ 54.641273] __register_sysctl_table+0x50b/0x570
+[ 54.641273] ? rcu_read_lock_sched_held+0x6f/0x80
+[ 54.641273] ? kmem_cache_alloc_trace+0x1c7/0x1f0
+[ 54.646814] __register_sysctl_paths+0x1c8/0x1f0
+[ 54.646814] cdrom_sysctl_register.part.7+0xc/0x5f
+[ 54.646814] register_cdrom.cold.24+0x2a/0x33
+[ 54.646814] sr_probe+0x4bd/0x580
+[ 54.646814] ? __driver_attach+0xd0/0xd0
+[ 54.646814] really_probe+0xd6/0x260
+[ 54.646814] ? __driver_attach+0xd0/0xd0
+[ 54.646814] driver_probe_device+0x4a/0xb0
+[ 54.646814] ? __driver_attach+0xd0/0xd0
+[ 54.646814] bus_for_each_drv+0x73/0xc0
+[ 54.646814] __device_attach+0xd6/0x130
+[ 54.646814] bus_probe_device+0x9a/0xb0
+[ 54.646814] device_add+0x40c/0x670
+[ 54.646814] ? __pm_runtime_resume+0x4f/0x80
+[ 54.646814] scsi_sysfs_add_sdev+0x81/0x290
+[ 54.646814] scsi_probe_and_add_lun+0x888/0xc00
+[ 54.646814] ? scsi_autopm_get_host+0x21/0x40
+[ 54.646814] __scsi_add_device+0x116/0x130
+[ 54.646814] ata_scsi_scan_host+0x93/0x1c0
+[ 54.646814] async_run_entry_fn+0x34/0x100
+[ 54.646814] process_one_work+0x237/0x5e0
+[ 54.646814] worker_thread+0x37/0x380
+[ 54.646814] ? rescuer_thread+0x360/0x360
+[ 54.646814] kthread+0x118/0x130
+[ 54.646814] ? kthread_create_on_node+0x60/0x60
+[ 54.646814] ret_from_fork+0x3a/0x50
+
+The only sensible explanation is that cdrom_sysctl_register() is called
+twice, once from the module init function and once from register_cdrom().
+cdrom_sysctl_register() is not mutex protected and may happily execute
+twice if the second call is made before the first call is complete.
+
+Use a static atomic to ensure that the function is executed exactly once.
+
+Signed-off-by: Guenter Roeck <linux@roeck-us.net>
+Signed-off-by: Jens Axboe <axboe@kernel.dk>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/cdrom/cdrom.c | 7 +++----
+ 1 file changed, 3 insertions(+), 4 deletions(-)
+
+diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
+index 10802d1fc554..27a82a559ab9 100644
+--- a/drivers/cdrom/cdrom.c
++++ b/drivers/cdrom/cdrom.c
+@@ -265,6 +265,7 @@
+ /* #define ERRLOGMASK (CD_WARNING|CD_OPEN|CD_COUNT_TRACKS|CD_CLOSE) */
+ /* #define ERRLOGMASK (CD_WARNING|CD_REG_UNREG|CD_DO_IOCTL|CD_OPEN|CD_CLOSE|CD_COUNT_TRACKS) */
+
++#include <linux/atomic.h>
+ #include <linux/module.h>
+ #include <linux/fs.h>
+ #include <linux/major.h>
+@@ -3693,9 +3694,9 @@ static struct ctl_table_header *cdrom_sysctl_header;
+
+ static void cdrom_sysctl_register(void)
+ {
+- static int initialized;
++ static atomic_t initialized = ATOMIC_INIT(0);
+
+- if (initialized == 1)
++ if (!atomic_add_unless(&initialized, 1, 1))
+ return;
+
+ cdrom_sysctl_header = register_sysctl_table(cdrom_root_table);
+@@ -3706,8 +3707,6 @@ static void cdrom_sysctl_register(void)
+ cdrom_sysctl_settings.debug = debug;
+ cdrom_sysctl_settings.lock = lockdoor;
+ cdrom_sysctl_settings.check = check_media_type;
+-
+- initialized = 1;
+ }
+
+ static void cdrom_sysctl_unregister(void)
+--
+2.19.1
+
--- /dev/null
+From 086f65b78b6b847d942d872ae98f6d5919bb88db Mon Sep 17 00:00:00 2001
+From: Oleg Nesterov <oleg@redhat.com>
+Date: Mon, 28 Jan 2019 17:00:13 +0100
+Subject: cgroup/pids: turn cgroup_subsys->free() into cgroup_subsys->release()
+ to fix the accounting
+
+[ Upstream commit 51bee5abeab2058ea5813c5615d6197a23dbf041 ]
+
+The only user of cgroup_subsys->free() callback is pids_cgrp_subsys which
+needs pids_free() to uncharge the pid.
+
+However, ->free() is called from __put_task_struct()->cgroup_free() and this
+is too late. Even the trivial program which does
+
+ for (;;) {
+ int pid = fork();
+ assert(pid >= 0);
+ if (pid)
+ wait(NULL);
+ else
+ exit(0);
+ }
+
+can run out of limits because release_task()->call_rcu(delayed_put_task_struct)
+implies an RCU gp after the task/pid goes away and before the final put().
+
+Test-case:
+
+ mkdir -p /tmp/CG
+ mount -t cgroup2 none /tmp/CG
+ echo '+pids' > /tmp/CG/cgroup.subtree_control
+
+ mkdir /tmp/CG/PID
+ echo 2 > /tmp/CG/PID/pids.max
+
+ perl -e 'while ($p = fork) { wait; } $p // die "fork failed: $!\n"' &
+ echo $! > /tmp/CG/PID/cgroup.procs
+
+Without this patch the forking process fails soon after migration.
+
+Rename cgroup_subsys->free() to cgroup_subsys->release() and move the callsite
+into the new helper, cgroup_release(), called by release_task() which actually
+frees the pid(s).
+
+Reported-by: Herton R. Krzesinski <hkrzesin@redhat.com>
+Reported-by: Jan Stancek <jstancek@redhat.com>
+Signed-off-by: Oleg Nesterov <oleg@redhat.com>
+Signed-off-by: Tejun Heo <tj@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ include/linux/cgroup-defs.h | 2 +-
+ include/linux/cgroup.h | 2 ++
+ kernel/cgroup/cgroup.c | 15 +++++++++------
+ kernel/cgroup/pids.c | 4 ++--
+ kernel/exit.c | 1 +
+ 5 files changed, 15 insertions(+), 9 deletions(-)
+
+diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h
+index 22254c1fe1c5..6002275937f5 100644
+--- a/include/linux/cgroup-defs.h
++++ b/include/linux/cgroup-defs.h
+@@ -597,7 +597,7 @@ struct cgroup_subsys {
+ void (*cancel_fork)(struct task_struct *task);
+ void (*fork)(struct task_struct *task);
+ void (*exit)(struct task_struct *task);
+- void (*free)(struct task_struct *task);
++ void (*release)(struct task_struct *task);
+ void (*bind)(struct cgroup_subsys_state *root_css);
+
+ bool early_init:1;
+diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
+index 32c553556bbd..ca51b2c15bcc 100644
+--- a/include/linux/cgroup.h
++++ b/include/linux/cgroup.h
+@@ -119,6 +119,7 @@ extern int cgroup_can_fork(struct task_struct *p);
+ extern void cgroup_cancel_fork(struct task_struct *p);
+ extern void cgroup_post_fork(struct task_struct *p);
+ void cgroup_exit(struct task_struct *p);
++void cgroup_release(struct task_struct *p);
+ void cgroup_free(struct task_struct *p);
+
+ int cgroup_init_early(void);
+@@ -699,6 +700,7 @@ static inline int cgroup_can_fork(struct task_struct *p) { return 0; }
+ static inline void cgroup_cancel_fork(struct task_struct *p) {}
+ static inline void cgroup_post_fork(struct task_struct *p) {}
+ static inline void cgroup_exit(struct task_struct *p) {}
++static inline void cgroup_release(struct task_struct *p) {}
+ static inline void cgroup_free(struct task_struct *p) {}
+
+ static inline int cgroup_init_early(void) { return 0; }
+diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
+index e710ac7fbbbf..63dae7e0ccae 100644
+--- a/kernel/cgroup/cgroup.c
++++ b/kernel/cgroup/cgroup.c
+@@ -195,7 +195,7 @@ static u64 css_serial_nr_next = 1;
+ */
+ static u16 have_fork_callback __read_mostly;
+ static u16 have_exit_callback __read_mostly;
+-static u16 have_free_callback __read_mostly;
++static u16 have_release_callback __read_mostly;
+ static u16 have_canfork_callback __read_mostly;
+
+ /* cgroup namespace for init task */
+@@ -5240,7 +5240,7 @@ static void __init cgroup_init_subsys(struct cgroup_subsys *ss, bool early)
+
+ have_fork_callback |= (bool)ss->fork << ss->id;
+ have_exit_callback |= (bool)ss->exit << ss->id;
+- have_free_callback |= (bool)ss->free << ss->id;
++ have_release_callback |= (bool)ss->release << ss->id;
+ have_canfork_callback |= (bool)ss->can_fork << ss->id;
+
+ /* At system boot, before all subsystems have been
+@@ -5676,16 +5676,19 @@ void cgroup_exit(struct task_struct *tsk)
+ } while_each_subsys_mask();
+ }
+
+-void cgroup_free(struct task_struct *task)
++void cgroup_release(struct task_struct *task)
+ {
+- struct css_set *cset = task_css_set(task);
+ struct cgroup_subsys *ss;
+ int ssid;
+
+- do_each_subsys_mask(ss, ssid, have_free_callback) {
+- ss->free(task);
++ do_each_subsys_mask(ss, ssid, have_release_callback) {
++ ss->release(task);
+ } while_each_subsys_mask();
++}
+
++void cgroup_free(struct task_struct *task)
++{
++ struct css_set *cset = task_css_set(task);
+ put_css_set(cset);
+ }
+
+diff --git a/kernel/cgroup/pids.c b/kernel/cgroup/pids.c
+index 9829c67ebc0a..c9960baaa14f 100644
+--- a/kernel/cgroup/pids.c
++++ b/kernel/cgroup/pids.c
+@@ -247,7 +247,7 @@ static void pids_cancel_fork(struct task_struct *task)
+ pids_uncharge(pids, 1);
+ }
+
+-static void pids_free(struct task_struct *task)
++static void pids_release(struct task_struct *task)
+ {
+ struct pids_cgroup *pids = css_pids(task_css(task, pids_cgrp_id));
+
+@@ -342,7 +342,7 @@ struct cgroup_subsys pids_cgrp_subsys = {
+ .cancel_attach = pids_cancel_attach,
+ .can_fork = pids_can_fork,
+ .cancel_fork = pids_cancel_fork,
+- .free = pids_free,
++ .release = pids_release,
+ .legacy_cftypes = pids_files,
+ .dfl_cftypes = pids_files,
+ .threaded = true,
+diff --git a/kernel/exit.c b/kernel/exit.c
+index d607e23fd0c3..5c0964dc805a 100644
+--- a/kernel/exit.c
++++ b/kernel/exit.c
+@@ -219,6 +219,7 @@ repeat:
+ }
+
+ write_unlock_irq(&tasklist_lock);
++ cgroup_release(p);
+ release_thread(p);
+ call_rcu(&p->rcu, delayed_put_task_struct);
+
+--
+2.19.1
+
--- /dev/null
+From 623b4f4bb876f4b849b8146dc314064bf4e06961 Mon Sep 17 00:00:00 2001
+From: Tejun Heo <tj@kernel.org>
+Date: Fri, 15 Feb 2019 11:01:31 -0800
+Subject: cgroup, rstat: Don't flush subtree root unless necessary
+
+[ Upstream commit b4ff1b44bcd384d22fcbac6ebaf9cc0d33debe50 ]
+
+cgroup_rstat_cpu_pop_updated() is used to traverse the updated cgroups
+on flush. While it was only visiting updated ones in the subtree, it
+was visiting @root unconditionally. We can easily check whether @root
+is updated or not by looking at its ->updated_next just as with the
+cgroups in the subtree.
+
+* Remove the unnecessary cgroup_parent() test. The system root cgroup
+ is never updated and thus its ->updated_next is always NULL. No
+ need to test whether cgroup_parent() exists in addition to
+ ->updated_next.
+
+* Terminate traverse if ->updated_next is NULL. This can only happen
+ for subtree @root and there's no reason to visit it if it's not
+ marked updated.
+
+This reduces cpu consumption when reading a lot of rstat backed files.
+In a micro benchmark reading stat from ~1600 cgroups, the sys time was
+lowered by >40%.
+
+Signed-off-by: Tejun Heo <tj@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ kernel/cgroup/rstat.c | 10 ++++++----
+ 1 file changed, 6 insertions(+), 4 deletions(-)
+
+diff --git a/kernel/cgroup/rstat.c b/kernel/cgroup/rstat.c
+index d503d1a9007c..bb95a35e8c2d 100644
+--- a/kernel/cgroup/rstat.c
++++ b/kernel/cgroup/rstat.c
+@@ -87,7 +87,6 @@ static struct cgroup *cgroup_rstat_cpu_pop_updated(struct cgroup *pos,
+ struct cgroup *root, int cpu)
+ {
+ struct cgroup_rstat_cpu *rstatc;
+- struct cgroup *parent;
+
+ if (pos == root)
+ return NULL;
+@@ -115,8 +114,8 @@ static struct cgroup *cgroup_rstat_cpu_pop_updated(struct cgroup *pos,
+ * However, due to the way we traverse, @pos will be the first
+ * child in most cases. The only exception is @root.
+ */
+- parent = cgroup_parent(pos);
+- if (parent && rstatc->updated_next) {
++ if (rstatc->updated_next) {
++ struct cgroup *parent = cgroup_parent(pos);
+ struct cgroup_rstat_cpu *prstatc = cgroup_rstat_cpu(parent, cpu);
+ struct cgroup_rstat_cpu *nrstatc;
+ struct cgroup **nextp;
+@@ -140,9 +139,12 @@ static struct cgroup *cgroup_rstat_cpu_pop_updated(struct cgroup *pos,
+ * updated stat.
+ */
+ smp_mb();
++
++ return pos;
+ }
+
+- return pos;
++ /* only happens for @root */
++ return NULL;
+ }
+
+ /* see cgroup_rstat_flush() */
+--
+2.19.1
+
--- /dev/null
+From 4782fdff5c29efe271b4a5194c4b90def1ca1332 Mon Sep 17 00:00:00 2001
+From: Namjae Jeon <linkinjeon@gmail.com>
+Date: Tue, 22 Jan 2019 09:46:45 +0900
+Subject: cifs: Accept validate negotiate if server return
+ NT_STATUS_NOT_SUPPORTED
+
+[ Upstream commit 969ae8e8d4ee54c99134d3895f2adf96047f5bee ]
+
+Old windows version or Netapp SMB server will return
+NT_STATUS_NOT_SUPPORTED since they do not allow or implement
+FSCTL_VALIDATE_NEGOTIATE_INFO. The client should accept the response
+provided it's properly signed.
+
+See
+https://blogs.msdn.microsoft.com/openspecification/2012/06/28/smb3-secure-dialect-negotiation/
+
+and
+
+MS-SMB2 validate negotiate response processing:
+https://msdn.microsoft.com/en-us/library/hh880630.aspx
+
+Samba client had already handled it.
+https://bugzilla.samba.org/attachment.cgi?id=13285&action=edit
+
+Signed-off-by: Namjae Jeon <linkinjeon@gmail.com>
+Signed-off-by: Steve French <stfrench@microsoft.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ fs/cifs/smb2pdu.c | 10 ++++++++--
+ 1 file changed, 8 insertions(+), 2 deletions(-)
+
+diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
+index 3d0db37d64ad..71f32d983384 100644
+--- a/fs/cifs/smb2pdu.c
++++ b/fs/cifs/smb2pdu.c
+@@ -881,8 +881,14 @@ int smb3_validate_negotiate(const unsigned int xid, struct cifs_tcon *tcon)
+ rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
+ FSCTL_VALIDATE_NEGOTIATE_INFO, true /* is_fsctl */,
+ (char *)pneg_inbuf, inbuflen, (char **)&pneg_rsp, &rsplen);
+-
+- if (rc != 0) {
++ if (rc == -EOPNOTSUPP) {
++ /*
++ * Old Windows versions or Netapp SMB server can return
++ * not supported error. Client should accept it.
++ */
++ cifs_dbg(VFS, "Server does not support validate negotiate\n");
++ return 0;
++ } else if (rc != 0) {
+ cifs_dbg(VFS, "validate protocol negotiate failed: %d\n", rc);
+ rc = -EIO;
+ goto out_free_inbuf;
+--
+2.19.1
+
--- /dev/null
+From 058f8e47562016bf71b47c9d9c9143d30902f95b Mon Sep 17 00:00:00 2001
+From: Yao Liu <yotta.liu@ucloud.cn>
+Date: Mon, 28 Jan 2019 19:47:28 +0800
+Subject: cifs: Fix NULL pointer dereference of devname
+
+[ Upstream commit 68e2672f8fbd1e04982b8d2798dd318bf2515dd2 ]
+
+There is a NULL pointer dereference of devname in strspn()
+
+The oops looks something like:
+
+ CIFS: Attempting to mount (null)
+ BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
+ ...
+ RIP: 0010:strspn+0x0/0x50
+ ...
+ Call Trace:
+ ? cifs_parse_mount_options+0x222/0x1710 [cifs]
+ ? cifs_get_volume_info+0x2f/0x80 [cifs]
+ cifs_setup_volume_info+0x20/0x190 [cifs]
+ cifs_get_volume_info+0x50/0x80 [cifs]
+ cifs_smb3_do_mount+0x59/0x630 [cifs]
+ ? ida_alloc_range+0x34b/0x3d0
+ cifs_do_mount+0x11/0x20 [cifs]
+ mount_fs+0x52/0x170
+ vfs_kern_mount+0x6b/0x170
+ do_mount+0x216/0xdc0
+ ksys_mount+0x83/0xd0
+ __x64_sys_mount+0x25/0x30
+ do_syscall_64+0x65/0x220
+ entry_SYSCALL_64_after_hwframe+0x49/0xbe
+
+Fix this by adding a NULL check on devname in cifs_parse_devname()
+
+Signed-off-by: Yao Liu <yotta.liu@ucloud.cn>
+Signed-off-by: Steve French <stfrench@microsoft.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ fs/cifs/connect.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
+index a5ea742654aa..f31339db45fd 100644
+--- a/fs/cifs/connect.c
++++ b/fs/cifs/connect.c
+@@ -1347,6 +1347,11 @@ cifs_parse_devname(const char *devname, struct smb_vol *vol)
+ const char *delims = "/\\";
+ size_t len;
+
++ if (unlikely(!devname || !*devname)) {
++ cifs_dbg(VFS, "Device name not specified.\n");
++ return -EINVAL;
++ }
++
+ /* make sure we have a valid UNC double delimiter prefix */
+ len = strspn(devname, delims);
+ if (len != 2)
+--
+2.19.1
+
--- /dev/null
+From 4622df061e0c5b34ff2657facdf0a706e208c0ef Mon Sep 17 00:00:00 2001
+From: Aurelien Aptel <aaptel@suse.com>
+Date: Thu, 14 Mar 2019 18:44:16 +0100
+Subject: CIFS: fix POSIX lock leak and invalid ptr deref
+
+[ Upstream commit bc31d0cdcfbadb6258b45db97e93b1c83822ba33 ]
+
+We have a customer reporting crashes in lock_get_status() with many
+"Leaked POSIX lock" messages preceeding the crash.
+
+ Leaked POSIX lock on dev=0x0:0x56 ...
+ Leaked POSIX lock on dev=0x0:0x56 ...
+ Leaked POSIX lock on dev=0x0:0x56 ...
+ Leaked POSIX lock on dev=0x0:0x53 ...
+ Leaked POSIX lock on dev=0x0:0x53 ...
+ Leaked POSIX lock on dev=0x0:0x53 ...
+ Leaked POSIX lock on dev=0x0:0x53 ...
+ POSIX: fl_owner=ffff8900e7b79380 fl_flags=0x1 fl_type=0x1 fl_pid=20709
+ Leaked POSIX lock on dev=0x0:0x4b ino...
+ Leaked locks on dev=0x0:0x4b ino=0xf911400000029:
+ POSIX: fl_owner=ffff89f41c870e00 fl_flags=0x1 fl_type=0x1 fl_pid=19592
+ stack segment: 0000 [#1] SMP
+ Modules linked in: binfmt_misc msr tcp_diag udp_diag inet_diag unix_diag af_packet_diag netlink_diag rpcsec_gss_krb5 arc4 ecb auth_rpcgss nfsv4 md4 nfs nls_utf8 lockd grace cifs sunrpc ccm dns_resolver fscache af_packet iscsi_ibft iscsi_boot_sysfs vmw_vsock_vmci_transport vsock xfs libcrc32c sb_edac edac_core crct10dif_pclmul crc32_pclmul ghash_clmulni_intel drbg ansi_cprng vmw_balloon aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd joydev pcspkr vmxnet3 i2c_piix4 vmw_vmci shpchp fjes processor button ac btrfs xor raid6_pq sr_mod cdrom ata_generic sd_mod ata_piix vmwgfx crc32c_intel drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm serio_raw ahci libahci drm libata vmw_pvscsi sg dm_multipath dm_mod scsi_dh_rdac scsi_dh_emc scsi_dh_alua scsi_mod autofs4
+
+ Supported: Yes
+ CPU: 6 PID: 28250 Comm: lsof Not tainted 4.4.156-94.64-default #1
+ Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 04/05/2016
+ task: ffff88a345f28740 ti: ffff88c74005c000 task.ti: ffff88c74005c000
+ RIP: 0010:[<ffffffff8125dcab>] [<ffffffff8125dcab>] lock_get_status+0x9b/0x3b0
+ RSP: 0018:ffff88c74005fd90 EFLAGS: 00010202
+ RAX: ffff89bde83e20ae RBX: ffff89e870003d18 RCX: 0000000049534f50
+ RDX: ffffffff81a3541f RSI: ffffffff81a3544e RDI: ffff89bde83e20ae
+ RBP: 0026252423222120 R08: 0000000020584953 R09: 000000000000ffff
+ R10: 0000000000000000 R11: ffff88c74005fc70 R12: ffff89e5ca7b1340
+ R13: 00000000000050e5 R14: ffff89e870003d30 R15: ffff89e5ca7b1340
+ FS: 00007fafd64be800(0000) GS:ffff89f41fd00000(0000) knlGS:0000000000000000
+ CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
+ CR2: 0000000001c80018 CR3: 000000a522048000 CR4: 0000000000360670
+ DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
+ DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
+ Stack:
+ 0000000000000208 ffffffff81a3d6b6 ffff89e870003d30 ffff89e870003d18
+ ffff89e5ca7b1340 ffff89f41738d7c0 ffff89e870003d30 ffff89e5ca7b1340
+ ffffffff8125e08f 0000000000000000 ffff89bc22b67d00 ffff88c74005ff28
+ Call Trace:
+ [<ffffffff8125e08f>] locks_show+0x2f/0x70
+ [<ffffffff81230ad1>] seq_read+0x251/0x3a0
+ [<ffffffff81275bbc>] proc_reg_read+0x3c/0x70
+ [<ffffffff8120e456>] __vfs_read+0x26/0x140
+ [<ffffffff8120e9da>] vfs_read+0x7a/0x120
+ [<ffffffff8120faf2>] SyS_read+0x42/0xa0
+ [<ffffffff8161cbc3>] entry_SYSCALL_64_fastpath+0x1e/0xb7
+
+When Linux closes a FD (close(), close-on-exec, dup2(), ...) it calls
+filp_close() which also removes all posix locks.
+
+The lock struct is initialized like so in filp_close() and passed
+down to cifs
+
+ ...
+ lock.fl_type = F_UNLCK;
+ lock.fl_flags = FL_POSIX | FL_CLOSE;
+ lock.fl_start = 0;
+ lock.fl_end = OFFSET_MAX;
+ ...
+
+Note the FL_CLOSE flag, which hints the VFS code that this unlocking
+is done for closing the fd.
+
+filp_close()
+ locks_remove_posix(filp, id);
+ vfs_lock_file(filp, F_SETLK, &lock, NULL);
+ return filp->f_op->lock(filp, cmd, fl) => cifs_lock()
+ rc = cifs_setlk(file, flock, type, wait_flag, posix_lck, lock, unlock, xid);
+ rc = server->ops->mand_unlock_range(cfile, flock, xid);
+ if (flock->fl_flags & FL_POSIX && !rc)
+ rc = locks_lock_file_wait(file, flock)
+
+Notice how we don't call locks_lock_file_wait() which does the
+generic VFS lock/unlock/wait work on the inode if rc != 0.
+
+If we are closing the handle, the SMB server is supposed to remove any
+locks associated with it. Similarly, cifs.ko frees and wakes up any
+lock and lock waiter when closing the file:
+
+cifs_close()
+ cifsFileInfo_put(file->private_data)
+ /*
+ * Delete any outstanding lock records. We'll lose them when the file
+ * is closed anyway.
+ */
+ down_write(&cifsi->lock_sem);
+ list_for_each_entry_safe(li, tmp, &cifs_file->llist->locks, llist) {
+ list_del(&li->llist);
+ cifs_del_lock_waiters(li);
+ kfree(li);
+ }
+ list_del(&cifs_file->llist->llist);
+ kfree(cifs_file->llist);
+ up_write(&cifsi->lock_sem);
+
+So we can safely ignore unlocking failures in cifs_lock() if they
+happen with the FL_CLOSE flag hint set as both the server and the
+client take care of it during the actual closing.
+
+This is not a proper fix for the unlocking failure but it's safe and
+it seems to prevent the lock leakages and crashes the customer
+experiences.
+
+Signed-off-by: Aurelien Aptel <aaptel@suse.com>
+Signed-off-by: NeilBrown <neil@brown.name>
+Signed-off-by: Steve French <stfrench@microsoft.com>
+Acked-by: Pavel Shilovsky <pshilov@microsoft.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ fs/cifs/file.c | 14 +++++++++++++-
+ 1 file changed, 13 insertions(+), 1 deletion(-)
+
+diff --git a/fs/cifs/file.c b/fs/cifs/file.c
+index 08761a6a039d..d847132ab027 100644
+--- a/fs/cifs/file.c
++++ b/fs/cifs/file.c
+@@ -1631,8 +1631,20 @@ cifs_setlk(struct file *file, struct file_lock *flock, __u32 type,
+ rc = server->ops->mand_unlock_range(cfile, flock, xid);
+
+ out:
+- if (flock->fl_flags & FL_POSIX && !rc)
++ if (flock->fl_flags & FL_POSIX) {
++ /*
++ * If this is a request to remove all locks because we
++ * are closing the file, it doesn't matter if the
++ * unlocking failed as both cifs.ko and the SMB server
++ * remove the lock on file close
++ */
++ if (rc) {
++ cifs_dbg(VFS, "%s failed rc=%d\n", __func__, rc);
++ if (!(flock->fl_flags & FL_CLOSE))
++ return rc;
++ }
+ rc = locks_lock_file_wait(file, flock);
++ }
+ return rc;
+ }
+
+--
+2.19.1
+
--- /dev/null
+From 94acb9c9d7b2773c49a7326f73b39b7c32bf193b Mon Sep 17 00:00:00 2001
+From: Louis Taylor <louis@kragniz.eu>
+Date: Wed, 27 Feb 2019 22:25:15 +0000
+Subject: cifs: use correct format characters
+
+[ Upstream commit 259594bea574e515a148171b5cd84ce5cbdc028a ]
+
+When compiling with -Wformat, clang emits the following warnings:
+
+fs/cifs/smb1ops.c:312:20: warning: format specifies type 'unsigned
+short' but the argument has type 'unsigned int' [-Wformat]
+ tgt_total_cnt, total_in_tgt);
+ ^~~~~~~~~~~~
+
+fs/cifs/cifs_dfs_ref.c:289:4: warning: format specifies type 'short'
+but the argument has type 'int' [-Wformat]
+ ref->flags, ref->server_type);
+ ^~~~~~~~~~
+
+fs/cifs/cifs_dfs_ref.c:289:16: warning: format specifies type 'short'
+but the argument has type 'int' [-Wformat]
+ ref->flags, ref->server_type);
+ ^~~~~~~~~~~~~~~~
+
+fs/cifs/cifs_dfs_ref.c:291:4: warning: format specifies type 'short'
+but the argument has type 'int' [-Wformat]
+ ref->ref_flag, ref->path_consumed);
+ ^~~~~~~~~~~~~
+
+fs/cifs/cifs_dfs_ref.c:291:19: warning: format specifies type 'short'
+but the argument has type 'int' [-Wformat]
+ ref->ref_flag, ref->path_consumed);
+ ^~~~~~~~~~~~~~~~~~
+The types of these arguments are unconditionally defined, so this patch
+updates the format character to the correct ones for ints and unsigned
+ints.
+
+Link: https://github.com/ClangBuiltLinux/linux/issues/378
+
+Signed-off-by: Louis Taylor <louis@kragniz.eu>
+Signed-off-by: Steve French <stfrench@microsoft.com>
+Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ fs/cifs/cifs_dfs_ref.c | 4 ++--
+ fs/cifs/smb1ops.c | 2 +-
+ 2 files changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/fs/cifs/cifs_dfs_ref.c b/fs/cifs/cifs_dfs_ref.c
+index 6b61df117fd4..563e2f6268c3 100644
+--- a/fs/cifs/cifs_dfs_ref.c
++++ b/fs/cifs/cifs_dfs_ref.c
+@@ -271,9 +271,9 @@ static void dump_referral(const struct dfs_info3_param *ref)
+ {
+ cifs_dbg(FYI, "DFS: ref path: %s\n", ref->path_name);
+ cifs_dbg(FYI, "DFS: node path: %s\n", ref->node_name);
+- cifs_dbg(FYI, "DFS: fl: %hd, srv_type: %hd\n",
++ cifs_dbg(FYI, "DFS: fl: %d, srv_type: %d\n",
+ ref->flags, ref->server_type);
+- cifs_dbg(FYI, "DFS: ref_flags: %hd, path_consumed: %hd\n",
++ cifs_dbg(FYI, "DFS: ref_flags: %d, path_consumed: %d\n",
+ ref->ref_flag, ref->path_consumed);
+ }
+
+diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
+index 378151e09e91..47db8eb6cbcf 100644
+--- a/fs/cifs/smb1ops.c
++++ b/fs/cifs/smb1ops.c
+@@ -308,7 +308,7 @@ coalesce_t2(char *second_buf, struct smb_hdr *target_hdr)
+ remaining = tgt_total_cnt - total_in_tgt;
+
+ if (remaining < 0) {
+- cifs_dbg(FYI, "Server sent too much data. tgt_total_cnt=%hu total_in_tgt=%hu\n",
++ cifs_dbg(FYI, "Server sent too much data. tgt_total_cnt=%hu total_in_tgt=%u\n",
+ tgt_total_cnt, total_in_tgt);
+ return -EPROTO;
+ }
+--
+2.19.1
+
--- /dev/null
+From 1bef0bea645709e0088f5da50fcf99cbb740cc0e Mon Sep 17 00:00:00 2001
+From: Katsuhiro Suzuki <katsuhiro@katsuster.net>
+Date: Mon, 11 Feb 2019 00:38:06 +0900
+Subject: clk: fractional-divider: check parent rate only if flag is set
+
+[ Upstream commit d13501a2bedfbea0983cc868d3f1dc692627f60d ]
+
+Custom approximation of fractional-divider may not need parent clock
+rate checking. For example Rockchip SoCs work fine using grand parent
+clock rate even if target rate is greater than parent.
+
+This patch checks parent clock rate only if CLK_SET_RATE_PARENT flag
+is set.
+
+For detailed example, clock tree of Rockchip I2S audio hardware.
+ - Clock rate of CPLL is 1.2GHz, GPLL is 491.52MHz.
+ - i2s1_div is integer divider can divide N (N is 1~128).
+ Input clock is CPLL or GPLL. Initial divider value is N = 1.
+ Ex) PLL = CPLL, N = 10, i2s1_div output rate is
+ CPLL / 10 = 1.2GHz / 10 = 120MHz
+ - i2s1_frac is fractional divider can divide input to x/y, x and
+ y are 16bit integer.
+
+CPLL --> | selector | ---> i2s1_div -+--> | selector | --> I2S1 MCLK
+GPLL --> | | ,--------------' | |
+ `--> i2s1_frac ---> | |
+
+Clock mux system try to choose suitable one from i2s1_div and
+i2s1_frac for master clock (MCLK) of I2S1.
+
+Bad scenario as follows:
+ - Try to set MCLK to 8.192MHz (32kHz audio replay)
+ Candidate setting is
+ - i2s1_div: GPLL / 60 = 8.192MHz
+ i2s1_div candidate is exactly same as target clock rate, so mux
+ choose this clock source. i2s1_div output rate is changed
+ 491.52MHz -> 8.192MHz
+
+ - After that try to set to 11.2896MHz (44.1kHz audio replay)
+ Candidate settings are
+ - i2s1_div : CPLL / 107 = 11.214945MHz
+ - i2s1_frac: i2s1_div = 8.192MHz
+ This is because clk_fd_round_rate() thinks target rate
+ (11.2896MHz) is higher than parent rate (i2s1_div = 8.192MHz)
+ and returns parent clock rate.
+
+Above is current upstreamed behavior. Clock mux system choose
+i2s1_div, but this clock rate is not acceptable for I2S driver, so
+users cannot replay audio.
+
+Expected behavior is:
+ - Try to set master clock to 11.2896MHz (44.1kHz audio replay)
+ Candidate settings are
+ - i2s1_div : CPLL / 107 = 11.214945MHz
+ - i2s1_frac: i2s1_div * 147/6400 = 11.2896MHz
+ Change i2s1_div to GPLL / 1 = 491.52MHz at same
+ time.
+
+If apply this commit, clk_fd_round_rate() calls custom approximate
+function of Rockchip even if target rate is higher than parent.
+Custom function changes both grand parent (i2s1_div) and parent
+(i2s_frac) settings at same time. Clock mux system can choose
+i2s1_frac and audio works fine.
+
+Signed-off-by: Katsuhiro Suzuki <katsuhiro@katsuster.net>
+Reviewed-by: Heiko Stuebner <heiko@sntech.de>
+[sboyd@kernel.org: Make function into a macro instead]
+Signed-off-by: Stephen Boyd <sboyd@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/clk/clk-fractional-divider.c | 2 +-
+ include/linux/clk-provider.h | 3 +++
+ 2 files changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/clk/clk-fractional-divider.c b/drivers/clk/clk-fractional-divider.c
+index fdf625fb10fa..083daa293280 100644
+--- a/drivers/clk/clk-fractional-divider.c
++++ b/drivers/clk/clk-fractional-divider.c
+@@ -77,7 +77,7 @@ static long clk_fd_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long m, n;
+ u64 ret;
+
+- if (!rate || rate >= *parent_rate)
++ if (!rate || (!clk_hw_can_set_rate_parent(hw) && rate >= *parent_rate))
+ return *parent_rate;
+
+ if (fd->approximation)
+diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
+index 08b1aa70a38d..d1b6d2c3ada6 100644
+--- a/include/linux/clk-provider.h
++++ b/include/linux/clk-provider.h
+@@ -782,6 +782,9 @@ unsigned int __clk_get_enable_count(struct clk *clk);
+ unsigned long clk_hw_get_rate(const struct clk_hw *hw);
+ unsigned long __clk_get_flags(struct clk *clk);
+ unsigned long clk_hw_get_flags(const struct clk_hw *hw);
++#define clk_hw_can_set_rate_parent(hw) \
++ (clk_hw_get_flags((hw)) & CLK_SET_RATE_PARENT)
++
+ bool clk_hw_is_prepared(const struct clk_hw *hw);
+ bool clk_hw_rate_is_protected(const struct clk_hw *hw);
+ bool clk_hw_is_enabled(const struct clk_hw *hw);
+--
+2.19.1
+
--- /dev/null
+From 74ff35f42a83cc6494c6a55242b436a854c1a7a9 Mon Sep 17 00:00:00 2001
+From: Jerome Brunet <jbrunet@baylibre.com>
+Date: Fri, 21 Dec 2018 17:02:36 +0100
+Subject: clk: meson: clean-up clock registration
+
+[ Upstream commit 8d9981efbcab066d17af4d3c85c169200f6f78df ]
+
+Order, ids and size between the table of regmap clocks and the onecell
+data table could be different.
+
+Set regmap pointer in all the regmap clocks before starting the
+registration using the onecell data, to make sure we don't
+get into an incoherent situation.
+
+Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
+Acked-by: Neil Armstrong <narmstrong@baylibre.com>
+Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
+Link: https://lkml.kernel.org/r/20181221160239.26265-3-jbrunet@baylibre.com
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/clk/meson/meson-aoclk.c | 15 ++++++++++-----
+ 1 file changed, 10 insertions(+), 5 deletions(-)
+
+diff --git a/drivers/clk/meson/meson-aoclk.c b/drivers/clk/meson/meson-aoclk.c
+index f965845917e3..258c8d259ea1 100644
+--- a/drivers/clk/meson/meson-aoclk.c
++++ b/drivers/clk/meson/meson-aoclk.c
+@@ -65,15 +65,20 @@ int meson_aoclkc_probe(struct platform_device *pdev)
+ return ret;
+ }
+
+- /*
+- * Populate regmap and register all clks
+- */
+- for (clkid = 0; clkid < data->num_clks; clkid++) {
++ /* Populate regmap */
++ for (clkid = 0; clkid < data->num_clks; clkid++)
+ data->clks[clkid]->map = regmap;
+
++ /* Register all clks */
++ for (clkid = 0; clkid < data->hw_data->num; clkid++) {
++ if (!data->hw_data->hws[clkid])
++ continue;
++
+ ret = devm_clk_hw_register(dev, data->hw_data->hws[clkid]);
+- if (ret)
++ if (ret) {
++ dev_err(dev, "Clock registration failed\n");
+ return ret;
++ }
+ }
+
+ return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
+--
+2.19.1
+
--- /dev/null
+From 72268a5da9a9953f44719ef307e4576281e935b6 Mon Sep 17 00:00:00 2001
+From: Katsuhiro Suzuki <katsuhiro@katsuster.net>
+Date: Sun, 23 Dec 2018 01:42:49 +0900
+Subject: clk: rockchip: fix frac settings of GPLL clock for rk3328
+
+[ Upstream commit a0e447b0c50240a90ab84b7126b3c06b0bab4adc ]
+
+This patch fixes settings of GPLL frequency in fractional mode for
+rk3328. In this mode, FOUTVCO is calcurated by following formula:
+ FOUTVCO = FREF * FBDIV / REFDIV + ((FREF * FRAC / REFDIV) >> 24)
+
+The problem is in FREF * FRAC >> 24 term. This result always lacks
+one from target value is specified by rate member. For example first
+itme of rk3328_pll_frac_rate originally has
+ - rate : 1016064000
+ - refdiv: 3
+ - fbdiv : 127
+ - frac : 134217
+ - FREF * FBDIV / REFDIV = 1016000000
+ - (FREF * FRAC / REFDIV) >> 24 = 63999
+Thus calculated rate is 1016063999. It seems wrong.
+
+If frac has 134218 (it is increased 1 from original value), second
+term is 64000. All other items have same situation. So this patch
+adds 1 to frac member in all items of rk3328_pll_frac_rate.
+
+Signed-off-by: Katsuhiro Suzuki <katsuhiro@katsuster.net>
+Acked-by: Elaine Zhang <zhangqing@rock-chips.com>
+Signed-off-by: Heiko Stuebner <heiko@sntech.de>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/clk/rockchip/clk-rk3328.c | 12 ++++++------
+ 1 file changed, 6 insertions(+), 6 deletions(-)
+
+diff --git a/drivers/clk/rockchip/clk-rk3328.c b/drivers/clk/rockchip/clk-rk3328.c
+index 2c5426607790..e431661fe874 100644
+--- a/drivers/clk/rockchip/clk-rk3328.c
++++ b/drivers/clk/rockchip/clk-rk3328.c
+@@ -78,17 +78,17 @@ static struct rockchip_pll_rate_table rk3328_pll_rates[] = {
+
+ static struct rockchip_pll_rate_table rk3328_pll_frac_rates[] = {
+ /* _mhz, _refdiv, _fbdiv, _postdiv1, _postdiv2, _dsmpd, _frac */
+- RK3036_PLL_RATE(1016064000, 3, 127, 1, 1, 0, 134217),
++ RK3036_PLL_RATE(1016064000, 3, 127, 1, 1, 0, 134218),
+ /* vco = 1016064000 */
+- RK3036_PLL_RATE(983040000, 24, 983, 1, 1, 0, 671088),
++ RK3036_PLL_RATE(983040000, 24, 983, 1, 1, 0, 671089),
+ /* vco = 983040000 */
+- RK3036_PLL_RATE(491520000, 24, 983, 2, 1, 0, 671088),
++ RK3036_PLL_RATE(491520000, 24, 983, 2, 1, 0, 671089),
+ /* vco = 983040000 */
+- RK3036_PLL_RATE(61440000, 6, 215, 7, 2, 0, 671088),
++ RK3036_PLL_RATE(61440000, 6, 215, 7, 2, 0, 671089),
+ /* vco = 860156000 */
+- RK3036_PLL_RATE(56448000, 12, 451, 4, 4, 0, 9797894),
++ RK3036_PLL_RATE(56448000, 12, 451, 4, 4, 0, 9797895),
+ /* vco = 903168000 */
+- RK3036_PLL_RATE(40960000, 12, 409, 4, 5, 0, 10066329),
++ RK3036_PLL_RATE(40960000, 12, 409, 4, 5, 0, 10066330),
+ /* vco = 819200000 */
+ { /* sentinel */ },
+ };
+--
+2.19.1
+
--- /dev/null
+From d7e2c67d47fe4591ff6f6efc3916b2de1f0ff3b6 Mon Sep 17 00:00:00 2001
+From: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
+Date: Mon, 25 Feb 2019 10:54:01 -0700
+Subject: coresight: etm4x: Add support to enable ETMv4.2
+
+[ Upstream commit 5666dfd1d8a45a167f0d8b4ef47ea7f780b1f24a ]
+
+SDM845 has ETMv4.2 and can use the existing etm4x driver.
+But the current etm driver checks only for ETMv4.0 and
+errors out for other etm4x versions. This patch adds this
+missing support to enable SoC's with ETMv4x to use same
+driver by checking only the ETM architecture major version
+number.
+
+Without this change, we get below error during etm probe:
+
+/ # dmesg | grep etm
+[ 6.660093] coresight-etm4x: probe of 7040000.etm failed with error -22
+[ 6.666902] coresight-etm4x: probe of 7140000.etm failed with error -22
+[ 6.673708] coresight-etm4x: probe of 7240000.etm failed with error -22
+[ 6.680511] coresight-etm4x: probe of 7340000.etm failed with error -22
+[ 6.687313] coresight-etm4x: probe of 7440000.etm failed with error -22
+[ 6.694113] coresight-etm4x: probe of 7540000.etm failed with error -22
+[ 6.700914] coresight-etm4x: probe of 7640000.etm failed with error -22
+[ 6.707717] coresight-etm4x: probe of 7740000.etm failed with error -22
+
+With this change, etm probe is successful:
+
+/ # dmesg | grep etm
+[ 6.659198] coresight-etm4x 7040000.etm: CPU0: ETM v4.2 initialized
+[ 6.665848] coresight-etm4x 7140000.etm: CPU1: ETM v4.2 initialized
+[ 6.672493] coresight-etm4x 7240000.etm: CPU2: ETM v4.2 initialized
+[ 6.679129] coresight-etm4x 7340000.etm: CPU3: ETM v4.2 initialized
+[ 6.685770] coresight-etm4x 7440000.etm: CPU4: ETM v4.2 initialized
+[ 6.692403] coresight-etm4x 7540000.etm: CPU5: ETM v4.2 initialized
+[ 6.699024] coresight-etm4x 7640000.etm: CPU6: ETM v4.2 initialized
+[ 6.705646] coresight-etm4x 7740000.etm: CPU7: ETM v4.2 initialized
+
+Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
+Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
+Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/hwtracing/coresight/coresight-etm4x.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c b/drivers/hwtracing/coresight/coresight-etm4x.c
+index 1d94ebec027b..2bce7cf0b0af 100644
+--- a/drivers/hwtracing/coresight/coresight-etm4x.c
++++ b/drivers/hwtracing/coresight/coresight-etm4x.c
+@@ -54,7 +54,8 @@ static void etm4_os_unlock(struct etmv4_drvdata *drvdata)
+
+ static bool etm4_arch_supported(u8 arch)
+ {
+- switch (arch) {
++ /* Mask out the minor version number */
++ switch (arch & 0xf0) {
+ case ETM_ARCH_V4:
+ break;
+ default:
+--
+2.19.1
+
--- /dev/null
+From 39f7e50ea91f5da025fcdbc731e2b2424088b567 Mon Sep 17 00:00:00 2001
+From: Valentin Schneider <valentin.schneider@arm.com>
+Date: Wed, 19 Dec 2018 18:23:15 +0000
+Subject: cpu/hotplug: Mute hotplug lockdep during init
+
+[ Upstream commit ce48c457b95316b9a01b5aa9d4456ce820df94b4 ]
+
+Since we've had:
+
+ commit cb538267ea1e ("jump_label/lockdep: Assert we hold the hotplug lock for _cpuslocked() operations")
+
+we've been getting some lockdep warnings during init, such as on HiKey960:
+
+[ 0.820495] WARNING: CPU: 4 PID: 0 at kernel/cpu.c:316 lockdep_assert_cpus_held+0x3c/0x48
+[ 0.820498] Modules linked in:
+[ 0.820509] CPU: 4 PID: 0 Comm: swapper/4 Tainted: G S 4.20.0-rc5-00051-g4cae42a #34
+[ 0.820511] Hardware name: HiKey960 (DT)
+[ 0.820516] pstate: 600001c5 (nZCv dAIF -PAN -UAO)
+[ 0.820520] pc : lockdep_assert_cpus_held+0x3c/0x48
+[ 0.820523] lr : lockdep_assert_cpus_held+0x38/0x48
+[ 0.820526] sp : ffff00000a9cbe50
+[ 0.820528] x29: ffff00000a9cbe50 x28: 0000000000000000
+[ 0.820533] x27: 00008000b69e5000 x26: ffff8000bff4cfe0
+[ 0.820537] x25: ffff000008ba69e0 x24: 0000000000000001
+[ 0.820541] x23: ffff000008fce000 x22: ffff000008ba70c8
+[ 0.820545] x21: 0000000000000001 x20: 0000000000000003
+[ 0.820548] x19: ffff00000a35d628 x18: ffffffffffffffff
+[ 0.820552] x17: 0000000000000000 x16: 0000000000000000
+[ 0.820556] x15: ffff00000958f848 x14: 455f3052464d4d34
+[ 0.820559] x13: 00000000769dde98 x12: ffff8000bf3f65a8
+[ 0.820564] x11: 0000000000000000 x10: ffff00000958f848
+[ 0.820567] x9 : ffff000009592000 x8 : ffff00000958f848
+[ 0.820571] x7 : ffff00000818ffa0 x6 : 0000000000000000
+[ 0.820574] x5 : 0000000000000000 x4 : 0000000000000001
+[ 0.820578] x3 : 0000000000000000 x2 : 0000000000000001
+[ 0.820582] x1 : 00000000ffffffff x0 : 0000000000000000
+[ 0.820587] Call trace:
+[ 0.820591] lockdep_assert_cpus_held+0x3c/0x48
+[ 0.820598] static_key_enable_cpuslocked+0x28/0xd0
+[ 0.820606] arch_timer_check_ool_workaround+0xe8/0x228
+[ 0.820610] arch_timer_starting_cpu+0xe4/0x2d8
+[ 0.820615] cpuhp_invoke_callback+0xe8/0xd08
+[ 0.820619] notify_cpu_starting+0x80/0xb8
+[ 0.820625] secondary_start_kernel+0x118/0x1d0
+
+We've also had a similar warning in sched_init_smp() for every
+asymmetric system that would enable the sched_asym_cpucapacity static
+key, although that was singled out in:
+
+ commit 40fa3780bac2 ("sched/core: Take the hotplug lock in sched_init_smp()")
+
+Those warnings are actually harmless, since we cannot have hotplug
+operations at the time they appear. Instead of starting to sprinkle
+useless hotplug lock operations in the init codepaths, mute the
+warnings until they start warning about real problems.
+
+Suggested-by: Peter Zijlstra <peterz@infradead.org>
+Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
+Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
+Cc: Andrew Morton <akpm@linux-foundation.org>
+Cc: Linus Torvalds <torvalds@linux-foundation.org>
+Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Cc: Will Deacon <will.deacon@arm.com>
+Cc: cai@gmx.us
+Cc: daniel.lezcano@linaro.org
+Cc: dietmar.eggemann@arm.com
+Cc: linux-arm-kernel@lists.infradead.org
+Cc: longman@redhat.com
+Cc: marc.zyngier@arm.com
+Cc: mark.rutland@arm.com
+Link: https://lkml.kernel.org/r/1545243796-23224-2-git-send-email-valentin.schneider@arm.com
+Signed-off-by: Ingo Molnar <mingo@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ kernel/cpu.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+diff --git a/kernel/cpu.c b/kernel/cpu.c
+index 9d0ecc4a0e79..dc250ec2c096 100644
+--- a/kernel/cpu.c
++++ b/kernel/cpu.c
+@@ -313,6 +313,15 @@ void cpus_write_unlock(void)
+
+ void lockdep_assert_cpus_held(void)
+ {
++ /*
++ * We can't have hotplug operations before userspace starts running,
++ * and some init codepaths will knowingly not take the hotplug lock.
++ * This is all valid, so mute lockdep until it makes sense to report
++ * unheld locks.
++ */
++ if (system_state < SYSTEM_RUNNING)
++ return;
++
+ percpu_rwsem_assert_held(&cpu_hotplug_lock);
+ }
+
+--
+2.19.1
+
--- /dev/null
+From 859ec1ddd6a82520744e8c25c3b1611385a1a299 Mon Sep 17 00:00:00 2001
+From: Erwan Velu <erwanaliasr1@gmail.com>
+Date: Wed, 20 Feb 2019 11:10:17 +0100
+Subject: cpufreq: acpi-cpufreq: Report if CPU doesn't support boost
+ technologies
+
+[ Upstream commit 1222d527f314c86a3b59a522115d62facc5a7965 ]
+
+There is some rare cases where CPB (and possibly IDA) are missing on
+processors.
+
+This is the case fixed by commit f7f3dc00f612 ("x86/cpu/AMD: Fix
+erratum 1076 (CPB bit)") and following.
+
+In such context, the boost status isn't reported by
+/sys/devices/system/cpu/cpufreq/boost.
+
+This commit is about printing a message to report that the CPU
+doesn't expose the boost capabilities.
+
+This message could help debugging platforms hit by this phenomena.
+
+Signed-off-by: Erwan Velu <e.velu@criteo.com>
+[ rjw: Change the message text somewhat ]
+Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/cpufreq/acpi-cpufreq.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
+index b61f4ec43e06..aca30f45172e 100644
+--- a/drivers/cpufreq/acpi-cpufreq.c
++++ b/drivers/cpufreq/acpi-cpufreq.c
+@@ -911,8 +911,10 @@ static void __init acpi_cpufreq_boost_init(void)
+ {
+ int ret;
+
+- if (!(boot_cpu_has(X86_FEATURE_CPB) || boot_cpu_has(X86_FEATURE_IDA)))
++ if (!(boot_cpu_has(X86_FEATURE_CPB) || boot_cpu_has(X86_FEATURE_IDA))) {
++ pr_debug("Boost capabilities not present in the processor\n");
+ return;
++ }
+
+ acpi_cpufreq_driver.set_boost = set_boost;
+ acpi_cpufreq_driver.boost_enabled = boost_state(0);
+--
+2.19.1
+
--- /dev/null
+From 8b6158503b7787337c734b581041f127bb01aa7b Mon Sep 17 00:00:00 2001
+From: Eric Biggers <ebiggers@google.com>
+Date: Sat, 23 Feb 2019 00:23:23 -0800
+Subject: crypto: cavium/zip - fix collision with generic cra_driver_name
+
+[ Upstream commit 41798036430015ad45137db2d4c213cd77fd0251 ]
+
+The cavium/zip implementation of the deflate compression algorithm is
+incorrectly being registered under the generic driver name, which
+prevents the generic implementation from being registered with the
+crypto API when CONFIG_CRYPTO_DEV_CAVIUM_ZIP=y. Similarly the lzs
+algorithm (which does not currently have a generic implementation...)
+is incorrectly being registered as lzs-generic.
+
+Fix the naming collision by adding a suffix "-cavium" to the
+cra_driver_name of the cavium/zip algorithms.
+
+Fixes: 640035a2dc55 ("crypto: zip - Add ThunderX ZIP driver core")
+Cc: Mahipal Challa <mahipalreddy2006@gmail.com>
+Cc: Jan Glauber <jglauber@cavium.com>
+Signed-off-by: Eric Biggers <ebiggers@google.com>
+Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/crypto/cavium/zip/zip_main.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/crypto/cavium/zip/zip_main.c b/drivers/crypto/cavium/zip/zip_main.c
+index be055b9547f6..6183f9128a8a 100644
+--- a/drivers/crypto/cavium/zip/zip_main.c
++++ b/drivers/crypto/cavium/zip/zip_main.c
+@@ -351,6 +351,7 @@ static struct pci_driver zip_driver = {
+
+ static struct crypto_alg zip_comp_deflate = {
+ .cra_name = "deflate",
++ .cra_driver_name = "deflate-cavium",
+ .cra_flags = CRYPTO_ALG_TYPE_COMPRESS,
+ .cra_ctxsize = sizeof(struct zip_kernel_ctx),
+ .cra_priority = 300,
+@@ -365,6 +366,7 @@ static struct crypto_alg zip_comp_deflate = {
+
+ static struct crypto_alg zip_comp_lzs = {
+ .cra_name = "lzs",
++ .cra_driver_name = "lzs-cavium",
+ .cra_flags = CRYPTO_ALG_TYPE_COMPRESS,
+ .cra_ctxsize = sizeof(struct zip_kernel_ctx),
+ .cra_priority = 300,
+@@ -384,7 +386,7 @@ static struct scomp_alg zip_scomp_deflate = {
+ .decompress = zip_scomp_decompress,
+ .base = {
+ .cra_name = "deflate",
+- .cra_driver_name = "deflate-scomp",
++ .cra_driver_name = "deflate-scomp-cavium",
+ .cra_module = THIS_MODULE,
+ .cra_priority = 300,
+ }
+@@ -397,7 +399,7 @@ static struct scomp_alg zip_scomp_lzs = {
+ .decompress = zip_scomp_decompress,
+ .base = {
+ .cra_name = "lzs",
+- .cra_driver_name = "lzs-scomp",
++ .cra_driver_name = "lzs-scomp-cavium",
+ .cra_module = THIS_MODULE,
+ .cra_priority = 300,
+ }
+--
+2.19.1
+
--- /dev/null
+From 058592583359651b5fc125007dfa780c3fb6daf9 Mon Sep 17 00:00:00 2001
+From: Julia Lawall <Julia.Lawall@lip6.fr>
+Date: Sat, 23 Feb 2019 14:20:39 +0100
+Subject: crypto: crypto4xx - add missing of_node_put after
+ of_device_is_available
+
+[ Upstream commit 8c2b43d2d85b48a97d2f8279278a4aac5b45f925 ]
+
+Add an of_node_put when a tested device node is not available.
+
+The semantic patch that fixes this problem is as follows
+(http://coccinelle.lip6.fr):
+
+// <smpl>
+@@
+identifier f;
+local idexpression e;
+expression x;
+@@
+
+e = f(...);
+... when != of_node_put(e)
+ when != x = e
+ when != e = x
+ when any
+if (<+...of_device_is_available(e)...+>) {
+ ... when != of_node_put(e)
+(
+ return e;
+|
++ of_node_put(e);
+ return ...;
+)
+}
+// </smpl>
+
+Fixes: 5343e674f32fb ("crypto4xx: integrate ppc4xx-rng into crypto4xx")
+Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
+Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/crypto/amcc/crypto4xx_trng.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/crypto/amcc/crypto4xx_trng.c b/drivers/crypto/amcc/crypto4xx_trng.c
+index 5e63742b0d22..53ab1f140a26 100644
+--- a/drivers/crypto/amcc/crypto4xx_trng.c
++++ b/drivers/crypto/amcc/crypto4xx_trng.c
+@@ -80,8 +80,10 @@ void ppc4xx_trng_probe(struct crypto4xx_core_device *core_dev)
+
+ /* Find the TRNG device node and map it */
+ trng = of_find_matching_node(NULL, ppc4xx_trng_match);
+- if (!trng || !of_device_is_available(trng))
++ if (!trng || !of_device_is_available(trng)) {
++ of_node_put(trng);
+ return;
++ }
+
+ dev->trng_base = of_iomap(trng, 0);
+ of_node_put(trng);
+--
+2.19.1
+
--- /dev/null
+From a13a43f1b0f1fee784892cd84aece7f07bb5499e Mon Sep 17 00:00:00 2001
+From: "Jason Cai (Xiang Feng)" <jason.cai.kern@gmail.com>
+Date: Sun, 20 Jan 2019 22:39:13 +0800
+Subject: dm thin: add sanity checks to thin-pool and external snapshot
+ creation
+
+[ Upstream commit 70de2cbda8a5d788284469e755f8b097d339c240 ]
+
+Invoking dm_get_device() twice on the same device path with different
+modes is dangerous. Because in that case, upgrade_mode() will alloc a
+new 'dm_dev' and free the old one, which may be referenced by a previous
+caller. Dereferencing the dangling pointer will trigger kernel NULL
+pointer dereference.
+
+The following two cases can reproduce this issue. Actually, they are
+invalid setups that must be disallowed, e.g.:
+
+1. Creating a thin-pool with read_only mode, and the same device as
+both metadata and data.
+
+dmsetup create thinp --table \
+ "0 41943040 thin-pool /dev/vdb /dev/vdb 128 0 1 read_only"
+
+BUG: unable to handle kernel NULL pointer dereference at 0000000000000080
+...
+Call Trace:
+ new_read+0xfb/0x110 [dm_bufio]
+ dm_bm_read_lock+0x43/0x190 [dm_persistent_data]
+ ? kmem_cache_alloc_trace+0x15c/0x1e0
+ __create_persistent_data_objects+0x65/0x3e0 [dm_thin_pool]
+ dm_pool_metadata_open+0x8c/0xf0 [dm_thin_pool]
+ pool_ctr.cold.79+0x213/0x913 [dm_thin_pool]
+ ? realloc_argv+0x50/0x70 [dm_mod]
+ dm_table_add_target+0x14e/0x330 [dm_mod]
+ table_load+0x122/0x2e0 [dm_mod]
+ ? dev_status+0x40/0x40 [dm_mod]
+ ctl_ioctl+0x1aa/0x3e0 [dm_mod]
+ dm_ctl_ioctl+0xa/0x10 [dm_mod]
+ do_vfs_ioctl+0xa2/0x600
+ ? handle_mm_fault+0xda/0x200
+ ? __do_page_fault+0x26c/0x4f0
+ ksys_ioctl+0x60/0x90
+ __x64_sys_ioctl+0x16/0x20
+ do_syscall_64+0x55/0x150
+ entry_SYSCALL_64_after_hwframe+0x44/0xa9
+
+2. Creating a external snapshot using the same thin-pool device.
+
+dmsetup create thinp --table \
+ "0 41943040 thin-pool /dev/vdc /dev/vdb 128 0 2 ignore_discard"
+dmsetup message /dev/mapper/thinp 0 "create_thin 0"
+dmsetup create snap --table \
+ "0 204800 thin /dev/mapper/thinp 0 /dev/mapper/thinp"
+
+BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
+...
+Call Trace:
+? __alloc_pages_nodemask+0x13c/0x2e0
+retrieve_status+0xa5/0x1f0 [dm_mod]
+? dm_get_live_or_inactive_table.isra.7+0x20/0x20 [dm_mod]
+ table_status+0x61/0xa0 [dm_mod]
+ ctl_ioctl+0x1aa/0x3e0 [dm_mod]
+ dm_ctl_ioctl+0xa/0x10 [dm_mod]
+ do_vfs_ioctl+0xa2/0x600
+ ksys_ioctl+0x60/0x90
+ ? ksys_write+0x4f/0xb0
+ __x64_sys_ioctl+0x16/0x20
+ do_syscall_64+0x55/0x150
+ entry_SYSCALL_64_after_hwframe+0x44/0xa9
+
+Signed-off-by: Jason Cai (Xiang Feng) <jason.cai@linux.alibaba.com>
+Signed-off-by: Mike Snitzer <snitzer@redhat.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/md/dm-thin.c | 13 +++++++++++++
+ 1 file changed, 13 insertions(+)
+
+diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
+index cd4220ee7004..435a2ee4a392 100644
+--- a/drivers/md/dm-thin.c
++++ b/drivers/md/dm-thin.c
+@@ -3283,6 +3283,13 @@ static int pool_ctr(struct dm_target *ti, unsigned argc, char **argv)
+ as.argc = argc;
+ as.argv = argv;
+
++ /* make sure metadata and data are different devices */
++ if (!strcmp(argv[0], argv[1])) {
++ ti->error = "Error setting metadata or data device";
++ r = -EINVAL;
++ goto out_unlock;
++ }
++
+ /*
+ * Set default pool features.
+ */
+@@ -4167,6 +4174,12 @@ static int thin_ctr(struct dm_target *ti, unsigned argc, char **argv)
+ tc->sort_bio_list = RB_ROOT;
+
+ if (argc == 3) {
++ if (!strcmp(argv[0], argv[2])) {
++ ti->error = "Error setting origin device";
++ r = -EINVAL;
++ goto bad_origin_dev;
++ }
++
+ r = dm_get_device(ti, argv[2], FMODE_READ, &origin_dev);
+ if (r) {
+ ti->error = "Error opening origin device";
+--
+2.19.1
+
--- /dev/null
+From 5f36c494f89d6bb3ecb545e9765b00f206ed7ec3 Mon Sep 17 00:00:00 2001
+From: Anders Roxell <anders.roxell@linaro.org>
+Date: Thu, 10 Jan 2019 12:15:35 +0100
+Subject: dmaengine: imx-dma: fix warning comparison of distinct pointer types
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+[ Upstream commit 9227ab5643cb8350449502dd9e3168a873ab0e3b ]
+
+The warning got introduced by commit 930507c18304 ("arm64: add basic
+Kconfig symbols for i.MX8"). Since it got enabled for arm64. The warning
+haven't been seen before since size_t was 'unsigned int' when built on
+arm32.
+
+../drivers/dma/imx-dma.c: In function ‘imxdma_sg_next’:
+../include/linux/kernel.h:846:29: warning: comparison of distinct pointer types lacks a cast
+ (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
+ ^~
+../include/linux/kernel.h:860:4: note: in expansion of macro ‘__typecheck’
+ (__typecheck(x, y) && __no_side_effects(x, y))
+ ^~~~~~~~~~~
+../include/linux/kernel.h:870:24: note: in expansion of macro ‘__safe_cmp’
+ __builtin_choose_expr(__safe_cmp(x, y), \
+ ^~~~~~~~~~
+../include/linux/kernel.h:879:19: note: in expansion of macro ‘__careful_cmp’
+ #define min(x, y) __careful_cmp(x, y, <)
+ ^~~~~~~~~~~~~
+../drivers/dma/imx-dma.c:288:8: note: in expansion of macro ‘min’
+ now = min(d->len, sg_dma_len(sg));
+ ^~~
+
+Rework so that we use min_t and pass in the size_t that returns the
+minimum of two values, using the specified type.
+
+Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
+Acked-by: Olof Johansson <olof@lixom.net>
+Reviewed-by: Fabio Estevam <festevam@gmail.com>
+Signed-off-by: Vinod Koul <vkoul@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/dma/imx-dma.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c
+index 118d371a2a4a..dfee0d895ce3 100644
+--- a/drivers/dma/imx-dma.c
++++ b/drivers/dma/imx-dma.c
+@@ -284,7 +284,7 @@ static inline int imxdma_sg_next(struct imxdma_desc *d)
+ struct scatterlist *sg = d->sg;
+ unsigned long now;
+
+- now = min(d->len, sg_dma_len(sg));
++ now = min_t(size_t, d->len, sg_dma_len(sg));
+ if (d->len != IMX_DMA_LENGTH_LOOP)
+ d->len -= now;
+
+--
+2.19.1
+
--- /dev/null
+From efc5aa57f3bc5a93a3cc20b2489d8cb121539a6b Mon Sep 17 00:00:00 2001
+From: Shunyong Yang <shunyong.yang@hxt-semitech.com>
+Date: Mon, 7 Jan 2019 09:34:02 +0800
+Subject: dmaengine: qcom_hidma: assign channel cookie correctly
+
+[ Upstream commit 546c0547555efca8ba8c120716c325435e29df1b ]
+
+When dma_cookie_complete() is called in hidma_process_completed(),
+dma_cookie_status() will return DMA_COMPLETE in hidma_tx_status(). Then,
+hidma_txn_is_success() will be called to use channel cookie
+mchan->last_success to do additional DMA status check. Current code
+assigns mchan->last_success after dma_cookie_complete(). This causes
+a race condition of dma_cookie_status() returns DMA_COMPLETE before
+mchan->last_success is assigned correctly. The race will cause
+hidma_tx_status() return DMA_ERROR but the transaction is actually a
+success. Moreover, in async_tx case, it will cause a timeout panic
+in async_tx_quiesce().
+
+ Kernel panic - not syncing: async_tx_quiesce: DMA error waiting for
+ transaction
+ ...
+ Call trace:
+ [<ffff000008089994>] dump_backtrace+0x0/0x1f4
+ [<ffff000008089bac>] show_stack+0x24/0x2c
+ [<ffff00000891e198>] dump_stack+0x84/0xa8
+ [<ffff0000080da544>] panic+0x12c/0x29c
+ [<ffff0000045d0334>] async_tx_quiesce+0xa4/0xc8 [async_tx]
+ [<ffff0000045d03c8>] async_trigger_callback+0x70/0x1c0 [async_tx]
+ [<ffff0000048b7d74>] raid_run_ops+0x86c/0x1540 [raid456]
+ [<ffff0000048bd084>] handle_stripe+0x5e8/0x1c7c [raid456]
+ [<ffff0000048be9ec>] handle_active_stripes.isra.45+0x2d4/0x550 [raid456]
+ [<ffff0000048beff4>] raid5d+0x38c/0x5d0 [raid456]
+ [<ffff000008736538>] md_thread+0x108/0x168
+ [<ffff0000080fb1cc>] kthread+0x10c/0x138
+ [<ffff000008084d34>] ret_from_fork+0x10/0x18
+
+Cc: Joey Zheng <yu.zheng@hxt-semitech.com>
+Reviewed-by: Sinan Kaya <okaya@kernel.org>
+Signed-off-by: Shunyong Yang <shunyong.yang@hxt-semitech.com>
+Signed-off-by: Vinod Koul <vkoul@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/dma/qcom/hidma.c | 17 +++++++++--------
+ 1 file changed, 9 insertions(+), 8 deletions(-)
+
+diff --git a/drivers/dma/qcom/hidma.c b/drivers/dma/qcom/hidma.c
+index 43d4b00b8138..ea219bca116d 100644
+--- a/drivers/dma/qcom/hidma.c
++++ b/drivers/dma/qcom/hidma.c
+@@ -138,24 +138,25 @@ static void hidma_process_completed(struct hidma_chan *mchan)
+ desc = &mdesc->desc;
+ last_cookie = desc->cookie;
+
++ llstat = hidma_ll_status(mdma->lldev, mdesc->tre_ch);
++
+ spin_lock_irqsave(&mchan->lock, irqflags);
++ if (llstat == DMA_COMPLETE) {
++ mchan->last_success = last_cookie;
++ result.result = DMA_TRANS_NOERROR;
++ } else {
++ result.result = DMA_TRANS_ABORTED;
++ }
++
+ dma_cookie_complete(desc);
+ spin_unlock_irqrestore(&mchan->lock, irqflags);
+
+- llstat = hidma_ll_status(mdma->lldev, mdesc->tre_ch);
+ dmaengine_desc_get_callback(desc, &cb);
+
+ dma_run_dependencies(desc);
+
+ spin_lock_irqsave(&mchan->lock, irqflags);
+ list_move(&mdesc->node, &mchan->free);
+-
+- if (llstat == DMA_COMPLETE) {
+- mchan->last_success = last_cookie;
+- result.result = DMA_TRANS_NOERROR;
+- } else
+- result.result = DMA_TRANS_ABORTED;
+-
+ spin_unlock_irqrestore(&mchan->lock, irqflags);
+
+ dmaengine_desc_callback_invoke(&cb, &result);
+--
+2.19.1
+
--- /dev/null
+From 578d28fdd180b9fde07e417571a02e68d28d2f28 Mon Sep 17 00:00:00 2001
+From: Shunyong Yang <shunyong.yang@hxt-semitech.com>
+Date: Mon, 7 Jan 2019 09:32:14 +0800
+Subject: dmaengine: qcom_hidma: initialize tx flags in hidma_prep_dma_*
+
+[ Upstream commit 875aac8a46424e5b73a9ff7f40b83311b609e407 ]
+
+In async_tx_test_ack(), it uses flags in struct dma_async_tx_descriptor
+to check the ACK status. As hidma reuses the descriptor in a free list
+when hidma_prep_dma_*(memcpy/memset) is called, the flag will keep ACKed
+if the descriptor has been used before. This will cause a BUG_ON in
+async_tx_quiesce().
+
+ kernel BUG at crypto/async_tx/async_tx.c:282!
+ Internal error: Oops - BUG: 0 1 SMP
+ ...
+ task: ffff8017dd3ec000 task.stack: ffff8017dd3e8000
+ PC is at async_tx_quiesce+0x54/0x78 [async_tx]
+ LR is at async_trigger_callback+0x98/0x110 [async_tx]
+
+This patch initializes flags in dma_async_tx_descriptor by the flags
+passed from the caller when hidma_prep_dma_*(memcpy/memset) is called.
+
+Cc: Joey Zheng <yu.zheng@hxt-semitech.com>
+Reviewed-by: Sinan Kaya <okaya@kernel.org>
+Signed-off-by: Shunyong Yang <shunyong.yang@hxt-semitech.com>
+Signed-off-by: Vinod Koul <vkoul@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/dma/qcom/hidma.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/drivers/dma/qcom/hidma.c b/drivers/dma/qcom/hidma.c
+index ea219bca116d..411f91fde734 100644
+--- a/drivers/dma/qcom/hidma.c
++++ b/drivers/dma/qcom/hidma.c
+@@ -416,6 +416,7 @@ hidma_prep_dma_memcpy(struct dma_chan *dmach, dma_addr_t dest, dma_addr_t src,
+ if (!mdesc)
+ return NULL;
+
++ mdesc->desc.flags = flags;
+ hidma_ll_set_transfer_params(mdma->lldev, mdesc->tre_ch,
+ src, dest, len, flags,
+ HIDMA_TRE_MEMCPY);
+@@ -448,6 +449,7 @@ hidma_prep_dma_memset(struct dma_chan *dmach, dma_addr_t dest, int value,
+ if (!mdesc)
+ return NULL;
+
++ mdesc->desc.flags = flags;
+ hidma_ll_set_transfer_params(mdma->lldev, mdesc->tre_ch,
+ value, dest, len, flags,
+ HIDMA_TRE_MEMSET);
+--
+2.19.1
+
--- /dev/null
+From d0fc633161a3ea913f993f2869bf51ede1485df7 Mon Sep 17 00:00:00 2001
+From: Ben Dooks <ben.dooks@codethink.co.uk>
+Date: Wed, 21 Nov 2018 16:13:19 +0000
+Subject: dmaengine: tegra: avoid overflow of byte tracking
+
+[ Upstream commit e486df39305864604b7e25f2a95d51039517ac57 ]
+
+The dma_desc->bytes_transferred counter tracks the number of bytes
+moved by the DMA channel. This is then used to calculate the information
+passed back in the in the tegra_dma_tx_status callback, which is usually
+fine.
+
+When the DMA channel is configured as continous, then the bytes_transferred
+counter will increase over time and eventually overflow to become negative
+so the residue count will become invalid and the ALSA sound-dma code will
+report invalid hardware pointer values to the application. This results in
+some users becoming confused about the playout position and putting audio
+data in the wrong place.
+
+To fix this issue, always ensure the bytes_transferred field is modulo the
+size of the request. We only do this for the case of the cyclic transfer
+done ISR as anyone attempting to move 2GiB of DMA data in one transfer
+is unlikely.
+
+Note, we don't fix the issue that we should /never/ transfer a negative
+number of bytes so we could make those fields unsigned.
+
+Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
+Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
+Acked-by: Jon Hunter <jonathanh@nvidia.com>
+Signed-off-by: Vinod Koul <vkoul@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/dma/tegra20-apb-dma.c | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c
+index 9a558e30c461..8219ab88a507 100644
+--- a/drivers/dma/tegra20-apb-dma.c
++++ b/drivers/dma/tegra20-apb-dma.c
+@@ -636,7 +636,10 @@ static void handle_cont_sngl_cycle_dma_done(struct tegra_dma_channel *tdc,
+
+ sgreq = list_first_entry(&tdc->pending_sg_req, typeof(*sgreq), node);
+ dma_desc = sgreq->dma_desc;
+- dma_desc->bytes_transferred += sgreq->req_len;
++ /* if we dma for long enough the transfer count will wrap */
++ dma_desc->bytes_transferred =
++ (dma_desc->bytes_transferred + sgreq->req_len) %
++ dma_desc->bytes_requested;
+
+ /* Callback need to be call */
+ if (!dma_desc->cb_count)
+--
+2.19.1
+
--- /dev/null
+From 7b4400392eaadd91bcbe4c3aa48690f48072f50d Mon Sep 17 00:00:00 2001
+From: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
+Date: Fri, 25 Jan 2019 15:23:09 -0500
+Subject: drm/amd/display: Clear stream->mode_changed after commit
+
+[ Upstream commit d8d2f174bcc2c26c3485c70e0c6fe22b27bce739 ]
+
+[Why]
+The stream->mode_changed flag can persist in the following sequence
+of atomic commits:
+
+Commit 1:
+Enable CRTC0 (mode_changed = true), Enable CRTC1 (mode_changed = true)
+
+Commit 2:
+Disable CRTC1 (mode_changed = false)
+
+In this sequence we want to keep the exiting CRTC0 but it's not in the
+atomic state for the commit since it hasn't been modified. In this case
+the stream->mode_changed flag persists as true and we don't re-program
+the planes for the existing stream.
+
+[How]
+The flag needs to be cleared and it makes the most sense to do it within
+DC after the state has been committed. Nothing following dc_commit_state
+should think that the stream's mode has changed.
+
+Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
+Reviewed-by: Leo Li <sunpeng.li@amd.com>
+Acked-by: Tony Cheng <Tony.Cheng@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/gpu/drm/amd/display/dc/core/dc.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
+index 9045e6fa0780..bb0cda727605 100644
+--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
++++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
+@@ -958,6 +958,9 @@ static enum dc_status dc_commit_state_no_check(struct dc *dc, struct dc_state *c
+ /* pplib is notified if disp_num changed */
+ dc->hwss.set_bandwidth(dc, context, true);
+
++ for (i = 0; i < context->stream_count; i++)
++ context->streams[i]->mode_changed = false;
++
+ dc_release_state(dc->current_state);
+
+ dc->current_state = context;
+--
+2.19.1
+
--- /dev/null
+From 4c6f47cb5b996d03d677e690cf55d5c85370391a Mon Sep 17 00:00:00 2001
+From: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
+Date: Wed, 23 Jan 2019 13:50:17 -0500
+Subject: drm/amd/display: Disconnect mpcc when changing tg
+
+[ Upstream commit 77476360f173c127c191bfe8ca8113130ef283b8 ]
+
+[Why]
+This fixes an mpc programming error for the following sequence of
+atomic commits when pipe split is enabled:
+
+Commit 1: CRTC0 (plane 4, plane 3)
+
+Pipe 0: old_plane_state = A0, new_plane_state = A1, new_tg = T0
+Pipe 1: old_plane_state = B0, new_plane_state = B1, new_tg = T0
+Pipe 2: old_plane_state = A0, new_plane_state = A1, new_tg = T0
+Pipe 3: old_plane_state = B0, new_plane_state = B1, new_tg = T0
+
+Commit 2: CRTC0 (plane 3), CRTC1 (plane 2)
+
+Pipe 0: old_plane_state = A1, new_plane_state = A2, new_tg = T0
+Pipe 1: old_plane_state = B1, new_plane_state = B2, new_tg = T1
+Pipe 2: old_plane_state = A1, new_plane_state = NULL, new_tg = NULL
+Pipe 3: old_plane_state = B1, new_plane_state = NULL, new_tg = NULL
+
+In the second commit the assertion for mpcc in use is hit because
+mpcc disconnect never occurs for pipe 1. This is because the stream
+changes for pipe 1 and the opp_list is empty.
+
+This sequence occurs when running the
+"igt@kms_plane_multiple@atomic-pipe-A-tiling-none" test with two
+displays connected.
+
+[How]
+Expand the reset condition to include:
+
+"old_pipe_ctx->stream_res.tg != new_pipe_ctx->stream_res.tg"
+
+...but only when the plane state is non-NULL for both old and new.
+
+Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
+Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
+Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
+Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 7 ++++---
+ 1 file changed, 4 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+index 4058b59d9bea..a0355709abd1 100644
+--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
++++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+@@ -2336,9 +2336,10 @@ static void dcn10_apply_ctx_for_surface(
+ }
+ }
+
+- if (!pipe_ctx->plane_state &&
+- old_pipe_ctx->plane_state &&
+- old_pipe_ctx->stream_res.tg == tg) {
++ if ((!pipe_ctx->plane_state ||
++ pipe_ctx->stream_res.tg != old_pipe_ctx->stream_res.tg) &&
++ old_pipe_ctx->plane_state &&
++ old_pipe_ctx->stream_res.tg == tg) {
+
+ dc->hwss.plane_atomic_disconnect(dc, old_pipe_ctx);
+ removed_pipe[i] = true;
+--
+2.19.1
+
--- /dev/null
+From 707f01a9c6e68ee77855a702614d205ffc530791 Mon Sep 17 00:00:00 2001
+From: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
+Date: Wed, 23 Jan 2019 14:55:58 -0500
+Subject: drm/amd/display: Don't re-program planes for DPMS changes
+
+[ Upstream commit 5062b797db4103218fa00ee254417b8ecaab7401 ]
+
+[Why]
+There are opt1c lock warnings and CRTC read timeouts when running the
+"igt@kms_plane@plane-position-hole-dpms-pipe-*" tests. These are
+caused by trying to reprogram planes that are not in the current
+context.
+
+DPMS off removes the stream from the context. In this case:
+
+new_crtc_state->active_changed = true
+new_crtc_state->mode_changed = false
+
+The planes are reprogrammed before the stream is removed from the
+context because stream_state->mode_changed = false.
+
+For DPMS adds the stream and planes back to the context:
+
+new_crtc_state->active_changed = true
+new_crtc_state->mode_changed = false
+
+The planes are also reprogrammed here before the stream is added to the
+context because stream_state->mode_changed = true. They were not
+previously in the current context so warnings occur here.
+
+[How]
+Set stream_state->mode_changed = true when
+new_crtc_state->active_changed = true too.
+
+This prevents reprogramming before the context is applied in DC. The
+programming will be done after the context is applied.
+
+Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
+Reviewed-by: Sun peng Li <Sunpeng.Li@amd.com>
+Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
+Acked-by: Tony Cheng <Tony.Cheng@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+index c5ba9128b736..c57e85f08e23 100644
+--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
++++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+@@ -4368,7 +4368,8 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
+ static void amdgpu_dm_crtc_copy_transient_flags(struct drm_crtc_state *crtc_state,
+ struct dc_stream_state *stream_state)
+ {
+- stream_state->mode_changed = crtc_state->mode_changed;
++ stream_state->mode_changed =
++ crtc_state->mode_changed || crtc_state->active_changed;
+ }
+
+ static int amdgpu_dm_atomic_commit(struct drm_device *dev,
+--
+2.19.1
+
--- /dev/null
+From d8651683e0e7e60c4457459f8efd7c50d497ffd3 Mon Sep 17 00:00:00 2001
+From: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
+Date: Mon, 14 Jan 2019 16:04:10 -0500
+Subject: drm/amd/display: Enable vblank interrupt during CRC capture
+
+[ Upstream commit 428da2bdb05d76c48d0bd8fbfa2e4c102685be08 ]
+
+[Why]
+In order to read CRC events when CRC capture is enabled the vblank
+interrput handler needs to be running for the CRTC. The handler is
+enabled while there is an active vblank reference.
+
+When running IGT tests there will often be no active vblank reference
+but the test expects to read a CRC value. This is valid usage (and
+works on i915 since they have a CRC interrupt handler) so the reference
+to the vblank should be grabbed while capture is active.
+
+This issue was found running:
+
+igt@kms_plane_multiple@atomic-pipe-b-tiling-none
+
+The pipe-b is the only one in the initial commit and was not previously
+active so no vblank reference is grabbed. The vblank interrupt is
+not enabled and the test times out.
+
+[How]
+Keep a reference to the vblank as long as CRC capture is enabled.
+If userspace never explicitly disables it then the reference is
+also dropped when removing the CRTC from the context (stream = NULL).
+
+Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
+Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
+Reviewed-by: Sun peng Li <Sunpeng.Li@amd.com>
+Acked-by: Leo Li <sunpeng.li@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 14 ++++++-
+ .../drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c | 42 +++++++++----------
+ 2 files changed, 34 insertions(+), 22 deletions(-)
+
+diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+index c57e85f08e23..2b8b892eb846 100644
+--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
++++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+@@ -4390,10 +4390,22 @@ static int amdgpu_dm_atomic_commit(struct drm_device *dev,
+ */
+ for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
+ struct dm_crtc_state *dm_old_crtc_state = to_dm_crtc_state(old_crtc_state);
++ struct dm_crtc_state *dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
+ struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
+
+- if (drm_atomic_crtc_needs_modeset(new_crtc_state) && dm_old_crtc_state->stream)
++ if (drm_atomic_crtc_needs_modeset(new_crtc_state)
++ && dm_old_crtc_state->stream) {
++ /*
++ * CRC capture was enabled but not disabled.
++ * Release the vblank reference.
++ */
++ if (dm_new_crtc_state->crc_enabled) {
++ drm_crtc_vblank_put(crtc);
++ dm_new_crtc_state->crc_enabled = false;
++ }
++
+ manage_dm_interrupts(adev, acrtc, false);
++ }
+ }
+ /* Add check here for SoC's that support hardware cursor plane, to
+ * unset legacy_cursor_update */
+diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c
+index 6a6d977ddd7a..36a0bed9af07 100644
+--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c
++++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c
+@@ -51,6 +51,7 @@ int amdgpu_dm_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name,
+ {
+ struct dm_crtc_state *crtc_state = to_dm_crtc_state(crtc->state);
+ struct dc_stream_state *stream_state = crtc_state->stream;
++ bool enable;
+
+ enum amdgpu_dm_pipe_crc_source source = dm_parse_crc_source(src_name);
+
+@@ -65,28 +66,27 @@ int amdgpu_dm_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name,
+ return -EINVAL;
+ }
+
++ enable = (source == AMDGPU_DM_PIPE_CRC_SOURCE_AUTO);
++
++ if (!dc_stream_configure_crc(stream_state->ctx->dc, stream_state,
++ enable, enable))
++ return -EINVAL;
++
+ /* When enabling CRC, we should also disable dithering. */
+- if (source == AMDGPU_DM_PIPE_CRC_SOURCE_AUTO) {
+- if (dc_stream_configure_crc(stream_state->ctx->dc,
+- stream_state,
+- true, true)) {
+- crtc_state->crc_enabled = true;
+- dc_stream_set_dither_option(stream_state,
+- DITHER_OPTION_TRUN8);
+- }
+- else
+- return -EINVAL;
+- } else {
+- if (dc_stream_configure_crc(stream_state->ctx->dc,
+- stream_state,
+- false, false)) {
+- crtc_state->crc_enabled = false;
+- dc_stream_set_dither_option(stream_state,
+- DITHER_OPTION_DEFAULT);
+- }
+- else
+- return -EINVAL;
+- }
++ dc_stream_set_dither_option(stream_state,
++ enable ? DITHER_OPTION_TRUN8
++ : DITHER_OPTION_DEFAULT);
++
++ /*
++ * Reading the CRC requires the vblank interrupt handler to be
++ * enabled. Keep a reference until CRC capture stops.
++ */
++ if (!crtc_state->crc_enabled && enable)
++ drm_crtc_vblank_get(crtc);
++ else if (crtc_state->crc_enabled && !enable)
++ drm_crtc_vblank_put(crtc);
++
++ crtc_state->crc_enabled = enable;
+
+ *values_cnt = 3;
+ /* Reset crc_skipped on dm state */
+--
+2.19.1
+
--- /dev/null
+From 057e0ce959410357e62fc0b5ce47e07b4d427154 Mon Sep 17 00:00:00 2001
+From: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+Date: Fri, 4 Jan 2019 09:56:10 +0100
+Subject: drm: Auto-set allow_fb_modifiers when given modifiers at plane init
+
+[ Upstream commit 890880ddfdbe256083170866e49c87618b706ac7 ]
+
+When drivers pass non-empty lists of modifiers for initializing their
+planes, we can infer that they allow framebuffer modifiers and set the
+driver's allow_fb_modifiers mode config element.
+
+In case the allow_fb_modifiers element was not set (some drivers tend
+to set them after registering planes), the modifiers will still be
+registered but won't be available to userspace unless the flag is set
+later. However in that case, the IN_FORMATS blob won't be created.
+
+In order to avoid this case and generally reduce the trouble associated
+with the flag, always set allow_fb_modifiers when a non-empty list of
+format modifiers is passed at plane init.
+
+Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
+Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
+Link: https://patchwork.freedesktop.org/patch/msgid/20190104085610.5829-1-paul.kocialkowski@bootlin.com
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/gpu/drm/drm_plane.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
+index 6153cbda239f..d36b1be632d9 100644
+--- a/drivers/gpu/drm/drm_plane.c
++++ b/drivers/gpu/drm/drm_plane.c
+@@ -211,6 +211,9 @@ int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
+ format_modifier_count++;
+ }
+
++ if (format_modifier_count)
++ config->allow_fb_modifiers = true;
++
+ plane->modifier_count = format_modifier_count;
+ plane->modifiers = kmalloc_array(format_modifier_count,
+ sizeof(format_modifiers[0]),
+--
+2.19.1
+
--- /dev/null
+From 5e0b504e10740e949c3691a3a8e305ee7cfc07f1 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@linux.intel.com>
+Date: Fri, 28 Sep 2018 21:03:59 +0300
+Subject: drm/dp/mst: Configure no_stop_bit correctly for remote i2c xfers
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+[ Upstream commit c978ae9bde582e82a04c63a4071701691dd8b35c ]
+
+We aren't supposed to force a stop+start between every i2c msg
+when performing multi message transfers. This should eg. cause
+the DDC segment address to be reset back to 0 between writing
+the segment address and reading the actual EDID extension block.
+
+To quote the E-DDC spec:
+"... this standard requires that the segment pointer be
+ reset to 00h when a NO ACK or a STOP condition is received."
+
+Since we're going to touch this might as well consult the
+I2C_M_STOP flag to determine whether we want to force the stop
+or not.
+
+Cc: Brian Vincent <brainn@gmail.com>
+References: https://bugs.freedesktop.org/show_bug.cgi?id=108081
+Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
+Link: https://patchwork.freedesktop.org/patch/msgid/20180928180403.22499-1-ville.syrjala@linux.intel.com
+Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/gpu/drm/drm_dp_mst_topology.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
+index d708472d93c4..65f58e23e03d 100644
+--- a/drivers/gpu/drm/drm_dp_mst_topology.c
++++ b/drivers/gpu/drm/drm_dp_mst_topology.c
+@@ -3278,6 +3278,7 @@ static int drm_dp_mst_i2c_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs
+ msg.u.i2c_read.transactions[i].i2c_dev_id = msgs[i].addr;
+ msg.u.i2c_read.transactions[i].num_bytes = msgs[i].len;
+ msg.u.i2c_read.transactions[i].bytes = msgs[i].buf;
++ msg.u.i2c_read.transactions[i].no_stop_bit = !(msgs[i].flags & I2C_M_STOP);
+ }
+ msg.u.i2c_read.read_i2c_device_id = msgs[num - 1].addr;
+ msg.u.i2c_read.num_bytes_read = msgs[num - 1].len;
+--
+2.19.1
+
--- /dev/null
+From f850299bc8b21cd71287b1eed79c7aae16812a9c Mon Sep 17 00:00:00 2001
+From: Peter Wu <peter@lekensteyn.nl>
+Date: Sun, 23 Dec 2018 01:55:07 +0100
+Subject: drm/fb-helper: fix leaks in error path of drm_fb_helper_fbdev_setup
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+[ Upstream commit 00eb5b0da8d27b3c944bfc959c3344d665caae26 ]
+
+After drm_fb_helper_fbdev_setup calls drm_fb_helper_init,
+"dev->fb_helper" will be initialized (and thus drm_fb_helper_fini will
+have some effect). After that, drm_fb_helper_initial_config is called
+which may call the "fb_probe" driver callback.
+
+This driver callback may call drm_fb_helper_defio_init (as is done by
+drm_fb_helper_generic_probe) or set a framebuffer (as is done by bochs)
+as documented. These are normally cleaned up on exit by
+drm_fb_helper_fbdev_teardown which also calls drm_fb_helper_fini.
+
+If an error occurs after "fb_probe", but before setup is complete, then
+calling just drm_fb_helper_fini will leak resources. This was triggered
+by df2052cc922 ("bochs: convert to drm_fb_helper_fbdev_setup/teardown"):
+
+ [ 50.008030] bochsdrmfb: enable CONFIG_FB_LITTLE_ENDIAN to support this framebuffer
+ [ 50.009436] bochs-drm 0000:00:02.0: [drm:drm_fb_helper_fbdev_setup] *ERROR* fbdev: Failed to set configuration (ret=-38)
+ [ 50.011456] [drm] Initialized bochs-drm 1.0.0 20130925 for 0000:00:02.0 on minor 2
+ [ 50.013604] WARNING: CPU: 1 PID: 1 at drivers/gpu/drm/drm_mode_config.c:477 drm_mode_config_cleanup+0x280/0x2a0
+ [ 50.016175] CPU: 1 PID: 1 Comm: swapper/0 Tainted: G T 4.20.0-rc7 #1
+ [ 50.017732] EIP: drm_mode_config_cleanup+0x280/0x2a0
+ ...
+ [ 50.023155] Call Trace:
+ [ 50.023155] ? bochs_kms_fini+0x1e/0x30
+ [ 50.023155] ? bochs_unload+0x18/0x40
+
+This can be reproduced with QEMU and CONFIG_FB_LITTLE_ENDIAN=n.
+
+Link: https://lkml.kernel.org/r/20181221083226.GI23332@shao2-debian
+Link: https://lkml.kernel.org/r/20181223004315.GA11455@al
+Fixes: 8741216396b2 ("drm/fb-helper: Add drm_fb_helper_fbdev_setup/teardown()")
+Reported-by: kernel test robot <rong.a.chen@intel.com>
+Cc: Noralf Trønnes <noralf@tronnes.org>
+Signed-off-by: Peter Wu <peter@lekensteyn.nl>
+Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+Link: https://patchwork.freedesktop.org/patch/msgid/20181223005507.28328-1-peter@lekensteyn.nl
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/gpu/drm/drm_fb_helper.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
+index e65596617239..a0663f44e218 100644
+--- a/drivers/gpu/drm/drm_fb_helper.c
++++ b/drivers/gpu/drm/drm_fb_helper.c
+@@ -2877,7 +2877,7 @@ int drm_fb_helper_fbdev_setup(struct drm_device *dev,
+ return 0;
+
+ err_drm_fb_helper_fini:
+- drm_fb_helper_fini(fb_helper);
++ drm_fb_helper_fbdev_teardown(dev);
+
+ return ret;
+ }
+--
+2.19.1
+
--- /dev/null
+From 98e9c9d6078aabe6e0d2db577ed916d33ce66de2 Mon Sep 17 00:00:00 2001
+From: Daniel Vetter <daniel.vetter@ffwll.ch>
+Date: Mon, 17 Dec 2018 20:42:58 +0100
+Subject: drm/nouveau: Stop using drm_crtc_force_disable
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+[ Upstream commit 934c5b32a5e43d8de2ab4f1566f91d7c3bf8cb64 ]
+
+The correct way for legacy drivers to update properties that need to
+do a full modeset, is to do a full modeset.
+
+Note that we don't need to call the drm_mode_config_internal helper
+because we're not changing any of the refcounted paramters.
+
+v2: Fixup error handling (Ville). Since the old code didn't bother
+I decided to just delete it instead of adding even more code for just
+error handling.
+
+Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
+Reviewed-by: Alex Deucher <alexander.deucher@amd.com> (v1)
+Cc: Sean Paul <seanpaul@chromium.org>
+Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
+Link: https://patchwork.freedesktop.org/patch/msgid/20181217194303.14397-2-daniel.vetter@ffwll.ch
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/gpu/drm/nouveau/dispnv04/tvnv17.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c b/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c
+index 6a4ca139cf5d..8fd8124d72ba 100644
+--- a/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c
++++ b/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c
+@@ -750,7 +750,9 @@ static int nv17_tv_set_property(struct drm_encoder *encoder,
+ /* Disable the crtc to ensure a full modeset is
+ * performed whenever it's turned on again. */
+ if (crtc)
+- drm_crtc_force_disable(crtc);
++ drm_crtc_helper_set_mode(crtc, &crtc->mode,
++ crtc->x, crtc->y,
++ crtc->primary->fb);
+ }
+
+ return 0;
+--
+2.19.1
+
--- /dev/null
+From bb9550704501513f1b09934e57953a2d042ec9c6 Mon Sep 17 00:00:00 2001
+From: Julia Lawall <julia.lawall@lip6.fr>
+Date: Mon, 14 Jan 2019 17:44:56 +0100
+Subject: drm: rcar-du: add missing of_node_put
+
+[ Upstream commit 4c6d8fc20b09f9684743afd72e4dbc3f15524479 ]
+
+Add an of_node_put when the result of of_graph_get_remote_port_parent is
+not available.
+
+Add a second of_node_put if no encoder is selected (encoder remains NULL).
+
+The semantic match that finds the first problem is as follows
+(http://coccinelle.lip6.fr):
+
+// <smpl>
+@r exists@
+local idexpression e;
+expression x;
+@@
+e = of_graph_get_remote_port_parent(...);
+... when != x = e
+ when != true e == NULL
+ when != of_node_put(e)
+ when != of_fwnode_handle(e)
+(
+return e;
+|
+*return ...;
+)
+// </smpl>
+
+Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
+Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
+Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
+Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/gpu/drm/rcar-du/rcar_du_kms.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+index fb46df56f0c4..0386b454e221 100644
+--- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
++++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+@@ -300,6 +300,7 @@ static int rcar_du_encoders_init_one(struct rcar_du_device *rcdu,
+ dev_dbg(rcdu->dev,
+ "connected entity %pOF is disabled, skipping\n",
+ entity);
++ of_node_put(entity);
+ return -ENODEV;
+ }
+
+@@ -335,6 +336,7 @@ static int rcar_du_encoders_init_one(struct rcar_du_device *rcdu,
+ dev_warn(rcdu->dev,
+ "no encoder found for endpoint %pOF, skipping\n",
+ ep->local_node);
++ of_node_put(entity);
+ return -ENODEV;
+ }
+
+--
+2.19.1
+
--- /dev/null
+From 1d6a3f4b2f114058baaf378cd042c54f20a850f2 Mon Sep 17 00:00:00 2001
+From: Shayenne Moura <shayenneluzmoura@gmail.com>
+Date: Wed, 30 Jan 2019 14:06:36 -0200
+Subject: drm/vkms: Bugfix extra vblank frame
+
+[ Upstream commit def35e7c592616bc09be328de8795e5e624a3cf8 ]
+
+kms_flip tests are breaking on vkms when simulate vblank because vblank
+event sequence count returns one extra frame after arm vblank event to
+make a page flip.
+
+When vblank interrupt happens, userspace processes the vblank event and
+issues the next page flip command. Kernel calls queue_work to call
+commit_planes and arm the new page flip. The next vblank picks up the
+newly armed vblank event and vblank interrupt happens again.
+
+The arm and vblank event are asynchronous, then, on the next vblank, we
+receive x+2 from `get_vblank_timestamp`, instead x+1, although timestamp
+and vblank seqno matches.
+
+Function `get_vblank_timestamp` is reached by 2 ways:
+
+ - from `drm_mode_page_flip_ioctl`: driver is doing one atomic
+ operation to synchronize planes in the same output. There is no
+ vblank simulation, the `drm_crtc_arm_vblank_event` function adds 1
+ on vblank count, and the variable in_vblank_irq is false
+ - from `vkms_vblank_simulate`: since the driver is doing a vblank
+ simulation, the variable in_vblank_irq is true.
+
+Fix this problem subtracting one vblank period from vblank_time when
+`get_vblank_timestamp` is called from trace `drm_mode_page_flip_ioctl`,
+i.e., is not a real vblank interrupt, and getting the timestamp and
+vblank seqno when it is a real vblank interrupt.
+
+The reason for all this is that get_vblank_timestamp always supplies the
+timestamp for the next vblank event. The hrtimer is the vblank
+simulator, and it needs the correct previous value to present the next
+vblank. Since this is how hw timestamp registers work and what the
+vblank core expects.
+
+Signed-off-by: Shayenne Moura <shayenneluzmoura@gmail.com>
+Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
+Reviewed-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
+Signed-off-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
+Link: https://patchwork.freedesktop.org/patch/msgid/171e6e1c239cbca0c3df7183ed8acdfeeace9cf4.1548856186.git.shayenneluzmoura@gmail.com
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/gpu/drm/vkms/vkms_crtc.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/drivers/gpu/drm/vkms/vkms_crtc.c b/drivers/gpu/drm/vkms/vkms_crtc.c
+index 1ea2dd35bca9..0a271f762a0a 100644
+--- a/drivers/gpu/drm/vkms/vkms_crtc.c
++++ b/drivers/gpu/drm/vkms/vkms_crtc.c
+@@ -55,6 +55,9 @@ bool vkms_get_vblank_timestamp(struct drm_device *dev, unsigned int pipe,
+
+ *vblank_time = output->vblank_hrtimer.node.expires;
+
++ if (!in_vblank_irq)
++ *vblank_time -= output->period_ns;
++
+ return true;
+ }
+
+--
+2.19.1
+
--- /dev/null
+From 5e6006a2d2a7ed8cab350be7b3300b8d5619fc1c Mon Sep 17 00:00:00 2001
+From: Kai-Heng Feng <kai.heng.feng@canonical.com>
+Date: Tue, 11 Dec 2018 15:59:37 +0800
+Subject: e1000e: Exclude device from suspend direct complete optimization
+
+[ Upstream commit 59f58708c5047289589cbf6ee95146b76cf57d1e ]
+
+e1000e sets different WoL settings in system suspend callback and
+runtime suspend callback.
+
+The suspend direct complete optimization leaves e1000e in runtime
+suspended state with wrong WoL setting during system suspend.
+
+To fix this, we need to disable suspend direct complete optimization to
+let e1000e always use suspend callback to set correct WoL during system
+suspend.
+
+Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
+Tested-by: Aaron Brown <aaron.f.brown@intel.com>
+Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/ethernet/intel/e1000e/netdev.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
+index 23edc1364487..8b11682ebba2 100644
+--- a/drivers/net/ethernet/intel/e1000e/netdev.c
++++ b/drivers/net/ethernet/intel/e1000e/netdev.c
+@@ -7327,6 +7327,8 @@ static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+
+ e1000_print_device_info(adapter);
+
++ dev_pm_set_driver_flags(&pdev->dev, DPM_FLAG_NEVER_SKIP);
++
+ if (pci_dev_run_wake(pdev))
+ pm_runtime_put_noidle(&pdev->dev);
+
+--
+2.19.1
+
--- /dev/null
+From d4a4e6fab67157c3f0cbb95e18f0e28babd329d1 Mon Sep 17 00:00:00 2001
+From: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
+Date: Mon, 14 Jan 2019 16:29:30 +0300
+Subject: e1000e: fix cyclic resets at link up with active tx
+
+[ Upstream commit 0f9e980bf5ee1a97e2e401c846b2af989eb21c61 ]
+
+I'm seeing series of e1000e resets (sometimes endless) at system boot
+if something generates tx traffic at this time. In my case this is
+netconsole who sends message "e1000e 0000:02:00.0: Some CPU C-states
+have been disabled in order to enable jumbo frames" from e1000e itself.
+As result e1000_watchdog_task sees used tx buffer while carrier is off
+and start this reset cycle again.
+
+[ 17.794359] e1000e: eth1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
+[ 17.794714] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
+[ 22.936455] e1000e 0000:02:00.0 eth1: changing MTU from 1500 to 9000
+[ 23.033336] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
+[ 26.102364] e1000e: eth1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
+[ 27.174495] 8021q: 802.1Q VLAN Support v1.8
+[ 27.174513] 8021q: adding VLAN 0 to HW filter on device eth1
+[ 30.671724] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation
+[ 30.898564] netpoll: netconsole: local port 6666
+[ 30.898566] netpoll: netconsole: local IPv6 address 2a02:6b8:0:80b:beae:c5ff:fe28:23f8
+[ 30.898567] netpoll: netconsole: interface 'eth1'
+[ 30.898568] netpoll: netconsole: remote port 6666
+[ 30.898568] netpoll: netconsole: remote IPv6 address 2a02:6b8:b000:605c:e61d:2dff:fe03:3790
+[ 30.898569] netpoll: netconsole: remote ethernet address b0:a8:6e:f4:ff:c0
+[ 30.917747] console [netcon0] enabled
+[ 30.917749] netconsole: network logging started
+[ 31.453353] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
+[ 34.185730] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
+[ 34.321840] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
+[ 34.465822] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
+[ 34.597423] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
+[ 34.745417] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
+[ 34.877356] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
+[ 35.005441] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
+[ 35.157376] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
+[ 35.289362] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
+[ 35.417441] e1000e 0000:02:00.0: Some CPU C-states have been disabled in order to enable jumbo frames
+[ 37.790342] e1000e: eth1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
+
+This patch flushes tx buffers only once when carrier is off
+rather than at each watchdog iteration.
+
+Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
+Tested-by: Aaron Brown <aaron.f.brown@intel.com>
+Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/ethernet/intel/e1000e/netdev.c | 15 ++++++---------
+ 1 file changed, 6 insertions(+), 9 deletions(-)
+
+diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
+index e3945469b5c8..23edc1364487 100644
+--- a/drivers/net/ethernet/intel/e1000e/netdev.c
++++ b/drivers/net/ethernet/intel/e1000e/netdev.c
+@@ -5286,8 +5286,13 @@ static void e1000_watchdog_task(struct work_struct *work)
+ /* 8000ES2LAN requires a Rx packet buffer work-around
+ * on link down event; reset the controller to flush
+ * the Rx packet buffer.
++ *
++ * If the link is lost the controller stops DMA, but
++ * if there is queued Tx work it cannot be done. So
++ * reset the controller to flush the Tx packet buffers.
+ */
+- if (adapter->flags & FLAG_RX_NEEDS_RESTART)
++ if ((adapter->flags & FLAG_RX_NEEDS_RESTART) ||
++ e1000_desc_unused(tx_ring) + 1 < tx_ring->count)
+ adapter->flags |= FLAG_RESTART_NOW;
+ else
+ pm_schedule_suspend(netdev->dev.parent,
+@@ -5310,14 +5315,6 @@ link_up:
+ adapter->gotc_old = adapter->stats.gotc;
+ spin_unlock(&adapter->stats64_lock);
+
+- /* If the link is lost the controller stops DMA, but
+- * if there is queued Tx work it cannot be done. So
+- * reset the controller to flush the Tx packet buffers.
+- */
+- if (!netif_carrier_ok(netdev) &&
+- (e1000_desc_unused(tx_ring) + 1 < tx_ring->count))
+- adapter->flags |= FLAG_RESTART_NOW;
+-
+ /* If reset is necessary, do it outside of interrupt context. */
+ if (adapter->flags & FLAG_RESTART_NOW) {
+ schedule_work(&adapter->reset_task);
+--
+2.19.1
+
--- /dev/null
+From 92af2e861f9716b589840c9f0eb1da8adf7af6c5 Mon Sep 17 00:00:00 2001
+From: Florian Fainelli <f.fainelli@gmail.com>
+Date: Thu, 21 Feb 2019 20:09:28 -0800
+Subject: e1000e: Fix -Wformat-truncation warnings
+
+[ Upstream commit 135e7245479addc6b1f5d031e3d7e2ddb3d2b109 ]
+
+Provide precision hints to snprintf() since we know the destination
+buffer size of the RX/TX ring names are IFNAMSIZ + 5 - 1. This fixes the
+following warnings:
+
+drivers/net/ethernet/intel/e1000e/netdev.c: In function
+'e1000_request_msix':
+drivers/net/ethernet/intel/e1000e/netdev.c:2109:13: warning: 'snprintf'
+output may be truncated before the last format character
+[-Wformat-truncation=]
+ "%s-rx-0", netdev->name);
+ ^
+drivers/net/ethernet/intel/e1000e/netdev.c:2107:3: note: 'snprintf'
+output between 6 and 21 bytes into a destination of size 20
+ snprintf(adapter->rx_ring->name,
+ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ sizeof(adapter->rx_ring->name) - 1,
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ "%s-rx-0", netdev->name);
+ ~~~~~~~~~~~~~~~~~~~~~~~~
+drivers/net/ethernet/intel/e1000e/netdev.c:2125:13: warning: 'snprintf'
+output may be truncated before the last format character
+[-Wformat-truncation=]
+ "%s-tx-0", netdev->name);
+ ^
+drivers/net/ethernet/intel/e1000e/netdev.c:2123:3: note: 'snprintf'
+output between 6 and 21 bytes into a destination of size 20
+ snprintf(adapter->tx_ring->name,
+ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ sizeof(adapter->tx_ring->name) - 1,
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ "%s-tx-0", netdev->name);
+ ~~~~~~~~~~~~~~~~~~~~~~~~
+
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/ethernet/intel/e1000e/netdev.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
+index 3ba0c90e7055..e3945469b5c8 100644
+--- a/drivers/net/ethernet/intel/e1000e/netdev.c
++++ b/drivers/net/ethernet/intel/e1000e/netdev.c
+@@ -2106,7 +2106,7 @@ static int e1000_request_msix(struct e1000_adapter *adapter)
+ if (strlen(netdev->name) < (IFNAMSIZ - 5))
+ snprintf(adapter->rx_ring->name,
+ sizeof(adapter->rx_ring->name) - 1,
+- "%s-rx-0", netdev->name);
++ "%.14s-rx-0", netdev->name);
+ else
+ memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
+ err = request_irq(adapter->msix_entries[vector].vector,
+@@ -2122,7 +2122,7 @@ static int e1000_request_msix(struct e1000_adapter *adapter)
+ if (strlen(netdev->name) < (IFNAMSIZ - 5))
+ snprintf(adapter->tx_ring->name,
+ sizeof(adapter->tx_ring->name) - 1,
+- "%s-tx-0", netdev->name);
++ "%.14s-tx-0", netdev->name);
+ else
+ memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
+ err = request_irq(adapter->msix_entries[vector].vector,
+--
+2.19.1
+
--- /dev/null
+From 920be3d562e543740252b3b94134c94f941d91cf Mon Sep 17 00:00:00 2001
+From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
+Date: Sat, 2 Feb 2019 10:41:16 +0100
+Subject: efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted
+
+[ Upstream commit 4e46c2a956215482418d7b315749fb1b6c6bc224 ]
+
+The UEFI spec revision 2.7 errata A section 8.4 has the following to
+say about the virtual memory runtime services:
+
+ "This section contains function definitions for the virtual memory
+ support that may be optionally used by an operating system at runtime.
+ If an operating system chooses to make EFI runtime service calls in a
+ virtual addressing mode instead of the flat physical mode, then the
+ operating system must use the services in this section to switch the
+ EFI runtime services from flat physical addressing to virtual
+ addressing."
+
+So it is pretty clear that calling SetVirtualAddressMap() is entirely
+optional, and so there is no point in doing so unless it achieves
+anything useful for us.
+
+This is not the case for 64-bit ARM. The identity mapping used by the
+firmware is arbitrarily converted into another permutation of userland
+addresses (i.e., bits [63:48] cleared), and the runtime code could easily
+deal with the original layout in exactly the same way as it deals with
+the converted layout. However, due to constraints related to page size
+differences if the OS is not running with 4k pages, and related to
+systems that may expose the individual sections of PE/COFF runtime
+modules as different memory regions, creating the virtual layout is a
+bit fiddly, and requires us to sort the memory map and reason about
+adjacent regions with identical memory types etc etc.
+
+So the obvious fix is to stop calling SetVirtualAddressMap() altogether
+on arm64 systems. However, to avoid surprises, which are notoriously
+hard to diagnose when it comes to OS<->firmware interactions, let's
+start by making it an opt-out feature, and implement support for the
+'efi=novamap' kernel command line parameter on ARM and arm64 systems.
+
+( Note that 32-bit ARM generally does require SetVirtualAddressMap() to be
+ used, given that the physical memory map and the kernel virtual address
+ map are not guaranteed to be non-overlapping like on arm64. However,
+ having support for efi=novamap,noruntime on 32-bit ARM, combined with
+ the recently proposed support for earlycon=efifb, is likely to be useful
+ to diagnose boot issues on such systems if they have no accessible serial
+ port. )
+
+Tested-by: Jeffrey Hugo <jhugo@codeaurora.org>
+Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org>
+Tested-by: Lee Jones <lee.jones@linaro.org>
+Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
+Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
+Cc: Alexander Graf <agraf@suse.de>
+Cc: Borislav Petkov <bp@alien8.de>
+Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
+Cc: Leif Lindholm <leif.lindholm@linaro.org>
+Cc: Linus Torvalds <torvalds@linux-foundation.org>
+Cc: Matt Fleming <matt@codeblueprint.co.uk>
+Cc: Peter Jones <pjones@redhat.com>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Cc: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Cc: linux-efi@vger.kernel.org
+Link: http://lkml.kernel.org/r/20190202094119.13230-8-ard.biesheuvel@linaro.org
+Signed-off-by: Ingo Molnar <mingo@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/firmware/efi/libstub/arm-stub.c | 5 +++++
+ drivers/firmware/efi/libstub/efi-stub-helper.c | 10 ++++++++++
+ drivers/firmware/efi/libstub/efistub.h | 1 +
+ drivers/firmware/efi/libstub/fdt.c | 3 +++
+ 4 files changed, 19 insertions(+)
+
+diff --git a/drivers/firmware/efi/libstub/arm-stub.c b/drivers/firmware/efi/libstub/arm-stub.c
+index 6920033de6d4..6c09644d620e 100644
+--- a/drivers/firmware/efi/libstub/arm-stub.c
++++ b/drivers/firmware/efi/libstub/arm-stub.c
+@@ -340,6 +340,11 @@ void efi_get_virtmap(efi_memory_desc_t *memory_map, unsigned long map_size,
+ paddr = in->phys_addr;
+ size = in->num_pages * EFI_PAGE_SIZE;
+
++ if (novamap()) {
++ in->virt_addr = in->phys_addr;
++ continue;
++ }
++
+ /*
+ * Make the mapping compatible with 64k pages: this allows
+ * a 4k page size kernel to kexec a 64k page size kernel and
+diff --git a/drivers/firmware/efi/libstub/efi-stub-helper.c b/drivers/firmware/efi/libstub/efi-stub-helper.c
+index e94975f4655b..442f51c2a53d 100644
+--- a/drivers/firmware/efi/libstub/efi-stub-helper.c
++++ b/drivers/firmware/efi/libstub/efi-stub-helper.c
+@@ -34,6 +34,7 @@ static unsigned long __chunk_size = EFI_READ_CHUNK_SIZE;
+
+ static int __section(.data) __nokaslr;
+ static int __section(.data) __quiet;
++static int __section(.data) __novamap;
+
+ int __pure nokaslr(void)
+ {
+@@ -43,6 +44,10 @@ int __pure is_quiet(void)
+ {
+ return __quiet;
+ }
++int __pure novamap(void)
++{
++ return __novamap;
++}
+
+ #define EFI_MMAP_NR_SLACK_SLOTS 8
+
+@@ -482,6 +487,11 @@ efi_status_t efi_parse_options(char const *cmdline)
+ __chunk_size = -1UL;
+ }
+
++ if (!strncmp(str, "novamap", 7)) {
++ str += strlen("novamap");
++ __novamap = 1;
++ }
++
+ /* Group words together, delimited by "," */
+ while (*str && *str != ' ' && *str != ',')
+ str++;
+diff --git a/drivers/firmware/efi/libstub/efistub.h b/drivers/firmware/efi/libstub/efistub.h
+index 32799cf039ef..337b52c4702c 100644
+--- a/drivers/firmware/efi/libstub/efistub.h
++++ b/drivers/firmware/efi/libstub/efistub.h
+@@ -27,6 +27,7 @@
+
+ extern int __pure nokaslr(void);
+ extern int __pure is_quiet(void);
++extern int __pure novamap(void);
+
+ #define pr_efi(sys_table, msg) do { \
+ if (!is_quiet()) efi_printk(sys_table, "EFI stub: "msg); \
+diff --git a/drivers/firmware/efi/libstub/fdt.c b/drivers/firmware/efi/libstub/fdt.c
+index 0c0d2312f4a8..dba296a44f4e 100644
+--- a/drivers/firmware/efi/libstub/fdt.c
++++ b/drivers/firmware/efi/libstub/fdt.c
+@@ -327,6 +327,9 @@ efi_status_t allocate_new_fdt_and_exit_boot(efi_system_table_t *sys_table,
+ if (status == EFI_SUCCESS) {
+ efi_set_virtual_address_map_t *svam;
+
++ if (novamap())
++ return EFI_SUCCESS;
++
+ /* Install the new virtual address map */
+ svam = sys_table->runtime->set_virtual_address_map;
+ status = svam(runtime_entry_count * desc_size, desc_size,
+--
+2.19.1
+
--- /dev/null
+From 16d1b6562a1b0257df009fffb3a38f7cdc0976f9 Mon Sep 17 00:00:00 2001
+From: Ross Lagerwall <ross.lagerwall@citrix.com>
+Date: Mon, 28 Jan 2019 10:04:24 +0000
+Subject: efi: cper: Fix possible out-of-bounds access
+
+[ Upstream commit 45b14a4ffcc1e0b5caa246638f942cbe7eaea7ad ]
+
+When checking a generic status block, we iterate over all the generic
+data blocks. The loop condition only checks that the start of the
+generic data block is valid (within estatus->data_length) but not the
+whole block. Because the size of data blocks (excluding error data) may
+vary depending on the revision and the revision is contained within the
+data block, ensure that enough of the current data block is valid before
+dereferencing any members otherwise an out-of-bounds access may occur if
+estatus->data_length is invalid.
+
+This relies on the fact that struct acpi_hest_generic_data_v300 is a
+superset of the earlier version. Also rework the other checks to avoid
+potential underflow.
+
+Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
+Acked-by: Borislav Petkov <bp@suse.de>
+Tested-by: Tyler Baicar <baicar.tyler@gmail.com>
+Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/firmware/efi/cper.c | 13 +++++++++----
+ 1 file changed, 9 insertions(+), 4 deletions(-)
+
+diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c
+index a7902fccdcfa..6090d25dce85 100644
+--- a/drivers/firmware/efi/cper.c
++++ b/drivers/firmware/efi/cper.c
+@@ -546,19 +546,24 @@ EXPORT_SYMBOL_GPL(cper_estatus_check_header);
+ int cper_estatus_check(const struct acpi_hest_generic_status *estatus)
+ {
+ struct acpi_hest_generic_data *gdata;
+- unsigned int data_len, gedata_len;
++ unsigned int data_len, record_size;
+ int rc;
+
+ rc = cper_estatus_check_header(estatus);
+ if (rc)
+ return rc;
++
+ data_len = estatus->data_length;
+
+ apei_estatus_for_each_section(estatus, gdata) {
+- gedata_len = acpi_hest_get_error_length(gdata);
+- if (gedata_len > data_len - acpi_hest_get_size(gdata))
++ if (sizeof(struct acpi_hest_generic_data) > data_len)
++ return -EINVAL;
++
++ record_size = acpi_hest_get_record_size(gdata);
++ if (record_size > data_len)
+ return -EINVAL;
+- data_len -= acpi_hest_get_record_size(gdata);
++
++ data_len -= record_size;
+ }
+ if (data_len)
+ return -EINVAL;
+--
+2.19.1
+
--- /dev/null
+From 66a92ecb173c5f1f67d001d17a73a3deb65c5299 Mon Sep 17 00:00:00 2001
+From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
+Date: Sat, 2 Feb 2019 10:41:12 +0100
+Subject: efi/memattr: Don't bail on zero VA if it equals the region's PA
+
+[ Upstream commit 5de0fef0230f3c8d75cff450a71740a7bf2db866 ]
+
+The EFI memory attributes code cross-references the EFI memory map with
+the more granular EFI memory attributes table to ensure that they are in
+sync before applying the strict permissions to the regions it describes.
+
+Since we always install virtual mappings for the EFI runtime regions to
+which these strict permissions apply, we currently perform a sanity check
+on the EFI memory descriptor, and ensure that the EFI_MEMORY_RUNTIME bit
+is set, and that the virtual address has been assigned.
+
+However, in cases where a runtime region exists at physical address 0x0,
+and the virtual mapping equals the physical mapping, e.g., when running
+in mixed mode on x86, we encounter a memory descriptor with the runtime
+attribute and virtual address 0x0, and incorrectly draw the conclusion
+that a runtime region exists for which no virtual mapping was installed,
+and give up altogether. The consequence of this is that firmware mappings
+retain their read-write-execute permissions, making the system more
+vulnerable to attacks.
+
+So let's only bail if the virtual address of 0x0 has been assigned to a
+physical region that does not reside at address 0x0.
+
+Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
+Acked-by: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
+Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
+Cc: Alexander Graf <agraf@suse.de>
+Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
+Cc: Borislav Petkov <bp@alien8.de>
+Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
+Cc: Jeffrey Hugo <jhugo@codeaurora.org>
+Cc: Lee Jones <lee.jones@linaro.org>
+Cc: Leif Lindholm <leif.lindholm@linaro.org>
+Cc: Linus Torvalds <torvalds@linux-foundation.org>
+Cc: Matt Fleming <matt@codeblueprint.co.uk>
+Cc: Peter Jones <pjones@redhat.com>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Cc: linux-efi@vger.kernel.org
+Fixes: 10f0d2f577053 ("efi: Implement generic support for the Memory ...")
+Link: http://lkml.kernel.org/r/20190202094119.13230-4-ard.biesheuvel@linaro.org
+Signed-off-by: Ingo Molnar <mingo@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/firmware/efi/memattr.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/firmware/efi/memattr.c b/drivers/firmware/efi/memattr.c
+index 8986757eafaf..aac972b056d9 100644
+--- a/drivers/firmware/efi/memattr.c
++++ b/drivers/firmware/efi/memattr.c
+@@ -94,7 +94,7 @@ static bool entry_is_valid(const efi_memory_desc_t *in, efi_memory_desc_t *out)
+
+ if (!(md->attribute & EFI_MEMORY_RUNTIME))
+ continue;
+- if (md->virt_addr == 0) {
++ if (md->virt_addr == 0 && md->phys_addr != 0) {
+ /* no virtual mapping has been installed by the stub */
+ break;
+ }
+--
+2.19.1
+
--- /dev/null
+From 1a6d9449ba9bf3010547d85b3a857ac9add136ed Mon Sep 17 00:00:00 2001
+From: Arnd Bergmann <arnd@arndb.de>
+Date: Thu, 7 Mar 2019 16:52:24 +0100
+Subject: enic: fix build warning without CONFIG_CPUMASK_OFFSTACK
+
+[ Upstream commit 43d281662fdb46750d49417559b71069f435298d ]
+
+The enic driver relies on the CONFIG_CPUMASK_OFFSTACK feature to
+dynamically allocate a struct member, but this is normally intended for
+local variables.
+
+Building with clang, I get a warning for a few locations that check the
+address of the cpumask_var_t:
+
+drivers/net/ethernet/cisco/enic/enic_main.c:122:22: error: address of array 'enic->msix[i].affinity_mask' will always evaluate to 'true' [-Werror,-Wpointer-bool-conversion]
+
+As far as I can tell, the code is still correct, as the truth value of
+the pointer is what we need in this configuration. To get rid of
+the warning, use cpumask_available() instead of checking the
+pointer directly.
+
+Fixes: 322cf7e3a4e8 ("enic: assign affinity hint to interrupts")
+Signed-off-by: Arnd Bergmann <arnd@arndb.de>
+Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/ethernet/cisco/enic/enic_main.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c
+index 9a7f70db20c7..733d9172425b 100644
+--- a/drivers/net/ethernet/cisco/enic/enic_main.c
++++ b/drivers/net/ethernet/cisco/enic/enic_main.c
+@@ -119,7 +119,7 @@ static void enic_init_affinity_hint(struct enic *enic)
+
+ for (i = 0; i < enic->intr_count; i++) {
+ if (enic_is_err_intr(enic, i) || enic_is_notify_intr(enic, i) ||
+- (enic->msix[i].affinity_mask &&
++ (cpumask_available(enic->msix[i].affinity_mask) &&
+ !cpumask_empty(enic->msix[i].affinity_mask)))
+ continue;
+ if (zalloc_cpumask_var(&enic->msix[i].affinity_mask,
+@@ -148,7 +148,7 @@ static void enic_set_affinity_hint(struct enic *enic)
+ for (i = 0; i < enic->intr_count; i++) {
+ if (enic_is_err_intr(enic, i) ||
+ enic_is_notify_intr(enic, i) ||
+- !enic->msix[i].affinity_mask ||
++ !cpumask_available(enic->msix[i].affinity_mask) ||
+ cpumask_empty(enic->msix[i].affinity_mask))
+ continue;
+ err = irq_set_affinity_hint(enic->msix_entry[i].vector,
+@@ -161,7 +161,7 @@ static void enic_set_affinity_hint(struct enic *enic)
+ for (i = 0; i < enic->wq_count; i++) {
+ int wq_intr = enic_msix_wq_intr(enic, i);
+
+- if (enic->msix[wq_intr].affinity_mask &&
++ if (cpumask_available(enic->msix[wq_intr].affinity_mask) &&
+ !cpumask_empty(enic->msix[wq_intr].affinity_mask))
+ netif_set_xps_queue(enic->netdev,
+ enic->msix[wq_intr].affinity_mask,
+--
+2.19.1
+
--- /dev/null
+From ae4cfda07e13c6175166efa16edc60b1ea0145c2 Mon Sep 17 00:00:00 2001
+From: Sahitya Tummala <stummala@codeaurora.org>
+Date: Mon, 4 Feb 2019 13:36:53 +0530
+Subject: f2fs: do not use mutex lock in atomic context
+
+[ Upstream commit 9083977dabf3833298ddcd40dee28687f1e6b483 ]
+
+Fix below warning coming because of using mutex lock in atomic context.
+
+BUG: sleeping function called from invalid context at kernel/locking/mutex.c:98
+in_atomic(): 1, irqs_disabled(): 0, pid: 585, name: sh
+Preemption disabled at: __radix_tree_preload+0x28/0x130
+Call trace:
+ dump_backtrace+0x0/0x2b4
+ show_stack+0x20/0x28
+ dump_stack+0xa8/0xe0
+ ___might_sleep+0x144/0x194
+ __might_sleep+0x58/0x8c
+ mutex_lock+0x2c/0x48
+ f2fs_trace_pid+0x88/0x14c
+ f2fs_set_node_page_dirty+0xd0/0x184
+
+Do not use f2fs_radix_tree_insert() to avoid doing cond_resched() with
+spin_lock() acquired.
+
+Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
+Reviewed-by: Chao Yu <yuchao0@huawei.com>
+Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ fs/f2fs/trace.c | 20 +++++++++++++-------
+ 1 file changed, 13 insertions(+), 7 deletions(-)
+
+diff --git a/fs/f2fs/trace.c b/fs/f2fs/trace.c
+index a1fcd00bbb2b..8ac1851a21c0 100644
+--- a/fs/f2fs/trace.c
++++ b/fs/f2fs/trace.c
+@@ -17,7 +17,7 @@
+ #include "trace.h"
+
+ static RADIX_TREE(pids, GFP_ATOMIC);
+-static struct mutex pids_lock;
++static spinlock_t pids_lock;
+ static struct last_io_info last_io;
+
+ static inline void __print_last_io(void)
+@@ -61,23 +61,29 @@ void f2fs_trace_pid(struct page *page)
+
+ set_page_private(page, (unsigned long)pid);
+
++retry:
+ if (radix_tree_preload(GFP_NOFS))
+ return;
+
+- mutex_lock(&pids_lock);
++ spin_lock(&pids_lock);
+ p = radix_tree_lookup(&pids, pid);
+ if (p == current)
+ goto out;
+ if (p)
+ radix_tree_delete(&pids, pid);
+
+- f2fs_radix_tree_insert(&pids, pid, current);
++ if (radix_tree_insert(&pids, pid, current)) {
++ spin_unlock(&pids_lock);
++ radix_tree_preload_end();
++ cond_resched();
++ goto retry;
++ }
+
+ trace_printk("%3x:%3x %4x %-16s\n",
+ MAJOR(inode->i_sb->s_dev), MINOR(inode->i_sb->s_dev),
+ pid, current->comm);
+ out:
+- mutex_unlock(&pids_lock);
++ spin_unlock(&pids_lock);
+ radix_tree_preload_end();
+ }
+
+@@ -122,7 +128,7 @@ void f2fs_trace_ios(struct f2fs_io_info *fio, int flush)
+
+ void f2fs_build_trace_ios(void)
+ {
+- mutex_init(&pids_lock);
++ spin_lock_init(&pids_lock);
+ }
+
+ #define PIDVEC_SIZE 128
+@@ -150,7 +156,7 @@ void f2fs_destroy_trace_ios(void)
+ pid_t next_pid = 0;
+ unsigned int found;
+
+- mutex_lock(&pids_lock);
++ spin_lock(&pids_lock);
+ while ((found = gang_lookup_pids(pid, next_pid, PIDVEC_SIZE))) {
+ unsigned idx;
+
+@@ -158,5 +164,5 @@ void f2fs_destroy_trace_ios(void)
+ for (idx = 0; idx < found; idx++)
+ radix_tree_delete(&pids, pid[idx]);
+ }
+- mutex_unlock(&pids_lock);
++ spin_unlock(&pids_lock);
+ }
+--
+2.19.1
+
--- /dev/null
+From 0d596546dffb95665dd98256ec05eefb91bd2f51 Mon Sep 17 00:00:00 2001
+From: Chao Yu <yuchao0@huawei.com>
+Date: Tue, 5 Mar 2019 19:32:26 +0800
+Subject: f2fs: fix to adapt small inline xattr space in __find_inline_xattr()
+
+[ Upstream commit 2c28aba8b2e2a51749fa66e01b68e1cd5b53e022 ]
+
+With below testcase, we will fail to find existed xattr entry:
+
+1. mkfs.f2fs -O extra_attr -O flexible_inline_xattr /dev/zram0
+2. mount -t f2fs -o inline_xattr_size=1 /dev/zram0 /mnt/f2fs/
+3. touch /mnt/f2fs/file
+4. setfattr -n "user.name" -v 0 /mnt/f2fs/file
+5. getfattr -n "user.name" /mnt/f2fs/file
+
+/mnt/f2fs/file: user.name: No such attribute
+
+The reason is for inode which has very small inline xattr size,
+__find_inline_xattr() will fail to traverse any entry due to first
+entry may not be loaded from xattr node yet, later, we may skip to
+check entire xattr datas in __find_xattr(), result in such wrong
+condition.
+
+This patch adds condition to check such case to avoid this issue.
+
+Signed-off-by: Chao Yu <yuchao0@huawei.com>
+Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ fs/f2fs/xattr.c | 13 ++++++++++---
+ 1 file changed, 10 insertions(+), 3 deletions(-)
+
+diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c
+index 087e53a2d96c..409a637f7a92 100644
+--- a/fs/f2fs/xattr.c
++++ b/fs/f2fs/xattr.c
+@@ -227,11 +227,11 @@ static struct f2fs_xattr_entry *__find_inline_xattr(struct inode *inode,
+ {
+ struct f2fs_xattr_entry *entry;
+ unsigned int inline_size = inline_xattr_size(inode);
++ void *max_addr = base_addr + inline_size;
+
+ list_for_each_xattr(entry, base_addr) {
+- if ((void *)entry + sizeof(__u32) > base_addr + inline_size ||
+- (void *)XATTR_NEXT_ENTRY(entry) + sizeof(__u32) >
+- base_addr + inline_size) {
++ if ((void *)entry + sizeof(__u32) > max_addr ||
++ (void *)XATTR_NEXT_ENTRY(entry) > max_addr) {
+ *last_addr = entry;
+ return NULL;
+ }
+@@ -242,6 +242,13 @@ static struct f2fs_xattr_entry *__find_inline_xattr(struct inode *inode,
+ if (!memcmp(entry->e_name, name, len))
+ break;
+ }
++
++ /* inline xattr header or entry across max inline xattr size */
++ if (IS_XATTR_LAST_ENTRY(entry) &&
++ (void *)entry + sizeof(__u32) > max_addr) {
++ *last_addr = entry;
++ return NULL;
++ }
+ return entry;
+ }
+
+--
+2.19.1
+
--- /dev/null
+From 296ce76228e6dae792fddad8938ee253bc574620 Mon Sep 17 00:00:00 2001
+From: Chao Yu <yuchao0@huawei.com>
+Date: Tue, 12 Mar 2019 15:44:27 +0800
+Subject: f2fs: fix to avoid deadlock in f2fs_read_inline_dir()
+
+[ Upstream commit aadcef64b22f668c1a107b86d3521d9cac915c24 ]
+
+As Jiqun Li reported in bugzilla:
+
+https://bugzilla.kernel.org/show_bug.cgi?id=202883
+
+sometimes, dead lock when make system call SYS_getdents64 with fsync() is
+called by another process.
+
+monkey running on android9.0
+
+1. task 9785 held sbi->cp_rwsem and waiting lock_page()
+2. task 10349 held mm_sem and waiting sbi->cp_rwsem
+3. task 9709 held lock_page() and waiting mm_sem
+
+so this is a dead lock scenario.
+
+task stack is show by crash tools as following
+
+crash_arm64> bt ffffffc03c354080
+PID: 9785 TASK: ffffffc03c354080 CPU: 1 COMMAND: "RxIoScheduler-3"
+>> #7 [ffffffc01b50fac0] __lock_page at ffffff80081b11e8
+
+crash-arm64> bt 10349
+PID: 10349 TASK: ffffffc018b83080 CPU: 1 COMMAND: "BUGLY_ASYNC_UPL"
+>> #3 [ffffffc01f8cfa40] rwsem_down_read_failed at ffffff8008a93afc
+ PC: 00000033 LR: 00000000 SP: 00000000 PSTATE: ffffffffffffffff
+
+crash-arm64> bt 9709
+PID: 9709 TASK: ffffffc03e7f3080 CPU: 1 COMMAND: "IntentService[A"
+>> #3 [ffffffc001e67850] rwsem_down_read_failed at ffffff8008a93afc
+>> #8 [ffffffc001e67b80] el1_ia at ffffff8008084fc4
+ PC: ffffff8008274114 [compat_filldir64+120]
+ LR: ffffff80083584d4 [f2fs_fill_dentries+448]
+ SP: ffffffc001e67b80 PSTATE: 80400145
+ X29: ffffffc001e67b80 X28: 0000000000000000 X27: 000000000000001a
+ X26: 00000000000093d7 X25: ffffffc070d52480 X24: 0000000000000008
+ X23: 0000000000000028 X22: 00000000d43dfd60 X21: ffffffc001e67e90
+ X20: 0000000000000011 X19: ffffff80093a4000 X18: 0000000000000000
+ X17: 0000000000000000 X16: 0000000000000000 X15: 0000000000000000
+ X14: ffffffffffffffff X13: 0000000000000008 X12: 0101010101010101
+ X11: 7f7f7f7f7f7f7f7f X10: 6a6a6a6a6a6a6a6a X9: 7f7f7f7f7f7f7f7f
+ X8: 0000000080808000 X7: ffffff800827409c X6: 0000000080808000
+ X5: 0000000000000008 X4: 00000000000093d7 X3: 000000000000001a
+ X2: 0000000000000011 X1: ffffffc070d52480 X0: 0000000000800238
+>> #9 [ffffffc001e67be0] f2fs_fill_dentries at ffffff80083584d0
+ PC: 0000003c LR: 00000000 SP: 00000000 PSTATE: 000000d9
+ X12: f48a02ff X11: d4678960 X10: d43dfc00 X9: d4678ae4
+ X8: 00000058 X7: d4678994 X6: d43de800 X5: 000000d9
+ X4: d43dfc0c X3: d43dfc10 X2: d46799c8 X1: 00000000
+ X0: 00001068
+
+Below potential deadlock will happen between three threads:
+Thread A Thread B Thread C
+- f2fs_do_sync_file
+ - f2fs_write_checkpoint
+ - down_write(&sbi->node_change) -- 1)
+ - do_page_fault
+ - down_write(&mm->mmap_sem) -- 2)
+ - do_wp_page
+ - f2fs_vm_page_mkwrite
+ - getdents64
+ - f2fs_read_inline_dir
+ - lock_page -- 3)
+ - f2fs_sync_node_pages
+ - lock_page -- 3)
+ - __do_map_lock
+ - down_read(&sbi->node_change) -- 1)
+ - f2fs_fill_dentries
+ - dir_emit
+ - compat_filldir64
+ - do_page_fault
+ - down_read(&mm->mmap_sem) -- 2)
+
+Since f2fs_readdir is protected by inode.i_rwsem, there should not be
+any updates in inode page, we're safe to lookup dents in inode page
+without its lock held, so taking off the lock to improve concurrency
+of readdir and avoid potential deadlock.
+
+Reported-by: Jiqun Li <jiqun.li@unisoc.com>
+Signed-off-by: Chao Yu <yuchao0@huawei.com>
+Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ fs/f2fs/inline.c | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
+index 115dc219344b..92703efde36e 100644
+--- a/fs/f2fs/inline.c
++++ b/fs/f2fs/inline.c
+@@ -661,6 +661,12 @@ int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
+ if (IS_ERR(ipage))
+ return PTR_ERR(ipage);
+
++ /*
++ * f2fs_readdir was protected by inode.i_rwsem, it is safe to access
++ * ipage without page's lock held.
++ */
++ unlock_page(ipage);
++
+ inline_dentry = inline_data_addr(inode, ipage);
+
+ make_dentry_ptr_inline(inode, &d, inline_dentry);
+@@ -669,7 +675,7 @@ int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
+ if (!err)
+ ctx->pos = d.max;
+
+- f2fs_put_page(ipage, 1);
++ f2fs_put_page(ipage, 0);
+ return err < 0 ? err : 0;
+ }
+
+--
+2.19.1
+
--- /dev/null
+From 1d8304a4033d61deef3743d7b033e8eebf1d359f Mon Sep 17 00:00:00 2001
+From: Chao Yu <yuchao0@huawei.com>
+Date: Fri, 15 Feb 2019 00:08:25 +0800
+Subject: f2fs: fix to check inline_xattr_size boundary correctly
+
+[ Upstream commit 500e0b28ecd3c5aade98f3c3a339d18dcb166bb6 ]
+
+We use below condition to check inline_xattr_size boundary:
+
+ if (!F2FS_OPTION(sbi).inline_xattr_size ||
+ F2FS_OPTION(sbi).inline_xattr_size >=
+ DEF_ADDRS_PER_INODE -
+ F2FS_TOTAL_EXTRA_ATTR_SIZE -
+ DEF_INLINE_RESERVED_SIZE -
+ DEF_MIN_INLINE_SIZE)
+
+There is there problems in that check:
+- we should allow inline_xattr_size equaling to min size of inline
+{data,dentry} area.
+- F2FS_TOTAL_EXTRA_ATTR_SIZE and inline_xattr_size are based on
+different size unit, previous one is 4 bytes, latter one is 1 bytes.
+- DEF_MIN_INLINE_SIZE only indicate min size of inline data area,
+however, we need to consider min size of inline dentry area as well,
+minimal inline dentry should at least contain two entries: '.' and
+'..', so that min inline_dentry size is 40 bytes.
+
+.bitmap 1 * 1 = 1
+.reserved 1 * 1 = 1
+.dentry 11 * 2 = 22
+.filename 8 * 2 = 16
+total 40
+
+Signed-off-by: Chao Yu <yuchao0@huawei.com>
+Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ fs/f2fs/f2fs.h | 1 -
+ fs/f2fs/super.c | 13 +++++++------
+ include/linux/f2fs_fs.h | 13 +++++++------
+ 3 files changed, 14 insertions(+), 13 deletions(-)
+
+diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
+index 42aef5c94927..a3ba20e5946f 100644
+--- a/fs/f2fs/f2fs.h
++++ b/fs/f2fs/f2fs.h
+@@ -450,7 +450,6 @@ struct f2fs_flush_device {
+
+ /* for inline stuff */
+ #define DEF_INLINE_RESERVED_SIZE 1
+-#define DEF_MIN_INLINE_SIZE 1
+ static inline int get_extra_isize(struct inode *inode);
+ static inline int get_inline_xattr_addrs(struct inode *inode);
+ #define MAX_INLINE_DATA(inode) (sizeof(__le32) * \
+diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
+index c9639ef0e8d5..79370b7fa9d2 100644
+--- a/fs/f2fs/super.c
++++ b/fs/f2fs/super.c
+@@ -822,12 +822,13 @@ static int parse_options(struct super_block *sb, char *options)
+ "set with inline_xattr option");
+ return -EINVAL;
+ }
+- if (!F2FS_OPTION(sbi).inline_xattr_size ||
+- F2FS_OPTION(sbi).inline_xattr_size >=
+- DEF_ADDRS_PER_INODE -
+- F2FS_TOTAL_EXTRA_ATTR_SIZE -
+- DEF_INLINE_RESERVED_SIZE -
+- DEF_MIN_INLINE_SIZE) {
++ if (F2FS_OPTION(sbi).inline_xattr_size <
++ sizeof(struct f2fs_xattr_header) / sizeof(__le32) ||
++ F2FS_OPTION(sbi).inline_xattr_size >
++ DEF_ADDRS_PER_INODE -
++ F2FS_TOTAL_EXTRA_ATTR_SIZE / sizeof(__le32) -
++ DEF_INLINE_RESERVED_SIZE -
++ MIN_INLINE_DENTRY_SIZE / sizeof(__le32)) {
+ f2fs_msg(sb, KERN_ERR,
+ "inline xattr size is out of range");
+ return -EINVAL;
+diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
+index f70f8ac9c4f4..40fec5f94949 100644
+--- a/include/linux/f2fs_fs.h
++++ b/include/linux/f2fs_fs.h
+@@ -489,12 +489,12 @@ typedef __le32 f2fs_hash_t;
+
+ /*
+ * space utilization of regular dentry and inline dentry (w/o extra reservation)
+- * regular dentry inline dentry
+- * bitmap 1 * 27 = 27 1 * 23 = 23
+- * reserved 1 * 3 = 3 1 * 7 = 7
+- * dentry 11 * 214 = 2354 11 * 182 = 2002
+- * filename 8 * 214 = 1712 8 * 182 = 1456
+- * total 4096 3488
++ * regular dentry inline dentry (def) inline dentry (min)
++ * bitmap 1 * 27 = 27 1 * 23 = 23 1 * 1 = 1
++ * reserved 1 * 3 = 3 1 * 7 = 7 1 * 1 = 1
++ * dentry 11 * 214 = 2354 11 * 182 = 2002 11 * 2 = 22
++ * filename 8 * 214 = 1712 8 * 182 = 1456 8 * 2 = 16
++ * total 4096 3488 40
+ *
+ * Note: there are more reserved space in inline dentry than in regular
+ * dentry, when converting inline dentry we should handle this carefully.
+@@ -506,6 +506,7 @@ typedef __le32 f2fs_hash_t;
+ #define SIZE_OF_RESERVED (PAGE_SIZE - ((SIZE_OF_DIR_ENTRY + \
+ F2FS_SLOT_LEN) * \
+ NR_DENTRY_IN_BLOCK + SIZE_OF_DENTRY_BITMAP))
++#define MIN_INLINE_DENTRY_SIZE 40 /* just include '.' and '..' entries */
+
+ /* One directory entry slot representing F2FS_SLOT_LEN-sized file name */
+ struct f2fs_dir_entry {
+--
+2.19.1
+
--- /dev/null
+From 825358baf0243b62f80c2f94e422f224a9f3400a Mon Sep 17 00:00:00 2001
+From: Sheng Yong <shengyong1@huawei.com>
+Date: Tue, 15 Jan 2019 20:02:15 +0000
+Subject: f2fs: UBSAN: set boolean value iostat_enable correctly
+
+[ Upstream commit ac92985864e187a1735502f6a02f54eaa655b2aa ]
+
+When setting /sys/fs/f2fs/<DEV>/iostat_enable with non-bool value, UBSAN
+reports the following warning.
+
+[ 7562.295484] ================================================================================
+[ 7562.296531] UBSAN: Undefined behaviour in fs/f2fs/f2fs.h:2776:10
+[ 7562.297651] load of value 64 is not a valid value for type '_Bool'
+[ 7562.298642] CPU: 1 PID: 7487 Comm: dd Not tainted 4.20.0-rc4+ #79
+[ 7562.298653] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
+[ 7562.298662] Call Trace:
+[ 7562.298760] dump_stack+0x46/0x5b
+[ 7562.298811] ubsan_epilogue+0x9/0x40
+[ 7562.298830] __ubsan_handle_load_invalid_value+0x72/0x90
+[ 7562.298863] f2fs_file_write_iter+0x29f/0x3f0
+[ 7562.298905] __vfs_write+0x115/0x160
+[ 7562.298922] vfs_write+0xa7/0x190
+[ 7562.298934] ksys_write+0x50/0xc0
+[ 7562.298973] do_syscall_64+0x4a/0xe0
+[ 7562.298992] entry_SYSCALL_64_after_hwframe+0x44/0xa9
+[ 7562.299001] RIP: 0033:0x7fa45ec19c00
+[ 7562.299004] Code: 73 01 c3 48 8b 0d 88 92 2c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d dd eb 2c 00 00 75 10 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ce 8f 01 00 48 89 04 24
+[ 7562.299044] RSP: 002b:00007ffca52b49e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
+[ 7562.299052] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa45ec19c00
+[ 7562.299059] RDX: 0000000000000400 RSI: 000000000093f000 RDI: 0000000000000001
+[ 7562.299065] RBP: 000000000093f000 R08: 0000000000000004 R09: 0000000000000000
+[ 7562.299071] R10: 00007ffca52b47b0 R11: 0000000000000246 R12: 0000000000000400
+[ 7562.299077] R13: 000000000093f000 R14: 000000000093f400 R15: 0000000000000000
+[ 7562.299091] ================================================================================
+
+So, if iostat_enable is enabled, set its value as true.
+
+Signed-off-by: Sheng Yong <shengyong1@huawei.com>
+Reviewed-by: Chao Yu <yuchao0@huawei.com>
+Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ fs/f2fs/sysfs.c | 12 +++++++++---
+ 1 file changed, 9 insertions(+), 3 deletions(-)
+
+diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
+index 81c0e5337443..98887187af4c 100644
+--- a/fs/f2fs/sysfs.c
++++ b/fs/f2fs/sysfs.c
+@@ -273,10 +273,16 @@ out:
+ return count;
+ }
+
+- *ui = t;
+
+- if (!strcmp(a->attr.name, "iostat_enable") && *ui == 0)
+- f2fs_reset_iostat(sbi);
++ if (!strcmp(a->attr.name, "iostat_enable")) {
++ sbi->iostat_enable = !!t;
++ if (!sbi->iostat_enable)
++ f2fs_reset_iostat(sbi);
++ return count;
++ }
++
++ *ui = (unsigned int)t;
++
+ return count;
+ }
+
+--
+2.19.1
+
--- /dev/null
+From 2d670b8ddd4fe8c4ded729e09c8b63dfeb6a947d Mon Sep 17 00:00:00 2001
+From: Manfred Schlaegl <manfred.schlaegl@ginzinger.com>
+Date: Fri, 8 Feb 2019 19:24:47 +0100
+Subject: fbdev: fbmem: fix memory access if logo is bigger than the screen
+
+[ Upstream commit a5399db139cb3ad9b8502d8b1bd02da9ce0b9df0 ]
+
+There is no clipping on the x or y axis for logos larger that the framebuffer
+size. Therefore: a logo bigger than screen size leads to invalid memory access:
+
+[ 1.254664] Backtrace:
+[ 1.254728] [<c02714e0>] (cfb_imageblit) from [<c026184c>] (fb_show_logo+0x620/0x684)
+[ 1.254763] r10:00000003 r9:00027fd8 r8:c6a40000 r7:c6a36e50 r6:00000000 r5:c06b81e4
+[ 1.254774] r4:c6a3e800
+[ 1.254810] [<c026122c>] (fb_show_logo) from [<c026c1e4>] (fbcon_switch+0x3fc/0x46c)
+[ 1.254842] r10:c6a3e824 r9:c6a3e800 r8:00000000 r7:c6a0c000 r6:c070b014 r5:c6a3e800
+[ 1.254852] r4:c6808c00
+[ 1.254889] [<c026bde8>] (fbcon_switch) from [<c029c8f8>] (redraw_screen+0xf0/0x1e8)
+[ 1.254918] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:c070d5a0 r5:00000080
+[ 1.254928] r4:c6808c00
+[ 1.254961] [<c029c808>] (redraw_screen) from [<c029d264>] (do_bind_con_driver+0x194/0x2e4)
+[ 1.254991] r9:00000000 r8:00000000 r7:00000014 r6:c070d5a0 r5:c070d5a0 r4:c070d5a0
+
+So prevent displaying a logo bigger than screen size and avoid invalid
+memory access.
+
+Signed-off-by: Manfred Schlaegl <manfred.schlaegl@ginzinger.com>
+Signed-off-by: Martin Kepplinger <martin.kepplinger@ginzinger.com>
+Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
+Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/video/fbdev/core/fbmem.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c
+index 77cee99fc36c..c48f083d522a 100644
+--- a/drivers/video/fbdev/core/fbmem.c
++++ b/drivers/video/fbdev/core/fbmem.c
+@@ -427,6 +427,9 @@ static void fb_do_show_logo(struct fb_info *info, struct fb_image *image,
+ {
+ unsigned int x;
+
++ if (image->width > info->var.xres || image->height > info->var.yres)
++ return;
++
+ if (rotate == FB_ROTATE_UR) {
+ for (x = 0;
+ x < num && image->dx + image->width <= info->var.xres;
+--
+2.19.1
+
--- /dev/null
+From e807d131939378fb4235a78b11c3cb8b7523728f Mon Sep 17 00:00:00 2001
+From: Shuriyc Chu <sureeju@gmail.com>
+Date: Tue, 5 Mar 2019 15:41:56 -0800
+Subject: fs/file.c: initialize init_files.resize_wait
+
+[ Upstream commit 5704a06810682683355624923547b41540e2801a ]
+
+(Taken from https://bugzilla.kernel.org/show_bug.cgi?id=200647)
+
+'get_unused_fd_flags' in kthread cause kernel crash. It works fine on
+4.1, but causes crash after get 64 fds. It also cause crash on
+ubuntu1404/1604/1804, centos7.5, and the crash messages are almost the
+same.
+
+The crash message on centos7.5 shows below:
+
+ start fd 61
+ start fd 62
+ start fd 63
+ BUG: unable to handle kernel NULL pointer dereference at (null)
+ IP: __wake_up_common+0x2e/0x90
+ PGD 0
+ Oops: 0000 [#1] SMP
+ Modules linked in: test(OE) xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 tun bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter devlink sunrpc kvm_intel kvm irqbypass crc32_pclmul ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd sg ppdev pcspkr virtio_balloon parport_pc parport i2c_piix4 joydev ip_tables xfs libcrc32c sr_mod cdrom sd_mod crc_t10dif crct10dif_generic ata_generic pata_acpi virtio_scsi virtio_console virtio_net cirrus drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm crct10dif_pclmul crct10dif_common crc32c_intel drm ata_piix serio_raw libata virtio_pci virtio_ring i2c_core
+ virtio floppy dm_mirror dm_region_hash dm_log dm_mod
+ CPU: 2 PID: 1820 Comm: test_fd Kdump: loaded Tainted: G OE ------------ 3.10.0-862.3.3.el7.x86_64 #1
+ Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.10.2-0-g5f4c7b1-prebuilt.qemu-project.org 04/01/2014
+ task: ffff8e92b9431fa0 ti: ffff8e94247a0000 task.ti: ffff8e94247a0000
+ RIP: 0010:__wake_up_common+0x2e/0x90
+ RSP: 0018:ffff8e94247a2d18 EFLAGS: 00010086
+ RAX: 0000000000000000 RBX: ffffffff9d09daa0 RCX: 0000000000000000
+ RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffffffff9d09daa0
+ RBP: ffff8e94247a2d50 R08: 0000000000000000 R09: ffff8e92b95dfda8
+ R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff9d09daa8
+ R13: 0000000000000003 R14: 0000000000000000 R15: 0000000000000003
+ FS: 0000000000000000(0000) GS:ffff8e9434e80000(0000) knlGS:0000000000000000
+ CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
+ CR2: 0000000000000000 CR3: 000000017c686000 CR4: 00000000000207e0
+ Call Trace:
+ __wake_up+0x39/0x50
+ expand_files+0x131/0x250
+ __alloc_fd+0x47/0x170
+ get_unused_fd_flags+0x30/0x40
+ test_fd+0x12a/0x1c0 [test]
+ kthread+0xd1/0xe0
+ ret_from_fork_nospec_begin+0x21/0x21
+ Code: 66 90 55 48 89 e5 41 57 41 89 f7 41 56 41 89 ce 41 55 41 54 49 89 fc 49 83 c4 08 53 48 83 ec 10 48 8b 47 08 89 55 cc 4c 89 45 d0 <48> 8b 08 49 39 c4 48 8d 78 e8 4c 8d 69 e8 75 08 eb 3b 4c 89 ef
+ RIP __wake_up_common+0x2e/0x90
+ RSP <ffff8e94247a2d18>
+ CR2: 0000000000000000
+
+This issue exists since CentOS 7.5 3.10.0-862 and CentOS 7.4
+(3.10.0-693.21.1 ) is ok. Root cause: the item 'resize_wait' is not
+initialized before being used.
+
+Reported-by: Richard Zhang <zhang.zijian@h3c.com>
+Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
+Cc: Al Viro <viro@zeniv.linux.org.uk>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ fs/file.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/fs/file.c b/fs/file.c
+index 7ffd6e9d103d..780d29e58847 100644
+--- a/fs/file.c
++++ b/fs/file.c
+@@ -457,6 +457,7 @@ struct files_struct init_files = {
+ .full_fds_bits = init_files.full_fds_bits_init,
+ },
+ .file_lock = __SPIN_LOCK_UNLOCKED(init_files.file_lock),
++ .resize_wait = __WAIT_QUEUE_HEAD_INITIALIZER(init_files.resize_wait),
+ };
+
+ static unsigned int find_next_fd(struct fdtable *fdt, unsigned int start)
+--
+2.19.1
+
--- /dev/null
+From c5a82a95fb919c4c32009bb32bff3abcb9534d0e Mon Sep 17 00:00:00 2001
+From: Carlos Maiolino <cmaiolino@redhat.com>
+Date: Tue, 26 Feb 2019 11:51:50 +0100
+Subject: fs: fix guard_bio_eod to check for real EOD errors
+
+[ Upstream commit dce30ca9e3b676fb288c33c1f4725a0621361185 ]
+
+guard_bio_eod() can truncate a segment in bio to allow it to do IO on
+odd last sectors of a device.
+
+It already checks if the IO starts past EOD, but it does not consider
+the possibility of an IO request starting within device boundaries can
+contain more than one segment past EOD.
+
+In such cases, truncated_bytes can be bigger than PAGE_SIZE, and will
+underflow bvec->bv_len.
+
+Fix this by checking if truncated_bytes is lower than PAGE_SIZE.
+
+This situation has been found on filesystems such as isofs and vfat,
+which doesn't check the device size before mount, if the device is
+smaller than the filesystem itself, a readahead on such filesystem,
+which spans EOD, can trigger this situation, leading a call to
+zero_user() with a wrong size possibly corrupting memory.
+
+I didn't see any crash, or didn't let the system run long enough to
+check if memory corruption will be hit somewhere, but adding
+instrumentation to guard_bio_end() to check truncated_bytes size, was
+enough to see the error.
+
+The following script can trigger the error.
+
+MNT=/mnt
+IMG=./DISK.img
+DEV=/dev/loop0
+
+mkfs.vfat $IMG
+mount $IMG $MNT
+cp -R /etc $MNT &> /dev/null
+umount $MNT
+
+losetup -D
+
+losetup --find --show --sizelimit 16247280 $IMG
+mount $DEV $MNT
+
+find $MNT -type f -exec cat {} + >/dev/null
+
+Kudos to Eric Sandeen for coming up with the reproducer above
+
+Reviewed-by: Ming Lei <ming.lei@redhat.com>
+Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
+Signed-off-by: Jens Axboe <axboe@kernel.dk>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ fs/buffer.c | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/fs/buffer.c b/fs/buffer.c
+index c083c4b3c1e7..a550e0d8e965 100644
+--- a/fs/buffer.c
++++ b/fs/buffer.c
+@@ -3027,6 +3027,13 @@ void guard_bio_eod(int op, struct bio *bio)
+ /* Uhhuh. We've got a bio that straddles the device size! */
+ truncated_bytes = bio->bi_iter.bi_size - (maxsector << 9);
+
++ /*
++ * The bio contains more than one segment which spans EOD, just return
++ * and let IO layer turn it into an EIO
++ */
++ if (truncated_bytes > bvec->bv_len)
++ return;
++
+ /* Truncate the bio.. */
+ bio->bi_iter.bi_size -= truncated_bytes;
+ bvec->bv_len -= truncated_bytes;
+--
+2.19.1
+
--- /dev/null
+From 7980a6911ac8cd6326450a8dee56b5bb12fa7aee Mon Sep 17 00:00:00 2001
+From: Slavomir Kaslev <kaslevs@vmware.com>
+Date: Thu, 7 Feb 2019 17:45:19 +0200
+Subject: fs: Make splice() and tee() take into account O_NONBLOCK flag on
+ pipes
+
+[ Upstream commit ee5e001196d1345b8fee25925ff5f1d67936081e ]
+
+The current implementation of splice() and tee() ignores O_NONBLOCK set
+on pipe file descriptors and checks only the SPLICE_F_NONBLOCK flag for
+blocking on pipe arguments. This is inconsistent since splice()-ing
+from/to non-pipe file descriptors does take O_NONBLOCK into
+consideration.
+
+Fix this by promoting O_NONBLOCK, when set on a pipe, to
+SPLICE_F_NONBLOCK.
+
+Some context for how the current implementation of splice() leads to
+inconsistent behavior. In the ongoing work[1] to add VM tracing
+capability to trace-cmd we stream tracing data over named FIFOs or
+vsockets from guests back to the host.
+
+When we receive SIGINT from user to stop tracing, we set O_NONBLOCK on
+the input file descriptor and set SPLICE_F_NONBLOCK for the next call to
+splice(). If splice() was blocked waiting on data from the input FIFO,
+after SIGINT splice() restarts with the same arguments (no
+SPLICE_F_NONBLOCK) and blocks again instead of returning -EAGAIN when no
+data is available.
+
+This differs from the splice() behavior when reading from a vsocket or
+when we're doing a traditional read()/write() loop (trace-cmd's
+--nosplice argument).
+
+With this patch applied we get the same behavior in all situations after
+setting O_NONBLOCK which also matches the behavior of doing a
+read()/write() loop instead of splice().
+
+This change does have potential of breaking users who don't expect
+EAGAIN from splice() when SPLICE_F_NONBLOCK is not set. OTOH programs
+that set O_NONBLOCK and don't anticipate EAGAIN are arguably buggy[2].
+
+ [1] https://github.com/skaslev/trace-cmd/tree/vsock
+ [2] https://github.com/torvalds/linux/blob/d47e3da1759230e394096fd742aad423c291ba48/fs/read_write.c#L1425
+
+Signed-off-by: Slavomir Kaslev <kaslevs@vmware.com>
+Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ fs/splice.c | 12 ++++++++++++
+ 1 file changed, 12 insertions(+)
+
+diff --git a/fs/splice.c b/fs/splice.c
+index 29e92b506394..7769181aa1a6 100644
+--- a/fs/splice.c
++++ b/fs/splice.c
+@@ -1119,6 +1119,9 @@ static long do_splice(struct file *in, loff_t __user *off_in,
+ if (ipipe == opipe)
+ return -EINVAL;
+
++ if ((in->f_flags | out->f_flags) & O_NONBLOCK)
++ flags |= SPLICE_F_NONBLOCK;
++
+ return splice_pipe_to_pipe(ipipe, opipe, len, flags);
+ }
+
+@@ -1144,6 +1147,9 @@ static long do_splice(struct file *in, loff_t __user *off_in,
+ if (unlikely(ret < 0))
+ return ret;
+
++ if (in->f_flags & O_NONBLOCK)
++ flags |= SPLICE_F_NONBLOCK;
++
+ file_start_write(out);
+ ret = do_splice_from(ipipe, out, &offset, len, flags);
+ file_end_write(out);
+@@ -1168,6 +1174,9 @@ static long do_splice(struct file *in, loff_t __user *off_in,
+ offset = in->f_pos;
+ }
+
++ if (out->f_flags & O_NONBLOCK)
++ flags |= SPLICE_F_NONBLOCK;
++
+ pipe_lock(opipe);
+ ret = wait_for_space(opipe, flags);
+ if (!ret)
+@@ -1717,6 +1726,9 @@ static long do_tee(struct file *in, struct file *out, size_t len,
+ * copying the data.
+ */
+ if (ipipe && opipe && ipipe != opipe) {
++ if ((in->f_flags | out->f_flags) & O_NONBLOCK)
++ flags |= SPLICE_F_NONBLOCK;
++
+ /*
+ * Keep going, unless we encounter an error. The ipipe/opipe
+ * ordering doesn't really matter.
+--
+2.19.1
+
--- /dev/null
+From a07167b5aa2226adf4d633069c055b9197f914fa Mon Sep 17 00:00:00 2001
+From: Thomas Gleixner <tglx@linutronix.de>
+Date: Fri, 8 Feb 2019 14:48:03 +0100
+Subject: genirq: Avoid summation loops for /proc/stat
+
+[ Upstream commit 1136b0728969901a091f0471968b2b76ed14d9ad ]
+
+Waiman reported that on large systems with a large amount of interrupts the
+readout of /proc/stat takes a long time to sum up the interrupt
+statistics. In principle this is not a problem. but for unknown reasons
+some enterprise quality software reads /proc/stat with a high frequency.
+
+The reason for this is that interrupt statistics are accounted per cpu. So
+the /proc/stat logic has to sum up the interrupt stats for each interrupt.
+
+This can be largely avoided for interrupts which are not marked as
+'PER_CPU' interrupts by simply adding a per interrupt summation counter
+which is incremented along with the per interrupt per cpu counter.
+
+The PER_CPU interrupts need to avoid that and use only per cpu accounting
+because they share the interrupt number and the interrupt descriptor and
+concurrent updates would conflict or require unwanted synchronization.
+
+Reported-by: Waiman Long <longman@redhat.com>
+Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
+Reviewed-by: Waiman Long <longman@redhat.com>
+Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
+Reviewed-by: Davidlohr Bueso <dbueso@suse.de>
+Cc: Matthew Wilcox <willy@infradead.org>
+Cc: Andrew Morton <akpm@linux-foundation.org>
+Cc: Alexey Dobriyan <adobriyan@gmail.com>
+Cc: Kees Cook <keescook@chromium.org>
+Cc: linux-fsdevel@vger.kernel.org
+Cc: Davidlohr Bueso <dave@stgolabs.net>
+Cc: Miklos Szeredi <miklos@szeredi.hu>
+Cc: Daniel Colascione <dancol@google.com>
+Cc: Dave Chinner <david@fromorbit.com>
+Cc: Randy Dunlap <rdunlap@infradead.org>
+Link: https://lkml.kernel.org/r/20190208135020.925487496@linutronix.de
+
+8<-------------
+
+v2: Undo the unintentional layout change of struct irq_desc.
+
+ include/linux/irqdesc.h | 1 +
+ kernel/irq/chip.c | 12 ++++++++++--
+ kernel/irq/internals.h | 8 +++++++-
+ kernel/irq/irqdesc.c | 7 ++++++-
+ 4 files changed, 24 insertions(+), 4 deletions(-)
+
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ include/linux/irqdesc.h | 1 +
+ kernel/irq/chip.c | 12 ++++++++++--
+ kernel/irq/internals.h | 8 +++++++-
+ kernel/irq/irqdesc.c | 7 ++++++-
+ 4 files changed, 24 insertions(+), 4 deletions(-)
+
+diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
+index dd1e40ddac7d..875c41b23f20 100644
+--- a/include/linux/irqdesc.h
++++ b/include/linux/irqdesc.h
+@@ -65,6 +65,7 @@ struct irq_desc {
+ unsigned int core_internal_state__do_not_mess_with_it;
+ unsigned int depth; /* nested irq disables */
+ unsigned int wake_depth; /* nested wake enables */
++ unsigned int tot_count;
+ unsigned int irq_count; /* For detecting broken IRQs */
+ unsigned long last_unhandled; /* Aging timer for unhandled count */
+ unsigned int irqs_unhandled;
+diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
+index a2b3d9de999c..811009ebacd4 100644
+--- a/kernel/irq/chip.c
++++ b/kernel/irq/chip.c
+@@ -855,7 +855,11 @@ void handle_percpu_irq(struct irq_desc *desc)
+ {
+ struct irq_chip *chip = irq_desc_get_chip(desc);
+
+- kstat_incr_irqs_this_cpu(desc);
++ /*
++ * PER CPU interrupts are not serialized. Do not touch
++ * desc->tot_count.
++ */
++ __kstat_incr_irqs_this_cpu(desc);
+
+ if (chip->irq_ack)
+ chip->irq_ack(&desc->irq_data);
+@@ -884,7 +888,11 @@ void handle_percpu_devid_irq(struct irq_desc *desc)
+ unsigned int irq = irq_desc_get_irq(desc);
+ irqreturn_t res;
+
+- kstat_incr_irqs_this_cpu(desc);
++ /*
++ * PER CPU interrupts are not serialized. Do not touch
++ * desc->tot_count.
++ */
++ __kstat_incr_irqs_this_cpu(desc);
+
+ if (chip->irq_ack)
+ chip->irq_ack(&desc->irq_data);
+diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h
+index ca6afa267070..e74e7eea76cf 100644
+--- a/kernel/irq/internals.h
++++ b/kernel/irq/internals.h
+@@ -242,12 +242,18 @@ static inline void irq_state_set_masked(struct irq_desc *desc)
+
+ #undef __irqd_to_state
+
+-static inline void kstat_incr_irqs_this_cpu(struct irq_desc *desc)
++static inline void __kstat_incr_irqs_this_cpu(struct irq_desc *desc)
+ {
+ __this_cpu_inc(*desc->kstat_irqs);
+ __this_cpu_inc(kstat.irqs_sum);
+ }
+
++static inline void kstat_incr_irqs_this_cpu(struct irq_desc *desc)
++{
++ __kstat_incr_irqs_this_cpu(desc);
++ desc->tot_count++;
++}
++
+ static inline int irq_desc_get_node(struct irq_desc *desc)
+ {
+ return irq_common_data_get_node(&desc->irq_common_data);
+diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
+index 578d0e5f1b5b..ba454cba4069 100644
+--- a/kernel/irq/irqdesc.c
++++ b/kernel/irq/irqdesc.c
+@@ -119,6 +119,7 @@ static void desc_set_defaults(unsigned int irq, struct irq_desc *desc, int node,
+ desc->depth = 1;
+ desc->irq_count = 0;
+ desc->irqs_unhandled = 0;
++ desc->tot_count = 0;
+ desc->name = NULL;
+ desc->owner = owner;
+ for_each_possible_cpu(cpu)
+@@ -915,11 +916,15 @@ unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
+ unsigned int kstat_irqs(unsigned int irq)
+ {
+ struct irq_desc *desc = irq_to_desc(irq);
+- int cpu;
+ unsigned int sum = 0;
++ int cpu;
+
+ if (!desc || !desc->kstat_irqs)
+ return 0;
++ if (!irq_settings_is_per_cpu_devid(desc) &&
++ !irq_settings_is_per_cpu(desc))
++ return desc->tot_count;
++
+ for_each_possible_cpu(cpu)
+ sum += *per_cpu_ptr(desc->kstat_irqs, cpu);
+ return sum;
+--
+2.19.1
+
--- /dev/null
+From c8c73d56576c41cb266bc83aa9283f361906252c Mon Sep 17 00:00:00 2001
+From: Russell King <rmk+kernel@armlinux.org.uk>
+Date: Fri, 1 Mar 2019 11:02:52 -0800
+Subject: gpio: gpio-omap: fix level interrupt idling
+
+[ Upstream commit d01849f7deba81f4959fd9e51bf20dbf46987d1c ]
+
+Tony notes that the GPIO module does not idle when level interrupts are
+in use, as the wakeup appears to get stuck.
+
+After extensive investigation, it appears that the wakeup will only be
+cleared if the interrupt status register is cleared while the interrupt
+is enabled. However, we are currently clearing it with the interrupt
+disabled for level-based interrupts.
+
+It is acknowledged that this observed behaviour conflicts with a
+statement in the TRM:
+
+CAUTION
+ After servicing the interrupt, the status bit in the interrupt status
+ register (GPIOi.GPIO_IRQSTATUS_0 or GPIOi.GPIO_IRQSTATUS_1) must be
+ reset and the interrupt line released (by setting the corresponding
+ bit of the interrupt status register to 1) before enabling an
+ interrupt for the GPIO channel in the interrupt-enable register
+ (GPIOi.GPIO_IRQSTATUS_SET_0 or GPIOi.GPIO_IRQSTATUS_SET_1) to prevent
+ the occurrence of unexpected interrupts when enabling an interrupt
+ for the GPIO channel.
+
+However, this does not appear to be a practical problem.
+
+Further, as reported by Grygorii Strashko <grygorii.strashko@ti.com>,
+the TI Android kernel tree has an earlier similar patch as "GPIO: OMAP:
+Fix the sequence to clear the IRQ status" saying:
+
+ if the status is cleared after disabling the IRQ then sWAKEUP will not
+ be cleared and gates the module transition
+
+When we unmask the level interrupt after the interrupt has been handled,
+enable the interrupt and only then clear the interrupt. If the interrupt
+is still pending, the hardware will re-assert the interrupt status.
+
+Should the caution note in the TRM prove to be a problem, we could
+use a clear-enable-clear sequence instead.
+
+Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
+Cc: Keerthy <j-keerthy@ti.com>
+Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
+Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
+[tony@atomide.com: updated comments based on an earlier TI patch]
+Signed-off-by: Tony Lindgren <tony@atomide.com>
+Acked-by: Grygorii Strashko <grygorii.strashko@ti.com>
+Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/gpio/gpio-omap.c | 14 ++++++++------
+ 1 file changed, 8 insertions(+), 6 deletions(-)
+
+diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
+index e81008678a38..6c1acf642c8e 100644
+--- a/drivers/gpio/gpio-omap.c
++++ b/drivers/gpio/gpio-omap.c
+@@ -888,14 +888,16 @@ static void omap_gpio_unmask_irq(struct irq_data *d)
+ if (trigger)
+ omap_set_gpio_triggering(bank, offset, trigger);
+
+- /* For level-triggered GPIOs, the clearing must be done after
+- * the HW source is cleared, thus after the handler has run */
+- if (bank->level_mask & BIT(offset)) {
+- omap_set_gpio_irqenable(bank, offset, 0);
++ omap_set_gpio_irqenable(bank, offset, 1);
++
++ /*
++ * For level-triggered GPIOs, clearing must be done after the source
++ * is cleared, thus after the handler has run. OMAP4 needs this done
++ * after enabing the interrupt to clear the wakeup status.
++ */
++ if (bank->level_mask & BIT(offset))
+ omap_clear_gpio_irqstatus(bank, offset);
+- }
+
+- omap_set_gpio_irqenable(bank, offset, 1);
+ raw_spin_unlock_irqrestore(&bank->lock, flags);
+ }
+
+--
+2.19.1
+
--- /dev/null
+From 89db1ec513b8018c5cd28474408a7f421270d3c8 Mon Sep 17 00:00:00 2001
+From: Masahiro Yamada <yamada.masahiro@socionext.com>
+Date: Fri, 15 Feb 2019 13:04:26 +0900
+Subject: h8300: use cc-cross-prefix instead of hardcoding h8300-unknown-linux-
+
+[ Upstream commit fc2b47b55f17fd996f7a01975ce1c33c2f2513f6 ]
+
+It believe it is a bad idea to hardcode a specific compiler prefix
+that may or may not be installed on a user's system. It is annoying
+when testing features that should not require compilers at all.
+
+For example, mrproper, headers_install, etc. should work without
+any compiler.
+
+They look like follows on my machine.
+
+$ make ARCH=h8300 mrproper
+./scripts/gcc-version.sh: line 26: h8300-unknown-linux-gcc: command not found
+./scripts/gcc-version.sh: line 27: h8300-unknown-linux-gcc: command not found
+make: h8300-unknown-linux-gcc: Command not found
+make: h8300-unknown-linux-gcc: Command not found
+ [ a bunch of the same error messages continue ]
+
+$ make ARCH=h8300 headers_install
+./scripts/gcc-version.sh: line 26: h8300-unknown-linux-gcc: command not found
+./scripts/gcc-version.sh: line 27: h8300-unknown-linux-gcc: command not found
+make: h8300-unknown-linux-gcc: Command not found
+ HOSTCC scripts/basic/fixdep
+make: h8300-unknown-linux-gcc: Command not found
+ WRAP arch/h8300/include/generated/uapi/asm/kvm_para.h
+ [ snip ]
+
+The solution is to delete this line, or to use cc-cross-prefix like
+some architectures do. I chose the latter as a moderate fixup.
+
+I added an alternative 'h8300-linux-' because it is available at:
+
+https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/8.1.0/
+
+Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ arch/h8300/Makefile | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/arch/h8300/Makefile b/arch/h8300/Makefile
+index 58634e6bae92..55f251810129 100644
+--- a/arch/h8300/Makefile
++++ b/arch/h8300/Makefile
+@@ -27,7 +27,7 @@ KBUILD_LDFLAGS += $(ldflags-y)
+ CHECKFLAGS += -msize-long
+
+ ifeq ($(CROSS_COMPILE),)
+-CROSS_COMPILE := h8300-unknown-linux-
++CROSS_COMPILE := $(call cc-cross-prefix, h8300-unknown-linux- h8300-linux-)
+ endif
+
+ core-y += arch/$(ARCH)/kernel/ arch/$(ARCH)/mm/
+--
+2.19.1
+
--- /dev/null
+From deb08924e38b663f597e75619b968c267dd45f7e Mon Sep 17 00:00:00 2001
+From: Hong Liu <hong.liu@intel.com>
+Date: Tue, 12 Feb 2019 20:05:20 +0800
+Subject: HID: intel-ish-hid: avoid binding wrong ishtp_cl_device
+
+[ Upstream commit 0d28f49412405d87d3aae83da255070a46e67627 ]
+
+When performing a warm reset in ishtp bus driver, the ishtp_cl_device
+will not be removed, its fw_client still points to the already freed
+ishtp_device.fw_clients array.
+
+Later after driver finishing ishtp client enumeration, this dangling
+pointer may cause driver to bind the wrong ishtp_cl_device to the new
+client, causing wrong callback to be called for messages intended for
+the new client.
+
+This helps in development of firmware where frequent switching of
+firmwares is required without Linux reboot.
+
+Signed-off-by: Hong Liu <hong.liu@intel.com>
+Tested-by: Hongyan Song <hongyan.song@intel.com>
+Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
+Signed-off-by: Jiri Kosina <jkosina@suse.cz>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/hid/intel-ish-hid/ishtp/bus.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/hid/intel-ish-hid/ishtp/bus.c b/drivers/hid/intel-ish-hid/ishtp/bus.c
+index 2623a567ffba..f546635e9ac9 100644
+--- a/drivers/hid/intel-ish-hid/ishtp/bus.c
++++ b/drivers/hid/intel-ish-hid/ishtp/bus.c
+@@ -623,7 +623,8 @@ int ishtp_cl_device_bind(struct ishtp_cl *cl)
+ spin_lock_irqsave(&cl->dev->device_list_lock, flags);
+ list_for_each_entry(cl_device, &cl->dev->device_list,
+ device_link) {
+- if (cl_device->fw_client->client_id == cl->fw_client_id) {
++ if (cl_device->fw_client &&
++ cl_device->fw_client->client_id == cl->fw_client_id) {
+ cl->device = cl_device;
+ rv = 0;
+ break;
+@@ -683,6 +684,7 @@ void ishtp_bus_remove_all_clients(struct ishtp_device *ishtp_dev,
+ spin_lock_irqsave(&ishtp_dev->device_list_lock, flags);
+ list_for_each_entry_safe(cl_device, n, &ishtp_dev->device_list,
+ device_link) {
++ cl_device->fw_client = NULL;
+ if (warm_reset && cl_device->reference_count)
+ continue;
+
+--
+2.19.1
+
--- /dev/null
+From 88c886725dabffa44e02088a9c075fc99491e2b8 Mon Sep 17 00:00:00 2001
+From: Song Hongyan <hongyan.song@intel.com>
+Date: Tue, 22 Jan 2019 09:06:26 +0800
+Subject: HID: intel-ish: ipc: handle PIMR before ish_wakeup also clear PISR
+ busy_clear bit
+
+[ Upstream commit 2edefc056e4f0e6ec9508dd1aca2c18fa320efef ]
+
+Host driver should handle interrupt mask register earlier than wake up ish FW
+else there will be conditions when FW interrupt comes, host PIMR register still
+not set ready, so move the interrupt mask setting before ish_wakeup.
+
+Clear PISR busy_clear bit in ish_irq_handler. If not clear, there will be
+conditions host driver received a busy_clear interrupt (before the busy_clear
+mask bit is ready), it will return IRQ_NONE after check_generated_interrupt,
+the interrupt will never be cleared, causing the DEVICE not sending following
+IRQ.
+
+Since PISR clear should not be called for the CHV device we do this change.
+After the change, both ISH2HOST interrupt and busy_clear interrupt will be
+considered as interrupt from ISH, busy_clear interrupt will return IRQ_HANDLED
+from IPC_IS_BUSY check.
+
+Signed-off-by: Song Hongyan <hongyan.song@intel.com>
+Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
+Signed-off-by: Jiri Kosina <jkosina@suse.cz>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/hid/intel-ish-hid/ipc/ipc.c | 9 ++++++---
+ 1 file changed, 6 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/hid/intel-ish-hid/ipc/ipc.c b/drivers/hid/intel-ish-hid/ipc/ipc.c
+index bfbca7ec54ce..e00b9dbe220f 100644
+--- a/drivers/hid/intel-ish-hid/ipc/ipc.c
++++ b/drivers/hid/intel-ish-hid/ipc/ipc.c
+@@ -91,7 +91,10 @@ static bool check_generated_interrupt(struct ishtp_device *dev)
+ IPC_INT_FROM_ISH_TO_HOST_CHV_AB(pisr_val);
+ } else {
+ pisr_val = ish_reg_read(dev, IPC_REG_PISR_BXT);
+- interrupt_generated = IPC_INT_FROM_ISH_TO_HOST_BXT(pisr_val);
++ interrupt_generated = !!pisr_val;
++ /* only busy-clear bit is RW, others are RO */
++ if (pisr_val)
++ ish_reg_write(dev, IPC_REG_PISR_BXT, pisr_val);
+ }
+
+ return interrupt_generated;
+@@ -843,11 +846,11 @@ int ish_hw_start(struct ishtp_device *dev)
+ {
+ ish_set_host_rdy(dev);
+
++ set_host_ready(dev);
++
+ /* After that we can enable ISH DMA operation and wakeup ISHFW */
+ ish_wakeup(dev);
+
+- set_host_ready(dev);
+-
+ /* wait for FW-initiated reset flow */
+ if (!dev->recvd_hw_ready)
+ wait_event_interruptible_timeout(dev->wait_hw_ready,
+--
+2.19.1
+
--- /dev/null
+From e86c63080af8dc61b6dd70e38c9d5ab038b5740d Mon Sep 17 00:00:00 2001
+From: Buland Singh <bsingh@redhat.com>
+Date: Thu, 20 Dec 2018 17:35:24 +0530
+Subject: hpet: Fix missing '=' character in the __setup() code of
+ hpet_mmap_enable
+
+[ Upstream commit 24d48a61f2666630da130cc2ec2e526eacf229e3 ]
+
+Commit '3d035f580699 ("drivers/char/hpet.c: allow user controlled mmap for
+user processes")' introduced a new kernel command line parameter hpet_mmap,
+that is required to expose the memory map of the HPET registers to
+user-space. Unfortunately the kernel command line parameter 'hpet_mmap' is
+broken and never takes effect due to missing '=' character in the __setup()
+code of hpet_mmap_enable.
+
+Before this patch:
+
+dmesg output with the kernel command line parameter hpet_mmap=1
+
+[ 0.204152] HPET mmap disabled
+
+dmesg output with the kernel command line parameter hpet_mmap=0
+
+[ 0.204192] HPET mmap disabled
+
+After this patch:
+
+dmesg output with the kernel command line parameter hpet_mmap=1
+
+[ 0.203945] HPET mmap enabled
+
+dmesg output with the kernel command line parameter hpet_mmap=0
+
+[ 0.204652] HPET mmap disabled
+
+Fixes: 3d035f580699 ("drivers/char/hpet.c: allow user controlled mmap for user processes")
+Signed-off-by: Buland Singh <bsingh@redhat.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/char/hpet.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
+index 4a22b4b41aef..9bffcd37cc7b 100644
+--- a/drivers/char/hpet.c
++++ b/drivers/char/hpet.c
+@@ -377,7 +377,7 @@ static __init int hpet_mmap_enable(char *str)
+ pr_info("HPET mmap %s\n", hpet_mmap_enabled ? "enabled" : "disabled");
+ return 1;
+ }
+-__setup("hpet_mmap", hpet_mmap_enable);
++__setup("hpet_mmap=", hpet_mmap_enable);
+
+ static int hpet_mmap(struct file *file, struct vm_area_struct *vma)
+ {
+--
+2.19.1
+
--- /dev/null
+From 186d10d5c15b4148016730cecfc32db82d79ccf3 Mon Sep 17 00:00:00 2001
+From: David Tolnay <dtolnay@gmail.com>
+Date: Mon, 7 Jan 2019 14:36:11 -0800
+Subject: hwrng: virtio - Avoid repeated init of completion
+
+[ Upstream commit aef027db48da56b6f25d0e54c07c8401ada6ce21 ]
+
+The virtio-rng driver uses a completion called have_data to wait for a
+virtio read to be fulfilled by the hypervisor. The completion is reset
+before placing a buffer on the virtio queue and completed by the virtio
+callback once data has been written into the buffer.
+
+Prior to this commit, the driver called init_completion on this
+completion both during probe as well as when registering virtio buffers
+as part of a hwrng read operation. The second of these init_completion
+calls should instead be reinit_completion because the have_data
+completion has already been inited by probe. As described in
+Documentation/scheduler/completion.txt, "Calling init_completion() twice
+on the same completion object is most likely a bug".
+
+This bug was present in the initial implementation of virtio-rng in
+f7f510ec1957 ("virtio: An entropy device, as suggested by hpa"). Back
+then the have_data completion was a single static completion rather than
+a member of one of potentially multiple virtrng_info structs as
+implemented later by 08e53fbdb85c ("virtio-rng: support multiple
+virtio-rng devices"). The original driver incorrectly used
+init_completion rather than INIT_COMPLETION to reset have_data during
+read.
+
+Tested by running `head -c48 /dev/random | hexdump` within crosvm, the
+Chrome OS virtual machine monitor, and confirming that the virtio-rng
+driver successfully produces random bytes from the host.
+
+Signed-off-by: David Tolnay <dtolnay@gmail.com>
+Tested-by: David Tolnay <dtolnay@gmail.com>
+Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/char/hw_random/virtio-rng.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/char/hw_random/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c
+index b89df66ea1ae..7abd604e938c 100644
+--- a/drivers/char/hw_random/virtio-rng.c
++++ b/drivers/char/hw_random/virtio-rng.c
+@@ -73,7 +73,7 @@ static int virtio_read(struct hwrng *rng, void *buf, size_t size, bool wait)
+
+ if (!vi->busy) {
+ vi->busy = true;
+- init_completion(&vi->have_data);
++ reinit_completion(&vi->have_data);
+ register_buffer(vi, buf, size);
+ }
+
+--
+2.19.1
+
--- /dev/null
+From e5ba4469a027573c59150d9d99b05ce1b17863e6 Mon Sep 17 00:00:00 2001
+From: Thierry Reding <treding@nvidia.com>
+Date: Fri, 25 Jan 2019 14:11:42 +0100
+Subject: i2c: of: Try to find an I2C adapter matching the parent
+
+[ Upstream commit e814e688413aabd7b0d75e2a8ed1caa472951dec ]
+
+If an I2C adapter doesn't match the provided device tree node, also try
+matching the parent's device tree node. This allows finding an adapter
+based on the device node of the parent device that was used to register
+it.
+
+This fixes a regression on Tegra124-based Chromebooks (Nyan) where the
+eDP controller registers an I2C adapter that is used to read to EDID.
+After commit 993a815dcbb2 ("dt-bindings: panel: Add missing .txt
+suffix") this stopped working because the I2C adapter could no longer
+be found. The approach in this patch fixes the regression without
+introducing the issues that the above commit solved.
+
+Fixes: 17ab7806de0c ("drm: don't link DP aux i2c adapter to the hardware device node")
+Signed-off-by: Thierry Reding <treding@nvidia.com>
+Tested-by: Tristan Bastian <tristan-c.bastian@gmx.de>
+Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/i2c/i2c-core-of.c | 14 +++++++++++++-
+ 1 file changed, 13 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/i2c/i2c-core-of.c b/drivers/i2c/i2c-core-of.c
+index 6cb7ad608bcd..0f01cdba9d2c 100644
+--- a/drivers/i2c/i2c-core-of.c
++++ b/drivers/i2c/i2c-core-of.c
+@@ -121,6 +121,17 @@ static int of_dev_node_match(struct device *dev, void *data)
+ return dev->of_node == data;
+ }
+
++static int of_dev_or_parent_node_match(struct device *dev, void *data)
++{
++ if (dev->of_node == data)
++ return 1;
++
++ if (dev->parent)
++ return dev->parent->of_node == data;
++
++ return 0;
++}
++
+ /* must call put_device() when done with returned i2c_client device */
+ struct i2c_client *of_find_i2c_device_by_node(struct device_node *node)
+ {
+@@ -145,7 +156,8 @@ struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node *node)
+ struct device *dev;
+ struct i2c_adapter *adapter;
+
+- dev = bus_find_device(&i2c_bus_type, NULL, node, of_dev_node_match);
++ dev = bus_find_device(&i2c_bus_type, NULL, node,
++ of_dev_or_parent_node_match);
+ if (!dev)
+ return NULL;
+
+--
+2.19.1
+
--- /dev/null
+From 0766821d84aa45f3a6177dec47bfc56c98a1f99c Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?H=C3=A5kon=20Bugge?= <haakon.bugge@oracle.com>
+Date: Sun, 17 Feb 2019 15:45:12 +0100
+Subject: IB/mlx4: Increase the timeout for CM cache
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+[ Upstream commit 2612d723aadcf8281f9bf8305657129bd9f3cd57 ]
+
+Using CX-3 virtual functions, either from a bare-metal machine or
+pass-through from a VM, MAD packets are proxied through the PF driver.
+
+Since the VF drivers have separate name spaces for MAD Transaction Ids
+(TIDs), the PF driver has to re-map the TIDs and keep the book keeping
+in a cache.
+
+Following the RDMA Connection Manager (CM) protocol, it is clear when
+an entry has to evicted form the cache. But life is not perfect,
+remote peers may die or be rebooted. Hence, it's a timeout to wipe out
+a cache entry, when the PF driver assumes the remote peer has gone.
+
+During workloads where a high number of QPs are destroyed concurrently,
+excessive amount of CM DREQ retries has been observed
+
+The problem can be demonstrated in a bare-metal environment, where two
+nodes have instantiated 8 VFs each. This using dual ported HCAs, so we
+have 16 vPorts per physical server.
+
+64 processes are associated with each vPort and creates and destroys
+one QP for each of the remote 64 processes. That is, 1024 QPs per
+vPort, all in all 16K QPs. The QPs are created/destroyed using the
+CM.
+
+When tearing down these 16K QPs, excessive CM DREQ retries (and
+duplicates) are observed. With some cat/paste/awk wizardry on the
+infiniband_cm sysfs, we observe as sum of the 16 vPorts on one of the
+nodes:
+
+cm_rx_duplicates:
+ dreq 2102
+cm_rx_msgs:
+ drep 1989
+ dreq 6195
+ rep 3968
+ req 4224
+ rtu 4224
+cm_tx_msgs:
+ drep 4093
+ dreq 27568
+ rep 4224
+ req 3968
+ rtu 3968
+cm_tx_retries:
+ dreq 23469
+
+Note that the active/passive side is equally distributed between the
+two nodes.
+
+Enabling pr_debug in cm.c gives tons of:
+
+[171778.814239] <mlx4_ib> mlx4_ib_multiplex_cm_handler: id{slave:
+1,sl_cm_id: 0xd393089f} is NULL!
+
+By increasing the CM_CLEANUP_CACHE_TIMEOUT from 5 to 30 seconds, the
+tear-down phase of the application is reduced from approximately 90 to
+50 seconds. Retries/duplicates are also significantly reduced:
+
+cm_rx_duplicates:
+ dreq 2460
+[]
+cm_tx_retries:
+ dreq 3010
+ req 47
+
+Increasing the timeout further didn't help, as these duplicates and
+retries stems from a too short CMA timeout, which was 20 (~4 seconds)
+on the systems. By increasing the CMA timeout to 22 (~17 seconds), the
+numbers fell down to about 10 for both of them.
+
+Adjustment of the CMA timeout is not part of this commit.
+
+Signed-off-by: Håkon Bugge <haakon.bugge@oracle.com>
+Acked-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
+Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/infiniband/hw/mlx4/cm.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/infiniband/hw/mlx4/cm.c b/drivers/infiniband/hw/mlx4/cm.c
+index fedaf8260105..8c79a480f2b7 100644
+--- a/drivers/infiniband/hw/mlx4/cm.c
++++ b/drivers/infiniband/hw/mlx4/cm.c
+@@ -39,7 +39,7 @@
+
+ #include "mlx4_ib.h"
+
+-#define CM_CLEANUP_CACHE_TIMEOUT (5 * HZ)
++#define CM_CLEANUP_CACHE_TIMEOUT (30 * HZ)
+
+ struct id_map_entry {
+ struct rb_node node;
+--
+2.19.1
+
--- /dev/null
+From e77ae676fe2cb9fbe1e81abd6d71c9a524c524d8 Mon Sep 17 00:00:00 2001
+From: Linus Torvalds <torvalds@linux-foundation.org>
+Date: Wed, 6 Mar 2019 15:41:29 -0800
+Subject: iio: adc: fix warning in Qualcomm PM8xxx HK/XOADC driver
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+[ Upstream commit e0f0ae838a25464179d37f355d763f9ec139fc15 ]
+
+The pm8xxx_get_channel() implementation is unclear, and causes gcc to
+suddenly generate odd warnings. The trigger for the warning (at least
+for me) was the entirely unrelated commit 79a4e91d1bb2 ("device.h: Add
+__cold to dev_<level> logging functions"), which apparently changes gcc
+code generation in the caller function enough to cause this:
+
+ drivers/iio/adc/qcom-pm8xxx-xoadc.c: In function ‘pm8xxx_xoadc_probe’:
+ drivers/iio/adc/qcom-pm8xxx-xoadc.c:633:8: warning: ‘ch’ may be used uninitialized in this function [-Wmaybe-uninitialized]
+ ret = pm8xxx_read_channel_rsv(adc, ch, AMUX_RSV4,
+ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ &read_nomux_rsv4, true);
+ ~~~~~~~~~~~~~~~~~~~~~~~
+ drivers/iio/adc/qcom-pm8xxx-xoadc.c:426:27: note: ‘ch’ was declared here
+ struct pm8xxx_chan_info *ch;
+ ^~
+
+because gcc for some reason then isn't able to see that the termination
+condition for the "for( )" loop in that function is also the condition
+for returning NULL.
+
+So it's not _actually_ uninitialized, but the function is admittedly
+just unnecessarily oddly written.
+
+Simplify and clarify the function, making gcc also see that it always
+returns a valid initialized value.
+
+Cc: Joe Perches <joe@perches.com>
+Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Cc: Andy Gross <andy.gross@linaro.org>
+Cc: David Brown <david.brown@linaro.org>
+Cc: Jonathan Cameron <jic23@kernel.org>
+Cc: Hartmut Knaack <knaack.h@gmx.de>
+Cc: Lars-Peter Clausen <lars@metafoo.de>
+Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/iio/adc/qcom-pm8xxx-xoadc.c | 10 +++-------
+ 1 file changed, 3 insertions(+), 7 deletions(-)
+
+diff --git a/drivers/iio/adc/qcom-pm8xxx-xoadc.c b/drivers/iio/adc/qcom-pm8xxx-xoadc.c
+index b093ecddf1a8..54db848f0bcd 100644
+--- a/drivers/iio/adc/qcom-pm8xxx-xoadc.c
++++ b/drivers/iio/adc/qcom-pm8xxx-xoadc.c
+@@ -423,18 +423,14 @@ static irqreturn_t pm8xxx_eoc_irq(int irq, void *d)
+ static struct pm8xxx_chan_info *
+ pm8xxx_get_channel(struct pm8xxx_xoadc *adc, u8 chan)
+ {
+- struct pm8xxx_chan_info *ch;
+ int i;
+
+ for (i = 0; i < adc->nchans; i++) {
+- ch = &adc->chans[i];
++ struct pm8xxx_chan_info *ch = &adc->chans[i];
+ if (ch->hwchan->amux_channel == chan)
+- break;
++ return ch;
+ }
+- if (i == adc->nchans)
+- return NULL;
+-
+- return ch;
++ return NULL;
+ }
+
+ static int pm8xxx_read_channel_rsv(struct pm8xxx_xoadc *adc,
+--
+2.19.1
+
--- /dev/null
+From ff7fefa837c3e0a3e68ef0c5a63d236e010fcda1 Mon Sep 17 00:00:00 2001
+From: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
+Date: Thu, 7 Mar 2019 16:31:28 -0800
+Subject: include/linux/relay.h: fix percpu annotation in struct rchan
+
+[ Upstream commit 62461ac2e5b6520b6d65fc6d7d7b4b8df4b848d8 ]
+
+The percpu member of this structure is declared as:
+ struct ... ** __percpu member;
+So its type is:
+ __percpu pointer to pointer to struct ...
+
+But looking at how it's used, its type should be:
+ pointer to __percpu pointer to struct ...
+and it should thus be declared as:
+ struct ... * __percpu *member;
+
+So fix the placement of '__percpu' in the definition of this
+structures.
+
+This silents a few Sparse's warnings like:
+ warning: incorrect type in initializer (different address spaces)
+ expected void const [noderef] <asn:3> *__vpp_verify
+ got struct sched_domain **
+
+Link: http://lkml.kernel.org/r/20190118144902.79065-1-luc.vanoostenryck@gmail.com
+Fixes: 017c59c042d01 ("relay: Use per CPU constructs for the relay channel buffer pointers")
+Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
+Cc: Jens Axboe <axboe@suse.de>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ include/linux/relay.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/include/linux/relay.h b/include/linux/relay.h
+index e1bdf01a86e2..c759f96e39c1 100644
+--- a/include/linux/relay.h
++++ b/include/linux/relay.h
+@@ -66,7 +66,7 @@ struct rchan
+ struct kref kref; /* channel refcount */
+ void *private_data; /* for user-defined data */
+ size_t last_toobig; /* tried to log event > subbuf size */
+- struct rchan_buf ** __percpu buf; /* per-cpu channel buffers */
++ struct rchan_buf * __percpu *buf; /* per-cpu channel buffers */
+ int is_global; /* One global buffer ? */
+ struct list_head list; /* for channel list */
+ struct dentry *parent; /* parent dentry passed to open */
+--
+2.19.1
+
--- /dev/null
+From 6359592e7dd8f4abfdb34051e190af0a1e6183d8 Mon Sep 17 00:00:00 2001
+From: Hans de Goede <hdegoede@redhat.com>
+Date: Thu, 3 Jan 2019 18:10:45 -0800
+Subject: Input: soc_button_array - fix mapping of the 5th GPIO in a PNP0C40
+ device
+
+[ Upstream commit e9eb788f9442d1b5d93efdb30c3be071ce8a22b1 ]
+
+The Microsoft documenation for the PNP0C40 device aka the
+"Windows-compatible button array" describes the 5th GpioInt listed in
+the resources as: '5. Interrupt corresponding to the "Rotation Lock"
+button, if supported'.
+
+Notice this describes the 5th entry as a button while we sofar have been
+mapping it to EV_SW, SW_ROTATE_LOCK. On my Point of View TAB P1006W-232
+which actually comes with a rotation-lock button, the button indeed is a
+button and not a slider/switch. An image search for other Windows tablets
+has found 2 more models with a rotation-lock button and on both of those
+it too is a push-button and not a slider/switch.
+
+Further evidence can be found in the HUT extension HUTRR52 from Microsoft
+which adds rotation lock support to the HUT, which describes 2 different
+usages: "0xC9 System Display Rotation Lock Button" and
+"0xCA System Display Rotation Lock Slider Switch" note that switch is seen
+as a separate thing here and the non switch wording is an exact match for
+the "Windows-compatible button array" spec wording.
+
+TL;DR: our current mapping of the 5th GPIO to SW_ROTATE_LOCK is wrong
+because the 5th GPIO is for a push-button not a switch.
+
+This commit fixes this by maping the 5th GPIO to KEY_ROTATE_LOCK_TOGGLE.
+
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/input/misc/soc_button_array.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/input/misc/soc_button_array.c b/drivers/input/misc/soc_button_array.c
+index 23520df7650f..55cd6e0b409c 100644
+--- a/drivers/input/misc/soc_button_array.c
++++ b/drivers/input/misc/soc_button_array.c
+@@ -373,7 +373,7 @@ static struct soc_button_info soc_button_PNP0C40[] = {
+ { "home", 1, EV_KEY, KEY_LEFTMETA, false, true },
+ { "volume_up", 2, EV_KEY, KEY_VOLUMEUP, true, false },
+ { "volume_down", 3, EV_KEY, KEY_VOLUMEDOWN, true, false },
+- { "rotation_lock", 4, EV_SW, SW_ROTATE_LOCK, false, false },
++ { "rotation_lock", 4, EV_KEY, KEY_ROTATE_LOCK_TOGGLE, false, false },
+ { }
+ };
+
+--
+2.19.1
+
--- /dev/null
+From f5e9dfadd76f391e8561a69df50acc261da5a51a Mon Sep 17 00:00:00 2001
+From: Nicolas Boichat <drinkcat@chromium.org>
+Date: Mon, 28 Jan 2019 17:43:01 +0800
+Subject: iommu/io-pgtable-arm-v7s: Only kmemleak_ignore L2 tables
+
+[ Upstream commit 032ebd8548c9d05e8d2bdc7a7ec2fe29454b0ad0 ]
+
+L1 tables are allocated with __get_dma_pages, and therefore already
+ignored by kmemleak.
+
+Without this, the kernel would print this error message on boot,
+when the first L1 table is allocated:
+
+[ 2.810533] kmemleak: Trying to color unknown object at 0xffffffd652388000 as Black
+[ 2.818190] CPU: 5 PID: 39 Comm: kworker/5:0 Tainted: G S 4.19.16 #8
+[ 2.831227] Workqueue: events deferred_probe_work_func
+[ 2.836353] Call trace:
+...
+[ 2.852532] paint_ptr+0xa0/0xa8
+[ 2.855750] kmemleak_ignore+0x38/0x6c
+[ 2.859490] __arm_v7s_alloc_table+0x168/0x1f4
+[ 2.863922] arm_v7s_alloc_pgtable+0x114/0x17c
+[ 2.868354] alloc_io_pgtable_ops+0x3c/0x78
+...
+
+Fixes: e5fc9753b1a8314 ("iommu/io-pgtable: Add ARMv7 short descriptor support")
+Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
+Acked-by: Will Deacon <will.deacon@arm.com>
+Signed-off-by: Joerg Roedel <jroedel@suse.de>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/iommu/io-pgtable-arm-v7s.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/iommu/io-pgtable-arm-v7s.c b/drivers/iommu/io-pgtable-arm-v7s.c
+index fde728ea2900..48d4709a8e93 100644
+--- a/drivers/iommu/io-pgtable-arm-v7s.c
++++ b/drivers/iommu/io-pgtable-arm-v7s.c
+@@ -228,7 +228,8 @@ static void *__arm_v7s_alloc_table(int lvl, gfp_t gfp,
+ if (dma != phys)
+ goto out_unmap;
+ }
+- kmemleak_ignore(table);
++ if (lvl == 2)
++ kmemleak_ignore(table);
+ return table;
+
+ out_unmap:
+--
+2.19.1
+
--- /dev/null
+From d6d57b2eff6aec8ef25a2b61c5216ad63a69f70e Mon Sep 17 00:00:00 2001
+From: Raju Rangoju <rajur@chelsio.com>
+Date: Wed, 6 Feb 2019 22:54:44 +0530
+Subject: iw_cxgb4: fix srqidx leak during connection abort
+
+[ Upstream commit f368ff188ae4b3ef6f740a15999ea0373261b619 ]
+
+When an application aborts the connection by moving QP from RTS to ERROR,
+then iw_cxgb4's modify_rc_qp() RTS->ERROR logic sets the
+*srqidxp to 0 via t4_set_wq_in_error(&qhp->wq, 0), and aborts the
+connection by calling c4iw_ep_disconnect().
+
+c4iw_ep_disconnect() does the following:
+ 1. sends up a close_complete_upcall(ep, -ECONNRESET) to libcxgb4.
+ 2. sends abort request CPL to hw.
+
+But, since the close_complete_upcall() is sent before sending the
+ABORT_REQ to hw, libcxgb4 would fail to release the srqidx if the
+connection holds one. Because, the srqidx is passed up to libcxgb4 only
+after corresponding ABORT_RPL is processed by kernel in abort_rpl().
+
+This patch handle the corner-case by moving the call to
+close_complete_upcall() from c4iw_ep_disconnect() to abort_rpl(). So that
+libcxgb4 is notified about the -ECONNRESET only after abort_rpl(), and
+libcxgb4 can relinquish the srqidx properly.
+
+Signed-off-by: Raju Rangoju <rajur@chelsio.com>
+Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/infiniband/hw/cxgb4/cm.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
+index 0f83cbec33f3..a68569ec86bf 100644
+--- a/drivers/infiniband/hw/cxgb4/cm.c
++++ b/drivers/infiniband/hw/cxgb4/cm.c
+@@ -1904,8 +1904,10 @@ static int abort_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
+ }
+ mutex_unlock(&ep->com.mutex);
+
+- if (release)
++ if (release) {
++ close_complete_upcall(ep, -ECONNRESET);
+ release_ep_resources(ep);
++ }
+ c4iw_put_ep(&ep->com);
+ return 0;
+ }
+@@ -3608,7 +3610,6 @@ int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp)
+ if (close) {
+ if (abrupt) {
+ set_bit(EP_DISC_ABORT, &ep->com.history);
+- close_complete_upcall(ep, -ECONNRESET);
+ ret = send_abort(ep);
+ } else {
+ set_bit(EP_DISC_CLOSE, &ep->com.history);
+--
+2.19.1
+
--- /dev/null
+From 388a86df563dad2578e725fe15d34ad00173b98a Mon Sep 17 00:00:00 2001
+From: Johannes Berg <johannes.berg@intel.com>
+Date: Tue, 11 Dec 2018 21:20:43 +0100
+Subject: iwlwifi: mvm: fix RFH config command with >=10 CPUs
+
+[ Upstream commit dbf592f3d14fb7d532cb7c820b1065cf33e02aaa ]
+
+If we have >=10 (logical) CPUs, our command size exceeds the
+internal buffer size and the command fails; fix that by using
+IWL_HCMD_DFL_NOCOPY for the command that's allocated anyway.
+
+While at it, also fix the leak of cmd, and use struct_size()
+to calculate its size.
+
+Signed-off-by: Johannes Berg <johannes.berg@intel.com>
+Fixes: 8edbfaa19835 ("iwlwifi: mvm: configure multi RX queue")
+Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/wireless/intel/iwlwifi/mvm/fw.c | 20 ++++++++++++++------
+ 1 file changed, 14 insertions(+), 6 deletions(-)
+
+diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
+index 16c6c7f921a8..8b7d70e3a379 100644
+--- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
++++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
+@@ -132,13 +132,17 @@ static int iwl_send_rss_cfg_cmd(struct iwl_mvm *mvm)
+
+ static int iwl_configure_rxq(struct iwl_mvm *mvm)
+ {
+- int i, num_queues, size;
++ int i, num_queues, size, ret;
+ struct iwl_rfh_queue_config *cmd;
++ struct iwl_host_cmd hcmd = {
++ .id = WIDE_ID(DATA_PATH_GROUP, RFH_QUEUE_CONFIG_CMD),
++ .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
++ };
+
+ /* Do not configure default queue, it is configured via context info */
+ num_queues = mvm->trans->num_rx_queues - 1;
+
+- size = sizeof(*cmd) + num_queues * sizeof(struct iwl_rfh_queue_data);
++ size = struct_size(cmd, data, num_queues);
+
+ cmd = kzalloc(size, GFP_KERNEL);
+ if (!cmd)
+@@ -159,10 +163,14 @@ static int iwl_configure_rxq(struct iwl_mvm *mvm)
+ cmd->data[i].fr_bd_wid = cpu_to_le32(data.fr_bd_wid);
+ }
+
+- return iwl_mvm_send_cmd_pdu(mvm,
+- WIDE_ID(DATA_PATH_GROUP,
+- RFH_QUEUE_CONFIG_CMD),
+- 0, size, cmd);
++ hcmd.data[0] = cmd;
++ hcmd.len[0] = size;
++
++ ret = iwl_mvm_send_cmd(mvm, &hcmd);
++
++ kfree(cmd);
++
++ return ret;
+ }
+
+ static int iwl_mvm_send_dqa_cmd(struct iwl_mvm *mvm)
+--
+2.19.1
+
--- /dev/null
+From 4ece01f77b31688263afc93c1104cdd71b1e2e79 Mon Sep 17 00:00:00 2001
+From: Sara Sharon <sara.sharon@intel.com>
+Date: Thu, 13 Dec 2018 14:47:40 +0200
+Subject: iwlwifi: pcie: fix emergency path
+
+[ Upstream commit c6ac9f9fb98851f47b978a9476594fc3c477a34d ]
+
+Allocator swaps the pending requests with 0 when it starts
+working. This means that relying on it n RX path to decide if
+to move to emergency is not always a good idea, since it may
+be zero, but there are still a lot of unallocated RBs in the
+system. Change allocator to decrement the pending requests on
+real time. It is more expensive since it accesses the atomic
+variable more times, but it gives the RX path a better idea
+of the system's status.
+
+Reported-by: Ilan Peer <ilan.peer@intel.com>
+Signed-off-by: Sara Sharon <sara.sharon@intel.com>
+Fixes: 868a1e863f95 ("iwlwifi: pcie: avoid empty free RB queue")
+Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/wireless/intel/iwlwifi/pcie/rx.c | 11 ++++++++---
+ 1 file changed, 8 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c
+index d4a31e014c82..b2905f01b7df 100644
+--- a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c
++++ b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c
+@@ -502,7 +502,7 @@ static void iwl_pcie_rx_allocator(struct iwl_trans *trans)
+ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+ struct iwl_rb_allocator *rba = &trans_pcie->rba;
+ struct list_head local_empty;
+- int pending = atomic_xchg(&rba->req_pending, 0);
++ int pending = atomic_read(&rba->req_pending);
+
+ IWL_DEBUG_RX(trans, "Pending allocation requests = %d\n", pending);
+
+@@ -557,11 +557,13 @@ static void iwl_pcie_rx_allocator(struct iwl_trans *trans)
+ i++;
+ }
+
++ atomic_dec(&rba->req_pending);
+ pending--;
++
+ if (!pending) {
+- pending = atomic_xchg(&rba->req_pending, 0);
++ pending = atomic_read(&rba->req_pending);
+ IWL_DEBUG_RX(trans,
+- "Pending allocation requests = %d\n",
++ "Got more pending allocation requests = %d\n",
+ pending);
+ }
+
+@@ -573,12 +575,15 @@ static void iwl_pcie_rx_allocator(struct iwl_trans *trans)
+ spin_unlock(&rba->lock);
+
+ atomic_inc(&rba->req_ready);
++
+ }
+
+ spin_lock(&rba->lock);
+ /* return unused rbds to the allocator empty list */
+ list_splice_tail(&local_empty, &rba->rbd_empty);
+ spin_unlock(&rba->lock);
++
++ IWL_DEBUG_RX(trans, "%s, exit.\n", __func__);
+ }
+
+ /*
+--
+2.19.1
+
--- /dev/null
+From 185dd1843fdd9fb85606e1bc858e307355d23392 Mon Sep 17 00:00:00 2001
+From: luojiajun <luojiajun3@huawei.com>
+Date: Fri, 1 Mar 2019 00:30:00 -0500
+Subject: jbd2: fix invalid descriptor block checksum
+
+[ Upstream commit 6e876c3dd205d30b0db6850e97a03d75457df007 ]
+
+In jbd2_journal_commit_transaction(), if we are in abort mode,
+we may flush the buffer without setting descriptor block checksum
+by goto start_journal_io. Then fs is mounted,
+jbd2_descriptor_block_csum_verify() failed.
+
+[ 271.379811] EXT4-fs (vdd): shut down requested (2)
+[ 271.381827] Aborting journal on device vdd-8.
+[ 271.597136] JBD2: Invalid checksum recovering block 22199 in log
+[ 271.598023] JBD2: recovery failed
+[ 271.598484] EXT4-fs (vdd): error loading journal
+
+Fix this problem by keep setting descriptor block checksum if the
+descriptor buffer is not NULL.
+
+This checksum problem can be reproduced by xfstests generic/388.
+
+Signed-off-by: luojiajun <luojiajun3@huawei.com>
+Signed-off-by: Theodore Ts'o <tytso@mit.edu>
+Reviewed-by: Jan Kara <jack@suse.cz>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ fs/jbd2/commit.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
+index 150cc030b4d7..65ea0355a4f6 100644
+--- a/fs/jbd2/commit.c
++++ b/fs/jbd2/commit.c
+@@ -691,9 +691,11 @@ void jbd2_journal_commit_transaction(journal_t *journal)
+ the last tag we set up. */
+
+ tag->t_flags |= cpu_to_be16(JBD2_FLAG_LAST_TAG);
+-
+- jbd2_descriptor_block_csum_set(journal, descriptor);
+ start_journal_io:
++ if (descriptor)
++ jbd2_descriptor_block_csum_set(journal,
++ descriptor);
++
+ for (i = 0; i < bufs; i++) {
+ struct buffer_head *bh = wbuf[i];
+ /*
+--
+2.19.1
+
--- /dev/null
+From e3a8115008c083ab25450b4531c869755300ed59 Mon Sep 17 00:00:00 2001
+From: Theodore Ts'o <tytso@mit.edu>
+Date: Thu, 14 Feb 2019 16:27:14 -0500
+Subject: jbd2: fix race when writing superblock
+
+[ Upstream commit 538bcaa6261b77e71d37f5596c33127c1a3ec3f7 ]
+
+The jbd2 superblock is lockless now, so there is probably a race
+condition between writing it so disk and modifing contents of it, which
+may lead to checksum error. The following race is the one case that we
+have captured.
+
+jbd2 fsstress
+jbd2_journal_commit_transaction
+ jbd2_journal_update_sb_log_tail
+ jbd2_write_superblock
+ jbd2_superblock_csum_set jbd2_journal_revoke
+ jbd2_journal_set_features(revork)
+ modify superblock
+ submit_bh(checksum incorrect)
+
+Fix this by locking the buffer head before modifing it. We always
+write the jbd2 superblock after we modify it, so this just means
+calling the lock_buffer() a little earlier.
+
+This checksum corruption problem can be reproduced by xfstests
+generic/475.
+
+Reported-by: zhangyi (F) <yi.zhang@huawei.com>
+Suggested-by: Jan Kara <jack@suse.cz>
+Signed-off-by: Theodore Ts'o <tytso@mit.edu>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ fs/jbd2/journal.c | 52 ++++++++++++++++++++++++-----------------------
+ 1 file changed, 27 insertions(+), 25 deletions(-)
+
+diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
+index 8ef6b6daaa7a..88f2a49338a1 100644
+--- a/fs/jbd2/journal.c
++++ b/fs/jbd2/journal.c
+@@ -1356,6 +1356,10 @@ static int journal_reset(journal_t *journal)
+ return jbd2_journal_start_thread(journal);
+ }
+
++/*
++ * This function expects that the caller will have locked the journal
++ * buffer head, and will return with it unlocked
++ */
+ static int jbd2_write_superblock(journal_t *journal, int write_flags)
+ {
+ struct buffer_head *bh = journal->j_sb_buffer;
+@@ -1365,7 +1369,6 @@ static int jbd2_write_superblock(journal_t *journal, int write_flags)
+ trace_jbd2_write_superblock(journal, write_flags);
+ if (!(journal->j_flags & JBD2_BARRIER))
+ write_flags &= ~(REQ_FUA | REQ_PREFLUSH);
+- lock_buffer(bh);
+ if (buffer_write_io_error(bh)) {
+ /*
+ * Oh, dear. A previous attempt to write the journal
+@@ -1424,6 +1427,7 @@ int jbd2_journal_update_sb_log_tail(journal_t *journal, tid_t tail_tid,
+ jbd_debug(1, "JBD2: updating superblock (start %lu, seq %u)\n",
+ tail_block, tail_tid);
+
++ lock_buffer(journal->j_sb_buffer);
+ sb->s_sequence = cpu_to_be32(tail_tid);
+ sb->s_start = cpu_to_be32(tail_block);
+
+@@ -1454,18 +1458,17 @@ static void jbd2_mark_journal_empty(journal_t *journal, int write_op)
+ journal_superblock_t *sb = journal->j_superblock;
+
+ BUG_ON(!mutex_is_locked(&journal->j_checkpoint_mutex));
+- read_lock(&journal->j_state_lock);
+- /* Is it already empty? */
+- if (sb->s_start == 0) {
+- read_unlock(&journal->j_state_lock);
++ lock_buffer(journal->j_sb_buffer);
++ if (sb->s_start == 0) { /* Is it already empty? */
++ unlock_buffer(journal->j_sb_buffer);
+ return;
+ }
++
+ jbd_debug(1, "JBD2: Marking journal as empty (seq %d)\n",
+ journal->j_tail_sequence);
+
+ sb->s_sequence = cpu_to_be32(journal->j_tail_sequence);
+ sb->s_start = cpu_to_be32(0);
+- read_unlock(&journal->j_state_lock);
+
+ jbd2_write_superblock(journal, write_op);
+
+@@ -1488,9 +1491,8 @@ void jbd2_journal_update_sb_errno(journal_t *journal)
+ journal_superblock_t *sb = journal->j_superblock;
+ int errcode;
+
+- read_lock(&journal->j_state_lock);
++ lock_buffer(journal->j_sb_buffer);
+ errcode = journal->j_errno;
+- read_unlock(&journal->j_state_lock);
+ if (errcode == -ESHUTDOWN)
+ errcode = 0;
+ jbd_debug(1, "JBD2: updating superblock error (errno %d)\n", errcode);
+@@ -1894,28 +1896,27 @@ int jbd2_journal_set_features (journal_t *journal, unsigned long compat,
+
+ sb = journal->j_superblock;
+
++ /* Load the checksum driver if necessary */
++ if ((journal->j_chksum_driver == NULL) &&
++ INCOMPAT_FEATURE_ON(JBD2_FEATURE_INCOMPAT_CSUM_V3)) {
++ journal->j_chksum_driver = crypto_alloc_shash("crc32c", 0, 0);
++ if (IS_ERR(journal->j_chksum_driver)) {
++ printk(KERN_ERR "JBD2: Cannot load crc32c driver.\n");
++ journal->j_chksum_driver = NULL;
++ return 0;
++ }
++ /* Precompute checksum seed for all metadata */
++ journal->j_csum_seed = jbd2_chksum(journal, ~0, sb->s_uuid,
++ sizeof(sb->s_uuid));
++ }
++
++ lock_buffer(journal->j_sb_buffer);
++
+ /* If enabling v3 checksums, update superblock */
+ if (INCOMPAT_FEATURE_ON(JBD2_FEATURE_INCOMPAT_CSUM_V3)) {
+ sb->s_checksum_type = JBD2_CRC32C_CHKSUM;
+ sb->s_feature_compat &=
+ ~cpu_to_be32(JBD2_FEATURE_COMPAT_CHECKSUM);
+-
+- /* Load the checksum driver */
+- if (journal->j_chksum_driver == NULL) {
+- journal->j_chksum_driver = crypto_alloc_shash("crc32c",
+- 0, 0);
+- if (IS_ERR(journal->j_chksum_driver)) {
+- printk(KERN_ERR "JBD2: Cannot load crc32c "
+- "driver.\n");
+- journal->j_chksum_driver = NULL;
+- return 0;
+- }
+-
+- /* Precompute checksum seed for all metadata */
+- journal->j_csum_seed = jbd2_chksum(journal, ~0,
+- sb->s_uuid,
+- sizeof(sb->s_uuid));
+- }
+ }
+
+ /* If enabling v1 checksums, downgrade superblock */
+@@ -1927,6 +1928,7 @@ int jbd2_journal_set_features (journal_t *journal, unsigned long compat,
+ sb->s_feature_compat |= cpu_to_be32(compat);
+ sb->s_feature_ro_compat |= cpu_to_be32(ro);
+ sb->s_feature_incompat |= cpu_to_be32(incompat);
++ unlock_buffer(journal->j_sb_buffer);
+
+ return 1;
+ #undef COMPAT_FEATURE_ON
+--
+2.19.1
+
--- /dev/null
+From c3d2bf390f739423a7022f93b3b30c3d3e9f6308 Mon Sep 17 00:00:00 2001
+From: Masahiro Yamada <yamada.masahiro@socionext.com>
+Date: Fri, 22 Feb 2019 16:40:10 +0900
+Subject: kbuild: invoke syncconfig if include/config/auto.conf.cmd is missing
+
+[ Upstream commit 9390dff66a52d1a60c6e517d8fa6cdbdffc83cb1 ]
+
+If include/config/auto.conf.cmd is lost for some reasons, it is not
+self-healing, so the top Makefile misses to run syncconfig.
+Move include/config/auto.conf.cmd to the target side.
+
+I used a pattern rule instead of a normal rule here although it is
+a bit gross.
+
+If the rule were written with a normal rule like this,
+
+ include/config/auto.conf \
+ include/config/auto.conf.cmd \
+ include/config/tristate.conf: $(KCONFIG_CONFIG)
+ $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig
+
+... syncconfig would be executed per target.
+
+Using a pattern rule makes sure that syncconfig is executed just once
+because Make assumes the recipe will create all of the targets.
+
+Here is a quote from the GNU Make manual [1]:
+
+"Pattern rules may have more than one target. Unlike normal rules,
+this does not act as many different rules with the same prerequisites
+and recipe. If a pattern rule has multiple targets, make knows that
+the rule's recipe is responsible for making all of the targets. The
+recipe is executed only once to make all the targets. When searching
+for a pattern rule to match a target, the target patterns of a rule
+other than the one that matches the target in need of a rule are
+incidental: make worries only about giving a recipe and prerequisites
+to the file presently in question. However, when this file's recipe is
+run, the other targets are marked as having been updated themselves."
+
+[1]: https://www.gnu.org/software/make/manual/html_node/Pattern-Intro.html
+
+Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ Makefile | 7 +++++--
+ 1 file changed, 5 insertions(+), 2 deletions(-)
+
+diff --git a/Makefile b/Makefile
+index 8de5fab711d8..f1a5d7deaf5f 100644
+--- a/Makefile
++++ b/Makefile
+@@ -626,12 +626,15 @@ ifeq ($(may-sync-config),1)
+ -include include/config/auto.conf.cmd
+
+ # To avoid any implicit rule to kick in, define an empty command
+-$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
++$(KCONFIG_CONFIG): ;
+
+ # The actual configuration files used during the build are stored in
+ # include/generated/ and include/config/. Update them if .config is newer than
+ # include/config/auto.conf (which mirrors .config).
+-include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
++#
++# This exploits the 'multi-target pattern rule' trick.
++# The syncconfig should be executed only once to make all the targets.
++%/auto.conf %/auto.conf.cmd %/tristate.conf: $(KCONFIG_CONFIG)
+ $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig
+ else
+ # External modules and some install targets need include/generated/autoconf.h
+--
+2.19.1
+
--- /dev/null
+From b86843d11b3a9cd286198f193dffa9266ca3fb49 Mon Sep 17 00:00:00 2001
+From: Andrea Righi <righi.andrea@gmail.com>
+Date: Wed, 13 Feb 2019 01:15:34 +0900
+Subject: kprobes: Prohibit probing on bsearch()
+
+[ Upstream commit 02106f883cd745523f7766d90a739f983f19e650 ]
+
+Since kprobe breakpoing handler is using bsearch(), probing on this
+routine can cause recursive breakpoint problem.
+
+int3
+ ->do_int3()
+ ->ftrace_int3_handler()
+ ->ftrace_location()
+ ->ftrace_location_range()
+ ->bsearch() -> int3
+
+Prohibit probing on bsearch().
+
+Signed-off-by: Andrea Righi <righi.andrea@gmail.com>
+Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
+Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
+Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
+Cc: Jiri Olsa <jolsa@redhat.com>
+Cc: Linus Torvalds <torvalds@linux-foundation.org>
+Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Cc: Steven Rostedt <rostedt@goodmis.org>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Link: http://lkml.kernel.org/r/154998813406.31052.8791425358974650922.stgit@devbox
+Signed-off-by: Ingo Molnar <mingo@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ lib/bsearch.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/lib/bsearch.c b/lib/bsearch.c
+index 18b445b010c3..82512fe7b33c 100644
+--- a/lib/bsearch.c
++++ b/lib/bsearch.c
+@@ -11,6 +11,7 @@
+
+ #include <linux/export.h>
+ #include <linux/bsearch.h>
++#include <linux/kprobes.h>
+
+ /*
+ * bsearch - binary search an array of elements
+@@ -53,3 +54,4 @@ void *bsearch(const void *key, const void *base, size_t num, size_t size,
+ return NULL;
+ }
+ EXPORT_SYMBOL(bsearch);
++NOKPROBE_SYMBOL(bsearch);
+--
+2.19.1
+
--- /dev/null
+From 1b52b6a49493e417e58e8aea1eb3bb2554738b3c Mon Sep 17 00:00:00 2001
+From: Masami Hiramatsu <mhiramat@kernel.org>
+Date: Wed, 13 Feb 2019 01:14:37 +0900
+Subject: kprobes: Prohibit probing on RCU debug routine
+
+[ Upstream commit a39f15b9644fac3f950f522c39e667c3af25c588 ]
+
+Since kprobe itself depends on RCU, probing on RCU debug
+routine can cause recursive breakpoint bugs.
+
+Prohibit probing on RCU debug routines.
+
+int3
+ ->do_int3()
+ ->ist_enter()
+ ->RCU_LOCKDEP_WARN()
+ ->debug_lockdep_rcu_enabled() -> int3
+
+Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
+Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
+Cc: Andrea Righi <righi.andrea@gmail.com>
+Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
+Cc: Jiri Olsa <jolsa@redhat.com>
+Cc: Linus Torvalds <torvalds@linux-foundation.org>
+Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Cc: Steven Rostedt <rostedt@goodmis.org>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Link: http://lkml.kernel.org/r/154998807741.31052.11229157537816341591.stgit@devbox
+Signed-off-by: Ingo Molnar <mingo@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ kernel/rcu/update.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/kernel/rcu/update.c b/kernel/rcu/update.c
+index 39cb23d22109..81688a133552 100644
+--- a/kernel/rcu/update.c
++++ b/kernel/rcu/update.c
+@@ -52,6 +52,7 @@
+ #include <linux/tick.h>
+ #include <linux/rcupdate_wait.h>
+ #include <linux/sched/isolation.h>
++#include <linux/kprobes.h>
+
+ #define CREATE_TRACE_POINTS
+
+@@ -253,6 +254,7 @@ int notrace debug_lockdep_rcu_enabled(void)
+ current->lockdep_recursion == 0;
+ }
+ EXPORT_SYMBOL_GPL(debug_lockdep_rcu_enabled);
++NOKPROBE_SYMBOL(debug_lockdep_rcu_enabled);
+
+ /**
+ * rcu_read_lock_held() - might we be in RCU read-side critical section?
+--
+2.19.1
+
--- /dev/null
+From 55b43ad411d26ff1ceeb6fc013fe3f0af03040a8 Mon Sep 17 00:00:00 2001
+From: Andrea Righi <righi.andrea@gmail.com>
+Date: Thu, 6 Dec 2018 10:56:48 +0100
+Subject: kprobes/x86: Blacklist non-attachable interrupt functions
+
+[ Upstream commit a50480cb6d61d5c5fc13308479407b628b6bc1c5 ]
+
+These interrupt functions are already non-attachable by kprobes.
+Blacklist them explicitly so that they can show up in
+/sys/kernel/debug/kprobes/blacklist and tools like BCC can use this
+additional information.
+
+Signed-off-by: Andrea Righi <righi.andrea@gmail.com>
+Cc: Andy Lutomirski <luto@kernel.org>
+Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
+Cc: Borislav Petkov <bp@alien8.de>
+Cc: David S. Miller <davem@davemloft.net>
+Cc: Linus Torvalds <torvalds@linux-foundation.org>
+Cc: Masami Hiramatsu <mhiramat@kernel.org>
+Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Cc: Yonghong Song <yhs@fb.com>
+Link: http://lkml.kernel.org/r/20181206095648.GA8249@Dell
+Signed-off-by: Ingo Molnar <mingo@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ arch/x86/entry/entry_64.S | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
+index f95dcb209fdf..617df50a11d9 100644
+--- a/arch/x86/entry/entry_64.S
++++ b/arch/x86/entry/entry_64.S
+@@ -627,6 +627,7 @@ ENTRY(interrupt_entry)
+
+ ret
+ END(interrupt_entry)
++_ASM_NOKPROBE(interrupt_entry)
+
+
+ /* Interrupt entry/exit. */
+@@ -826,6 +827,7 @@ native_irq_return_ldt:
+ jmp native_irq_return_iret
+ #endif
+ END(common_interrupt)
++_ASM_NOKPROBE(common_interrupt)
+
+ /*
+ * APIC interrupts.
+@@ -840,6 +842,7 @@ ENTRY(\sym)
+ call \do_sym /* rdi points to pt_regs */
+ jmp ret_from_intr
+ END(\sym)
++_ASM_NOKPROBE(\sym)
+ .endm
+
+ /* Make sure APIC interrupt handlers end up in the irqentry section: */
+@@ -984,6 +987,7 @@ ENTRY(\sym)
+
+ jmp error_exit
+ .endif
++_ASM_NOKPROBE(\sym)
+ END(\sym)
+ .endm
+
+--
+2.19.1
+
--- /dev/null
+From c15e9ef788a7ea1969067cefbff09ed1f31686c8 Mon Sep 17 00:00:00 2001
+From: Michal Kazior <michal@plume.com>
+Date: Mon, 11 Feb 2019 10:29:27 +0100
+Subject: leds: lp55xx: fix null deref on firmware load failure
+
+[ Upstream commit 5ddb0869bfc1bca6cfc592c74c64a026f936638c ]
+
+I've stumbled upon a kernel crash and the logs
+pointed me towards the lp5562 driver:
+
+> <4>[306013.841294] lp5562 0-0030: Direct firmware load for lp5562 failed with error -2
+> <4>[306013.894990] lp5562 0-0030: Falling back to user helper
+> ...
+> <3>[306073.924886] lp5562 0-0030: firmware request failed
+> <1>[306073.939456] Unable to handle kernel NULL pointer dereference at virtual address 00000000
+> <4>[306074.251011] PC is at _raw_spin_lock+0x1c/0x58
+> <4>[306074.255539] LR is at release_firmware+0x6c/0x138
+> ...
+
+After taking a look I noticed firmware_release()
+could be called with either NULL or a dangling
+pointer.
+
+Fixes: 10c06d178df11 ("leds-lp55xx: support firmware interface")
+Signed-off-by: Michal Kazior <michal@plume.com>
+Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/leds/leds-lp55xx-common.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/leds/leds-lp55xx-common.c b/drivers/leds/leds-lp55xx-common.c
+index 3d79a6380761..723f2f17497a 100644
+--- a/drivers/leds/leds-lp55xx-common.c
++++ b/drivers/leds/leds-lp55xx-common.c
+@@ -201,7 +201,7 @@ static void lp55xx_firmware_loaded(const struct firmware *fw, void *context)
+
+ if (!fw) {
+ dev_err(dev, "firmware request failed\n");
+- goto out;
++ return;
+ }
+
+ /* handling firmware data is chip dependent */
+@@ -214,9 +214,9 @@ static void lp55xx_firmware_loaded(const struct firmware *fw, void *context)
+
+ mutex_unlock(&chip->lock);
+
+-out:
+ /* firmware should be released for other channel use */
+ release_firmware(chip->fw);
++ chip->fw = NULL;
+ }
+
+ static int lp55xx_request_firmware(struct lp55xx_chip *chip)
+--
+2.19.1
+
--- /dev/null
+From 37fbd537dc63d9ed6c20bcfd35bcb4319e9ba4e9 Mon Sep 17 00:00:00 2001
+From: Stanislav Fomichev <sdf@google.com>
+Date: Wed, 6 Mar 2019 11:59:27 -0800
+Subject: libbpf: force fixdep compilation at the start of the build
+
+[ Upstream commit 8e2688876c7f7073d925e1f150e86b8ed3338f52 ]
+
+libbpf targets don't explicitly depend on fixdep target, so when
+we do 'make -j$(nproc)', there is a high probability, that some
+objects will be built before fixdep binary is available.
+
+Fix this by running sub-make; this makes sure that fixdep dependency
+is properly accounted for.
+
+For the same issue in perf, see commit abb26210a395 ("perf tools: Force
+fixdep compilation at the start of the build").
+
+Before:
+
+$ rm -rf /tmp/bld; mkdir /tmp/bld; make -j$(nproc) O=/tmp/bld -C tools/lib/bpf/
+
+Auto-detecting system features:
+... libelf: [ on ]
+... bpf: [ on ]
+
+ HOSTCC /tmp/bld/fixdep.o
+ CC /tmp/bld/libbpf.o
+ CC /tmp/bld/bpf.o
+ CC /tmp/bld/btf.o
+ CC /tmp/bld/nlattr.o
+ CC /tmp/bld/libbpf_errno.o
+ CC /tmp/bld/str_error.o
+ CC /tmp/bld/netlink.o
+ CC /tmp/bld/bpf_prog_linfo.o
+ CC /tmp/bld/libbpf_probes.o
+ CC /tmp/bld/xsk.o
+ HOSTLD /tmp/bld/fixdep-in.o
+ LINK /tmp/bld/fixdep
+ LD /tmp/bld/libbpf-in.o
+ LINK /tmp/bld/libbpf.a
+ LINK /tmp/bld/libbpf.so
+ LINK /tmp/bld/test_libbpf
+
+$ head /tmp/bld/.libbpf.o.cmd
+ # cannot find fixdep (/usr/local/google/home/sdf/src/linux/xxx//fixdep)
+ # using basic dep data
+
+/tmp/bld/libbpf.o: libbpf.c /usr/include/stdc-predef.h \
+ /usr/include/stdlib.h /usr/include/features.h \
+ /usr/include/x86_64-linux-gnu/sys/cdefs.h \
+ /usr/include/x86_64-linux-gnu/bits/wordsize.h \
+ /usr/include/x86_64-linux-gnu/gnu/stubs.h \
+ /usr/include/x86_64-linux-gnu/gnu/stubs-64.h \
+ /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h \
+
+After:
+
+$ rm -rf /tmp/bld; mkdir /tmp/bld; make -j$(nproc) O=/tmp/bld -C tools/lib/bpf/
+
+Auto-detecting system features:
+... libelf: [ on ]
+... bpf: [ on ]
+
+ HOSTCC /tmp/bld/fixdep.o
+ HOSTLD /tmp/bld/fixdep-in.o
+ LINK /tmp/bld/fixdep
+ CC /tmp/bld/libbpf.o
+ CC /tmp/bld/bpf.o
+ CC /tmp/bld/nlattr.o
+ CC /tmp/bld/btf.o
+ CC /tmp/bld/libbpf_errno.o
+ CC /tmp/bld/str_error.o
+ CC /tmp/bld/netlink.o
+ CC /tmp/bld/bpf_prog_linfo.o
+ CC /tmp/bld/libbpf_probes.o
+ CC /tmp/bld/xsk.o
+ LD /tmp/bld/libbpf-in.o
+ LINK /tmp/bld/libbpf.a
+ LINK /tmp/bld/libbpf.so
+ LINK /tmp/bld/test_libbpf
+
+$ head /tmp/bld/.libbpf.o.cmd
+cmd_/tmp/bld/libbpf.o := gcc -Wp,-MD,/tmp/bld/.libbpf.o.d -Wp,-MT,/tmp/bld/libbpf.o -g -Wall -DHAVE_LIBELF_MMAP_SUPPORT -DCOMPAT_NEED_REALLOCARRAY -Wbad-function-cast -Wdeclaration-after-statement -Wformat-security -Wformat-y2k -Winit-self -Wmissing-declarations -Wmissing-prototypes -Wnested-externs -Wno-system-headers -Wold-style-definition -Wpacked -Wredundant-decls -Wshadow -Wstrict-prototypes -Wswitch-default -Wswitch-enum -Wundef -Wwrite-strings -Wformat -Wstrict-aliasing=3 -Werror -Wall -fPIC -I. -I/usr/local/google/home/sdf/src/linux/tools/include -I/usr/local/google/home/sdf/src/linux/tools/arch/x86/include/uapi -I/usr/local/google/home/sdf/src/linux/tools/include/uapi -fvisibility=hidden -D"BUILD_STR(s)=$(pound)s" -c -o /tmp/bld/libbpf.o libbpf.c
+
+source_/tmp/bld/libbpf.o := libbpf.c
+
+deps_/tmp/bld/libbpf.o := \
+ /usr/include/stdc-predef.h \
+ /usr/include/stdlib.h \
+ /usr/include/features.h \
+ /usr/include/x86_64-linux-gnu/sys/cdefs.h \
+ /usr/include/x86_64-linux-gnu/bits/wordsize.h \
+
+Fixes: 7c422f557266 ("tools build: Build fixdep helper from perf and basic libs")
+Reported-by: Eric Dumazet <edumazet@google.com>
+Signed-off-by: Stanislav Fomichev <sdf@google.com>
+Acked-by: Yonghong Song <yhs@fb.com>
+Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ tools/lib/bpf/Makefile | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile
+index d49902e818b5..3624557550a1 100644
+--- a/tools/lib/bpf/Makefile
++++ b/tools/lib/bpf/Makefile
+@@ -149,7 +149,8 @@ CMD_TARGETS = $(LIB_FILE)
+
+ TARGETS = $(CMD_TARGETS)
+
+-all: fixdep all_cmd
++all: fixdep
++ $(Q)$(MAKE) all_cmd
+
+ all_cmd: $(CMD_TARGETS)
+
+--
+2.19.1
+
--- /dev/null
+From 0496bd99e887f532ec2e2b41b572d6644c25f311 Mon Sep 17 00:00:00 2001
+From: Dongli Zhang <dongli.zhang@oracle.com>
+Date: Fri, 22 Feb 2019 22:10:20 +0800
+Subject: loop: set GENHD_FL_NO_PART_SCAN after blkdev_reread_part()
+
+[ Upstream commit 758a58d0bc67457f1215321a536226654a830eeb ]
+
+Commit 0da03cab87e6
+("loop: Fix deadlock when calling blkdev_reread_part()") moves
+blkdev_reread_part() out of the loop_ctl_mutex. However,
+GENHD_FL_NO_PART_SCAN is set before __blkdev_reread_part(). As a result,
+__blkdev_reread_part() will fail the check of GENHD_FL_NO_PART_SCAN and
+will not rescan the loop device to delete all partitions.
+
+Below are steps to reproduce the issue:
+
+step1 # dd if=/dev/zero of=tmp.raw bs=1M count=100
+step2 # losetup -P /dev/loop0 tmp.raw
+step3 # parted /dev/loop0 mklabel gpt
+step4 # parted -a none -s /dev/loop0 mkpart primary 64s 1
+step5 # losetup -d /dev/loop0
+
+Step5 will not be able to delete /dev/loop0p1 (introduced by step4) and
+there is below kernel warning message:
+
+[ 464.414043] __loop_clr_fd: partition scan of loop0 failed (rc=-22)
+
+This patch sets GENHD_FL_NO_PART_SCAN after blkdev_reread_part().
+
+Fixes: 0da03cab87e6 ("loop: Fix deadlock when calling blkdev_reread_part()")
+Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
+Reviewed-by: Jan Kara <jack@suse.cz>
+Signed-off-by: Jens Axboe <axboe@kernel.dk>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/block/loop.c | 21 +++++++++++++++++----
+ 1 file changed, 17 insertions(+), 4 deletions(-)
+
+diff --git a/drivers/block/loop.c b/drivers/block/loop.c
+index 0c5aeab4d23a..a63da9e07341 100644
+--- a/drivers/block/loop.c
++++ b/drivers/block/loop.c
+@@ -1090,16 +1090,12 @@ static int __loop_clr_fd(struct loop_device *lo, bool release)
+ kobject_uevent(&disk_to_dev(bdev->bd_disk)->kobj, KOBJ_CHANGE);
+ }
+ mapping_set_gfp_mask(filp->f_mapping, gfp);
+- lo->lo_state = Lo_unbound;
+ /* This is safe: open() is still holding a reference. */
+ module_put(THIS_MODULE);
+ blk_mq_unfreeze_queue(lo->lo_queue);
+
+ partscan = lo->lo_flags & LO_FLAGS_PARTSCAN && bdev;
+ lo_number = lo->lo_number;
+- lo->lo_flags = 0;
+- if (!part_shift)
+- lo->lo_disk->flags |= GENHD_FL_NO_PART_SCAN;
+ loop_unprepare_queue(lo);
+ out_unlock:
+ mutex_unlock(&loop_ctl_mutex);
+@@ -1121,6 +1117,23 @@ out_unlock:
+ /* Device is gone, no point in returning error */
+ err = 0;
+ }
++
++ /*
++ * lo->lo_state is set to Lo_unbound here after above partscan has
++ * finished.
++ *
++ * There cannot be anybody else entering __loop_clr_fd() as
++ * lo->lo_backing_file is already cleared and Lo_rundown state
++ * protects us from all the other places trying to change the 'lo'
++ * device.
++ */
++ mutex_lock(&loop_ctl_mutex);
++ lo->lo_flags = 0;
++ if (!part_shift)
++ lo->lo_disk->flags |= GENHD_FL_NO_PART_SCAN;
++ lo->lo_state = Lo_unbound;
++ mutex_unlock(&loop_ctl_mutex);
++
+ /*
+ * Need not hold loop_ctl_mutex to fput backing file.
+ * Calling fput holding loop_ctl_mutex triggers a circular
+--
+2.19.1
+
--- /dev/null
+From 6622a78a6f6d429206078a851e5cdbcabf175513 Mon Sep 17 00:00:00 2001
+From: Akinobu Mita <akinobu.mita@gmail.com>
+Date: Tue, 15 Jan 2019 12:05:41 -0200
+Subject: media: mt9m111: set initial frame size other than 0x0
+
+[ Upstream commit 29856308137de1c21eda89411695f4fc6e9780ff ]
+
+This driver sets initial frame width and height to 0x0, which is invalid.
+So set it to selection rectangle bounds instead.
+
+This is detected by v4l2-compliance detected.
+
+Cc: Enrico Scholz <enrico.scholz@sigma-chemnitz.de>
+Cc: Michael Grzeschik <m.grzeschik@pengutronix.de>
+Cc: Marco Felsch <m.felsch@pengutronix.de>
+Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
+Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
+Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/media/i2c/mt9m111.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/drivers/media/i2c/mt9m111.c b/drivers/media/i2c/mt9m111.c
+index efda1aa95ca0..7a7d3969af20 100644
+--- a/drivers/media/i2c/mt9m111.c
++++ b/drivers/media/i2c/mt9m111.c
+@@ -1014,6 +1014,8 @@ static int mt9m111_probe(struct i2c_client *client,
+ mt9m111->rect.top = MT9M111_MIN_DARK_ROWS;
+ mt9m111->rect.width = MT9M111_MAX_WIDTH;
+ mt9m111->rect.height = MT9M111_MAX_HEIGHT;
++ mt9m111->width = mt9m111->rect.width;
++ mt9m111->height = mt9m111->rect.height;
+ mt9m111->fmt = &mt9m111_colour_fmts[0];
+ mt9m111->lastpage = -1;
+ mutex_init(&mt9m111->power_lock);
+--
+2.19.1
+
--- /dev/null
+From a56f6506e9d0530cd6da556c3c45c394254074dc Mon Sep 17 00:00:00 2001
+From: Ezequiel Garcia <ezequiel@collabora.com>
+Date: Fri, 8 Feb 2019 11:17:39 -0500
+Subject: media: mtk-jpeg: Correct return type for mem2mem buffer helpers
+
+[ Upstream commit 1b275e4e8b70dbff9850874b30831c1bd8d3c504 ]
+
+Fix the assigned type of mem2mem buffer handling API.
+Namely, these functions:
+
+ v4l2_m2m_next_buf
+ v4l2_m2m_last_buf
+ v4l2_m2m_buf_remove
+ v4l2_m2m_next_src_buf
+ v4l2_m2m_next_dst_buf
+ v4l2_m2m_last_src_buf
+ v4l2_m2m_last_dst_buf
+ v4l2_m2m_src_buf_remove
+ v4l2_m2m_dst_buf_remove
+
+return a struct vb2_v4l2_buffer, and not a struct vb2_buffer.
+
+Fixing this is necessary to fix the mem2mem buffer handling API,
+changing the return to the correct struct vb2_v4l2_buffer instead
+of a void pointer.
+
+Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
+Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
+Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ .../media/platform/mtk-jpeg/mtk_jpeg_core.c | 40 +++++++++----------
+ 1 file changed, 20 insertions(+), 20 deletions(-)
+
+diff --git a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
+index 4f24da8afecc..11429633b2fb 100644
+--- a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
++++ b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
+@@ -702,7 +702,7 @@ end:
+ v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, to_vb2_v4l2_buffer(vb));
+ }
+
+-static void *mtk_jpeg_buf_remove(struct mtk_jpeg_ctx *ctx,
++static struct vb2_v4l2_buffer *mtk_jpeg_buf_remove(struct mtk_jpeg_ctx *ctx,
+ enum v4l2_buf_type type)
+ {
+ if (V4L2_TYPE_IS_OUTPUT(type))
+@@ -714,7 +714,7 @@ static void *mtk_jpeg_buf_remove(struct mtk_jpeg_ctx *ctx,
+ static int mtk_jpeg_start_streaming(struct vb2_queue *q, unsigned int count)
+ {
+ struct mtk_jpeg_ctx *ctx = vb2_get_drv_priv(q);
+- struct vb2_buffer *vb;
++ struct vb2_v4l2_buffer *vb;
+ int ret = 0;
+
+ ret = pm_runtime_get_sync(ctx->jpeg->dev);
+@@ -724,14 +724,14 @@ static int mtk_jpeg_start_streaming(struct vb2_queue *q, unsigned int count)
+ return 0;
+ err:
+ while ((vb = mtk_jpeg_buf_remove(ctx, q->type)))
+- v4l2_m2m_buf_done(to_vb2_v4l2_buffer(vb), VB2_BUF_STATE_QUEUED);
++ v4l2_m2m_buf_done(vb, VB2_BUF_STATE_QUEUED);
+ return ret;
+ }
+
+ static void mtk_jpeg_stop_streaming(struct vb2_queue *q)
+ {
+ struct mtk_jpeg_ctx *ctx = vb2_get_drv_priv(q);
+- struct vb2_buffer *vb;
++ struct vb2_v4l2_buffer *vb;
+
+ /*
+ * STREAMOFF is an acknowledgment for source change event.
+@@ -743,7 +743,7 @@ static void mtk_jpeg_stop_streaming(struct vb2_queue *q)
+ struct mtk_jpeg_src_buf *src_buf;
+
+ vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+- src_buf = mtk_jpeg_vb2_to_srcbuf(vb);
++ src_buf = mtk_jpeg_vb2_to_srcbuf(&vb->vb2_buf);
+ mtk_jpeg_set_queue_data(ctx, &src_buf->dec_param);
+ ctx->state = MTK_JPEG_RUNNING;
+ } else if (V4L2_TYPE_IS_OUTPUT(q->type)) {
+@@ -751,7 +751,7 @@ static void mtk_jpeg_stop_streaming(struct vb2_queue *q)
+ }
+
+ while ((vb = mtk_jpeg_buf_remove(ctx, q->type)))
+- v4l2_m2m_buf_done(to_vb2_v4l2_buffer(vb), VB2_BUF_STATE_ERROR);
++ v4l2_m2m_buf_done(vb, VB2_BUF_STATE_ERROR);
+
+ pm_runtime_put_sync(ctx->jpeg->dev);
+ }
+@@ -807,7 +807,7 @@ static void mtk_jpeg_device_run(void *priv)
+ {
+ struct mtk_jpeg_ctx *ctx = priv;
+ struct mtk_jpeg_dev *jpeg = ctx->jpeg;
+- struct vb2_buffer *src_buf, *dst_buf;
++ struct vb2_v4l2_buffer *src_buf, *dst_buf;
+ enum vb2_buffer_state buf_state = VB2_BUF_STATE_ERROR;
+ unsigned long flags;
+ struct mtk_jpeg_src_buf *jpeg_src_buf;
+@@ -817,11 +817,11 @@ static void mtk_jpeg_device_run(void *priv)
+
+ src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+ dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+- jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(src_buf);
++ jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(&src_buf->vb2_buf);
+
+ if (jpeg_src_buf->flags & MTK_JPEG_BUF_FLAGS_LAST_FRAME) {
+- for (i = 0; i < dst_buf->num_planes; i++)
+- vb2_set_plane_payload(dst_buf, i, 0);
++ for (i = 0; i < dst_buf->vb2_buf.num_planes; i++)
++ vb2_set_plane_payload(&dst_buf->vb2_buf, i, 0);
+ buf_state = VB2_BUF_STATE_DONE;
+ goto dec_end;
+ }
+@@ -833,8 +833,8 @@ static void mtk_jpeg_device_run(void *priv)
+ return;
+ }
+
+- mtk_jpeg_set_dec_src(ctx, src_buf, &bs);
+- if (mtk_jpeg_set_dec_dst(ctx, &jpeg_src_buf->dec_param, dst_buf, &fb))
++ mtk_jpeg_set_dec_src(ctx, &src_buf->vb2_buf, &bs);
++ if (mtk_jpeg_set_dec_dst(ctx, &jpeg_src_buf->dec_param, &dst_buf->vb2_buf, &fb))
+ goto dec_end;
+
+ spin_lock_irqsave(&jpeg->hw_lock, flags);
+@@ -849,8 +849,8 @@ static void mtk_jpeg_device_run(void *priv)
+ dec_end:
+ v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
+ v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
+- v4l2_m2m_buf_done(to_vb2_v4l2_buffer(src_buf), buf_state);
+- v4l2_m2m_buf_done(to_vb2_v4l2_buffer(dst_buf), buf_state);
++ v4l2_m2m_buf_done(src_buf, buf_state);
++ v4l2_m2m_buf_done(dst_buf, buf_state);
+ v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
+ }
+
+@@ -921,7 +921,7 @@ static irqreturn_t mtk_jpeg_dec_irq(int irq, void *priv)
+ {
+ struct mtk_jpeg_dev *jpeg = priv;
+ struct mtk_jpeg_ctx *ctx;
+- struct vb2_buffer *src_buf, *dst_buf;
++ struct vb2_v4l2_buffer *src_buf, *dst_buf;
+ struct mtk_jpeg_src_buf *jpeg_src_buf;
+ enum vb2_buffer_state buf_state = VB2_BUF_STATE_ERROR;
+ u32 dec_irq_ret;
+@@ -938,7 +938,7 @@ static irqreturn_t mtk_jpeg_dec_irq(int irq, void *priv)
+
+ src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
+ dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
+- jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(src_buf);
++ jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(&src_buf->vb2_buf);
+
+ if (dec_irq_ret >= MTK_JPEG_DEC_RESULT_UNDERFLOW)
+ mtk_jpeg_dec_reset(jpeg->dec_reg_base);
+@@ -948,15 +948,15 @@ static irqreturn_t mtk_jpeg_dec_irq(int irq, void *priv)
+ goto dec_end;
+ }
+
+- for (i = 0; i < dst_buf->num_planes; i++)
+- vb2_set_plane_payload(dst_buf, i,
++ for (i = 0; i < dst_buf->vb2_buf.num_planes; i++)
++ vb2_set_plane_payload(&dst_buf->vb2_buf, i,
+ jpeg_src_buf->dec_param.comp_size[i]);
+
+ buf_state = VB2_BUF_STATE_DONE;
+
+ dec_end:
+- v4l2_m2m_buf_done(to_vb2_v4l2_buffer(src_buf), buf_state);
+- v4l2_m2m_buf_done(to_vb2_v4l2_buffer(dst_buf), buf_state);
++ v4l2_m2m_buf_done(src_buf, buf_state);
++ v4l2_m2m_buf_done(dst_buf, buf_state);
+ v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
+ return IRQ_HANDLED;
+ }
+--
+2.19.1
+
--- /dev/null
+From 0a4c97552eb4c52a16517b8a99aae9ae844ae4e4 Mon Sep 17 00:00:00 2001
+From: Ezequiel Garcia <ezequiel@collabora.com>
+Date: Fri, 8 Feb 2019 11:17:42 -0500
+Subject: media: mx2_emmaprp: Correct return type for mem2mem buffer helpers
+
+[ Upstream commit 8d20dcefe471763f23ad538369ec65b51993ffff ]
+
+Fix the assigned type of mem2mem buffer handling API.
+Namely, these functions:
+
+ v4l2_m2m_next_buf
+ v4l2_m2m_last_buf
+ v4l2_m2m_buf_remove
+ v4l2_m2m_next_src_buf
+ v4l2_m2m_next_dst_buf
+ v4l2_m2m_last_src_buf
+ v4l2_m2m_last_dst_buf
+ v4l2_m2m_src_buf_remove
+ v4l2_m2m_dst_buf_remove
+
+return a struct vb2_v4l2_buffer, and not a struct vb2_buffer.
+
+Fixing this is necessary to fix the mem2mem buffer handling API,
+changing the return to the correct struct vb2_v4l2_buffer instead
+of a void pointer.
+
+Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
+Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
+Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/media/platform/mx2_emmaprp.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/media/platform/mx2_emmaprp.c b/drivers/media/platform/mx2_emmaprp.c
+index 64195c4ddeaf..419e1cb10dc6 100644
+--- a/drivers/media/platform/mx2_emmaprp.c
++++ b/drivers/media/platform/mx2_emmaprp.c
+@@ -274,7 +274,7 @@ static void emmaprp_device_run(void *priv)
+ {
+ struct emmaprp_ctx *ctx = priv;
+ struct emmaprp_q_data *s_q_data, *d_q_data;
+- struct vb2_buffer *src_buf, *dst_buf;
++ struct vb2_v4l2_buffer *src_buf, *dst_buf;
+ struct emmaprp_dev *pcdev = ctx->dev;
+ unsigned int s_width, s_height;
+ unsigned int d_width, d_height;
+@@ -294,8 +294,8 @@ static void emmaprp_device_run(void *priv)
+ d_height = d_q_data->height;
+ d_size = d_width * d_height;
+
+- p_in = vb2_dma_contig_plane_dma_addr(src_buf, 0);
+- p_out = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
++ p_in = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
++ p_out = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
+ if (!p_in || !p_out) {
+ v4l2_err(&pcdev->v4l2_dev,
+ "Acquiring kernel pointers to buffers failed\n");
+--
+2.19.1
+
--- /dev/null
+From ca6cf64a68b93bef63167ef8692efedcc1d6769c Mon Sep 17 00:00:00 2001
+From: Akinobu Mita <akinobu.mita@gmail.com>
+Date: Sun, 17 Feb 2019 10:17:47 -0500
+Subject: media: ov7740: fix runtime pm initialization
+
+[ Upstream commit 12aceee1f412c3ddc7750155fec06c906f14ab51 ]
+
+The runtime PM of this device is enabled after v4l2_ctrl_handler_setup(),
+and this makes this device's runtime PM usage count a negative value.
+
+The ov7740_set_ctrl() tries to do something only if the device's runtime
+PM usage counter is nonzero.
+
+ov7740_set_ctrl()
+{
+ if (!pm_runtime_get_if_in_use(&client->dev))
+ return 0;
+
+ <do something>;
+
+ pm_runtime_put(&client->dev);
+
+ return ret;
+}
+
+However, the ov7740_set_ctrl() is called by v4l2_ctrl_handler_setup()
+while the runtime PM of this device is not yet enabled. In this case,
+the pm_runtime_get_if_in_use() returns -EINVAL (!= 0).
+
+Therefore we can't bail out of this function and the usage count is
+decreased by pm_runtime_put() without increment.
+
+This fixes this problem by enabling the runtime PM of this device before
+v4l2_ctrl_handler_setup() so that the ov7740_set_ctrl() is always called
+when the runtime PM is enabled.
+
+Cc: Wenyou Yang <wenyou.yang@microchip.com>
+Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
+Tested-by: Eugen Hristev <eugen.hristev@microchip.com>
+Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
+Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/media/i2c/ov7740.c | 7 +++++--
+ 1 file changed, 5 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/media/i2c/ov7740.c b/drivers/media/i2c/ov7740.c
+index 605f3e25ad82..f5a1ee90a6c5 100644
+--- a/drivers/media/i2c/ov7740.c
++++ b/drivers/media/i2c/ov7740.c
+@@ -1101,6 +1101,9 @@ static int ov7740_probe(struct i2c_client *client,
+ if (ret)
+ return ret;
+
++ pm_runtime_set_active(&client->dev);
++ pm_runtime_enable(&client->dev);
++
+ ret = ov7740_detect(ov7740);
+ if (ret)
+ goto error_detect;
+@@ -1123,8 +1126,6 @@ static int ov7740_probe(struct i2c_client *client,
+ if (ret)
+ goto error_async_register;
+
+- pm_runtime_set_active(&client->dev);
+- pm_runtime_enable(&client->dev);
+ pm_runtime_idle(&client->dev);
+
+ return 0;
+@@ -1134,6 +1135,8 @@ error_async_register:
+ error_init_controls:
+ ov7740_free_controls(ov7740);
+ error_detect:
++ pm_runtime_disable(&client->dev);
++ pm_runtime_set_suspended(&client->dev);
+ ov7740_set_power(ov7740, 0);
+ media_entity_cleanup(&ov7740->subdev.entity);
+
+--
+2.19.1
+
--- /dev/null
+From ce5a41d12dd7b451edbfc0345f7cb7932558d615 Mon Sep 17 00:00:00 2001
+From: Steve Longerbeam <slongerbeam@gmail.com>
+Date: Mon, 14 Jan 2019 20:10:19 -0500
+Subject: media: rcar-vin: Allow independent VIN link enablement
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+[ Upstream commit c5ff0edb8e2270a75935c73217fb0de1abd2d910 ]
+
+There is a block of code in rvin_group_link_notify() that prevents
+enabling a link to a VIN node if any entity in the media graph is
+in use. This prevents enabling a VIN link even if there is an in-use
+entity somewhere in the graph that is independent of the link's
+pipeline.
+
+For example, the code block will prevent enabling a link from
+the first rcar-csi2 receiver to a VIN node even if there is an
+enabled link somewhere far upstream on the second independent
+rcar-csi2 receiver pipeline.
+
+If this code block is meant to prevent modifying a link if any entity
+in the graph is actively involved in streaming (because modifying
+the CHSEL register fields can disrupt any/all running streams), then
+the entities stream counts should be checked rather than the use counts.
+
+(There is already such a check in __media_entity_setup_link() that verifies
+the stream_count of the link's source and sink entities are both zero,
+but that is insufficient, since there should be no running streams in
+the entire graph).
+
+Modify the code block to check the entity stream_count instead of the
+use_count (and elaborate on the comment). VIN node links can now be
+enabled even if there are other independent in-use entities that are
+not streaming.
+
+Fixes: c0cc5aef31 ("media: rcar-vin: add link notify for Gen3")
+
+Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
+Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
+Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
+Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/media/platform/rcar-vin/rcar-core.c | 8 ++++++--
+ 1 file changed, 6 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/media/platform/rcar-vin/rcar-core.c b/drivers/media/platform/rcar-vin/rcar-core.c
+index ce09799976ef..e1085e3ab3cc 100644
+--- a/drivers/media/platform/rcar-vin/rcar-core.c
++++ b/drivers/media/platform/rcar-vin/rcar-core.c
+@@ -131,9 +131,13 @@ static int rvin_group_link_notify(struct media_link *link, u32 flags,
+ !is_media_entity_v4l2_video_device(link->sink->entity))
+ return 0;
+
+- /* If any entity is in use don't allow link changes. */
++ /*
++ * Don't allow link changes if any entity in the graph is
++ * streaming, modifying the CHSEL register fields can disrupt
++ * running streams.
++ */
+ media_device_for_each_entity(entity, &group->mdev)
+- if (entity->use_count)
++ if (entity->stream_count)
+ return -EBUSY;
+
+ mutex_lock(&group->lock);
+--
+2.19.1
+
--- /dev/null
+From cb7b2244b032996bf12854f20312ff85bbaea1d2 Mon Sep 17 00:00:00 2001
+From: Ezequiel Garcia <ezequiel@collabora.com>
+Date: Fri, 8 Feb 2019 11:17:43 -0500
+Subject: media: rockchip/rga: Correct return type for mem2mem buffer helpers
+
+[ Upstream commit da2d3a4e4adabc6ccfb100bc9abd58ee9cd6c4b7 ]
+
+Fix the assigned type of mem2mem buffer handling API.
+Namely, these functions:
+
+ v4l2_m2m_next_buf
+ v4l2_m2m_last_buf
+ v4l2_m2m_buf_remove
+ v4l2_m2m_next_src_buf
+ v4l2_m2m_next_dst_buf
+ v4l2_m2m_last_src_buf
+ v4l2_m2m_last_dst_buf
+ v4l2_m2m_src_buf_remove
+ v4l2_m2m_dst_buf_remove
+
+return a struct vb2_v4l2_buffer, and not a struct vb2_buffer.
+
+Fixing this is necessary to fix the mem2mem buffer handling API,
+changing the return to the correct struct vb2_v4l2_buffer instead
+of a void pointer.
+
+Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
+Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
+Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/media/platform/rockchip/rga/rga.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/media/platform/rockchip/rga/rga.c b/drivers/media/platform/rockchip/rga/rga.c
+index ab5a6f95044a..86a76f35a9a1 100644
+--- a/drivers/media/platform/rockchip/rga/rga.c
++++ b/drivers/media/platform/rockchip/rga/rga.c
+@@ -43,7 +43,7 @@ static void device_run(void *prv)
+ {
+ struct rga_ctx *ctx = prv;
+ struct rockchip_rga *rga = ctx->rga;
+- struct vb2_buffer *src, *dst;
++ struct vb2_v4l2_buffer *src, *dst;
+ unsigned long flags;
+
+ spin_lock_irqsave(&rga->ctrl_lock, flags);
+@@ -53,8 +53,8 @@ static void device_run(void *prv)
+ src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+ dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+
+- rga_buf_map(src);
+- rga_buf_map(dst);
++ rga_buf_map(&src->vb2_buf);
++ rga_buf_map(&dst->vb2_buf);
+
+ rga_hw_start(rga);
+
+--
+2.19.1
+
--- /dev/null
+From 8ac99f5afad0f6f74856debf5687a350e8d4b3d3 Mon Sep 17 00:00:00 2001
+From: Ezequiel Garcia <ezequiel@collabora.com>
+Date: Fri, 8 Feb 2019 11:17:44 -0500
+Subject: media: s5p-g2d: Correct return type for mem2mem buffer helpers
+
+[ Upstream commit 30fa627b32230737bc3f678067e2adfecf956987 ]
+
+Fix the assigned type of mem2mem buffer handling API.
+Namely, these functions:
+
+ v4l2_m2m_next_buf
+ v4l2_m2m_last_buf
+ v4l2_m2m_buf_remove
+ v4l2_m2m_next_src_buf
+ v4l2_m2m_next_dst_buf
+ v4l2_m2m_last_src_buf
+ v4l2_m2m_last_dst_buf
+ v4l2_m2m_src_buf_remove
+ v4l2_m2m_dst_buf_remove
+
+return a struct vb2_v4l2_buffer, and not a struct vb2_buffer.
+
+Fixing this is necessary to fix the mem2mem buffer handling API,
+changing the return to the correct struct vb2_v4l2_buffer instead
+of a void pointer.
+
+Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
+Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
+Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/media/platform/s5p-g2d/g2d.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/media/platform/s5p-g2d/g2d.c b/drivers/media/platform/s5p-g2d/g2d.c
+index e901201b6fcc..1f58574d0b96 100644
+--- a/drivers/media/platform/s5p-g2d/g2d.c
++++ b/drivers/media/platform/s5p-g2d/g2d.c
+@@ -487,7 +487,7 @@ static void device_run(void *prv)
+ {
+ struct g2d_ctx *ctx = prv;
+ struct g2d_dev *dev = ctx->dev;
+- struct vb2_buffer *src, *dst;
++ struct vb2_v4l2_buffer *src, *dst;
+ unsigned long flags;
+ u32 cmd = 0;
+
+@@ -502,10 +502,10 @@ static void device_run(void *prv)
+ spin_lock_irqsave(&dev->ctrl_lock, flags);
+
+ g2d_set_src_size(dev, &ctx->in);
+- g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(src, 0));
++ g2d_set_src_addr(dev, vb2_dma_contig_plane_dma_addr(&src->vb2_buf, 0));
+
+ g2d_set_dst_size(dev, &ctx->out);
+- g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(dst, 0));
++ g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(&dst->vb2_buf, 0));
+
+ g2d_set_rop4(dev, ctx->rop);
+ g2d_set_flip(dev, ctx->flip);
+--
+2.19.1
+
--- /dev/null
+From 945da20bc1e3827c514a0c8a22696731c48c5567 Mon Sep 17 00:00:00 2001
+From: Pawe? Chmiel <pawel.mikolaj.chmiel@gmail.com>
+Date: Sat, 29 Dec 2018 10:46:01 -0500
+Subject: media: s5p-jpeg: Check for fmt_ver_flag when doing fmt enumeration
+
+[ Upstream commit 49710c32cd9d6626a77c9f5f978a5f58cb536b35 ]
+
+Previously when doing format enumeration, it was returning all
+ formats supported by driver, even if they're not supported by hw.
+Add missing check for fmt_ver_flag, so it'll be fixed and only those
+ supported by hw will be returned. Similar thing is already done
+ in s5p_jpeg_find_format.
+
+It was found by using v4l2-compliance tool and checking result
+ of VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS test
+and using v4l2-ctl to get list of all supported formats.
+
+Tested on s5pv210-galaxys (Samsung i9000 phone).
+
+Fixes: bb677f3ac434 ("[media] Exynos4 JPEG codec v4l2 driver")
+
+Signed-off-by: Pawe? Chmiel <pawel.mikolaj.chmiel@gmail.com>
+Reviewed-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
+[hverkuil-cisco@xs4all.nl: fix a few alignment issues]
+Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/media/platform/s5p-jpeg/jpeg-core.c | 19 +++++++++++--------
+ 1 file changed, 11 insertions(+), 8 deletions(-)
+
+diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c
+index 29daecf8de7d..350afaa29a62 100644
+--- a/drivers/media/platform/s5p-jpeg/jpeg-core.c
++++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c
+@@ -1293,13 +1293,16 @@ static int s5p_jpeg_querycap(struct file *file, void *priv,
+ return 0;
+ }
+
+-static int enum_fmt(struct s5p_jpeg_fmt *sjpeg_formats, int n,
++static int enum_fmt(struct s5p_jpeg_ctx *ctx,
++ struct s5p_jpeg_fmt *sjpeg_formats, int n,
+ struct v4l2_fmtdesc *f, u32 type)
+ {
+ int i, num = 0;
++ unsigned int fmt_ver_flag = ctx->jpeg->variant->fmt_ver_flag;
+
+ for (i = 0; i < n; ++i) {
+- if (sjpeg_formats[i].flags & type) {
++ if (sjpeg_formats[i].flags & type &&
++ sjpeg_formats[i].flags & fmt_ver_flag) {
+ /* index-th format of type type found ? */
+ if (num == f->index)
+ break;
+@@ -1326,11 +1329,11 @@ static int s5p_jpeg_enum_fmt_vid_cap(struct file *file, void *priv,
+ struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv);
+
+ if (ctx->mode == S5P_JPEG_ENCODE)
+- return enum_fmt(sjpeg_formats, SJPEG_NUM_FORMATS, f,
++ return enum_fmt(ctx, sjpeg_formats, SJPEG_NUM_FORMATS, f,
+ SJPEG_FMT_FLAG_ENC_CAPTURE);
+
+- return enum_fmt(sjpeg_formats, SJPEG_NUM_FORMATS, f,
+- SJPEG_FMT_FLAG_DEC_CAPTURE);
++ return enum_fmt(ctx, sjpeg_formats, SJPEG_NUM_FORMATS, f,
++ SJPEG_FMT_FLAG_DEC_CAPTURE);
+ }
+
+ static int s5p_jpeg_enum_fmt_vid_out(struct file *file, void *priv,
+@@ -1339,11 +1342,11 @@ static int s5p_jpeg_enum_fmt_vid_out(struct file *file, void *priv,
+ struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv);
+
+ if (ctx->mode == S5P_JPEG_ENCODE)
+- return enum_fmt(sjpeg_formats, SJPEG_NUM_FORMATS, f,
++ return enum_fmt(ctx, sjpeg_formats, SJPEG_NUM_FORMATS, f,
+ SJPEG_FMT_FLAG_ENC_OUTPUT);
+
+- return enum_fmt(sjpeg_formats, SJPEG_NUM_FORMATS, f,
+- SJPEG_FMT_FLAG_DEC_OUTPUT);
++ return enum_fmt(ctx, sjpeg_formats, SJPEG_NUM_FORMATS, f,
++ SJPEG_FMT_FLAG_DEC_OUTPUT);
+ }
+
+ static struct s5p_jpeg_q_data *get_q_data(struct s5p_jpeg_ctx *ctx,
+--
+2.19.1
+
--- /dev/null
+From 4454b8c18e893d44abbee9bb47a3a29a0af5a935 Mon Sep 17 00:00:00 2001
+From: Ezequiel Garcia <ezequiel@collabora.com>
+Date: Fri, 8 Feb 2019 11:17:45 -0500
+Subject: media: s5p-jpeg: Correct return type for mem2mem buffer helpers
+
+[ Upstream commit 4a88f89885c7cf65c62793f385261a6e3315178a ]
+
+Fix the assigned type of mem2mem buffer handling API.
+Namely, these functions:
+
+ v4l2_m2m_next_buf
+ v4l2_m2m_last_buf
+ v4l2_m2m_buf_remove
+ v4l2_m2m_next_src_buf
+ v4l2_m2m_next_dst_buf
+ v4l2_m2m_last_src_buf
+ v4l2_m2m_last_dst_buf
+ v4l2_m2m_src_buf_remove
+ v4l2_m2m_dst_buf_remove
+
+return a struct vb2_v4l2_buffer, and not a struct vb2_buffer.
+
+Fixing this is necessary to fix the mem2mem buffer handling API,
+changing the return to the correct struct vb2_v4l2_buffer instead
+of a void pointer.
+
+Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
+Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
+Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/media/platform/s5p-jpeg/jpeg-core.c | 38 ++++++++++-----------
+ 1 file changed, 19 insertions(+), 19 deletions(-)
+
+diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c
+index 04fd2e0493c0..29daecf8de7d 100644
+--- a/drivers/media/platform/s5p-jpeg/jpeg-core.c
++++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c
+@@ -793,14 +793,14 @@ static void skip(struct s5p_jpeg_buffer *buf, long len);
+ static void exynos4_jpeg_parse_decode_h_tbl(struct s5p_jpeg_ctx *ctx)
+ {
+ struct s5p_jpeg *jpeg = ctx->jpeg;
+- struct vb2_buffer *vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
++ struct vb2_v4l2_buffer *vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+ struct s5p_jpeg_buffer jpeg_buffer;
+ unsigned int word;
+ int c, x, components;
+
+ jpeg_buffer.size = 2; /* Ls */
+ jpeg_buffer.data =
+- (unsigned long)vb2_plane_vaddr(vb, 0) + ctx->out_q.sos + 2;
++ (unsigned long)vb2_plane_vaddr(&vb->vb2_buf, 0) + ctx->out_q.sos + 2;
+ jpeg_buffer.curr = 0;
+
+ word = 0;
+@@ -830,14 +830,14 @@ static void exynos4_jpeg_parse_decode_h_tbl(struct s5p_jpeg_ctx *ctx)
+ static void exynos4_jpeg_parse_huff_tbl(struct s5p_jpeg_ctx *ctx)
+ {
+ struct s5p_jpeg *jpeg = ctx->jpeg;
+- struct vb2_buffer *vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
++ struct vb2_v4l2_buffer *vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+ struct s5p_jpeg_buffer jpeg_buffer;
+ unsigned int word;
+ int c, i, n, j;
+
+ for (j = 0; j < ctx->out_q.dht.n; ++j) {
+ jpeg_buffer.size = ctx->out_q.dht.len[j];
+- jpeg_buffer.data = (unsigned long)vb2_plane_vaddr(vb, 0) +
++ jpeg_buffer.data = (unsigned long)vb2_plane_vaddr(&vb->vb2_buf, 0) +
+ ctx->out_q.dht.marker[j];
+ jpeg_buffer.curr = 0;
+
+@@ -889,13 +889,13 @@ static void exynos4_jpeg_parse_huff_tbl(struct s5p_jpeg_ctx *ctx)
+ static void exynos4_jpeg_parse_decode_q_tbl(struct s5p_jpeg_ctx *ctx)
+ {
+ struct s5p_jpeg *jpeg = ctx->jpeg;
+- struct vb2_buffer *vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
++ struct vb2_v4l2_buffer *vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+ struct s5p_jpeg_buffer jpeg_buffer;
+ int c, x, components;
+
+ jpeg_buffer.size = ctx->out_q.sof_len;
+ jpeg_buffer.data =
+- (unsigned long)vb2_plane_vaddr(vb, 0) + ctx->out_q.sof;
++ (unsigned long)vb2_plane_vaddr(&vb->vb2_buf, 0) + ctx->out_q.sof;
+ jpeg_buffer.curr = 0;
+
+ skip(&jpeg_buffer, 5); /* P, Y, X */
+@@ -920,14 +920,14 @@ static void exynos4_jpeg_parse_decode_q_tbl(struct s5p_jpeg_ctx *ctx)
+ static void exynos4_jpeg_parse_q_tbl(struct s5p_jpeg_ctx *ctx)
+ {
+ struct s5p_jpeg *jpeg = ctx->jpeg;
+- struct vb2_buffer *vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
++ struct vb2_v4l2_buffer *vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+ struct s5p_jpeg_buffer jpeg_buffer;
+ unsigned int word;
+ int c, i, j;
+
+ for (j = 0; j < ctx->out_q.dqt.n; ++j) {
+ jpeg_buffer.size = ctx->out_q.dqt.len[j];
+- jpeg_buffer.data = (unsigned long)vb2_plane_vaddr(vb, 0) +
++ jpeg_buffer.data = (unsigned long)vb2_plane_vaddr(&vb->vb2_buf, 0) +
+ ctx->out_q.dqt.marker[j];
+ jpeg_buffer.curr = 0;
+
+@@ -2072,15 +2072,15 @@ static void s5p_jpeg_device_run(void *priv)
+ {
+ struct s5p_jpeg_ctx *ctx = priv;
+ struct s5p_jpeg *jpeg = ctx->jpeg;
+- struct vb2_buffer *src_buf, *dst_buf;
++ struct vb2_v4l2_buffer *src_buf, *dst_buf;
+ unsigned long src_addr, dst_addr, flags;
+
+ spin_lock_irqsave(&ctx->jpeg->slock, flags);
+
+ src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+ dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+- src_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
+- dst_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
++ src_addr = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
++ dst_addr = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
+
+ s5p_jpeg_reset(jpeg->regs);
+ s5p_jpeg_poweron(jpeg->regs);
+@@ -2153,7 +2153,7 @@ static void exynos4_jpeg_set_img_addr(struct s5p_jpeg_ctx *ctx)
+ {
+ struct s5p_jpeg *jpeg = ctx->jpeg;
+ struct s5p_jpeg_fmt *fmt;
+- struct vb2_buffer *vb;
++ struct vb2_v4l2_buffer *vb;
+ struct s5p_jpeg_addr jpeg_addr = {};
+ u32 pix_size, padding_bytes = 0;
+
+@@ -2172,7 +2172,7 @@ static void exynos4_jpeg_set_img_addr(struct s5p_jpeg_ctx *ctx)
+ vb = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+ }
+
+- jpeg_addr.y = vb2_dma_contig_plane_dma_addr(vb, 0);
++ jpeg_addr.y = vb2_dma_contig_plane_dma_addr(&vb->vb2_buf, 0);
+
+ if (fmt->colplanes == 2) {
+ jpeg_addr.cb = jpeg_addr.y + pix_size - padding_bytes;
+@@ -2190,7 +2190,7 @@ static void exynos4_jpeg_set_img_addr(struct s5p_jpeg_ctx *ctx)
+ static void exynos4_jpeg_set_jpeg_addr(struct s5p_jpeg_ctx *ctx)
+ {
+ struct s5p_jpeg *jpeg = ctx->jpeg;
+- struct vb2_buffer *vb;
++ struct vb2_v4l2_buffer *vb;
+ unsigned int jpeg_addr = 0;
+
+ if (ctx->mode == S5P_JPEG_ENCODE)
+@@ -2198,7 +2198,7 @@ static void exynos4_jpeg_set_jpeg_addr(struct s5p_jpeg_ctx *ctx)
+ else
+ vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+
+- jpeg_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
++ jpeg_addr = vb2_dma_contig_plane_dma_addr(&vb->vb2_buf, 0);
+ if (jpeg->variant->version == SJPEG_EXYNOS5433 &&
+ ctx->mode == S5P_JPEG_DECODE)
+ jpeg_addr += ctx->out_q.sos;
+@@ -2314,7 +2314,7 @@ static void exynos3250_jpeg_set_img_addr(struct s5p_jpeg_ctx *ctx)
+ {
+ struct s5p_jpeg *jpeg = ctx->jpeg;
+ struct s5p_jpeg_fmt *fmt;
+- struct vb2_buffer *vb;
++ struct vb2_v4l2_buffer *vb;
+ struct s5p_jpeg_addr jpeg_addr = {};
+ u32 pix_size;
+
+@@ -2328,7 +2328,7 @@ static void exynos3250_jpeg_set_img_addr(struct s5p_jpeg_ctx *ctx)
+ fmt = ctx->cap_q.fmt;
+ }
+
+- jpeg_addr.y = vb2_dma_contig_plane_dma_addr(vb, 0);
++ jpeg_addr.y = vb2_dma_contig_plane_dma_addr(&vb->vb2_buf, 0);
+
+ if (fmt->colplanes == 2) {
+ jpeg_addr.cb = jpeg_addr.y + pix_size;
+@@ -2346,7 +2346,7 @@ static void exynos3250_jpeg_set_img_addr(struct s5p_jpeg_ctx *ctx)
+ static void exynos3250_jpeg_set_jpeg_addr(struct s5p_jpeg_ctx *ctx)
+ {
+ struct s5p_jpeg *jpeg = ctx->jpeg;
+- struct vb2_buffer *vb;
++ struct vb2_v4l2_buffer *vb;
+ unsigned int jpeg_addr = 0;
+
+ if (ctx->mode == S5P_JPEG_ENCODE)
+@@ -2354,7 +2354,7 @@ static void exynos3250_jpeg_set_jpeg_addr(struct s5p_jpeg_ctx *ctx)
+ else
+ vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+
+- jpeg_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
++ jpeg_addr = vb2_dma_contig_plane_dma_addr(&vb->vb2_buf, 0);
+ exynos3250_jpeg_jpgadr(jpeg->regs, jpeg_addr);
+ }
+
+--
+2.19.1
+
--- /dev/null
+From 1a2fc6d287eba48fa9eb62adb9d07825e360ea87 Mon Sep 17 00:00:00 2001
+From: Ezequiel Garcia <ezequiel@collabora.com>
+Date: Fri, 8 Feb 2019 11:17:46 -0500
+Subject: media: sh_veu: Correct return type for mem2mem buffer helpers
+
+[ Upstream commit 43c145195c7fc3025ee7ecfc67112ac1c82af7c2 ]
+
+Fix the assigned type of mem2mem buffer handling API.
+Namely, these functions:
+
+ v4l2_m2m_next_buf
+ v4l2_m2m_last_buf
+ v4l2_m2m_buf_remove
+ v4l2_m2m_next_src_buf
+ v4l2_m2m_next_dst_buf
+ v4l2_m2m_last_src_buf
+ v4l2_m2m_last_dst_buf
+ v4l2_m2m_src_buf_remove
+ v4l2_m2m_dst_buf_remove
+
+return a struct vb2_v4l2_buffer, and not a struct vb2_buffer.
+
+Fixing this is necessary to fix the mem2mem buffer handling API,
+changing the return to the correct struct vb2_v4l2_buffer instead
+of a void pointer.
+
+Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
+Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
+Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/media/platform/sh_veu.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/media/platform/sh_veu.c b/drivers/media/platform/sh_veu.c
+index 1d274c64de09..03ee9839a03e 100644
+--- a/drivers/media/platform/sh_veu.c
++++ b/drivers/media/platform/sh_veu.c
+@@ -273,13 +273,13 @@ static void sh_veu_process(struct sh_veu_dev *veu,
+ static void sh_veu_device_run(void *priv)
+ {
+ struct sh_veu_dev *veu = priv;
+- struct vb2_buffer *src_buf, *dst_buf;
++ struct vb2_v4l2_buffer *src_buf, *dst_buf;
+
+ src_buf = v4l2_m2m_next_src_buf(veu->m2m_ctx);
+ dst_buf = v4l2_m2m_next_dst_buf(veu->m2m_ctx);
+
+ if (src_buf && dst_buf)
+- sh_veu_process(veu, src_buf, dst_buf);
++ sh_veu_process(veu, &src_buf->vb2_buf, &dst_buf->vb2_buf);
+ }
+
+ /* ========== video ioctls ========== */
+--
+2.19.1
+
--- /dev/null
+From d34254ad2cbc69c7b0ff31efe733efbf60401356 Mon Sep 17 00:00:00 2001
+From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
+Date: Tue, 5 Mar 2019 15:46:47 -0800
+Subject: memcg: killed threads should not invoke memcg OOM killer
+
+[ Upstream commit 7775face207922ea62a4e96b9cd45abfdc7b9840 ]
+
+If a memory cgroup contains a single process with many threads
+(including different process group sharing the mm) then it is possible
+to trigger a race when the oom killer complains that there are no oom
+elible tasks and complain into the log which is both annoying and
+confusing because there is no actual problem. The race looks as
+follows:
+
+P1 oom_reaper P2
+try_charge try_charge
+ mem_cgroup_out_of_memory
+ mutex_lock(oom_lock)
+ out_of_memory
+ oom_kill_process(P1,P2)
+ wake_oom_reaper
+ mutex_unlock(oom_lock)
+ oom_reap_task
+ mutex_lock(oom_lock)
+ select_bad_process # no victim
+
+The problem is more visible with many threads.
+
+Fix this by checking for fatal_signal_pending from
+mem_cgroup_out_of_memory when the oom_lock is already held.
+
+The oom bypass is safe because we do the same early in the try_charge
+path already. The situation migh have changed in the mean time. It
+should be safe to check for fatal_signal_pending and tsk_is_oom_victim
+but for a better code readability abstract the current charge bypass
+condition into should_force_charge and reuse it from that path. "
+
+Link: http://lkml.kernel.org/r/01370f70-e1f6-ebe4-b95e-0df21a0bc15e@i-love.sakura.ne.jp
+Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
+Acked-by: Michal Hocko <mhocko@suse.com>
+Acked-by: Johannes Weiner <hannes@cmpxchg.org>
+Cc: David Rientjes <rientjes@google.com>
+Cc: Kirill Tkhai <ktkhai@virtuozzo.com>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ mm/memcontrol.c | 19 ++++++++++++++-----
+ 1 file changed, 14 insertions(+), 5 deletions(-)
+
+diff --git a/mm/memcontrol.c b/mm/memcontrol.c
+index 9518aefd8cbb..7c712c4565e6 100644
+--- a/mm/memcontrol.c
++++ b/mm/memcontrol.c
+@@ -248,6 +248,12 @@ enum res_type {
+ iter != NULL; \
+ iter = mem_cgroup_iter(NULL, iter, NULL))
+
++static inline bool should_force_charge(void)
++{
++ return tsk_is_oom_victim(current) || fatal_signal_pending(current) ||
++ (current->flags & PF_EXITING);
++}
++
+ /* Some nice accessors for the vmpressure. */
+ struct vmpressure *memcg_to_vmpressure(struct mem_cgroup *memcg)
+ {
+@@ -1382,8 +1388,13 @@ static bool mem_cgroup_out_of_memory(struct mem_cgroup *memcg, gfp_t gfp_mask,
+ };
+ bool ret;
+
+- mutex_lock(&oom_lock);
+- ret = out_of_memory(&oc);
++ if (mutex_lock_killable(&oom_lock))
++ return true;
++ /*
++ * A few threads which were not waiting at mutex_lock_killable() can
++ * fail to bail out. Therefore, check again after holding oom_lock.
++ */
++ ret = should_force_charge() || out_of_memory(&oc);
+ mutex_unlock(&oom_lock);
+ return ret;
+ }
+@@ -2200,9 +2211,7 @@ retry:
+ * bypass the last charges so that they can exit quickly and
+ * free their memory.
+ */
+- if (unlikely(tsk_is_oom_victim(current) ||
+- fatal_signal_pending(current) ||
+- current->flags & PF_EXITING))
++ if (unlikely(should_force_charge()))
+ goto force;
+
+ /*
+--
+2.19.1
+
--- /dev/null
+From 73e218c7b732e510ad5574d2934430e599349b7c Mon Sep 17 00:00:00 2001
+From: Florian Fainelli <f.fainelli@gmail.com>
+Date: Thu, 21 Feb 2019 20:09:26 -0800
+Subject: mlxsw: spectrum: Avoid -Wformat-truncation warnings
+
+[ Upstream commit ab2c4e2581ad32c28627235ff0ae8c5a5ea6899f ]
+
+Give precision identifiers to the two snprintf() formatting the priority
+and TC strings to avoid producing these two warnings:
+
+drivers/net/ethernet/mellanox/mlxsw/spectrum.c: In function
+'mlxsw_sp_port_get_prio_strings':
+drivers/net/ethernet/mellanox/mlxsw/spectrum.c:2132:37: warning: '%d'
+directive output may be truncated writing between 1 and 3 bytes into a
+region of size between 0 and 31 [-Wformat-truncation=]
+ snprintf(*p, ETH_GSTRING_LEN, "%s_%d",
+ ^~
+drivers/net/ethernet/mellanox/mlxsw/spectrum.c:2132:3: note: 'snprintf'
+output between 3 and 36 bytes into a destination of size 32
+ snprintf(*p, ETH_GSTRING_LEN, "%s_%d",
+ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ mlxsw_sp_port_hw_prio_stats[i].str, prio);
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+drivers/net/ethernet/mellanox/mlxsw/spectrum.c: In function
+'mlxsw_sp_port_get_tc_strings':
+drivers/net/ethernet/mellanox/mlxsw/spectrum.c:2143:37: warning: '%d'
+directive output may be truncated writing between 1 and 11 bytes into a
+region of size between 0 and 31 [-Wformat-truncation=]
+ snprintf(*p, ETH_GSTRING_LEN, "%s_%d",
+ ^~
+drivers/net/ethernet/mellanox/mlxsw/spectrum.c:2143:3: note: 'snprintf'
+output between 3 and 44 bytes into a destination of size 32
+ snprintf(*p, ETH_GSTRING_LEN, "%s_%d",
+ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ mlxsw_sp_port_hw_tc_stats[i].str, tc);
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+Reviewed-by: Ido Schimmel <idosch@mellanox.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+index a12b5710891e..f9bef030ee05 100644
+--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
++++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+@@ -1988,7 +1988,7 @@ static void mlxsw_sp_port_get_prio_strings(u8 **p, int prio)
+ int i;
+
+ for (i = 0; i < MLXSW_SP_PORT_HW_PRIO_STATS_LEN; i++) {
+- snprintf(*p, ETH_GSTRING_LEN, "%s_%d",
++ snprintf(*p, ETH_GSTRING_LEN, "%.29s_%.1d",
+ mlxsw_sp_port_hw_prio_stats[i].str, prio);
+ *p += ETH_GSTRING_LEN;
+ }
+@@ -1999,7 +1999,7 @@ static void mlxsw_sp_port_get_tc_strings(u8 **p, int tc)
+ int i;
+
+ for (i = 0; i < MLXSW_SP_PORT_HW_TC_STATS_LEN; i++) {
+- snprintf(*p, ETH_GSTRING_LEN, "%s_%d",
++ snprintf(*p, ETH_GSTRING_LEN, "%.29s_%.1d",
+ mlxsw_sp_port_hw_tc_stats[i].str, tc);
+ *p += ETH_GSTRING_LEN;
+ }
+--
+2.19.1
+
--- /dev/null
+From b211c86e963bde725f3d805d2ca00edf61db544a Mon Sep 17 00:00:00 2001
+From: Peng Fan <peng.fan@nxp.com>
+Date: Tue, 5 Mar 2019 15:49:50 -0800
+Subject: mm/cma.c: cma_declare_contiguous: correct err handling
+
+[ Upstream commit 0d3bd18a5efd66097ef58622b898d3139790aa9d ]
+
+In case cma_init_reserved_mem failed, need to free the memblock
+allocated by memblock_reserve or memblock_alloc_range.
+
+Quote Catalin's comments:
+ https://lkml.org/lkml/2019/2/26/482
+
+Kmemleak is supposed to work with the memblock_{alloc,free} pair and it
+ignores the memblock_reserve() as a memblock_alloc() implementation
+detail. It is, however, tolerant to memblock_free() being called on
+a sub-range or just a different range from a previous memblock_alloc().
+So the original patch looks fine to me. FWIW:
+
+Link: http://lkml.kernel.org/r/20190227144631.16708-1-peng.fan@nxp.com
+Signed-off-by: Peng Fan <peng.fan@nxp.com>
+Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
+Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
+Cc: Laura Abbott <labbott@redhat.com>
+Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
+Cc: Michal Hocko <mhocko@suse.com>
+Cc: Vlastimil Babka <vbabka@suse.cz>
+Cc: Marek Szyprowski <m.szyprowski@samsung.com>
+Cc: Andrey Konovalov <andreyknvl@google.com>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ mm/cma.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/mm/cma.c b/mm/cma.c
+index 4cb76121a3ab..bfe9f5397165 100644
+--- a/mm/cma.c
++++ b/mm/cma.c
+@@ -353,12 +353,14 @@ int __init cma_declare_contiguous(phys_addr_t base,
+
+ ret = cma_init_reserved_mem(base, size, order_per_bit, name, res_cma);
+ if (ret)
+- goto err;
++ goto free_mem;
+
+ pr_info("Reserved %ld MiB at %pa\n", (unsigned long)size / SZ_1M,
+ &base);
+ return 0;
+
++free_mem:
++ memblock_free(base, size);
+ err:
+ pr_err("Failed to reserve %ld MiB\n", (unsigned long)size / SZ_1M);
+ return ret;
+--
+2.19.1
+
--- /dev/null
+From 8cfb33948af6d7e7d48928ca9b063f72b999b152 Mon Sep 17 00:00:00 2001
+From: Vlastimil Babka <vbabka@suse.cz>
+Date: Tue, 5 Mar 2019 15:46:50 -0800
+Subject: mm, mempolicy: fix uninit memory access
+
+[ Upstream commit 2e25644e8da4ed3a27e7b8315aaae74660be72dc ]
+
+Syzbot with KMSAN reports (excerpt):
+
+==================================================================
+BUG: KMSAN: uninit-value in mpol_rebind_policy mm/mempolicy.c:353 [inline]
+BUG: KMSAN: uninit-value in mpol_rebind_mm+0x249/0x370 mm/mempolicy.c:384
+CPU: 1 PID: 17420 Comm: syz-executor4 Not tainted 4.20.0-rc7+ #15
+Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
+Google 01/01/2011
+Call Trace:
+ __dump_stack lib/dump_stack.c:77 [inline]
+ dump_stack+0x173/0x1d0 lib/dump_stack.c:113
+ kmsan_report+0x12e/0x2a0 mm/kmsan/kmsan.c:613
+ __msan_warning+0x82/0xf0 mm/kmsan/kmsan_instr.c:295
+ mpol_rebind_policy mm/mempolicy.c:353 [inline]
+ mpol_rebind_mm+0x249/0x370 mm/mempolicy.c:384
+ update_tasks_nodemask+0x608/0xca0 kernel/cgroup/cpuset.c:1120
+ update_nodemasks_hier kernel/cgroup/cpuset.c:1185 [inline]
+ update_nodemask kernel/cgroup/cpuset.c:1253 [inline]
+ cpuset_write_resmask+0x2a98/0x34b0 kernel/cgroup/cpuset.c:1728
+
+...
+
+Uninit was created at:
+ kmsan_save_stack_with_flags mm/kmsan/kmsan.c:204 [inline]
+ kmsan_internal_poison_shadow+0x92/0x150 mm/kmsan/kmsan.c:158
+ kmsan_kmalloc+0xa6/0x130 mm/kmsan/kmsan_hooks.c:176
+ kmem_cache_alloc+0x572/0xb90 mm/slub.c:2777
+ mpol_new mm/mempolicy.c:276 [inline]
+ do_mbind mm/mempolicy.c:1180 [inline]
+ kernel_mbind+0x8a7/0x31a0 mm/mempolicy.c:1347
+ __do_sys_mbind mm/mempolicy.c:1354 [inline]
+
+As it's difficult to report where exactly the uninit value resides in
+the mempolicy object, we have to guess a bit. mm/mempolicy.c:353
+contains this part of mpol_rebind_policy():
+
+ if (!mpol_store_user_nodemask(pol) &&
+ nodes_equal(pol->w.cpuset_mems_allowed, *newmask))
+
+"mpol_store_user_nodemask(pol)" is testing pol->flags, which I couldn't
+ever see being uninitialized after leaving mpol_new(). So I'll guess
+it's actually about accessing pol->w.cpuset_mems_allowed on line 354,
+but still part of statement starting on line 353.
+
+For w.cpuset_mems_allowed to be not initialized, and the nodes_equal()
+reachable for a mempolicy where mpol_set_nodemask() is called in
+do_mbind(), it seems the only possibility is a MPOL_PREFERRED policy
+with empty set of nodes, i.e. MPOL_LOCAL equivalent, with MPOL_F_LOCAL
+flag. Let's exclude such policies from the nodes_equal() check. Note
+the uninit access should be benign anyway, as rebinding this kind of
+policy is always a no-op. Therefore no actual need for stable
+inclusion.
+
+Link: http://lkml.kernel.org/r/a71997c3-e8ae-a787-d5ce-3db05768b27c@suse.cz
+Link: http://lkml.kernel.org/r/73da3e9c-cc84-509e-17d9-0c434bb9967d@suse.cz
+Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
+Reported-by: syzbot+b19c2dc2c990ea657a71@syzkaller.appspotmail.com
+Cc: Alexander Potapenko <glider@google.com>
+Cc: Dmitry Vyukov <dvyukov@google.com>
+Cc: Andrea Arcangeli <aarcange@redhat.com>
+Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
+Cc: Michal Hocko <mhocko@suse.com>
+Cc: David Rientjes <rientjes@google.com>
+Cc: Yisheng Xie <xieyisheng1@huawei.com>
+Cc: zhong jiang <zhongjiang@huawei.com>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ mm/mempolicy.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/mm/mempolicy.c b/mm/mempolicy.c
+index f32d0a5be4fb..360b24bc69e5 100644
+--- a/mm/mempolicy.c
++++ b/mm/mempolicy.c
+@@ -350,7 +350,7 @@ static void mpol_rebind_policy(struct mempolicy *pol, const nodemask_t *newmask)
+ {
+ if (!pol)
+ return;
+- if (!mpol_store_user_nodemask(pol) &&
++ if (!mpol_store_user_nodemask(pol) && !(pol->flags & MPOL_F_LOCAL) &&
+ nodes_equal(pol->w.cpuset_mems_allowed, *newmask))
+ return;
+
+--
+2.19.1
+
--- /dev/null
+From 923fe3ddd5624ba28e25e63d7799a344e3d1d894 Mon Sep 17 00:00:00 2001
+From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
+Date: Tue, 5 Mar 2019 15:48:22 -0800
+Subject: mm,oom: don't kill global init via memory.oom.group
+
+[ Upstream commit d342a0b38674867ea67fde47b0e1e60ffe9f17a2 ]
+
+Since setting global init process to some memory cgroup is technically
+possible, oom_kill_memcg_member() must check it.
+
+ Tasks in /test1 are going to be killed due to memory.oom.group set
+ Memory cgroup out of memory: Killed process 1 (systemd) total-vm:43400kB, anon-rss:1228kB, file-rss:3992kB, shmem-rss:0kB
+ oom_reaper: reaped process 1 (systemd), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
+ Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000008b
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+int main(int argc, char *argv[])
+{
+ static char buffer[10485760];
+ static int pipe_fd[2] = { EOF, EOF };
+ unsigned int i;
+ int fd;
+ char buf[64] = { };
+ if (pipe(pipe_fd))
+ return 1;
+ if (chdir("/sys/fs/cgroup/"))
+ return 1;
+ fd = open("cgroup.subtree_control", O_WRONLY);
+ write(fd, "+memory", 7);
+ close(fd);
+ mkdir("test1", 0755);
+ fd = open("test1/memory.oom.group", O_WRONLY);
+ write(fd, "1", 1);
+ close(fd);
+ fd = open("test1/cgroup.procs", O_WRONLY);
+ write(fd, "1", 1);
+ snprintf(buf, sizeof(buf) - 1, "%d", getpid());
+ write(fd, buf, strlen(buf));
+ close(fd);
+ snprintf(buf, sizeof(buf) - 1, "%lu", sizeof(buffer) * 5);
+ fd = open("test1/memory.max", O_WRONLY);
+ write(fd, buf, strlen(buf));
+ close(fd);
+ for (i = 0; i < 10; i++)
+ if (fork() == 0) {
+ char c;
+ close(pipe_fd[1]);
+ read(pipe_fd[0], &c, 1);
+ memset(buffer, 0, sizeof(buffer));
+ sleep(3);
+ _exit(0);
+ }
+ close(pipe_fd[0]);
+ close(pipe_fd[1]);
+ sleep(3);
+ return 0;
+}
+
+[ 37.052923][ T9185] a.out invoked oom-killer: gfp_mask=0xcc0(GFP_KERNEL), order=0, oom_score_adj=0
+[ 37.056169][ T9185] CPU: 4 PID: 9185 Comm: a.out Kdump: loaded Not tainted 5.0.0-rc4-next-20190131 #280
+[ 37.059205][ T9185] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 04/13/2018
+[ 37.062954][ T9185] Call Trace:
+[ 37.063976][ T9185] dump_stack+0x67/0x95
+[ 37.065263][ T9185] dump_header+0x51/0x570
+[ 37.066619][ T9185] ? trace_hardirqs_on+0x3f/0x110
+[ 37.068171][ T9185] ? _raw_spin_unlock_irqrestore+0x3d/0x70
+[ 37.069967][ T9185] oom_kill_process+0x18d/0x210
+[ 37.071515][ T9185] out_of_memory+0x11b/0x380
+[ 37.072936][ T9185] mem_cgroup_out_of_memory+0xb6/0xd0
+[ 37.074601][ T9185] try_charge+0x790/0x820
+[ 37.076021][ T9185] mem_cgroup_try_charge+0x42/0x1d0
+[ 37.077629][ T9185] mem_cgroup_try_charge_delay+0x11/0x30
+[ 37.079370][ T9185] do_anonymous_page+0x105/0x5e0
+[ 37.080939][ T9185] __handle_mm_fault+0x9cb/0x1070
+[ 37.082485][ T9185] handle_mm_fault+0x1b2/0x3a0
+[ 37.083819][ T9185] ? handle_mm_fault+0x47/0x3a0
+[ 37.085181][ T9185] __do_page_fault+0x255/0x4c0
+[ 37.086529][ T9185] do_page_fault+0x28/0x260
+[ 37.087788][ T9185] ? page_fault+0x8/0x30
+[ 37.088978][ T9185] page_fault+0x1e/0x30
+[ 37.090142][ T9185] RIP: 0033:0x7f8b183aefe0
+[ 37.091433][ T9185] Code: 20 f3 44 0f 7f 44 17 d0 f3 44 0f 7f 47 30 f3 44 0f 7f 44 17 c0 48 01 fa 48 83 e2 c0 48 39 d1 74 a3 66 0f 1f 84 00 00 00 00 00 <66> 44 0f 7f 01 66 44 0f 7f 41 10 66 44 0f 7f 41 20 66 44 0f 7f 41
+[ 37.096917][ T9185] RSP: 002b:00007fffc5d329e8 EFLAGS: 00010206
+[ 37.098615][ T9185] RAX: 00000000006010e0 RBX: 0000000000000008 RCX: 0000000000c30000
+[ 37.100905][ T9185] RDX: 00000000010010c0 RSI: 0000000000000000 RDI: 00000000006010e0
+[ 37.103349][ T9185] RBP: 0000000000000000 R08: 00007f8b188f4740 R09: 0000000000000000
+[ 37.105797][ T9185] R10: 00007fffc5d32420 R11: 00007f8b183aef40 R12: 0000000000000005
+[ 37.108228][ T9185] R13: 0000000000000000 R14: ffffffffffffffff R15: 0000000000000000
+[ 37.110840][ T9185] memory: usage 51200kB, limit 51200kB, failcnt 125
+[ 37.113045][ T9185] memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0
+[ 37.115808][ T9185] kmem: usage 0kB, limit 9007199254740988kB, failcnt 0
+[ 37.117660][ T9185] Memory cgroup stats for /test1: cache:0KB rss:49484KB rss_huge:30720KB shmem:0KB mapped_file:0KB dirty:0KB writeback:0KB inactive_anon:0KB active_anon:49700KB inactive_file:0KB active_file:0KB unevictable:0KB
+[ 37.123371][ T9185] oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,oom_memcg=/test1,task_memcg=/test1,task=a.out,pid=9188,uid=0
+[ 37.128158][ T9185] Memory cgroup out of memory: Killed process 9188 (a.out) total-vm:14456kB, anon-rss:10324kB, file-rss:504kB, shmem-rss:0kB
+[ 37.132710][ T9185] Tasks in /test1 are going to be killed due to memory.oom.group set
+[ 37.132833][ T54] oom_reaper: reaped process 9188 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
+[ 37.135498][ T9185] Memory cgroup out of memory: Killed process 1 (systemd) total-vm:43400kB, anon-rss:1228kB, file-rss:3992kB, shmem-rss:0kB
+[ 37.143434][ T9185] Memory cgroup out of memory: Killed process 9182 (a.out) total-vm:14456kB, anon-rss:76kB, file-rss:588kB, shmem-rss:0kB
+[ 37.144328][ T54] oom_reaper: reaped process 1 (systemd), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
+[ 37.147585][ T9185] Memory cgroup out of memory: Killed process 9183 (a.out) total-vm:14456kB, anon-rss:6228kB, file-rss:512kB, shmem-rss:0kB
+[ 37.157222][ T9185] Memory cgroup out of memory: Killed process 9184 (a.out) total-vm:14456kB, anon-rss:6228kB, file-rss:508kB, shmem-rss:0kB
+[ 37.157259][ T9185] Memory cgroup out of memory: Killed process 9185 (a.out) total-vm:14456kB, anon-rss:6228kB, file-rss:512kB, shmem-rss:0kB
+[ 37.157291][ T9185] Memory cgroup out of memory: Killed process 9186 (a.out) total-vm:14456kB, anon-rss:4180kB, file-rss:508kB, shmem-rss:0kB
+[ 37.157306][ T54] oom_reaper: reaped process 9183 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
+[ 37.157328][ T9185] Memory cgroup out of memory: Killed process 9187 (a.out) total-vm:14456kB, anon-rss:4180kB, file-rss:512kB, shmem-rss:0kB
+[ 37.157452][ T9185] Memory cgroup out of memory: Killed process 9189 (a.out) total-vm:14456kB, anon-rss:6228kB, file-rss:512kB, shmem-rss:0kB
+[ 37.158733][ T9185] Memory cgroup out of memory: Killed process 9190 (a.out) total-vm:14456kB, anon-rss:552kB, file-rss:512kB, shmem-rss:0kB
+[ 37.160083][ T54] oom_reaper: reaped process 9186 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
+[ 37.160187][ T54] oom_reaper: reaped process 9189 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
+[ 37.206941][ T54] oom_reaper: reaped process 9185 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
+[ 37.212300][ T9185] Memory cgroup out of memory: Killed process 9191 (a.out) total-vm:14456kB, anon-rss:4180kB, file-rss:512kB, shmem-rss:0kB
+[ 37.212317][ T54] oom_reaper: reaped process 9190 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
+[ 37.218860][ T9185] Memory cgroup out of memory: Killed process 9192 (a.out) total-vm:14456kB, anon-rss:1080kB, file-rss:512kB, shmem-rss:0kB
+[ 37.227667][ T54] oom_reaper: reaped process 9192 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
+[ 37.292323][ T9193] abrt-hook-ccpp (9193) used greatest stack depth: 10480 bytes left
+[ 37.351843][ T1] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000008b
+[ 37.354833][ T1] CPU: 7 PID: 1 Comm: systemd Kdump: loaded Not tainted 5.0.0-rc4-next-20190131 #280
+[ 37.357876][ T1] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 04/13/2018
+[ 37.361685][ T1] Call Trace:
+[ 37.363239][ T1] dump_stack+0x67/0x95
+[ 37.365010][ T1] panic+0xfc/0x2b0
+[ 37.366853][ T1] do_exit+0xd55/0xd60
+[ 37.368595][ T1] do_group_exit+0x47/0xc0
+[ 37.370415][ T1] get_signal+0x32a/0x920
+[ 37.372449][ T1] ? _raw_spin_unlock_irqrestore+0x3d/0x70
+[ 37.374596][ T1] do_signal+0x32/0x6e0
+[ 37.376430][ T1] ? exit_to_usermode_loop+0x26/0x9b
+[ 37.378418][ T1] ? prepare_exit_to_usermode+0xa8/0xd0
+[ 37.380571][ T1] exit_to_usermode_loop+0x3e/0x9b
+[ 37.382588][ T1] prepare_exit_to_usermode+0xa8/0xd0
+[ 37.384594][ T1] ? page_fault+0x8/0x30
+[ 37.386453][ T1] retint_user+0x8/0x18
+[ 37.388160][ T1] RIP: 0033:0x7f42c06974a8
+[ 37.389922][ T1] Code: Bad RIP value.
+[ 37.391788][ T1] RSP: 002b:00007ffc3effd388 EFLAGS: 00010213
+[ 37.394075][ T1] RAX: 000000000000000e RBX: 00007ffc3effd390 RCX: 0000000000000000
+[ 37.396963][ T1] RDX: 000000000000002a RSI: 00007ffc3effd390 RDI: 0000000000000004
+[ 37.399550][ T1] RBP: 00007ffc3effd680 R08: 0000000000000000 R09: 0000000000000000
+[ 37.402334][ T1] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001
+[ 37.404890][ T1] R13: ffffffffffffffff R14: 0000000000000884 R15: 000056460b1ac3b0
+
+Link: http://lkml.kernel.org/r/201902010336.x113a4EO027170@www262.sakura.ne.jp
+Fixes: 3d8b38eb81cac813 ("mm, oom: introduce memory.oom.group")
+Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
+Acked-by: Michal Hocko <mhocko@suse.com>
+Cc: Roman Gushchin <guro@fb.com>
+Cc: Johannes Weiner <hannes@cmpxchg.org>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ mm/oom_kill.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/mm/oom_kill.c b/mm/oom_kill.c
+index e66ac8a47dd6..dbddb7a409dd 100644
+--- a/mm/oom_kill.c
++++ b/mm/oom_kill.c
+@@ -915,7 +915,8 @@ static void __oom_kill_process(struct task_struct *victim)
+ */
+ static int oom_kill_memcg_member(struct task_struct *task, void *unused)
+ {
+- if (task->signal->oom_score_adj != OOM_SCORE_ADJ_MIN) {
++ if (task->signal->oom_score_adj != OOM_SCORE_ADJ_MIN &&
++ !is_global_init(task)) {
+ get_task_struct(task);
+ __oom_kill_process(task);
+ }
+--
+2.19.1
+
--- /dev/null
+From 770cc845b72cb6910b53644743df8e9fc32f8bcc Mon Sep 17 00:00:00 2001
+From: Qian Cai <cai@lca.pw>
+Date: Tue, 5 Mar 2019 15:49:46 -0800
+Subject: mm/page_ext.c: fix an imbalance with kmemleak
+
+[ Upstream commit 0c81585499601acd1d0e1cbf424cabfaee60628c ]
+
+After offlining a memory block, kmemleak scan will trigger a crash, as
+it encounters a page ext address that has already been freed during
+memory offlining. At the beginning in alloc_page_ext(), it calls
+kmemleak_alloc(), but it does not call kmemleak_free() in
+free_page_ext().
+
+ BUG: unable to handle kernel paging request at ffff888453d00000
+ PGD 128a01067 P4D 128a01067 PUD 128a04067 PMD 47e09e067 PTE 800ffffbac2ff060
+ Oops: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN PTI
+ CPU: 1 PID: 1594 Comm: bash Not tainted 5.0.0-rc8+ #15
+ Hardware name: HP ProLiant DL180 Gen9/ProLiant DL180 Gen9, BIOS U20 10/25/2017
+ RIP: 0010:scan_block+0xb5/0x290
+ Code: 85 6e 01 00 00 48 b8 00 00 30 f5 81 88 ff ff 48 39 c3 0f 84 5b 01 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 0f 85 87 01 00 00 <4c> 8b 3b e8 f3 0c fa ff 4c 39 3d 0c 6b 4c 01 0f 87 08 01 00 00 4c
+ RSP: 0018:ffff8881ec57f8e0 EFLAGS: 00010082
+ RAX: 0000000000000000 RBX: ffff888453d00000 RCX: ffffffffa61e5a54
+ RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888453d00000
+ RBP: ffff8881ec57f920 R08: fffffbfff4ed588d R09: fffffbfff4ed588c
+ R10: fffffbfff4ed588c R11: ffffffffa76ac463 R12: dffffc0000000000
+ R13: ffff888453d00ff9 R14: ffff8881f80cef48 R15: ffff8881f80cef48
+ FS: 00007f6c0e3f8740(0000) GS:ffff8881f7680000(0000) knlGS:0000000000000000
+ CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
+ CR2: ffff888453d00000 CR3: 00000001c4244003 CR4: 00000000001606a0
+ Call Trace:
+ scan_gray_list+0x269/0x430
+ kmemleak_scan+0x5a8/0x10f0
+ kmemleak_write+0x541/0x6ca
+ full_proxy_write+0xf8/0x190
+ __vfs_write+0xeb/0x980
+ vfs_write+0x15a/0x4f0
+ ksys_write+0xd2/0x1b0
+ __x64_sys_write+0x73/0xb0
+ do_syscall_64+0xeb/0xaaa
+ entry_SYSCALL_64_after_hwframe+0x44/0xa9
+ RIP: 0033:0x7f6c0dad73b8
+ Code: 89 02 48 c7 c0 ff ff ff ff eb b3 0f 1f 80 00 00 00 00 f3 0f 1e fa 48 8d 05 65 63 2d 00 8b 00 85 c0 75 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 41 54 49 89 d4 55
+ RSP: 002b:00007ffd5b863cb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
+ RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f6c0dad73b8
+ RDX: 0000000000000005 RSI: 000055a9216e1710 RDI: 0000000000000001
+ RBP: 000055a9216e1710 R08: 000000000000000a R09: 00007ffd5b863840
+ R10: 000000000000000a R11: 0000000000000246 R12: 00007f6c0dda9780
+ R13: 0000000000000005 R14: 00007f6c0dda4740 R15: 0000000000000005
+ Modules linked in: nls_iso8859_1 nls_cp437 vfat fat kvm_intel kvm irqbypass efivars ip_tables x_tables xfs sd_mod ahci libahci igb i2c_algo_bit libata i2c_core dm_mirror dm_region_hash dm_log dm_mod efivarfs
+ CR2: ffff888453d00000
+ ---[ end trace ccf646c7456717c5 ]---
+ Kernel panic - not syncing: Fatal exception
+ Shutting down cpus with NMI
+ Kernel Offset: 0x24c00000 from 0xffffffff81000000 (relocation range:
+ 0xffffffff80000000-0xffffffffbfffffff)
+ ---[ end Kernel panic - not syncing: Fatal exception ]---
+
+Link: http://lkml.kernel.org/r/20190227173147.75650-1-cai@lca.pw
+Signed-off-by: Qian Cai <cai@lca.pw>
+Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ mm/page_ext.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/mm/page_ext.c b/mm/page_ext.c
+index 4961f13b6ec1..aad120123688 100644
+--- a/mm/page_ext.c
++++ b/mm/page_ext.c
+@@ -273,6 +273,7 @@ static void free_page_ext(void *addr)
+ table_size = get_entry_size() * PAGES_PER_SECTION;
+
+ BUG_ON(PageReserved(page));
++ kmemleak_free(addr);
+ free_pages_exact(addr, table_size);
+ }
+ }
+--
+2.19.1
+
--- /dev/null
+From ee8174f3693d65407585195ea5899e34760f4d5d Mon Sep 17 00:00:00 2001
+From: Qian Cai <cai@lca.pw>
+Date: Tue, 5 Mar 2019 15:42:03 -0800
+Subject: mm/slab.c: kmemleak no scan alien caches
+
+[ Upstream commit 92d1d07daad65c300c7d0b68bbef8867e9895d54 ]
+
+Kmemleak throws endless warnings during boot due to in
+__alloc_alien_cache(),
+
+ alc = kmalloc_node(memsize, gfp, node);
+ init_arraycache(&alc->ac, entries, batch);
+ kmemleak_no_scan(ac);
+
+Kmemleak does not track the array cache (alc->ac) but the alien cache
+(alc) instead, so let it track the latter by lifting kmemleak_no_scan()
+out of init_arraycache().
+
+There is another place that calls init_arraycache(), but
+alloc_kmem_cache_cpus() uses the percpu allocation where will never be
+considered as a leak.
+
+ kmemleak: Found object by alias at 0xffff8007b9aa7e38
+ CPU: 190 PID: 1 Comm: swapper/0 Not tainted 5.0.0-rc2+ #2
+ Call trace:
+ dump_backtrace+0x0/0x168
+ show_stack+0x24/0x30
+ dump_stack+0x88/0xb0
+ lookup_object+0x84/0xac
+ find_and_get_object+0x84/0xe4
+ kmemleak_no_scan+0x74/0xf4
+ setup_kmem_cache_node+0x2b4/0x35c
+ __do_tune_cpucache+0x250/0x2d4
+ do_tune_cpucache+0x4c/0xe4
+ enable_cpucache+0xc8/0x110
+ setup_cpu_cache+0x40/0x1b8
+ __kmem_cache_create+0x240/0x358
+ create_cache+0xc0/0x198
+ kmem_cache_create_usercopy+0x158/0x20c
+ kmem_cache_create+0x50/0x64
+ fsnotify_init+0x58/0x6c
+ do_one_initcall+0x194/0x388
+ kernel_init_freeable+0x668/0x688
+ kernel_init+0x18/0x124
+ ret_from_fork+0x10/0x18
+ kmemleak: Object 0xffff8007b9aa7e00 (size 256):
+ kmemleak: comm "swapper/0", pid 1, jiffies 4294697137
+ kmemleak: min_count = 1
+ kmemleak: count = 0
+ kmemleak: flags = 0x1
+ kmemleak: checksum = 0
+ kmemleak: backtrace:
+ kmemleak_alloc+0x84/0xb8
+ kmem_cache_alloc_node_trace+0x31c/0x3a0
+ __kmalloc_node+0x58/0x78
+ setup_kmem_cache_node+0x26c/0x35c
+ __do_tune_cpucache+0x250/0x2d4
+ do_tune_cpucache+0x4c/0xe4
+ enable_cpucache+0xc8/0x110
+ setup_cpu_cache+0x40/0x1b8
+ __kmem_cache_create+0x240/0x358
+ create_cache+0xc0/0x198
+ kmem_cache_create_usercopy+0x158/0x20c
+ kmem_cache_create+0x50/0x64
+ fsnotify_init+0x58/0x6c
+ do_one_initcall+0x194/0x388
+ kernel_init_freeable+0x668/0x688
+ kernel_init+0x18/0x124
+ kmemleak: Not scanning unknown object at 0xffff8007b9aa7e38
+ CPU: 190 PID: 1 Comm: swapper/0 Not tainted 5.0.0-rc2+ #2
+ Call trace:
+ dump_backtrace+0x0/0x168
+ show_stack+0x24/0x30
+ dump_stack+0x88/0xb0
+ kmemleak_no_scan+0x90/0xf4
+ setup_kmem_cache_node+0x2b4/0x35c
+ __do_tune_cpucache+0x250/0x2d4
+ do_tune_cpucache+0x4c/0xe4
+ enable_cpucache+0xc8/0x110
+ setup_cpu_cache+0x40/0x1b8
+ __kmem_cache_create+0x240/0x358
+ create_cache+0xc0/0x198
+ kmem_cache_create_usercopy+0x158/0x20c
+ kmem_cache_create+0x50/0x64
+ fsnotify_init+0x58/0x6c
+ do_one_initcall+0x194/0x388
+ kernel_init_freeable+0x668/0x688
+ kernel_init+0x18/0x124
+ ret_from_fork+0x10/0x18
+
+Link: http://lkml.kernel.org/r/20190129184518.39808-1-cai@lca.pw
+Fixes: 1fe00d50a9e8 ("slab: factor out initialization of array cache")
+Signed-off-by: Qian Cai <cai@lca.pw>
+Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
+Cc: Christoph Lameter <cl@linux.com>
+Cc: Pekka Enberg <penberg@kernel.org>
+Cc: David Rientjes <rientjes@google.com>
+Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
+Cc: Catalin Marinas <catalin.marinas@arm.com>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ mm/slab.c | 17 +++++++++--------
+ 1 file changed, 9 insertions(+), 8 deletions(-)
+
+diff --git a/mm/slab.c b/mm/slab.c
+index 364e42d5a399..b8e0ec74330f 100644
+--- a/mm/slab.c
++++ b/mm/slab.c
+@@ -563,14 +563,6 @@ static void start_cpu_timer(int cpu)
+
+ static void init_arraycache(struct array_cache *ac, int limit, int batch)
+ {
+- /*
+- * The array_cache structures contain pointers to free object.
+- * However, when such objects are allocated or transferred to another
+- * cache the pointers are not cleared and they could be counted as
+- * valid references during a kmemleak scan. Therefore, kmemleak must
+- * not scan such objects.
+- */
+- kmemleak_no_scan(ac);
+ if (ac) {
+ ac->avail = 0;
+ ac->limit = limit;
+@@ -586,6 +578,14 @@ static struct array_cache *alloc_arraycache(int node, int entries,
+ struct array_cache *ac = NULL;
+
+ ac = kmalloc_node(memsize, gfp, node);
++ /*
++ * The array_cache structures contain pointers to free object.
++ * However, when such objects are allocated or transferred to another
++ * cache the pointers are not cleared and they could be counted as
++ * valid references during a kmemleak scan. Therefore, kmemleak must
++ * not scan such objects.
++ */
++ kmemleak_no_scan(ac);
+ init_arraycache(ac, entries, batchcount);
+ return ac;
+ }
+@@ -680,6 +680,7 @@ static struct alien_cache *__alloc_alien_cache(int node, int entries,
+
+ alc = kmalloc_node(memsize, gfp, node);
+ if (alc) {
++ kmemleak_no_scan(alc);
+ init_arraycache(&alc->ac, entries, batch);
+ spin_lock_init(&alc->lock);
+ }
+--
+2.19.1
+
--- /dev/null
+From f288a532a6e95aa11f17245ffad35e2e0e23238d Mon Sep 17 00:00:00 2001
+From: Qian Cai <cai@lca.pw>
+Date: Tue, 5 Mar 2019 15:50:11 -0800
+Subject: mm/sparse: fix a bad comparison
+
+[ Upstream commit d778015ac95bc036af73342c878ab19250e01fe1 ]
+
+next_present_section_nr() could only return an unsigned number -1, so
+just check it specifically where compilers will convert -1 to unsigned
+if needed.
+
+ mm/sparse.c: In function 'sparse_init_nid':
+ mm/sparse.c:200:20: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
+ ((section_nr >= 0) && \
+ ^~
+ mm/sparse.c:478:2: note: in expansion of macro
+ 'for_each_present_section_nr'
+ for_each_present_section_nr(pnum_begin, pnum) {
+ ^~~~~~~~~~~~~~~~~~~~~~~~~~~
+ mm/sparse.c:200:20: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
+ ((section_nr >= 0) && \
+ ^~
+ mm/sparse.c:497:2: note: in expansion of macro
+ 'for_each_present_section_nr'
+ for_each_present_section_nr(pnum_begin, pnum) {
+ ^~~~~~~~~~~~~~~~~~~~~~~~~~~
+ mm/sparse.c: In function 'sparse_init':
+ mm/sparse.c:200:20: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
+ ((section_nr >= 0) && \
+ ^~
+ mm/sparse.c:520:2: note: in expansion of macro
+ 'for_each_present_section_nr'
+ for_each_present_section_nr(pnum_begin + 1, pnum_end) {
+ ^~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Link: http://lkml.kernel.org/r/20190228181839.86504-1-cai@lca.pw
+Fixes: c4e1be9ec113 ("mm, sparsemem: break out of loops early")
+Signed-off-by: Qian Cai <cai@lca.pw>
+Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
+Cc: Dave Hansen <dave.hansen@linux.intel.com>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ mm/sparse.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/mm/sparse.c b/mm/sparse.c
+index 10b07eea9a6e..45950a074bdb 100644
+--- a/mm/sparse.c
++++ b/mm/sparse.c
+@@ -196,7 +196,7 @@ static inline int next_present_section_nr(int section_nr)
+ }
+ #define for_each_present_section_nr(start, section_nr) \
+ for (section_nr = next_present_section_nr(start-1); \
+- ((section_nr >= 0) && \
++ ((section_nr != -1) && \
+ (section_nr <= __highest_present_section_nr)); \
+ section_nr = next_present_section_nr(section_nr))
+
+--
+2.19.1
+
--- /dev/null
+From 5b77c7b8a855880bc956e31197262cc3c78391f6 Mon Sep 17 00:00:00 2001
+From: Daniel Jordan <daniel.m.jordan@oracle.com>
+Date: Tue, 5 Mar 2019 15:48:19 -0800
+Subject: mm, swap: bounds check swap_info array accesses to avoid NULL derefs
+
+[ Upstream commit c10d38cc8d3e43f946b6c2bf4602c86791587f30 ]
+
+Dan Carpenter reports a potential NULL dereference in
+get_swap_page_of_type:
+
+ Smatch complains that the NULL checks on "si" aren't consistent. This
+ seems like a real bug because we have not ensured that the type is
+ valid and so "si" can be NULL.
+
+Add the missing check for NULL, taking care to use a read barrier to
+ensure CPU1 observes CPU0's updates in the correct order:
+
+ CPU0 CPU1
+ alloc_swap_info() if (type >= nr_swapfiles)
+ swap_info[type] = p /* handle invalid entry */
+ smp_wmb() smp_rmb()
+ ++nr_swapfiles p = swap_info[type]
+
+Without smp_rmb, CPU1 might observe CPU0's write to nr_swapfiles before
+CPU0's write to swap_info[type] and read NULL from swap_info[type].
+
+Ying Huang noticed other places in swapfile.c don't order these reads
+properly. Introduce swap_type_to_swap_info to encourage correct usage.
+
+Use READ_ONCE and WRITE_ONCE to follow the Linux Kernel Memory Model
+(see tools/memory-model/Documentation/explanation.txt).
+
+This ordering need not be enforced in places where swap_lock is held
+(e.g. si_swapinfo) because swap_lock serializes updates to nr_swapfiles
+and the swap_info array.
+
+Link: http://lkml.kernel.org/r/20190131024410.29859-1-daniel.m.jordan@oracle.com
+Fixes: ec8acf20afb8 ("swap: add per-partition lock for swapfile")
+Signed-off-by: Daniel Jordan <daniel.m.jordan@oracle.com>
+Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
+Suggested-by: "Huang, Ying" <ying.huang@intel.com>
+Reviewed-by: Andrea Parri <andrea.parri@amarulasolutions.com>
+Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
+Cc: Alan Stern <stern@rowland.harvard.edu>
+Cc: Andi Kleen <ak@linux.intel.com>
+Cc: Dave Hansen <dave.hansen@linux.intel.com>
+Cc: Omar Sandoval <osandov@fb.com>
+Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
+Cc: Shaohua Li <shli@kernel.org>
+Cc: Stephen Rothwell <sfr@canb.auug.org.au>
+Cc: Tejun Heo <tj@kernel.org>
+Cc: Will Deacon <will.deacon@arm.com>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ mm/swapfile.c | 51 +++++++++++++++++++++++++++++----------------------
+ 1 file changed, 29 insertions(+), 22 deletions(-)
+
+diff --git a/mm/swapfile.c b/mm/swapfile.c
+index 340ef3177686..0047dcaf9369 100644
+--- a/mm/swapfile.c
++++ b/mm/swapfile.c
+@@ -98,6 +98,15 @@ static atomic_t proc_poll_event = ATOMIC_INIT(0);
+
+ atomic_t nr_rotate_swap = ATOMIC_INIT(0);
+
++static struct swap_info_struct *swap_type_to_swap_info(int type)
++{
++ if (type >= READ_ONCE(nr_swapfiles))
++ return NULL;
++
++ smp_rmb(); /* Pairs with smp_wmb in alloc_swap_info. */
++ return READ_ONCE(swap_info[type]);
++}
++
+ static inline unsigned char swap_count(unsigned char ent)
+ {
+ return ent & ~SWAP_HAS_CACHE; /* may include COUNT_CONTINUED flag */
+@@ -1030,12 +1039,14 @@ noswap:
+ /* The only caller of this function is now suspend routine */
+ swp_entry_t get_swap_page_of_type(int type)
+ {
+- struct swap_info_struct *si;
++ struct swap_info_struct *si = swap_type_to_swap_info(type);
+ pgoff_t offset;
+
+- si = swap_info[type];
++ if (!si)
++ goto fail;
++
+ spin_lock(&si->lock);
+- if (si && (si->flags & SWP_WRITEOK)) {
++ if (si->flags & SWP_WRITEOK) {
+ atomic_long_dec(&nr_swap_pages);
+ /* This is called for allocating swap entry, not cache */
+ offset = scan_swap_map(si, 1);
+@@ -1046,6 +1057,7 @@ swp_entry_t get_swap_page_of_type(int type)
+ atomic_long_inc(&nr_swap_pages);
+ }
+ spin_unlock(&si->lock);
++fail:
+ return (swp_entry_t) {0};
+ }
+
+@@ -1057,9 +1069,9 @@ static struct swap_info_struct *__swap_info_get(swp_entry_t entry)
+ if (!entry.val)
+ goto out;
+ type = swp_type(entry);
+- if (type >= nr_swapfiles)
++ p = swap_type_to_swap_info(type);
++ if (!p)
+ goto bad_nofile;
+- p = swap_info[type];
+ if (!(p->flags & SWP_USED))
+ goto bad_device;
+ offset = swp_offset(entry);
+@@ -1708,10 +1720,9 @@ int swap_type_of(dev_t device, sector_t offset, struct block_device **bdev_p)
+ sector_t swapdev_block(int type, pgoff_t offset)
+ {
+ struct block_device *bdev;
++ struct swap_info_struct *si = swap_type_to_swap_info(type);
+
+- if ((unsigned int)type >= nr_swapfiles)
+- return 0;
+- if (!(swap_info[type]->flags & SWP_WRITEOK))
++ if (!si || !(si->flags & SWP_WRITEOK))
+ return 0;
+ return map_swap_entry(swp_entry(type, offset), &bdev);
+ }
+@@ -2269,7 +2280,7 @@ static sector_t map_swap_entry(swp_entry_t entry, struct block_device **bdev)
+ struct swap_extent *se;
+ pgoff_t offset;
+
+- sis = swap_info[swp_type(entry)];
++ sis = swp_swap_info(entry);
+ *bdev = sis->bdev;
+
+ offset = swp_offset(entry);
+@@ -2707,9 +2718,7 @@ static void *swap_start(struct seq_file *swap, loff_t *pos)
+ if (!l)
+ return SEQ_START_TOKEN;
+
+- for (type = 0; type < nr_swapfiles; type++) {
+- smp_rmb(); /* read nr_swapfiles before swap_info[type] */
+- si = swap_info[type];
++ for (type = 0; (si = swap_type_to_swap_info(type)); type++) {
+ if (!(si->flags & SWP_USED) || !si->swap_map)
+ continue;
+ if (!--l)
+@@ -2729,9 +2738,7 @@ static void *swap_next(struct seq_file *swap, void *v, loff_t *pos)
+ else
+ type = si->type + 1;
+
+- for (; type < nr_swapfiles; type++) {
+- smp_rmb(); /* read nr_swapfiles before swap_info[type] */
+- si = swap_info[type];
++ for (; (si = swap_type_to_swap_info(type)); type++) {
+ if (!(si->flags & SWP_USED) || !si->swap_map)
+ continue;
+ ++*pos;
+@@ -2838,14 +2845,14 @@ static struct swap_info_struct *alloc_swap_info(void)
+ }
+ if (type >= nr_swapfiles) {
+ p->type = type;
+- swap_info[type] = p;
++ WRITE_ONCE(swap_info[type], p);
+ /*
+ * Write swap_info[type] before nr_swapfiles, in case a
+ * racing procfs swap_start() or swap_next() is reading them.
+ * (We never shrink nr_swapfiles, we never free this entry.)
+ */
+ smp_wmb();
+- nr_swapfiles++;
++ WRITE_ONCE(nr_swapfiles, nr_swapfiles + 1);
+ } else {
+ kvfree(p);
+ p = swap_info[type];
+@@ -3365,7 +3372,7 @@ static int __swap_duplicate(swp_entry_t entry, unsigned char usage)
+ {
+ struct swap_info_struct *p;
+ struct swap_cluster_info *ci;
+- unsigned long offset, type;
++ unsigned long offset;
+ unsigned char count;
+ unsigned char has_cache;
+ int err = -EINVAL;
+@@ -3373,10 +3380,10 @@ static int __swap_duplicate(swp_entry_t entry, unsigned char usage)
+ if (non_swap_entry(entry))
+ goto out;
+
+- type = swp_type(entry);
+- if (type >= nr_swapfiles)
++ p = swp_swap_info(entry);
++ if (!p)
+ goto bad_file;
+- p = swap_info[type];
++
+ offset = swp_offset(entry);
+ if (unlikely(offset >= p->max))
+ goto out;
+@@ -3473,7 +3480,7 @@ int swapcache_prepare(swp_entry_t entry)
+
+ struct swap_info_struct *swp_swap_info(swp_entry_t entry)
+ {
+- return swap_info[swp_type(entry)];
++ return swap_type_to_swap_info(swp_type(entry));
+ }
+
+ struct swap_info_struct *page_swap_info(struct page *page)
+--
+2.19.1
+
--- /dev/null
+From d4a6ff5ff21a3ee0ee1f905ebf04888dfa6c5f31 Mon Sep 17 00:00:00 2001
+From: "Uladzislau Rezki (Sony)" <urezki@gmail.com>
+Date: Tue, 5 Mar 2019 15:45:59 -0800
+Subject: mm/vmalloc.c: fix kernel BUG at mm/vmalloc.c:512!
+
+[ Upstream commit afd07389d3f4933c7f7817a92fb5e053d59a3182 ]
+
+One of the vmalloc stress test case triggers the kernel BUG():
+
+ <snip>
+ [60.562151] ------------[ cut here ]------------
+ [60.562154] kernel BUG at mm/vmalloc.c:512!
+ [60.562206] invalid opcode: 0000 [#1] PREEMPT SMP PTI
+ [60.562247] CPU: 0 PID: 430 Comm: vmalloc_test/0 Not tainted 4.20.0+ #161
+ [60.562293] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
+ [60.562351] RIP: 0010:alloc_vmap_area+0x36f/0x390
+ <snip>
+
+it can happen due to big align request resulting in overflowing of
+calculated address, i.e. it becomes 0 after ALIGN()'s fixup.
+
+Fix it by checking if calculated address is within vstart/vend range.
+
+Link: http://lkml.kernel.org/r/20190124115648.9433-2-urezki@gmail.com
+Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
+Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
+Cc: Ingo Molnar <mingo@elte.hu>
+Cc: Joel Fernandes <joelaf@google.com>
+Cc: Matthew Wilcox <willy@infradead.org>
+Cc: Michal Hocko <mhocko@suse.com>
+Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com>
+Cc: Steven Rostedt <rostedt@goodmis.org>
+Cc: Tejun Heo <tj@kernel.org>
+Cc: Thomas Garnier <thgarnie@google.com>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ mm/vmalloc.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/mm/vmalloc.c b/mm/vmalloc.c
+index 91a789a46b12..a46ec261a44e 100644
+--- a/mm/vmalloc.c
++++ b/mm/vmalloc.c
+@@ -498,7 +498,11 @@ nocache:
+ }
+
+ found:
+- if (addr + size > vend)
++ /*
++ * Check also calculated address against the vstart,
++ * because it can be 0 because of big align request.
++ */
++ if (addr + size > vend || addr < vstart)
+ goto overflow;
+
+ va->va_start = addr;
+--
+2.19.1
+
--- /dev/null
+From 02e705693c346ba99c52a9a6db7658ce6d4f1f92 Mon Sep 17 00:00:00 2001
+From: Aaro Koskinen <aaro.koskinen@iki.fi>
+Date: Sun, 3 Feb 2019 00:14:33 +0200
+Subject: mmc: omap: fix the maximum timeout setting
+
+[ Upstream commit a6327b5e57fdc679c842588c3be046c0b39cc127 ]
+
+When running OMAP1 kernel on QEMU, MMC access is annoyingly noisy:
+
+ MMC: CTO of 0xff and 0xfe cannot be used!
+ MMC: CTO of 0xff and 0xfe cannot be used!
+ MMC: CTO of 0xff and 0xfe cannot be used!
+ [ad inf.]
+
+Emulator warnings appear to be valid. The TI document SPRU680 [1]
+("OMAP5910 Dual-Core Processor MultiMedia Card/Secure Data Memory Card
+(MMC/SD) Reference Guide") page 36 states that the maximum timeout is 253
+cycles and "0xff and 0xfe cannot be used".
+
+Fix by using 0xfd as the maximum timeout.
+
+Tested using QEMU 2.5 (Siemens SX1 machine, OMAP310), and also checked on
+real hardware using Palm TE (OMAP310), Nokia 770 (OMAP1710) and Nokia N810
+(OMAP2420) that MMC works as before.
+
+[1] http://www.ti.com/lit/ug/spru680/spru680.pdf
+
+Fixes: 730c9b7e6630f ("[MMC] Add OMAP MMC host driver")
+Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
+Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/mmc/host/omap.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
+index c60a7625b1fa..b2873a2432b6 100644
+--- a/drivers/mmc/host/omap.c
++++ b/drivers/mmc/host/omap.c
+@@ -920,7 +920,7 @@ static inline void set_cmd_timeout(struct mmc_omap_host *host, struct mmc_reques
+ reg &= ~(1 << 5);
+ OMAP_MMC_WRITE(host, SDIO, reg);
+ /* Set maximum timeout */
+- OMAP_MMC_WRITE(host, CTO, 0xff);
++ OMAP_MMC_WRITE(host, CTO, 0xfd);
+ }
+
+ static inline void set_data_timeout(struct mmc_omap_host *host, struct mmc_request *req)
+--
+2.19.1
+
--- /dev/null
+From 949d4942ec7ab3ff82a991b1cab3fd798ea8fa09 Mon Sep 17 00:00:00 2001
+From: Wen Yang <wen.yang99@zte.com.cn>
+Date: Fri, 22 Feb 2019 15:15:40 +0800
+Subject: mt76: fix a leaked reference by adding a missing of_node_put
+
+[ Upstream commit 34e022d8b780a03902d82fb3997ba7c7b1f40c81 ]
+
+The call to of_find_node_by_phandle returns a node pointer with refcount
+incremented thus it must be explicitly decremented after the last
+usage.
+
+Detected by coccinelle with the following warnings:
+./drivers/net/wireless/mediatek/mt76/eeprom.c:58:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 48, but without a corresponding object release within this function.
+./drivers/net/wireless/mediatek/mt76/eeprom.c:61:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 48, but without a corresponding object release within this function.
+./drivers/net/wireless/mediatek/mt76/eeprom.c:67:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 48, but without a corresponding object release within this function.
+./drivers/net/wireless/mediatek/mt76/eeprom.c:70:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 48, but without a corresponding object release within this function.
+./drivers/net/wireless/mediatek/mt76/eeprom.c:72:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 48, but without a corresponding object release within this function.
+
+Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
+Cc: Felix Fietkau <nbd@nbd.name>
+Cc: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
+Cc: Kalle Valo <kvalo@codeaurora.org>
+Cc: "David S. Miller" <davem@davemloft.net>
+Cc: Matthias Brugger <matthias.bgg@gmail.com>
+Cc: linux-wireless@vger.kernel.org
+Cc: netdev@vger.kernel.org
+Cc: linux-arm-kernel@lists.infradead.org
+Cc: linux-mediatek@lists.infradead.org
+Cc: linux-kernel@vger.kernel.org
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/wireless/mediatek/mt76/eeprom.c | 24 ++++++++++++++-------
+ 1 file changed, 16 insertions(+), 8 deletions(-)
+
+diff --git a/drivers/net/wireless/mediatek/mt76/eeprom.c b/drivers/net/wireless/mediatek/mt76/eeprom.c
+index 530e5593765c..a1529920d877 100644
+--- a/drivers/net/wireless/mediatek/mt76/eeprom.c
++++ b/drivers/net/wireless/mediatek/mt76/eeprom.c
+@@ -54,22 +54,30 @@ mt76_get_of_eeprom(struct mt76_dev *dev, int len)
+ part = np->name;
+
+ mtd = get_mtd_device_nm(part);
+- if (IS_ERR(mtd))
+- return PTR_ERR(mtd);
++ if (IS_ERR(mtd)) {
++ ret = PTR_ERR(mtd);
++ goto out_put_node;
++ }
+
+- if (size <= sizeof(*list))
+- return -EINVAL;
++ if (size <= sizeof(*list)) {
++ ret = -EINVAL;
++ goto out_put_node;
++ }
+
+ offset = be32_to_cpup(list);
+ ret = mtd_read(mtd, offset, len, &retlen, dev->eeprom.data);
+ put_mtd_device(mtd);
+ if (ret)
+- return ret;
++ goto out_put_node;
+
+- if (retlen < len)
+- return -EINVAL;
++ if (retlen < len) {
++ ret = -EINVAL;
++ goto out_put_node;
++ }
+
+- return 0;
++out_put_node:
++ of_node_put(np);
++ return ret;
+ #else
+ return -ENOENT;
+ #endif
+--
+2.19.1
+
--- /dev/null
+From d0633bd40f5437eec8df6ac812a3dbf477237b26 Mon Sep 17 00:00:00 2001
+From: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
+Date: Sun, 10 Feb 2019 22:49:15 +0100
+Subject: mt76: usb: do not run mt76u_queues_deinit twice
+
+[ Upstream commit b3098121c42caaf3aea239b8655cf52d45be116f ]
+
+Do not call mt76u_queues_deinit routine in mt76u_alloc_queues error path
+since it will be run in mt76x0u_register_device or
+mt76x2u_register_device error path. Current implementation triggers the
+following kernel warning:
+
+[ 67.005516] WARNING: CPU: 2 PID: 761 at lib/refcount.c:187 refcount_sub_and_test_checked+0xa4/0xb8
+[ 67.019513] refcount_t: underflow; use-after-free.
+[ 67.099872] Hardware name: BCM2835
+[ 67.106268] Backtrace:
+[ 67.111584] [<8010c91c>] (dump_backtrace) from [<8010cc00>] (show_stack+0x20/0x24)
+[ 67.124974] r6:60000013 r5:ffffffff r4:00000000 r3:a50bade6
+[ 67.132226] [<8010cbe0>] (show_stack) from [<807ca5f4>] (dump_stack+0xc8/0x114)
+[ 67.141225] [<807ca52c>] (dump_stack) from [<8011e65c>] (__warn+0xf4/0x120)
+[ 67.149849] r9:000000bb r8:804d0138 r7:00000009 r6:8099dc84 r5:00000000 r4:b66c7b58
+[ 67.160767] [<8011e568>] (__warn) from [<8011e6d0>] (warn_slowpath_fmt+0x48/0x50)
+[ 67.171436] r9:7f65e128 r8:80d1419c r7:80c0bac4 r6:b97b3044 r5:b7368e00 r4:00000000
+[ 67.182433] [<8011e68c>] (warn_slowpath_fmt) from [<804d0138>] (refcount_sub_and_test_checked+0xa4/0xb8)
+[ 67.195221] r3:80c91c25 r2:8099dc94
+[ 67.200370] r4:00000000
+[ 67.204397] [<804d0094>] (refcount_sub_and_test_checked) from [<804d0164>] (refcount_dec_and_test_checked+0x18/0x1c)
+[ 67.218046] r4:b7368e00 r3:00000001
+[ 67.223125] [<804d014c>] (refcount_dec_and_test_checked) from [<805db49c>] (usb_free_urb+0x20/0x4c)
+[ 67.235358] [<805db47c>] (usb_free_urb) from [<7f639804>] (mt76u_buf_free+0x98/0xac [mt76_usb])
+[ 67.247302] r4:00000001 r3:00000001
+[ 67.252468] [<7f63976c>] (mt76u_buf_free [mt76_usb]) from [<7f639ef8>] (mt76u_queues_deinit+0x44/0x100 [mt76_usb])
+[ 67.266102] r8:b8fe8600 r7:b5dac480 r6:b5dace20 r5:00000001 r4:00000000 r3:00000080
+[ 67.277132] [<7f639eb4>] (mt76u_queues_deinit [mt76_usb]) from [<7f65c040>] (mt76x0u_cleanup+0x40/0x4c [mt76x0u])
+[ 67.290737] r7:b5dac480 r6:b8fe8600 r5:ffffffea r4:b5dace20
+[ 67.298069] [<7f65c000>] (mt76x0u_cleanup [mt76x0u]) from [<7f65c564>] (mt76x0u_probe+0x1f0/0x354 [mt76x0u])
+[ 67.311174] r4:b5dace20 r3:00000000
+[ 67.316312] [<7f65c374>] (mt76x0u_probe [mt76x0u]) from [<805e0b6c>] (usb_probe_interface+0x104/0x240)
+[ 67.328915] r7:00000000 r6:7f65e034 r5:b6634800 r4:b8fe8620
+[ 67.336276] [<805e0a68>] (usb_probe_interface) from [<8056a8bc>] (really_probe+0x224/0x2f8)
+[ 67.347965] r10:b65f0a00 r9:00000019 r8:7f65e034 r7:80d3e124 r6:00000000 r5:80d3e120
+[ 67.359175] r4:b8fe8620 r3:805e0a68
+[ 67.364384] [<8056a698>] (really_probe) from [<8056ab60>] (driver_probe_device+0x6c/0x180)
+[ 67.375974] r10:b65f0a00 r9:7f65e2c0 r8:b8fe8620 r7:00000000 r6:7f65e034 r5:7f65e034
+[ 67.387170] r4:b8fe8620 r3:00000000
+[ 67.392378] [<8056aaf4>] (driver_probe_device) from [<8056ad54>] (__driver_attach+0xe0/0xe4)
+[ 67.404097] r9:7f65e2c0 r8:7f65d22c r7:00000000 r6:b8fe8654 r5:7f65e034 r4:b8fe8620
+[ 67.415122] [<8056ac74>] (__driver_attach) from [<8056880c>] (bus_for_each_dev+0x68/0xa0)
+[ 67.426628] r6:8056ac74 r5:7f65e034 r4:00000000 r3:00000027
+[ 67.434017] [<805687a4>] (bus_for_each_dev) from [<8056a1cc>] (driver_attach+0x28/0x30)
+[ 67.445394] r6:80c6ddc8 r5:b7368f80 r4:7f65e034
+[ 67.451703] [<8056a1a4>] (driver_attach) from [<80569c24>] (bus_add_driver+0x194/0x21c)
+[ 67.463081] [<80569a90>] (bus_add_driver) from [<8056b504>] (driver_register+0x8c/0x124)
+[ 67.474560] r7:80c6ddc8 r6:7f65e034 r5:00000000 r4:7f65e034
+[ 67.481964] [<8056b478>] (driver_register) from [<805df510>] (usb_register_driver+0x74/0x140)
+[ 67.493901] r5:00000000 r4:7f65e000
+[ 67.499131] [<805df49c>] (usb_register_driver) from [<7f661024>] (mt76x0_driver_init+0x24/0x1000 [mt76x0u])
+[ 67.512258] r9:00000001 r8:7f65e308 r7:00000000 r6:80c08d48 r5:7f661000 r4:7f65e2c0
+[ 67.523404] [<7f661000>] (mt76x0_driver_init [mt76x0u]) from [<80102f6c>] (do_one_initcall+0x4c/0x210)
+[ 67.536142] [<80102f20>] (do_one_initcall) from [<801ae63c>] (do_init_module+0x6c/0x21c)
+[ 67.547639] r8:7f65e308 r7:80c08d48 r6:b65f0ac0 r5:7f65e2c0 r4:7f65e2c0
+[ 67.556129] [<801ae5d0>] (do_init_module) from [<801ad68c>] (load_module+0x1d10/0x2304)
+
+Fixes: b40b15e1521f ("mt76: add usb support to mt76 layer")
+Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/wireless/mediatek/mt76/usb.c | 11 ++---------
+ 1 file changed, 2 insertions(+), 9 deletions(-)
+
+diff --git a/drivers/net/wireless/mediatek/mt76/usb.c b/drivers/net/wireless/mediatek/mt76/usb.c
+index 79e59f2379a2..8d40e92fb6f2 100644
+--- a/drivers/net/wireless/mediatek/mt76/usb.c
++++ b/drivers/net/wireless/mediatek/mt76/usb.c
+@@ -796,16 +796,9 @@ int mt76u_alloc_queues(struct mt76_dev *dev)
+
+ err = mt76u_alloc_rx(dev);
+ if (err < 0)
+- goto err;
+-
+- err = mt76u_alloc_tx(dev);
+- if (err < 0)
+- goto err;
++ return err;
+
+- return 0;
+-err:
+- mt76u_queues_deinit(dev);
+- return err;
++ return mt76u_alloc_tx(dev);
+ }
+ EXPORT_SYMBOL_GPL(mt76u_alloc_queues);
+
+--
+2.19.1
+
--- /dev/null
+From 708a8b1cae5f647a937abad3e5b4834a936f941c Mon Sep 17 00:00:00 2001
+From: Stanislaw Gruszka <sgruszka@redhat.com>
+Date: Tue, 22 Jan 2019 13:47:54 +0100
+Subject: mt7601u: bump supported EEPROM version
+
+[ Upstream commit 3bd1505fed71d834f45e87b32ff07157fdda47e0 ]
+
+As reported by Michael eeprom 0d is supported and work with the driver.
+
+Dump of /sys/kernel/debug/ieee80211/phy1/mt7601u/eeprom_param
+with 0d EEPORM looks like this:
+
+RSSI offset: 0 0
+Reference temp: f9
+LNA gain: 8
+Reg channels: 1-14
+Per rate power:
+ raw:05 bw20:05 bw40:05
+ raw:05 bw20:05 bw40:05
+ raw:03 bw20:03 bw40:03
+ raw:03 bw20:03 bw40:03
+ raw:04 bw20:04 bw40:04
+ raw:00 bw20:00 bw40:00
+ raw:00 bw20:00 bw40:00
+ raw:00 bw20:00 bw40:00
+ raw:02 bw20:02 bw40:02
+ raw:00 bw20:00 bw40:00
+Per channel power:
+ tx_power ch1:09 ch2:09
+ tx_power ch3:0a ch4:0a
+ tx_power ch5:0a ch6:0a
+ tx_power ch7:0b ch8:0b
+ tx_power ch9:0b ch10:0b
+ tx_power ch11:0b ch12:0b
+ tx_power ch13:0b ch14:0b
+
+Reported-and-tested-by: Michael <ZeroBeat@gmx.de>
+Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
+Acked-by: Jakub Kicinski <kubakici@wp.pl>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/wireless/mediatek/mt7601u/eeprom.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/net/wireless/mediatek/mt7601u/eeprom.h b/drivers/net/wireless/mediatek/mt7601u/eeprom.h
+index 662d12703b69..57b503ae63f1 100644
+--- a/drivers/net/wireless/mediatek/mt7601u/eeprom.h
++++ b/drivers/net/wireless/mediatek/mt7601u/eeprom.h
+@@ -17,7 +17,7 @@
+
+ struct mt7601u_dev;
+
+-#define MT7601U_EE_MAX_VER 0x0c
++#define MT7601U_EE_MAX_VER 0x0d
+ #define MT7601U_EEPROM_SIZE 256
+
+ #define MT7601U_DEFAULT_TX_POWER 6
+--
+2.19.1
+
--- /dev/null
+From 4fb2adb5b81aaea3f1e1f5e936f4355b444977a4 Mon Sep 17 00:00:00 2001
+From: Brian Norris <briannorris@chromium.org>
+Date: Thu, 14 Feb 2019 16:31:29 -0800
+Subject: mwifiex: don't advertise IBSS features without FW support
+
+[ Upstream commit 6f21ab30469d670de620f758330aca9f3433f693 ]
+
+As it is, doing something like
+
+ # iw phy phy0 interface add foobar type ibss
+
+on a firmware that doesn't have ad-hoc support just yields failures of
+HostCmd_CMD_SET_BSS_MODE, which happened to return a '-1' error code
+(-EPERM? not really right...) and sometimes may even crash the firmware
+along the way.
+
+Let's parse the firmware capability flag while registering the wiphy, so
+we don't allow attempting IBSS at all, and we get a proper -EOPNOTSUPP
+from nl80211 instead.
+
+Fixes: e267e71e68ae ("mwifiex: Disable adhoc feature based on firmware capability")
+Signed-off-by: Brian Norris <briannorris@chromium.org>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/wireless/marvell/mwifiex/cfg80211.c | 10 +++++++---
+ 1 file changed, 7 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+index adc88433faa8..2d87ebbfa4da 100644
+--- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
++++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+@@ -4282,11 +4282,13 @@ int mwifiex_register_cfg80211(struct mwifiex_adapter *adapter)
+ wiphy->mgmt_stypes = mwifiex_mgmt_stypes;
+ wiphy->max_remain_on_channel_duration = 5000;
+ wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
+- BIT(NL80211_IFTYPE_ADHOC) |
+ BIT(NL80211_IFTYPE_P2P_CLIENT) |
+ BIT(NL80211_IFTYPE_P2P_GO) |
+ BIT(NL80211_IFTYPE_AP);
+
++ if (ISSUPP_ADHOC_ENABLED(adapter->fw_cap_info))
++ wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
++
+ wiphy->bands[NL80211_BAND_2GHZ] = &mwifiex_band_2ghz;
+ if (adapter->config_bands & BAND_A)
+ wiphy->bands[NL80211_BAND_5GHZ] = &mwifiex_band_5ghz;
+@@ -4346,11 +4348,13 @@ int mwifiex_register_cfg80211(struct mwifiex_adapter *adapter)
+ wiphy->available_antennas_tx = BIT(adapter->number_of_antenna) - 1;
+ wiphy->available_antennas_rx = BIT(adapter->number_of_antenna) - 1;
+
+- wiphy->features |= NL80211_FEATURE_HT_IBSS |
+- NL80211_FEATURE_INACTIVITY_TIMER |
++ wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER |
+ NL80211_FEATURE_LOW_PRIORITY_SCAN |
+ NL80211_FEATURE_NEED_OBSS_SCAN;
+
++ if (ISSUPP_ADHOC_ENABLED(adapter->fw_cap_info))
++ wiphy->features |= NL80211_FEATURE_HT_IBSS;
++
+ if (ISSUPP_RANDOM_MAC(adapter->fw_cap_info))
+ wiphy->features |= NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
+ NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
+--
+2.19.1
+
--- /dev/null
+From 8c71f4771d4741642ee2aab0681d0d277823f0d4 Mon Sep 17 00:00:00 2001
+From: Andrew Lunn <andrew@lunn.ch>
+Date: Sat, 23 Feb 2019 17:43:56 +0100
+Subject: net: dsa: mv88e6xxx: Add lockdep classes to fix false positive splat
+
+[ Upstream commit f6d9758b12660484b6639364cc406da92a918c96 ]
+
+The following false positive lockdep splat has been observed.
+
+======================================================
+WARNING: possible circular locking dependency detected
+4.20.0+ #302 Not tainted
+------------------------------------------------------
+systemd-udevd/160 is trying to acquire lock:
+edea6080 (&chip->reg_lock){+.+.}, at: __setup_irq+0x640/0x704
+
+but task is already holding lock:
+edff0340 (&desc->request_mutex){+.+.}, at: __setup_irq+0xa0/0x704
+
+which lock already depends on the new lock.
+
+the existing dependency chain (in reverse order) is:
+
+-> #1 (&desc->request_mutex){+.+.}:
+ mutex_lock_nested+0x1c/0x24
+ __setup_irq+0xa0/0x704
+ request_threaded_irq+0xd0/0x150
+ mv88e6xxx_probe+0x41c/0x694 [mv88e6xxx]
+ mdio_probe+0x2c/0x54
+ really_probe+0x200/0x2c4
+ driver_probe_device+0x5c/0x174
+ __driver_attach+0xd8/0xdc
+ bus_for_each_dev+0x58/0x7c
+ bus_add_driver+0xe4/0x1f0
+ driver_register+0x7c/0x110
+ mdio_driver_register+0x24/0x58
+ do_one_initcall+0x74/0x2e8
+ do_init_module+0x60/0x1d0
+ load_module+0x1968/0x1ff4
+ sys_finit_module+0x8c/0x98
+ ret_fast_syscall+0x0/0x28
+ 0xbedf2ae8
+
+-> #0 (&chip->reg_lock){+.+.}:
+ __mutex_lock+0x50/0x8b8
+ mutex_lock_nested+0x1c/0x24
+ __setup_irq+0x640/0x704
+ request_threaded_irq+0xd0/0x150
+ mv88e6xxx_g2_irq_setup+0xcc/0x1b4 [mv88e6xxx]
+ mv88e6xxx_probe+0x44c/0x694 [mv88e6xxx]
+ mdio_probe+0x2c/0x54
+ really_probe+0x200/0x2c4
+ driver_probe_device+0x5c/0x174
+ __driver_attach+0xd8/0xdc
+ bus_for_each_dev+0x58/0x7c
+ bus_add_driver+0xe4/0x1f0
+ driver_register+0x7c/0x110
+ mdio_driver_register+0x24/0x58
+ do_one_initcall+0x74/0x2e8
+ do_init_module+0x60/0x1d0
+ load_module+0x1968/0x1ff4
+ sys_finit_module+0x8c/0x98
+ ret_fast_syscall+0x0/0x28
+ 0xbedf2ae8
+
+other info that might help us debug this:
+
+ Possible unsafe locking scenario:
+
+ CPU0 CPU1
+ ---- ----
+ lock(&desc->request_mutex);
+ lock(&chip->reg_lock);
+ lock(&desc->request_mutex);
+ lock(&chip->reg_lock);
+
+&desc->request_mutex refer to two different mutex. #1 is the GPIO for
+the chip interrupt. #2 is the chained interrupt between global 1 and
+global 2.
+
+Add lockdep classes to the GPIO interrupt to avoid this.
+
+Reported-by: Russell King <rmk+kernel@armlinux.org.uk>
+Signed-off-by: Andrew Lunn <andrew@lunn.ch>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/dsa/mv88e6xxx/chip.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
+index c078c791f481..dabe89968a78 100644
+--- a/drivers/net/dsa/mv88e6xxx/chip.c
++++ b/drivers/net/dsa/mv88e6xxx/chip.c
+@@ -442,12 +442,20 @@ out_mapping:
+
+ static int mv88e6xxx_g1_irq_setup(struct mv88e6xxx_chip *chip)
+ {
++ static struct lock_class_key lock_key;
++ static struct lock_class_key request_key;
+ int err;
+
+ err = mv88e6xxx_g1_irq_setup_common(chip);
+ if (err)
+ return err;
+
++ /* These lock classes tells lockdep that global 1 irqs are in
++ * a different category than their parent GPIO, so it won't
++ * report false recursion.
++ */
++ irq_set_lockdep_class(chip->irq, &lock_key, &request_key);
++
+ err = request_threaded_irq(chip->irq, NULL,
+ mv88e6xxx_g1_irq_thread_fn,
+ IRQF_ONESHOT,
+--
+2.19.1
+
--- /dev/null
+From cb43d1468ff100a42287ee68c4e292676cd1f9eb Mon Sep 17 00:00:00 2001
+From: Russell King <rmk+kernel@armlinux.org.uk>
+Date: Fri, 8 Feb 2019 15:35:43 +0000
+Subject: net: marvell: mvpp2: fix stuck in-band SGMII negotiation
+
+[ Upstream commit 316734fdcf70900a83065360cff11a5826919067 ]
+
+It appears that the mvpp22 can get stuck with SGMII negotiation. The
+symptoms are that in-band negotiation never completes and the partner
+(eg, PHY) never reports SGMII link up, or if it supports negotiation
+bypass, goes into negotiation bypass mode (which will happen when the
+PHY sees that the MAC is alive but gets no response.)
+
+Triggering the PHY end of the link to re-negotiate results in the
+bypass bit clearing on the PHY, and then re-setting - indicating that
+the problem is at the mvpp22 GMAC end.
+
+Asserting the GMAC reset and de-asserting it resolves the issue.
+Arrange to assert the GMAC reset at probe time, and deassert it only
+after we have configured the GMAC for the appropriate mode. This
+resolves the issue.
+
+Tested-by: Sven Auhagen <sven.auhagen@voleatech.de>
+Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 17 +++++++++++------
+ 1 file changed, 11 insertions(+), 6 deletions(-)
+
+diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+index f8e4808a8317..9988c89ed9fd 100644
+--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
++++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+@@ -1372,13 +1372,9 @@ static void mvpp2_port_reset(struct mvpp2_port *port)
+ for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_regs); i++)
+ mvpp2_read_count(port, &mvpp2_ethtool_regs[i]);
+
+- val = readl(port->base + MVPP2_GMAC_CTRL_2_REG) &
+- ~MVPP2_GMAC_PORT_RESET_MASK;
++ val = readl(port->base + MVPP2_GMAC_CTRL_2_REG) |
++ MVPP2_GMAC_PORT_RESET_MASK;
+ writel(val, port->base + MVPP2_GMAC_CTRL_2_REG);
+-
+- while (readl(port->base + MVPP2_GMAC_CTRL_2_REG) &
+- MVPP2_GMAC_PORT_RESET_MASK)
+- continue;
+ }
+
+ /* Change maximum receive size of the port */
+@@ -4445,12 +4441,15 @@ static void mvpp2_gmac_config(struct mvpp2_port *port, unsigned int mode,
+ const struct phylink_link_state *state)
+ {
+ u32 an, ctrl0, ctrl2, ctrl4;
++ u32 old_ctrl2;
+
+ an = readl(port->base + MVPP2_GMAC_AUTONEG_CONFIG);
+ ctrl0 = readl(port->base + MVPP2_GMAC_CTRL_0_REG);
+ ctrl2 = readl(port->base + MVPP2_GMAC_CTRL_2_REG);
+ ctrl4 = readl(port->base + MVPP22_GMAC_CTRL_4_REG);
+
++ old_ctrl2 = ctrl2;
++
+ /* Force link down */
+ an &= ~MVPP2_GMAC_FORCE_LINK_PASS;
+ an |= MVPP2_GMAC_FORCE_LINK_DOWN;
+@@ -4523,6 +4522,12 @@ static void mvpp2_gmac_config(struct mvpp2_port *port, unsigned int mode,
+ writel(ctrl2, port->base + MVPP2_GMAC_CTRL_2_REG);
+ writel(ctrl4, port->base + MVPP22_GMAC_CTRL_4_REG);
+ writel(an, port->base + MVPP2_GMAC_AUTONEG_CONFIG);
++
++ if (old_ctrl2 & MVPP2_GMAC_PORT_RESET_MASK) {
++ while (readl(port->base + MVPP2_GMAC_CTRL_2_REG) &
++ MVPP2_GMAC_PORT_RESET_MASK)
++ continue;
++ }
+ }
+
+ static void mvpp2_mac_config(struct net_device *dev, unsigned int mode,
+--
+2.19.1
+
--- /dev/null
+From 8d317aacffb7b49aa474ea40652d00142866e90d Mon Sep 17 00:00:00 2001
+From: Tonghao Zhang <xiangxia.m.yue@gmail.com>
+Date: Mon, 4 Mar 2019 00:27:15 -0800
+Subject: net/mlx5: Avoid panic when setting vport mac, getting vport config
+
+[ Upstream commit 6e77c413e8e73d0f36b5358b601389d75ec4451c ]
+
+If we try to set VFs mac address on a VF (not PF) net device,
+the kernel will be crash. The commands are show as below:
+
+$ echo 2 > /sys/class/net/$MLX_PF0/device/sriov_numvfs
+$ ip link set $MLX_VF0 vf 0 mac 00:11:22:33:44:00
+
+[exception RIP: mlx5_eswitch_set_vport_mac+41]
+[ffffb8b7079e3688] do_setlink at ffffffff8f67f85b
+[ffffb8b7079e37a8] __rtnl_newlink at ffffffff8f683778
+[ffffb8b7079e3b68] rtnl_newlink at ffffffff8f683a63
+[ffffb8b7079e3b90] rtnetlink_rcv_msg at ffffffff8f67d812
+[ffffb8b7079e3c10] netlink_rcv_skb at ffffffff8f6b88ab
+[ffffb8b7079e3c60] netlink_unicast at ffffffff8f6b808f
+[ffffb8b7079e3ca0] netlink_sendmsg at ffffffff8f6b8412
+[ffffb8b7079e3d18] sock_sendmsg at ffffffff8f6452f6
+[ffffb8b7079e3d30] ___sys_sendmsg at ffffffff8f645860
+[ffffb8b7079e3eb0] __sys_sendmsg at ffffffff8f647a38
+[ffffb8b7079e3f38] do_syscall_64 at ffffffff8f00401b
+[ffffb8b7079e3f50] entry_SYSCALL_64_after_hwframe at ffffffff8f80008c
+
+and
+
+[exception RIP: mlx5_eswitch_get_vport_config+12]
+[ffffa70607e57678] mlx5e_get_vf_config at ffffffffc03c7f8f [mlx5_core]
+[ffffa70607e57688] do_setlink at ffffffffbc67fa59
+[ffffa70607e577a8] __rtnl_newlink at ffffffffbc683778
+[ffffa70607e57b68] rtnl_newlink at ffffffffbc683a63
+[ffffa70607e57b90] rtnetlink_rcv_msg at ffffffffbc67d812
+[ffffa70607e57c10] netlink_rcv_skb at ffffffffbc6b88ab
+[ffffa70607e57c60] netlink_unicast at ffffffffbc6b808f
+[ffffa70607e57ca0] netlink_sendmsg at ffffffffbc6b8412
+[ffffa70607e57d18] sock_sendmsg at ffffffffbc6452f6
+[ffffa70607e57d30] ___sys_sendmsg at ffffffffbc645860
+[ffffa70607e57eb0] __sys_sendmsg at ffffffffbc647a38
+[ffffa70607e57f38] do_syscall_64 at ffffffffbc00401b
+[ffffa70607e57f50] entry_SYSCALL_64_after_hwframe at ffffffffbc80008c
+
+Fixes: a8d70a054a718 ("net/mlx5: E-Switch, Disallow vlan/spoofcheck setup if not being esw manager")
+Cc: Eli Cohen <eli@mellanox.com>
+Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
+Reviewed-by: Roi Dayan <roid@mellanox.com>
+Acked-by: Saeed Mahameed <saeedm@mellanox.com>
+Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/ethernet/mellanox/mlx5/core/eswitch.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+index 886a4a77c47f..26c9f9421901 100644
+--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
++++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+@@ -1797,7 +1797,7 @@ int mlx5_eswitch_set_vport_mac(struct mlx5_eswitch *esw,
+ u64 node_guid;
+ int err = 0;
+
+- if (!MLX5_CAP_GEN(esw->dev, vport_group_manager))
++ if (!esw || !MLX5_CAP_GEN(esw->dev, vport_group_manager))
+ return -EPERM;
+ if (!LEGAL_VPORT(esw, vport) || is_multicast_ether_addr(mac))
+ return -EINVAL;
+@@ -1871,7 +1871,7 @@ int mlx5_eswitch_get_vport_config(struct mlx5_eswitch *esw,
+ {
+ struct mlx5_vport *evport;
+
+- if (!MLX5_CAP_GEN(esw->dev, vport_group_manager))
++ if (!esw || !MLX5_CAP_GEN(esw->dev, vport_group_manager))
+ return -EPERM;
+ if (!LEGAL_VPORT(esw, vport))
+ return -EINVAL;
+--
+2.19.1
+
--- /dev/null
+From aeda77afef9c9a9d52e3353a13073f7ddb39fe23 Mon Sep 17 00:00:00 2001
+From: Tonghao Zhang <xiangxia.m.yue@gmail.com>
+Date: Mon, 4 Mar 2019 00:27:16 -0800
+Subject: net/mlx5: Avoid panic when setting vport rate
+
+[ Upstream commit 24319258660a84dd77f4be026a55b10a12524919 ]
+
+If we try to set VFs rate on a VF (not PF) net device, the kernel
+will be crash. The commands are show as below:
+
+$ echo 2 > /sys/class/net/$MLX_PF0/device/sriov_numvfs
+$ ip link set $MLX_VF0 vf 0 max_tx_rate 2 min_tx_rate 1
+
+If not applied the first patch ("net/mlx5: Avoid panic when setting
+vport mac, getting vport config"), the command:
+
+$ ip link set $MLX_VF0 vf 0 rate 100
+
+can also crash the kernel.
+
+[ 1650.006388] RIP: 0010:mlx5_eswitch_set_vport_rate+0x1f/0x260 [mlx5_core]
+[ 1650.007092] do_setlink+0x982/0xd20
+[ 1650.007129] __rtnl_newlink+0x528/0x7d0
+[ 1650.007374] rtnl_newlink+0x43/0x60
+[ 1650.007407] rtnetlink_rcv_msg+0x2a2/0x320
+[ 1650.007484] netlink_rcv_skb+0xcb/0x100
+[ 1650.007519] netlink_unicast+0x17f/0x230
+[ 1650.007554] netlink_sendmsg+0x2d2/0x3d0
+[ 1650.007592] sock_sendmsg+0x36/0x50
+[ 1650.007625] ___sys_sendmsg+0x280/0x2a0
+[ 1650.007963] __sys_sendmsg+0x58/0xa0
+[ 1650.007998] do_syscall_64+0x5b/0x180
+[ 1650.009438] entry_SYSCALL_64_after_hwframe+0x44/0xa9
+
+Fixes: c9497c98901c ("net/mlx5: Add support for setting VF min rate")
+Cc: Mohamad Haj Yahia <mohamad@mellanox.com>
+Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
+Reviewed-by: Roi Dayan <roid@mellanox.com>
+Acked-by: Saeed Mahameed <saeedm@mellanox.com>
+Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/ethernet/mellanox/mlx5/core/eswitch.c | 13 +++++++++----
+ 1 file changed, 9 insertions(+), 4 deletions(-)
+
+diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+index d6706475a3ba..886a4a77c47f 100644
+--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
++++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+@@ -2044,19 +2044,24 @@ static int normalize_vports_min_rate(struct mlx5_eswitch *esw, u32 divider)
+ int mlx5_eswitch_set_vport_rate(struct mlx5_eswitch *esw, int vport,
+ u32 max_rate, u32 min_rate)
+ {
+- u32 fw_max_bw_share = MLX5_CAP_QOS(esw->dev, max_tsar_bw_share);
+- bool min_rate_supported = MLX5_CAP_QOS(esw->dev, esw_bw_share) &&
+- fw_max_bw_share >= MLX5_MIN_BW_SHARE;
+- bool max_rate_supported = MLX5_CAP_QOS(esw->dev, esw_rate_limit);
+ struct mlx5_vport *evport;
++ u32 fw_max_bw_share;
+ u32 previous_min_rate;
+ u32 divider;
++ bool min_rate_supported;
++ bool max_rate_supported;
+ int err = 0;
+
+ if (!ESW_ALLOWED(esw))
+ return -EPERM;
+ if (!LEGAL_VPORT(esw, vport))
+ return -EINVAL;
++
++ fw_max_bw_share = MLX5_CAP_QOS(esw->dev, max_tsar_bw_share);
++ min_rate_supported = MLX5_CAP_QOS(esw->dev, esw_bw_share) &&
++ fw_max_bw_share >= MLX5_MIN_BW_SHARE;
++ max_rate_supported = MLX5_CAP_QOS(esw->dev, esw_rate_limit);
++
+ if ((min_rate && !min_rate_supported) || (max_rate && !max_rate_supported))
+ return -EOPNOTSUPP;
+
+--
+2.19.1
+
--- /dev/null
+From 98c931501e24aaede53006c4cc3a837dbd122cb5 Mon Sep 17 00:00:00 2001
+From: Heiner Kallweit <hkallweit1@gmail.com>
+Date: Wed, 6 Feb 2019 19:39:52 +0100
+Subject: net: phy: consider latched link-down status in polling mode
+
+[ Upstream commit 93c0970493c71f264e6c3c7caf1ff24a9e1de786 ]
+
+The link status value latches link-down events. To get the current
+status we read the register twice in genphy_update_link(). There's
+a potential risk that we miss a link-down event in polling mode.
+This may cause issues if the user e.g. connects his machine to a
+different network.
+
+On the other hand reading the latched value may cause issues in
+interrupt mode. Following scenario:
+
+- After boot link goes up
+- phy_start() is called triggering an aneg restart, hence link goes
+ down and link-down info is latched.
+- After aneg has finished link goes up and triggers an interrupt.
+ Interrupt handler reads link status, means it reads the latched
+ "link is down" info. But there won't be another interrupt as long
+ as link stays up, therefore phylib will never recognize that link
+ is up.
+
+Deal with both scenarios by reading the register twice in interrupt
+mode only.
+
+Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/phy/phy-c45.c | 10 ++++++++--
+ drivers/net/phy/phy_device.c | 13 +++++++++----
+ 2 files changed, 17 insertions(+), 6 deletions(-)
+
+diff --git a/drivers/net/phy/phy-c45.c b/drivers/net/phy/phy-c45.c
+index e1225545362d..0ba3607585bd 100644
+--- a/drivers/net/phy/phy-c45.c
++++ b/drivers/net/phy/phy-c45.c
+@@ -147,9 +147,15 @@ int genphy_c45_read_link(struct phy_device *phydev, u32 mmd_mask)
+ mmd_mask &= ~BIT(devad);
+
+ /* The link state is latched low so that momentary link
+- * drops can be detected. Do not double-read the status
+- * register if the link is down.
++ * drops can be detected. Do not double-read the status
++ * in polling mode to detect such short link drops.
+ */
++ if (!phy_polling_mode(phydev)) {
++ val = phy_read_mmd(phydev, devad, MDIO_STAT1);
++ if (val < 0)
++ return val;
++ }
++
+ val = phy_read_mmd(phydev, devad, MDIO_STAT1);
+ if (val < 0)
+ return val;
+diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
+index 2c32c795f5dd..8a96d985a52f 100644
+--- a/drivers/net/phy/phy_device.c
++++ b/drivers/net/phy/phy_device.c
+@@ -1503,10 +1503,15 @@ int genphy_update_link(struct phy_device *phydev)
+ {
+ int status;
+
+- /* Do a fake read */
+- status = phy_read(phydev, MII_BMSR);
+- if (status < 0)
+- return status;
++ /* The link state is latched low so that momentary link
++ * drops can be detected. Do not double-read the status
++ * in polling mode to detect such short link drops.
++ */
++ if (!phy_polling_mode(phydev)) {
++ status = phy_read(phydev, MII_BMSR);
++ if (status < 0)
++ return status;
++ }
+
+ /* Read link and autonegotiation status */
+ status = phy_read(phydev, MII_BMSR);
+--
+2.19.1
+
--- /dev/null
+From ee0339bff53190706836e5c7695850ce8c084867 Mon Sep 17 00:00:00 2001
+From: Nathan Chancellor <natechancellor@gmail.com>
+Date: Thu, 7 Mar 2019 21:02:39 -0700
+Subject: net: stmmac: Avoid one more sometimes uninitialized Clang warning
+
+[ Upstream commit 1f5d861f7fefa971b2c6e766f77932c86419a319 ]
+
+When building with -Wsometimes-uninitialized, Clang warns:
+
+drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c:111:2: error: variable
+'ns' is used uninitialized whenever 'if' condition is false
+[-Werror,-Wsometimes-uninitialized]
+drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c:111:2: error: variable
+'ns' is used uninitialized whenever '&&' condition is false
+[-Werror,-Wsometimes-uninitialized]
+
+Clang is concerned with the use of stmmac_do_void_callback (which
+stmmac_get_systime wraps), as it may fail to initialize these values if
+the if condition was ever false (meaning the callback doesn't exist).
+It's not wrong because the callback is what initializes ns. While it's
+unlikely that the callback is going to disappear at some point and make
+that condition false, we can easily avoid this warning by zero
+initializing the variable.
+
+Link: https://github.com/ClangBuiltLinux/linux/issues/384
+Fixes: df103170854e ("net: stmmac: Avoid sometimes uninitialized Clang warnings")
+Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
+Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
+Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
+index 2293e21f789f..cc60b3fb0892 100644
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
+@@ -105,7 +105,7 @@ static int stmmac_get_time(struct ptp_clock_info *ptp, struct timespec64 *ts)
+ struct stmmac_priv *priv =
+ container_of(ptp, struct stmmac_priv, ptp_clock_ops);
+ unsigned long flags;
+- u64 ns;
++ u64 ns = 0;
+
+ spin_lock_irqsave(&priv->ptp_lock, flags);
+ stmmac_get_systime(priv, priv->ptpaddr, &ns);
+--
+2.19.1
+
--- /dev/null
+From e0d8bf746be3f96b112c6e7f234916d707a54438 Mon Sep 17 00:00:00 2001
+From: Nathan Chancellor <natechancellor@gmail.com>
+Date: Thu, 7 Mar 2019 11:00:28 -0700
+Subject: net: stmmac: Avoid sometimes uninitialized Clang warnings
+
+[ Upstream commit df103170854e87124ee7bdd2bca64b178e653f97 ]
+
+When building with -Wsometimes-uninitialized, Clang warns:
+
+drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:495:3: warning: variable 'ns' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
+drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:495:3: warning: variable 'ns' is used uninitialized whenever '&&' condition is false [-Wsometimes-uninitialized]
+drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:532:3: warning: variable 'ns' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
+drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:532:3: warning: variable 'ns' is used uninitialized whenever '&&' condition is false [-Wsometimes-uninitialized]
+drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:741:3: warning: variable 'sec_inc' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
+drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:741:3: warning: variable 'sec_inc' is used uninitialized whenever '&&' condition is false [-Wsometimes-uninitialized]
+
+Clang is concerned with the use of stmmac_do_void_callback (which
+stmmac_get_timestamp and stmmac_config_sub_second_increment wrap),
+as it may fail to initialize these values if the if condition was ever
+false (meaning the callbacks don't exist). It's not wrong because the
+callbacks (get_timestamp and config_sub_second_increment respectively)
+are the ones that initialize the variables. While it's unlikely that the
+callbacks are ever going to disappear and make that condition false, we
+can easily avoid this warning by zero initialize the variables.
+
+Link: https://github.com/ClangBuiltLinux/linux/issues/384
+Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
+Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
+Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+index 43ab9e905bed..886176be818e 100644
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+@@ -474,7 +474,7 @@ static void stmmac_get_tx_hwtstamp(struct stmmac_priv *priv,
+ struct dma_desc *p, struct sk_buff *skb)
+ {
+ struct skb_shared_hwtstamps shhwtstamp;
+- u64 ns;
++ u64 ns = 0;
+
+ if (!priv->hwts_tx_en)
+ return;
+@@ -513,7 +513,7 @@ static void stmmac_get_rx_hwtstamp(struct stmmac_priv *priv, struct dma_desc *p,
+ {
+ struct skb_shared_hwtstamps *shhwtstamp = NULL;
+ struct dma_desc *desc = p;
+- u64 ns;
++ u64 ns = 0;
+
+ if (!priv->hwts_rx_en)
+ return;
+@@ -558,8 +558,8 @@ static int stmmac_hwtstamp_ioctl(struct net_device *dev, struct ifreq *ifr)
+ u32 snap_type_sel = 0;
+ u32 ts_master_en = 0;
+ u32 ts_event_en = 0;
++ u32 sec_inc = 0;
+ u32 value = 0;
+- u32 sec_inc;
+ bool xmac;
+
+ xmac = priv->plat->has_gmac4 || priv->plat->has_xgmac;
+--
+2.19.1
+
--- /dev/null
+From 666969ccfacfe549ebeb3ead362445f21414c77e Mon Sep 17 00:00:00 2001
+From: Chieh-Min Wang <chiehminw@synology.com>
+Date: Tue, 12 Feb 2019 00:59:55 +0100
+Subject: netfilter: conntrack: fix cloned unconfirmed skb->_nfct race in
+ __nf_conntrack_confirm
+
+[ Upstream commit 13f5251fd17088170c18844534682d9cab5ff5aa ]
+
+For bridge(br_flood) or broadcast/multicast packets, they could clone
+skb with unconfirmed conntrack which break the rule that unconfirmed
+skb->_nfct is never shared. With nfqueue running on my system, the race
+can be easily reproduced with following warning calltrace:
+
+[13257.707525] CPU: 0 PID: 12132 Comm: main Tainted: P W 4.4.60 #7744
+[13257.707568] Hardware name: Qualcomm (Flattened Device Tree)
+[13257.714700] [<c021f6dc>] (unwind_backtrace) from [<c021bce8>] (show_stack+0x10/0x14)
+[13257.720253] [<c021bce8>] (show_stack) from [<c0449e10>] (dump_stack+0x94/0xa8)
+[13257.728240] [<c0449e10>] (dump_stack) from [<c022a7e0>] (warn_slowpath_common+0x94/0xb0)
+[13257.735268] [<c022a7e0>] (warn_slowpath_common) from [<c022a898>] (warn_slowpath_null+0x1c/0x24)
+[13257.743519] [<c022a898>] (warn_slowpath_null) from [<c06ee450>] (__nf_conntrack_confirm+0xa8/0x618)
+[13257.752284] [<c06ee450>] (__nf_conntrack_confirm) from [<c0772670>] (ipv4_confirm+0xb8/0xfc)
+[13257.761049] [<c0772670>] (ipv4_confirm) from [<c06e7a60>] (nf_iterate+0x48/0xa8)
+[13257.769725] [<c06e7a60>] (nf_iterate) from [<c06e7af0>] (nf_hook_slow+0x30/0xb0)
+[13257.777108] [<c06e7af0>] (nf_hook_slow) from [<c07f20b4>] (br_nf_post_routing+0x274/0x31c)
+[13257.784486] [<c07f20b4>] (br_nf_post_routing) from [<c06e7a60>] (nf_iterate+0x48/0xa8)
+[13257.792556] [<c06e7a60>] (nf_iterate) from [<c06e7af0>] (nf_hook_slow+0x30/0xb0)
+[13257.800458] [<c06e7af0>] (nf_hook_slow) from [<c07e5580>] (br_forward_finish+0x94/0xa4)
+[13257.808010] [<c07e5580>] (br_forward_finish) from [<c07f22ac>] (br_nf_forward_finish+0x150/0x1ac)
+[13257.815736] [<c07f22ac>] (br_nf_forward_finish) from [<c06e8df0>] (nf_reinject+0x108/0x170)
+[13257.824762] [<c06e8df0>] (nf_reinject) from [<c06ea854>] (nfqnl_recv_verdict+0x3d8/0x420)
+[13257.832924] [<c06ea854>] (nfqnl_recv_verdict) from [<c06e940c>] (nfnetlink_rcv_msg+0x158/0x248)
+[13257.841256] [<c06e940c>] (nfnetlink_rcv_msg) from [<c06e5564>] (netlink_rcv_skb+0x54/0xb0)
+[13257.849762] [<c06e5564>] (netlink_rcv_skb) from [<c06e4ec8>] (netlink_unicast+0x148/0x23c)
+[13257.858093] [<c06e4ec8>] (netlink_unicast) from [<c06e5364>] (netlink_sendmsg+0x2ec/0x368)
+[13257.866348] [<c06e5364>] (netlink_sendmsg) from [<c069fb8c>] (sock_sendmsg+0x34/0x44)
+[13257.874590] [<c069fb8c>] (sock_sendmsg) from [<c06a03dc>] (___sys_sendmsg+0x1ec/0x200)
+[13257.882489] [<c06a03dc>] (___sys_sendmsg) from [<c06a11c8>] (__sys_sendmsg+0x3c/0x64)
+[13257.890300] [<c06a11c8>] (__sys_sendmsg) from [<c0209b40>] (ret_fast_syscall+0x0/0x34)
+
+The original code just triggered the warning but do nothing. It will
+caused the shared conntrack moves to the dying list and the packet be
+droppped (nf_ct_resolve_clash returns NF_DROP for dying conntrack).
+
+- Reproduce steps:
+
++----------------------------+
+| br0(bridge) |
+| |
++-+---------+---------+------+
+ | eth0| | eth1| | eth2|
+ | | | | | |
+ +--+--+ +--+--+ +---+-+
+ | | |
+ | | |
+ +--+-+ +-+--+ +--+-+
+ | PC1| | PC2| | PC3|
+ +----+ +----+ +----+
+
+iptables -A FORWARD -m mark --mark 0x1000000/0x1000000 -j NFQUEUE --queue-num 100 --queue-bypass
+
+ps: Our nfq userspace program will set mark on packets whose connection
+has already been processed.
+
+PC1 sends broadcast packets simulated by hping3:
+
+hping3 --rand-source --udp 192.168.1.255 -i u100
+
+- Broadcast racing flow chart is as follow:
+
+br_handle_frame
+ BR_HOOK(NFPROTO_BRIDGE, NF_BR_PRE_ROUTING, br_handle_frame_finish)
+ // skb->_nfct (unconfirmed conntrack) is constructed at PRE_ROUTING stage
+ br_handle_frame_finish
+ // check if this packet is broadcast
+ br_flood_forward
+ br_flood
+ list_for_each_entry_rcu(p, &br->port_list, list) // iterate through each port
+ maybe_deliver
+ deliver_clone
+ skb = skb_clone(skb)
+ __br_forward
+ BR_HOOK(NFPROTO_BRIDGE, NF_BR_FORWARD,...)
+ // queue in our nfq and received by our userspace program
+ // goto __nf_conntrack_confirm with process context on CPU 1
+ br_pass_frame_up
+ BR_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_IN,...)
+ // goto __nf_conntrack_confirm with softirq context on CPU 0
+
+Because conntrack confirm can happen at both INPUT and POSTROUTING
+stage. So with NFQUEUE running, skb->_nfct with the same unconfirmed
+conntrack could race on different core.
+
+This patch fixes a repeating kernel splat, now it is only displayed
+once.
+
+Signed-off-by: Chieh-Min Wang <chiehminw@synology.com>
+Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ net/netfilter/nf_conntrack_core.c | 14 +++++++++++---
+ 1 file changed, 11 insertions(+), 3 deletions(-)
+
+diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
+index 895171a2e1f1..9a249478abf2 100644
+--- a/net/netfilter/nf_conntrack_core.c
++++ b/net/netfilter/nf_conntrack_core.c
+@@ -901,10 +901,18 @@ __nf_conntrack_confirm(struct sk_buff *skb)
+ * REJECT will give spurious warnings here.
+ */
+
+- /* No external references means no one else could have
+- * confirmed us.
++ /* Another skb with the same unconfirmed conntrack may
++ * win the race. This may happen for bridge(br_flood)
++ * or broadcast/multicast packets do skb_clone with
++ * unconfirmed conntrack.
+ */
+- WARN_ON(nf_ct_is_confirmed(ct));
++ if (unlikely(nf_ct_is_confirmed(ct))) {
++ WARN_ON_ONCE(1);
++ nf_conntrack_double_unlock(hash, reply_hash);
++ local_bh_enable();
++ return NF_DROP;
++ }
++
+ pr_debug("Confirming conntrack %p\n", ct);
+ /* We have to check the DYING flag after unlink to prevent
+ * a race against nf_ct_get_next_corpse() possibly called from
+--
+2.19.1
+
--- /dev/null
+From 41934b967f9122547f0b18e59c825520e8472667 Mon Sep 17 00:00:00 2001
+From: Florian Westphal <fw@strlen.de>
+Date: Thu, 21 Feb 2019 17:09:31 +0100
+Subject: netfilter: conntrack: tcp: only close if RST matches exact sequence
+
+[ Upstream commit be0502a3f2e94211a8809a09ecbc3a017189b8fb ]
+
+TCP resets cause instant transition from established to closed state
+provided the reset is in-window. Endpoints that implement RFC 5961
+require resets to match the next expected sequence number.
+RST segments that are in-window (but that do not match RCV.NXT) are
+ignored, and a "challenge ACK" is sent back.
+
+Main problem for conntrack is that its a middlebox, i.e. whereas an end
+host might have ACK'd SEQ (and would thus accept an RST with this
+sequence number), conntrack might not have seen this ACK (yet).
+
+Therefore we can't simply flag RSTs with non-exact match as invalid.
+
+This updates RST processing as follows:
+
+1. If the connection is in a state other than ESTABLISHED, nothing is
+ changed, RST is subject to normal in-window check.
+
+2. If the RSTs sequence number either matches exactly RCV.NXT,
+ connection state moves to CLOSE.
+
+3. The same applies if the RST sequence number aligns with a previous
+ packet in the same direction.
+
+In all other cases, the connection remains in ESTABLISHED state.
+If the normal-in-window check passes, the timeout will be lowered
+to that of CLOSE.
+
+If the peer sends a challenge ack, connection timeout will be reset.
+
+If the challenge ACK triggers another RST (RST was valid after all),
+this 2nd RST will match expected sequence and conntrack state changes to
+CLOSE.
+
+If no challenge ACK is received, the connection will time out after
+CLOSE seconds (10 seconds by default), just like without this patch.
+
+Packetdrill test case:
+
+0.000 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
+0.000 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
+0.000 bind(3, ..., ...) = 0
+0.000 listen(3, 1) = 0
+
+0.100 < S 0:0(0) win 32792 <mss 1460,sackOK,nop,nop,nop,wscale 7>
+0.100 > S. 0:0(0) ack 1 win 64240 <mss 1460,nop,nop,sackOK,nop,wscale 7>
+0.200 < . 1:1(0) ack 1 win 257
+0.200 accept(3, ..., ...) = 4
+
+// Receive a segment.
+0.210 < P. 1:1001(1000) ack 1 win 46
+0.210 > . 1:1(0) ack 1001
+
+// Application writes 1000 bytes.
+0.250 write(4, ..., 1000) = 1000
+0.250 > P. 1:1001(1000) ack 1001
+
+// First reset, old sequence. Conntrack (correctly) considers this
+// invalid due to failed window validation (regardless of this patch).
+0.260 < R 2:2(0) ack 1001 win 260
+
+// 2nd reset, but too far ahead sequence. Same: correctly handled
+// as invalid.
+0.270 < R 99990001:99990001(0) ack 1001 win 260
+
+// in-window, but not exact sequence.
+// Current Linux kernels might reply with a challenge ack, and do not
+// remove connection.
+// Without this patch, conntrack state moves to CLOSE.
+// With patch, timeout is lowered like CLOSE, but connection stays
+// in ESTABLISHED state.
+0.280 < R 1010:1010(0) ack 1001 win 260
+
+// Expect challenge ACK
+0.281 > . 1001:1001(0) ack 1001 win 501
+
+// With or without this patch, RST will cause connection
+// to move to CLOSE (sequence number matches)
+// 0.282 < R 1001:1001(0) ack 1001 win 260
+
+// ACK
+0.300 < . 1001:1001(0) ack 1001 win 257
+
+// more data could be exchanged here, connection
+// is still established
+
+// Client closes the connection.
+0.610 < F. 1001:1001(0) ack 1001 win 260
+0.650 > . 1001:1001(0) ack 1002
+
+// Close the connection without reading outstanding data
+0.700 close(4) = 0
+
+// so one more reset. Will be deemed acceptable with patch as well:
+// connection is already closing.
+0.701 > R. 1001:1001(0) ack 1002 win 501
+// End packetdrill test case.
+
+With patch, this generates following conntrack events:
+ [NEW] 120 SYN_SENT src=10.0.2.1 dst=10.0.0.1 sport=5437 dport=80 [UNREPLIED]
+[UPDATE] 60 SYN_RECV src=10.0.2.1 dst=10.0.0.1 sport=5437 dport=80
+[UPDATE] 432000 ESTABLISHED src=10.0.2.1 dst=10.0.0.1 sport=5437 dport=80 [ASSURED]
+[UPDATE] 120 FIN_WAIT src=10.0.2.1 dst=10.0.0.1 sport=5437 dport=80 [ASSURED]
+[UPDATE] 60 CLOSE_WAIT src=10.0.2.1 dst=10.0.0.1 sport=5437 dport=80 [ASSURED]
+[UPDATE] 10 CLOSE src=10.0.2.1 dst=10.0.0.1 sport=5437 dport=80 [ASSURED]
+
+Without patch, first RST moves connection to close, whereas socket state
+does not change until FIN is received.
+ [NEW] 120 SYN_SENT src=10.0.2.1 dst=10.0.0.1 sport=5141 dport=80 [UNREPLIED]
+[UPDATE] 60 SYN_RECV src=10.0.2.1 dst=10.0.0.1 sport=5141 dport=80
+[UPDATE] 432000 ESTABLISHED src=10.0.2.1 dst=10.0.0.1 sport=5141 dport=80 [ASSURED]
+[UPDATE] 10 CLOSE src=10.0.2.1 dst=10.0.0.1 sport=5141 dport=80 [ASSURED]
+
+Cc: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
+Signed-off-by: Florian Westphal <fw@strlen.de>
+Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ net/netfilter/nf_conntrack_proto_tcp.c | 50 ++++++++++++++++++++------
+ 1 file changed, 40 insertions(+), 10 deletions(-)
+
+diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
+index 247b89784a6f..842f3f86fb2e 100644
+--- a/net/netfilter/nf_conntrack_proto_tcp.c
++++ b/net/netfilter/nf_conntrack_proto_tcp.c
+@@ -769,6 +769,12 @@ static int tcp_error(struct net *net, struct nf_conn *tmpl,
+ return NF_ACCEPT;
+ }
+
++static bool nf_conntrack_tcp_established(const struct nf_conn *ct)
++{
++ return ct->proto.tcp.state == TCP_CONNTRACK_ESTABLISHED &&
++ test_bit(IPS_ASSURED_BIT, &ct->status);
++}
++
+ /* Returns verdict for packet, or -1 for invalid. */
+ static int tcp_packet(struct nf_conn *ct,
+ const struct sk_buff *skb,
+@@ -963,16 +969,38 @@ static int tcp_packet(struct nf_conn *ct,
+ new_state = TCP_CONNTRACK_ESTABLISHED;
+ break;
+ case TCP_CONNTRACK_CLOSE:
+- if (index == TCP_RST_SET
+- && (ct->proto.tcp.seen[!dir].flags & IP_CT_TCP_FLAG_MAXACK_SET)
+- && before(ntohl(th->seq), ct->proto.tcp.seen[!dir].td_maxack)) {
+- /* Invalid RST */
+- spin_unlock_bh(&ct->lock);
+- nf_ct_l4proto_log_invalid(skb, ct, "invalid rst");
+- return -NF_ACCEPT;
++ if (index != TCP_RST_SET)
++ break;
++
++ if (ct->proto.tcp.seen[!dir].flags & IP_CT_TCP_FLAG_MAXACK_SET) {
++ u32 seq = ntohl(th->seq);
++
++ if (before(seq, ct->proto.tcp.seen[!dir].td_maxack)) {
++ /* Invalid RST */
++ spin_unlock_bh(&ct->lock);
++ nf_ct_l4proto_log_invalid(skb, ct, "invalid rst");
++ return -NF_ACCEPT;
++ }
++
++ if (!nf_conntrack_tcp_established(ct) ||
++ seq == ct->proto.tcp.seen[!dir].td_maxack)
++ break;
++
++ /* Check if rst is part of train, such as
++ * foo:80 > bar:4379: P, 235946583:235946602(19) ack 42
++ * foo:80 > bar:4379: R, 235946602:235946602(0) ack 42
++ */
++ if (ct->proto.tcp.last_index == TCP_ACK_SET &&
++ ct->proto.tcp.last_dir == dir &&
++ seq == ct->proto.tcp.last_end)
++ break;
++
++ /* ... RST sequence number doesn't match exactly, keep
++ * established state to allow a possible challenge ACK.
++ */
++ new_state = old_state;
+ }
+- if (index == TCP_RST_SET
+- && ((test_bit(IPS_SEEN_REPLY_BIT, &ct->status)
++ if (((test_bit(IPS_SEEN_REPLY_BIT, &ct->status)
+ && ct->proto.tcp.last_index == TCP_SYN_SET)
+ || (!test_bit(IPS_ASSURED_BIT, &ct->status)
+ && ct->proto.tcp.last_index == TCP_ACK_SET))
+@@ -988,7 +1016,7 @@ static int tcp_packet(struct nf_conn *ct,
+ * segments we ignored. */
+ goto in_window;
+ }
+- /* Just fall through */
++ break;
+ default:
+ /* Keep compilers happy. */
+ break;
+@@ -1023,6 +1051,8 @@ static int tcp_packet(struct nf_conn *ct,
+ if (ct->proto.tcp.retrans >= tn->tcp_max_retrans &&
+ timeouts[new_state] > timeouts[TCP_CONNTRACK_RETRANS])
+ timeout = timeouts[TCP_CONNTRACK_RETRANS];
++ else if (unlikely(index == TCP_RST_SET))
++ timeout = timeouts[TCP_CONNTRACK_CLOSE];
+ else if ((ct->proto.tcp.seen[0].flags | ct->proto.tcp.seen[1].flags) &
+ IP_CT_TCP_FLAG_DATA_UNACKNOWLEDGED &&
+ timeouts[new_state] > timeouts[TCP_CONNTRACK_UNACK])
+--
+2.19.1
+
--- /dev/null
+From b16ce4b339de6afa6a2fc02e7357e788671120cd Mon Sep 17 00:00:00 2001
+From: Li RongQing <lirongqing@baidu.com>
+Date: Tue, 26 Feb 2019 17:13:56 +0800
+Subject: netfilter: nf_tables: check the result of dereferencing
+ base_chain->stats
+
+[ Upstream commit a9f5e78c403d2d62ade4f4c85040efc85f4049b8 ]
+
+Check the result of dereferencing base_chain->stats, instead of result
+of this_cpu_ptr with NULL.
+
+base_chain->stats maybe be changed to NULL when a chain is updated and a
+new NULL counter can be attached.
+
+And we do not need to check returning of this_cpu_ptr since
+base_chain->stats is from percpu allocator if it is non-NULL,
+this_cpu_ptr returns a valid value.
+
+And fix two sparse error by replacing rcu_access_pointer and
+rcu_dereference with READ_ONCE under rcu_read_lock.
+
+Thanks for Eric's help to finish this patch.
+
+Fixes: 009240940e84c1 ("netfilter: nf_tables: don't assume chain stats are set when jumplabel is set")
+Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
+Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
+Signed-off-by: Li RongQing <lirongqing@baidu.com>
+Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ net/netfilter/nf_tables_core.c | 14 ++++++++------
+ 1 file changed, 8 insertions(+), 6 deletions(-)
+
+diff --git a/net/netfilter/nf_tables_core.c b/net/netfilter/nf_tables_core.c
+index 60f258f2c707..a3850414dba2 100644
+--- a/net/netfilter/nf_tables_core.c
++++ b/net/netfilter/nf_tables_core.c
+@@ -98,21 +98,23 @@ static noinline void nft_update_chain_stats(const struct nft_chain *chain,
+ const struct nft_pktinfo *pkt)
+ {
+ struct nft_base_chain *base_chain;
++ struct nft_stats __percpu *pstats;
+ struct nft_stats *stats;
+
+ base_chain = nft_base_chain(chain);
+- if (!rcu_access_pointer(base_chain->stats))
+- return;
+
+- local_bh_disable();
+- stats = this_cpu_ptr(rcu_dereference(base_chain->stats));
+- if (stats) {
++ rcu_read_lock();
++ pstats = READ_ONCE(base_chain->stats);
++ if (pstats) {
++ local_bh_disable();
++ stats = this_cpu_ptr(pstats);
+ u64_stats_update_begin(&stats->syncp);
+ stats->pkts++;
+ stats->bytes += pkt->skb->len;
+ u64_stats_update_end(&stats->syncp);
++ local_bh_enable();
+ }
+- local_bh_enable();
++ rcu_read_unlock();
+ }
+
+ struct nft_jumpstack {
+--
+2.19.1
+
--- /dev/null
+From 74e44e2db660d8c9fdc3ddaf147db7e87c7ae6b7 Mon Sep 17 00:00:00 2001
+From: Florian Westphal <fw@strlen.de>
+Date: Fri, 11 Jan 2019 14:46:15 +0100
+Subject: netfilter: physdev: relax br_netfilter dependency
+
+[ Upstream commit 8e2f311a68494a6677c1724bdcb10bada21af37c ]
+
+Following command:
+ iptables -D FORWARD -m physdev ...
+causes connectivity loss in some setups.
+
+Reason is that iptables userspace will probe kernel for the module revision
+of the physdev patch, and physdev has an artificial dependency on
+br_netfilter (xt_physdev use makes no sense unless a br_netfilter module
+is loaded).
+
+This causes the "phydev" module to be loaded, which in turn enables the
+"call-iptables" infrastructure.
+
+bridged packets might then get dropped by the iptables ruleset.
+
+The better fix would be to change the "call-iptables" defaults to 0 and
+enforce explicit setting to 1, but that breaks backwards compatibility.
+
+This does the next best thing: add a request_module call to checkentry.
+This was a stray '-D ... -m physdev' won't activate br_netfilter
+anymore.
+
+Signed-off-by: Florian Westphal <fw@strlen.de>
+Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ include/net/netfilter/br_netfilter.h | 1 -
+ net/bridge/br_netfilter_hooks.c | 5 -----
+ net/netfilter/xt_physdev.c | 9 +++++++--
+ 3 files changed, 7 insertions(+), 8 deletions(-)
+
+diff --git a/include/net/netfilter/br_netfilter.h b/include/net/netfilter/br_netfilter.h
+index 74af19c3a8f7..a4ba601b5d04 100644
+--- a/include/net/netfilter/br_netfilter.h
++++ b/include/net/netfilter/br_netfilter.h
+@@ -49,7 +49,6 @@ static inline struct rtable *bridge_parent_rtable(const struct net_device *dev)
+ }
+
+ struct net_device *setup_pre_routing(struct sk_buff *skb);
+-void br_netfilter_enable(void);
+
+ #if IS_ENABLED(CONFIG_IPV6)
+ int br_validate_ipv6(struct net *net, struct sk_buff *skb);
+diff --git a/net/bridge/br_netfilter_hooks.c b/net/bridge/br_netfilter_hooks.c
+index e07a7e62c705..3b0a03b92080 100644
+--- a/net/bridge/br_netfilter_hooks.c
++++ b/net/bridge/br_netfilter_hooks.c
+@@ -884,11 +884,6 @@ static const struct nf_br_ops br_ops = {
+ .br_dev_xmit_hook = br_nf_dev_xmit,
+ };
+
+-void br_netfilter_enable(void)
+-{
+-}
+-EXPORT_SYMBOL_GPL(br_netfilter_enable);
+-
+ /* For br_nf_post_routing, we need (prio = NF_BR_PRI_LAST), because
+ * br_dev_queue_push_xmit is called afterwards */
+ static const struct nf_hook_ops br_nf_ops[] = {
+diff --git a/net/netfilter/xt_physdev.c b/net/netfilter/xt_physdev.c
+index 9d6d67b953ac..05f00fb20b04 100644
+--- a/net/netfilter/xt_physdev.c
++++ b/net/netfilter/xt_physdev.c
+@@ -96,8 +96,7 @@ match_outdev:
+ static int physdev_mt_check(const struct xt_mtchk_param *par)
+ {
+ const struct xt_physdev_info *info = par->matchinfo;
+-
+- br_netfilter_enable();
++ static bool brnf_probed __read_mostly;
+
+ if (!(info->bitmask & XT_PHYSDEV_OP_MASK) ||
+ info->bitmask & ~XT_PHYSDEV_OP_MASK)
+@@ -111,6 +110,12 @@ static int physdev_mt_check(const struct xt_mtchk_param *par)
+ if (par->hook_mask & (1 << NF_INET_LOCAL_OUT))
+ return -EINVAL;
+ }
++
++ if (!brnf_probed) {
++ brnf_probed = true;
++ request_module("br_netfilter");
++ }
++
+ return 0;
+ }
+
+--
+2.19.1
+
--- /dev/null
+From 51d7757551554fcaaea788ad56ad917f57bd757f Mon Sep 17 00:00:00 2001
+From: Jia Guo <guojia12@huawei.com>
+Date: Tue, 5 Mar 2019 15:41:41 -0800
+Subject: ocfs2: fix a panic problem caused by o2cb_ctl
+
+[ Upstream commit cc725ef3cb202ef2019a3c67c8913efa05c3cce6 ]
+
+In the process of creating a node, it will cause NULL pointer
+dereference in kernel if o2cb_ctl failed in the interval (mkdir,
+o2cb_set_node_attribute(node_num)] in function o2cb_add_node.
+
+The node num is initialized to 0 in function o2nm_node_group_make_item,
+o2nm_node_group_drop_item will mistake the node number 0 for a valid
+node number when we delete the node before the node number is set
+correctly. If the local node number of the current host happens to be
+0, cluster->cl_local_node will be set to O2NM_INVALID_NODE_NUM while
+o2hb_thread still running. The panic stack is generated as follows:
+
+ o2hb_thread
+ \-o2hb_do_disk_heartbeat
+ \-o2hb_check_own_slot
+ |-slot = ®->hr_slots[o2nm_this_node()];
+ //o2nm_this_node() return O2NM_INVALID_NODE_NUM
+
+We need to check whether the node number is set when we delete the node.
+
+Link: http://lkml.kernel.org/r/133d8045-72cc-863e-8eae-5013f9f6bc51@huawei.com
+Signed-off-by: Jia Guo <guojia12@huawei.com>
+Reviewed-by: Joseph Qi <jiangqi903@gmail.com>
+Acked-by: Jun Piao <piaojun@huawei.com>
+Cc: Mark Fasheh <mark@fasheh.com>
+Cc: Joel Becker <jlbec@evilplan.org>
+Cc: Junxiao Bi <junxiao.bi@oracle.com>
+Cc: Changwei Ge <ge.changwei@h3c.com>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ fs/ocfs2/cluster/nodemanager.c | 14 ++++++++------
+ 1 file changed, 8 insertions(+), 6 deletions(-)
+
+diff --git a/fs/ocfs2/cluster/nodemanager.c b/fs/ocfs2/cluster/nodemanager.c
+index 0e4166cc23a0..4ac775e32240 100644
+--- a/fs/ocfs2/cluster/nodemanager.c
++++ b/fs/ocfs2/cluster/nodemanager.c
+@@ -621,13 +621,15 @@ static void o2nm_node_group_drop_item(struct config_group *group,
+ struct o2nm_node *node = to_o2nm_node(item);
+ struct o2nm_cluster *cluster = to_o2nm_cluster(group->cg_item.ci_parent);
+
+- o2net_disconnect_node(node);
++ if (cluster->cl_nodes[node->nd_num] == node) {
++ o2net_disconnect_node(node);
+
+- if (cluster->cl_has_local &&
+- (cluster->cl_local_node == node->nd_num)) {
+- cluster->cl_has_local = 0;
+- cluster->cl_local_node = O2NM_INVALID_NODE_NUM;
+- o2net_stop_listening(node);
++ if (cluster->cl_has_local &&
++ (cluster->cl_local_node == node->nd_num)) {
++ cluster->cl_has_local = 0;
++ cluster->cl_local_node = O2NM_INVALID_NODE_NUM;
++ o2net_stop_listening(node);
++ }
+ }
+
+ /* XXX call into net to stop this node from trading messages */
+--
+2.19.1
+
--- /dev/null
+From f6bd90b03050101774a8f8c5134a7c5a6019bca9 Mon Sep 17 00:00:00 2001
+From: Qian Cai <cai@lca.pw>
+Date: Tue, 5 Mar 2019 15:41:24 -0800
+Subject: page_poison: play nicely with KASAN
+
+[ Upstream commit 4117992df66a26fa33908b4969e04801534baab1 ]
+
+KASAN does not play well with the page poisoning (CONFIG_PAGE_POISONING).
+It triggers false positives in the allocation path:
+
+ BUG: KASAN: use-after-free in memchr_inv+0x2ea/0x330
+ Read of size 8 at addr ffff88881f800000 by task swapper/0
+ CPU: 0 PID: 0 Comm: swapper Not tainted 5.0.0-rc1+ #54
+ Call Trace:
+ dump_stack+0xe0/0x19a
+ print_address_description.cold.2+0x9/0x28b
+ kasan_report.cold.3+0x7a/0xb5
+ __asan_report_load8_noabort+0x19/0x20
+ memchr_inv+0x2ea/0x330
+ kernel_poison_pages+0x103/0x3d5
+ get_page_from_freelist+0x15e7/0x4d90
+
+because KASAN has not yet unpoisoned the shadow page for allocation
+before it checks memchr_inv() but only found a stale poison pattern.
+
+Also, false positives in free path,
+
+ BUG: KASAN: slab-out-of-bounds in kernel_poison_pages+0x29e/0x3d5
+ Write of size 4096 at addr ffff8888112cc000 by task swapper/0/1
+ CPU: 5 PID: 1 Comm: swapper/0 Not tainted 5.0.0-rc1+ #55
+ Call Trace:
+ dump_stack+0xe0/0x19a
+ print_address_description.cold.2+0x9/0x28b
+ kasan_report.cold.3+0x7a/0xb5
+ check_memory_region+0x22d/0x250
+ memset+0x28/0x40
+ kernel_poison_pages+0x29e/0x3d5
+ __free_pages_ok+0x75f/0x13e0
+
+due to KASAN adds poisoned redzones around slab objects, but the page
+poisoning needs to poison the whole page.
+
+Link: http://lkml.kernel.org/r/20190114233405.67843-1-cai@lca.pw
+Signed-off-by: Qian Cai <cai@lca.pw>
+Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ mm/page_alloc.c | 2 +-
+ mm/page_poison.c | 4 ++++
+ 2 files changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/mm/page_alloc.c b/mm/page_alloc.c
+index ef99971c13dd..8e6932a140b8 100644
+--- a/mm/page_alloc.c
++++ b/mm/page_alloc.c
+@@ -1922,8 +1922,8 @@ inline void post_alloc_hook(struct page *page, unsigned int order,
+
+ arch_alloc_page(page, order);
+ kernel_map_pages(page, 1 << order, 1);
+- kernel_poison_pages(page, 1 << order, 1);
+ kasan_alloc_pages(page, order);
++ kernel_poison_pages(page, 1 << order, 1);
+ set_page_owner(page, order, gfp_flags);
+ }
+
+diff --git a/mm/page_poison.c b/mm/page_poison.c
+index aa2b3d34e8ea..6cfa8e7d7213 100644
+--- a/mm/page_poison.c
++++ b/mm/page_poison.c
+@@ -6,6 +6,7 @@
+ #include <linux/page_ext.h>
+ #include <linux/poison.h>
+ #include <linux/ratelimit.h>
++#include <linux/kasan.h>
+
+ static bool want_page_poisoning __read_mostly;
+
+@@ -34,7 +35,10 @@ static void poison_page(struct page *page)
+ {
+ void *addr = kmap_atomic(page);
+
++ /* KASAN still think the page is in-use, so skip it. */
++ kasan_disable_current();
+ memset(addr, PAGE_POISON, PAGE_SIZE);
++ kasan_enable_current();
+ kunmap_atomic(addr);
+ }
+
+--
+2.19.1
+
--- /dev/null
+From 45a7b1c72583924f54048a386d44fb98f248446f Mon Sep 17 00:00:00 2001
+From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
+Date: Thu, 28 Feb 2019 13:56:27 -0600
+Subject: PCI/PME: Fix hotplug/sysfs remove deadlock in pcie_pme_remove()
+
+[ Upstream commit 95c80bc6952b6a5badc7b702d23e5bf14d251e7c ]
+
+Dongdong reported a deadlock triggered by a hotplug event during a sysfs
+"remove" operation:
+
+ pciehp 0000:00:0c.0:pcie004: Slot(0-1): Link Up
+ # echo 1 > 0000:00:0c.0/remove
+
+ PME and hotplug share an MSI/MSI-X vector. The sysfs "remove" side is:
+
+ remove_store
+ pci_stop_and_remove_bus_device_locked
+ pci_lock_rescan_remove
+ pci_stop_and_remove_bus_device
+ ...
+ pcie_pme_remove
+ pcie_pme_suspend
+ synchronize_irq # wait for hotplug IRQ handler
+ pci_unlock_rescan_remove
+
+ The hotplug side is:
+
+ pciehp_ist
+ pciehp_handle_presence_or_link_change
+ pciehp_configure_device
+ pci_lock_rescan_remove # wait for pci_unlock_rescan_remove()
+
+ INFO: task bash:10913 blocked for more than 120 seconds.
+
+ # ps -ax |grep D
+ PID TTY STAT TIME COMMAND
+ 10913 ttyAMA0 Ds+ 0:00 -bash
+ 14022 ? D 0:00 [irq/745-pciehp]
+
+ # cat /proc/14022/stack
+ __switch_to+0x94/0xd8
+ pci_lock_rescan_remove+0x20/0x28
+ pciehp_configure_device+0x30/0x140
+ pciehp_handle_presence_or_link_change+0x324/0x458
+ pciehp_ist+0x1dc/0x1e0
+
+ # cat /proc/10913/stack
+ __switch_to+0x94/0xd8
+ synchronize_irq+0x8c/0xc0
+ pcie_pme_suspend+0xa4/0x118
+ pcie_pme_remove+0x20/0x40
+ pcie_port_remove_service+0x3c/0x58
+ ...
+ pcie_port_device_remove+0x2c/0x48
+ pcie_portdrv_remove+0x68/0x78
+ pci_device_remove+0x48/0x120
+ ...
+ pci_stop_bus_device+0x84/0xc0
+ pci_stop_and_remove_bus_device_locked+0x24/0x40
+ remove_store+0xa4/0xb8
+ dev_attr_store+0x44/0x60
+ sysfs_kf_write+0x58/0x80
+
+It is incorrect to call pcie_pme_suspend() from pcie_pme_remove() for two
+reasons.
+
+First, pcie_pme_suspend() calls synchronize_irq(), which will wait for the
+native hotplug interrupt handler as well as for the PME one, because they
+share one IRQ (as per the spec). That may deadlock if hotplug is signaled
+while pcie_pme_remove() is running and the latter calls
+pci_lock_rescan_remove() before the former.
+
+Second, if pcie_pme_suspend() figures out that wakeup needs to be enabled
+for the port, it will return without disabling the interrupt as expected by
+pcie_pme_remove() which was overlooked by commit c7b5a4e6e8fb ("PCI / PM:
+Fix native PME handling during system suspend/resume").
+
+To fix that, rework pcie_pme_remove() to disable the PME interrupt, clear
+its status and prevent the PME worker function from re-enabling it before
+calling free_irq() on it, which should be sufficient.
+
+Fixes: c7b5a4e6e8fb ("PCI / PM: Fix native PME handling during system suspend/resume")
+Link: https://lore.kernel.org/linux-pci/c7697e7c-e1af-13e4-8491-0a3996e6ab5d@huawei.com
+Reported-by: Dongdong Liu <liudongdong3@huawei.com>
+Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+[bhelgaas: add URL and deadlock details from Dongdong]
+Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/pci/pcie/pme.c | 22 +++++++++++++++-------
+ 1 file changed, 15 insertions(+), 7 deletions(-)
+
+diff --git a/drivers/pci/pcie/pme.c b/drivers/pci/pcie/pme.c
+index 3ed67676ea2a..e85c5a8206c4 100644
+--- a/drivers/pci/pcie/pme.c
++++ b/drivers/pci/pcie/pme.c
+@@ -363,6 +363,16 @@ static bool pcie_pme_check_wakeup(struct pci_bus *bus)
+ return false;
+ }
+
++static void pcie_pme_disable_interrupt(struct pci_dev *port,
++ struct pcie_pme_service_data *data)
++{
++ spin_lock_irq(&data->lock);
++ pcie_pme_interrupt_enable(port, false);
++ pcie_clear_root_pme_status(port);
++ data->noirq = true;
++ spin_unlock_irq(&data->lock);
++}
++
+ /**
+ * pcie_pme_suspend - Suspend PCIe PME service device.
+ * @srv: PCIe service device to suspend.
+@@ -387,11 +397,7 @@ static int pcie_pme_suspend(struct pcie_device *srv)
+ return 0;
+ }
+
+- spin_lock_irq(&data->lock);
+- pcie_pme_interrupt_enable(port, false);
+- pcie_clear_root_pme_status(port);
+- data->noirq = true;
+- spin_unlock_irq(&data->lock);
++ pcie_pme_disable_interrupt(port, data);
+
+ synchronize_irq(srv->irq);
+
+@@ -427,9 +433,11 @@ static int pcie_pme_resume(struct pcie_device *srv)
+ */
+ static void pcie_pme_remove(struct pcie_device *srv)
+ {
+- pcie_pme_suspend(srv);
++ struct pcie_pme_service_data *data = get_service_data(srv);
++
++ pcie_pme_disable_interrupt(srv->port, data);
+ free_irq(srv->irq, srv);
+- kfree(get_service_data(srv));
++ kfree(data);
+ }
+
+ static struct pcie_port_service_driver pcie_pme_driver = {
+--
+2.19.1
+
--- /dev/null
+From cfb96dcbe2e461e73228efa22e9698b08fad4afe Mon Sep 17 00:00:00 2001
+From: Wei Li <liwei391@huawei.com>
+Date: Thu, 21 Feb 2019 17:57:16 +0800
+Subject: perf annotate: Fix getting source line failure
+
+[ Upstream commit 11db1ad4513d6205d2519e1a30ff4cef746e3243 ]
+
+The output of "perf annotate -l --stdio xxx" changed since commit 425859ff0de33
+("perf annotate: No need to calculate notes->start twice") removed notes->start
+assignment in symbol__calc_lines(). It will get failed in
+find_address_in_section() from symbol__tty_annotate() subroutine as the
+a2l->addr is wrong. So the annotate summary doesn't report the line number of
+source code correctly.
+
+Before fix:
+
+ liwei@euler:~/main_code/hulk_work/hulk/tools/perf$ cat common_while_1.c
+ void hotspot_1(void)
+ {
+ volatile int i;
+
+ for (i = 0; i < 0x10000000; i++);
+ for (i = 0; i < 0x10000000; i++);
+ for (i = 0; i < 0x10000000; i++);
+ }
+
+ int main(void)
+ {
+ hotspot_1();
+
+ return 0;
+ }
+ liwei@euler:~/main_code/hulk_work/hulk/tools/perf$ gcc common_while_1.c -g -o common_while_1
+
+ liwei@euler:~/main_code/hulk_work/hulk/tools/perf$ sudo ./perf record ./common_while_1
+ [ perf record: Woken up 2 times to write data ]
+ [ perf record: Captured and wrote 0.488 MB perf.data (12498 samples) ]
+ liwei@euler:~/main_code/hulk_work/hulk/tools/perf$ sudo ./perf annotate -l -s hotspot_1 --stdio
+
+ Sorted summary for file /home/liwei/main_code/hulk_work/hulk/tools/perf/common_while_1
+ ----------------------------------------------
+
+ 19.30 common_while_1[32]
+ 19.03 common_while_1[4e]
+ 19.01 common_while_1[16]
+ 5.04 common_while_1[13]
+ 4.99 common_while_1[4b]
+ 4.78 common_while_1[2c]
+ 4.77 common_while_1[10]
+ 4.66 common_while_1[2f]
+ 4.59 common_while_1[51]
+ 4.59 common_while_1[35]
+ 4.52 common_while_1[19]
+ 4.20 common_while_1[56]
+ 0.51 common_while_1[48]
+ Percent | Source code & Disassembly of common_while_1 for cycles:ppp (12480 samples, percent: local period)
+ -----------------------------------------------------------------------------------------------------------------
+ :
+ :
+ :
+ : Disassembly of section .text:
+ :
+ : 00000000000005fa <hotspot_1>:
+ : hotspot_1():
+ : void hotspot_1(void)
+ : {
+ 0.00 : 5fa: push %rbp
+ 0.00 : 5fb: mov %rsp,%rbp
+ : volatile int i;
+ :
+ : for (i = 0; i < 0x10000000; i++);
+ 0.00 : 5fe: movl $0x0,-0x4(%rbp)
+ 0.00 : 605: jmp 610 <hotspot_1+0x16>
+ 0.00 : 607: mov -0x4(%rbp),%eax
+ common_while_1[10] 4.77 : 60a: add $0x1,%eax
+ common_while_1[13] 5.04 : 60d: mov %eax,-0x4(%rbp)
+ common_while_1[16] 19.01 : 610: mov -0x4(%rbp),%eax
+ common_while_1[19] 4.52 : 613: cmp $0xfffffff,%eax
+ 0.00 : 618: jle 607 <hotspot_1+0xd>
+ : for (i = 0; i < 0x10000000; i++);
+ ...
+
+After fix:
+
+ liwei@euler:~/main_code/hulk_work/hulk/tools/perf$ sudo ./perf record ./common_while_1
+ [ perf record: Woken up 2 times to write data ]
+ [ perf record: Captured and wrote 0.488 MB perf.data (12500 samples) ]
+ liwei@euler:~/main_code/hulk_work/hulk/tools/perf$ sudo ./perf annotate -l -s hotspot_1 --stdio
+
+ Sorted summary for file /home/liwei/main_code/hulk_work/hulk/tools/perf/common_while_1
+ ----------------------------------------------
+
+ 33.34 common_while_1.c:5
+ 33.34 common_while_1.c:6
+ 33.32 common_while_1.c:7
+ Percent | Source code & Disassembly of common_while_1 for cycles:ppp (12482 samples, percent: local period)
+ -----------------------------------------------------------------------------------------------------------------
+ :
+ :
+ :
+ : Disassembly of section .text:
+ :
+ : 00000000000005fa <hotspot_1>:
+ : hotspot_1():
+ : void hotspot_1(void)
+ : {
+ 0.00 : 5fa: push %rbp
+ 0.00 : 5fb: mov %rsp,%rbp
+ : volatile int i;
+ :
+ : for (i = 0; i < 0x10000000; i++);
+ 0.00 : 5fe: movl $0x0,-0x4(%rbp)
+ 0.00 : 605: jmp 610 <hotspot_1+0x16>
+ 0.00 : 607: mov -0x4(%rbp),%eax
+ common_while_1.c:5 4.70 : 60a: add $0x1,%eax
+ 4.89 : 60d: mov %eax,-0x4(%rbp)
+ common_while_1.c:5 19.03 : 610: mov -0x4(%rbp),%eax
+ common_while_1.c:5 4.72 : 613: cmp $0xfffffff,%eax
+ 0.00 : 618: jle 607 <hotspot_1+0xd>
+ : for (i = 0; i < 0x10000000; i++);
+ 0.00 : 61a: movl $0x0,-0x4(%rbp)
+ 0.00 : 621: jmp 62c <hotspot_1+0x32>
+ 0.00 : 623: mov -0x4(%rbp),%eax
+ common_while_1.c:6 4.54 : 626: add $0x1,%eax
+ 4.73 : 629: mov %eax,-0x4(%rbp)
+ common_while_1.c:6 19.54 : 62c: mov -0x4(%rbp),%eax
+ common_while_1.c:6 4.54 : 62f: cmp $0xfffffff,%eax
+ ...
+
+Signed-off-by: Wei Li <liwei391@huawei.com>
+Acked-by: Jiri Olsa <jolsa@kernel.org>
+Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
+Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
+Cc: Jin Yao <yao.jin@linux.intel.com>
+Cc: Namhyung Kim <namhyung@kernel.org>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Fixes: 425859ff0de33 ("perf annotate: No need to calculate notes->start twice")
+Link: http://lkml.kernel.org/r/20190221095716.39529-1-liwei391@huawei.com
+Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ tools/perf/util/annotate.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
+index 28cd6a17491b..dfee110b3a58 100644
+--- a/tools/perf/util/annotate.c
++++ b/tools/perf/util/annotate.c
+@@ -1862,6 +1862,7 @@ int symbol__annotate(struct symbol *sym, struct map *map,
+ struct annotation_options *options,
+ struct arch **parch)
+ {
++ struct annotation *notes = symbol__annotation(sym);
+ struct annotate_args args = {
+ .privsize = privsize,
+ .evsel = evsel,
+@@ -1892,6 +1893,7 @@ int symbol__annotate(struct symbol *sym, struct map *map,
+
+ args.ms.map = map;
+ args.ms.sym = sym;
++ notes->start = map__rip_2objdump(map, sym->start);
+
+ return symbol__disassemble(sym, &args);
+ }
+@@ -2746,8 +2748,6 @@ int symbol__annotate2(struct symbol *sym, struct map *map, struct perf_evsel *ev
+
+ symbol__calc_percent(sym, evsel);
+
+- notes->start = map__rip_2objdump(map, sym->start);
+-
+ annotation__set_offsets(notes, size);
+ annotation__mark_jump_targets(notes, sym);
+ annotation__compute_ipc(notes, size);
+--
+2.19.1
+
--- /dev/null
+From de1db37996ee7271f9f184d79050af642af91132 Mon Sep 17 00:00:00 2001
+From: Mathieu Poirier <mathieu.poirier@linaro.org>
+Date: Thu, 31 Jan 2019 11:47:08 -0700
+Subject: perf/aux: Make perf_event accessible to setup_aux()
+
+[ Upstream commit 840018668ce2d96783356204ff282d6c9b0e5f66 ]
+
+When pmu::setup_aux() is called the coresight PMU needs to know which
+sink to use for the session by looking up the information in the
+event's attr::config2 field.
+
+As such simply replace the cpu information by the complete perf_event
+structure and change all affected customers.
+
+Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
+Reviewed-by: Suzuki Poulouse <suzuki.poulose@arm.com>
+Acked-by: Peter Zijlstra <peterz@infradead.org>
+Cc: Adrian Hunter <adrian.hunter@intel.com>
+Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
+Cc: Alexei Starovoitov <ast@kernel.org>
+Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Cc: H. Peter Anvin <hpa@zytor.com>
+Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
+Cc: Jiri Olsa <jolsa@redhat.com>
+Cc: Mark Rutland <mark.rutland@arm.com>
+Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
+Cc: Namhyung Kim <namhyung@kernel.org>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Cc: Will Deacon <will.deacon@arm.com>
+Cc: linux-arm-kernel@lists.infradead.org
+Cc: linux-s390@vger.kernel.org
+Link: http://lkml.kernel.org/r/20190131184714.20388-2-mathieu.poirier@linaro.org
+Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ arch/s390/kernel/perf_cpum_sf.c | 6 +++---
+ arch/x86/events/intel/bts.c | 4 +++-
+ arch/x86/events/intel/pt.c | 5 +++--
+ drivers/hwtracing/coresight/coresight-etm-perf.c | 6 +++---
+ drivers/perf/arm_spe_pmu.c | 6 +++---
+ include/linux/perf_event.h | 2 +-
+ kernel/events/ring_buffer.c | 2 +-
+ 7 files changed, 17 insertions(+), 14 deletions(-)
+
+diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c
+index 5c53e977be62..44404836e9d1 100644
+--- a/arch/s390/kernel/perf_cpum_sf.c
++++ b/arch/s390/kernel/perf_cpum_sf.c
+@@ -1600,7 +1600,7 @@ static void aux_sdb_init(unsigned long sdb)
+
+ /*
+ * aux_buffer_setup() - Setup AUX buffer for diagnostic mode sampling
+- * @cpu: On which to allocate, -1 means current
++ * @event: Event the buffer is setup for, event->cpu == -1 means current
+ * @pages: Array of pointers to buffer pages passed from perf core
+ * @nr_pages: Total pages
+ * @snapshot: Flag for snapshot mode
+@@ -1612,8 +1612,8 @@ static void aux_sdb_init(unsigned long sdb)
+ *
+ * Return the private AUX buffer structure if success or NULL if fails.
+ */
+-static void *aux_buffer_setup(int cpu, void **pages, int nr_pages,
+- bool snapshot)
++static void *aux_buffer_setup(struct perf_event *event, void **pages,
++ int nr_pages, bool snapshot)
+ {
+ struct sf_buffer *sfb;
+ struct aux_buffer *aux;
+diff --git a/arch/x86/events/intel/bts.c b/arch/x86/events/intel/bts.c
+index 24ffa1e88cf9..7139f6bf27ad 100644
+--- a/arch/x86/events/intel/bts.c
++++ b/arch/x86/events/intel/bts.c
+@@ -77,10 +77,12 @@ static size_t buf_size(struct page *page)
+ }
+
+ static void *
+-bts_buffer_setup_aux(int cpu, void **pages, int nr_pages, bool overwrite)
++bts_buffer_setup_aux(struct perf_event *event, void **pages,
++ int nr_pages, bool overwrite)
+ {
+ struct bts_buffer *buf;
+ struct page *page;
++ int cpu = event->cpu;
+ int node = (cpu == -1) ? cpu : cpu_to_node(cpu);
+ unsigned long offset;
+ size_t size = nr_pages << PAGE_SHIFT;
+diff --git a/arch/x86/events/intel/pt.c b/arch/x86/events/intel/pt.c
+index 8d016ce5b80d..8f4c98fdd03c 100644
+--- a/arch/x86/events/intel/pt.c
++++ b/arch/x86/events/intel/pt.c
+@@ -1104,10 +1104,11 @@ static int pt_buffer_init_topa(struct pt_buffer *buf, unsigned long nr_pages,
+ * Return: Our private PT buffer structure.
+ */
+ static void *
+-pt_buffer_setup_aux(int cpu, void **pages, int nr_pages, bool snapshot)
++pt_buffer_setup_aux(struct perf_event *event, void **pages,
++ int nr_pages, bool snapshot)
+ {
+ struct pt_buffer *buf;
+- int node, ret;
++ int node, ret, cpu = event->cpu;
+
+ if (!nr_pages)
+ return NULL;
+diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c b/drivers/hwtracing/coresight/coresight-etm-perf.c
+index 677695635211..0f5e03e4df22 100644
+--- a/drivers/hwtracing/coresight/coresight-etm-perf.c
++++ b/drivers/hwtracing/coresight/coresight-etm-perf.c
+@@ -181,15 +181,15 @@ static void etm_free_aux(void *data)
+ schedule_work(&event_data->work);
+ }
+
+-static void *etm_setup_aux(int event_cpu, void **pages,
++static void *etm_setup_aux(struct perf_event *event, void **pages,
+ int nr_pages, bool overwrite)
+ {
+- int cpu;
++ int cpu = event->cpu;
+ cpumask_t *mask;
+ struct coresight_device *sink;
+ struct etm_event_data *event_data = NULL;
+
+- event_data = alloc_event_data(event_cpu);
++ event_data = alloc_event_data(cpu);
+ if (!event_data)
+ return NULL;
+ INIT_WORK(&event_data->work, free_event_data);
+diff --git a/drivers/perf/arm_spe_pmu.c b/drivers/perf/arm_spe_pmu.c
+index e1a77b2de78a..3623f6489f49 100644
+--- a/drivers/perf/arm_spe_pmu.c
++++ b/drivers/perf/arm_spe_pmu.c
+@@ -824,10 +824,10 @@ static void arm_spe_pmu_read(struct perf_event *event)
+ {
+ }
+
+-static void *arm_spe_pmu_setup_aux(int cpu, void **pages, int nr_pages,
+- bool snapshot)
++static void *arm_spe_pmu_setup_aux(struct perf_event *event, void **pages,
++ int nr_pages, bool snapshot)
+ {
+- int i;
++ int i, cpu = event->cpu;
+ struct page **pglist;
+ struct arm_spe_pmu_buf *buf;
+
+diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
+index c2876e740514..42fc852bf512 100644
+--- a/include/linux/perf_event.h
++++ b/include/linux/perf_event.h
+@@ -409,7 +409,7 @@ struct pmu {
+ /*
+ * Set up pmu-private data structures for an AUX area
+ */
+- void *(*setup_aux) (int cpu, void **pages,
++ void *(*setup_aux) (struct perf_event *event, void **pages,
+ int nr_pages, bool overwrite);
+ /* optional */
+
+diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c
+index 5631af940316..474b2ccdbe69 100644
+--- a/kernel/events/ring_buffer.c
++++ b/kernel/events/ring_buffer.c
+@@ -648,7 +648,7 @@ int rb_alloc_aux(struct ring_buffer *rb, struct perf_event *event,
+ goto out;
+ }
+
+- rb->aux_priv = event->pmu->setup_aux(event->cpu, rb->aux_pages, nr_pages,
++ rb->aux_priv = event->pmu->setup_aux(event, rb->aux_pages, nr_pages,
+ overwrite);
+ if (!rb->aux_priv)
+ goto out;
+--
+2.19.1
+
--- /dev/null
+From c1bb629d8e790bb3d462b3c456af3055017bf41b Mon Sep 17 00:00:00 2001
+From: Jiri Olsa <jolsa@redhat.com>
+Date: Tue, 5 Mar 2019 16:25:29 +0100
+Subject: perf c2c: Fix c2c report for empty numa node
+
+[ Upstream commit e34c940245437f36d2c492edd1f8237eff391064 ]
+
+Ravi Bangoria reported that we fail with an empty NUMA node with the
+following message:
+
+ $ lscpu
+ NUMA node0 CPU(s):
+ NUMA node1 CPU(s): 0-4
+
+ $ sudo ./perf c2c report
+ node/cpu topology bugFailed setup nodes
+
+Fix this by detecting the empty node and keeping its CPU set empty.
+
+Reported-by: Nageswara R Sastry <nasastry@in.ibm.com>
+Signed-off-by: Jiri Olsa <jolsa@kernel.org>
+Tested-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
+Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
+Cc: Andi Kleen <ak@linux.intel.com>
+Cc: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de>
+Cc: Namhyung Kim <namhyung@kernel.org>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Link: http://lkml.kernel.org/r/20190305152536.21035-2-jolsa@kernel.org
+Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ tools/perf/builtin-c2c.c | 8 ++++++--
+ 1 file changed, 6 insertions(+), 2 deletions(-)
+
+diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
+index f3aa9d02a5ab..763c2edf52e7 100644
+--- a/tools/perf/builtin-c2c.c
++++ b/tools/perf/builtin-c2c.c
+@@ -2055,6 +2055,12 @@ static int setup_nodes(struct perf_session *session)
+ if (!set)
+ return -ENOMEM;
+
++ nodes[node] = set;
++
++ /* empty node, skip */
++ if (cpu_map__empty(map))
++ continue;
++
+ for (cpu = 0; cpu < map->nr; cpu++) {
+ set_bit(map->map[cpu], set);
+
+@@ -2063,8 +2069,6 @@ static int setup_nodes(struct perf_session *session)
+
+ cpu2node[map->map[cpu]] = node;
+ }
+-
+- nodes[node] = set;
+ }
+
+ setup_nodes_header();
+--
+2.19.1
+
--- /dev/null
+From 83457f8bacf8800e66d82e06ad9feed89e2a1cd0 Mon Sep 17 00:00:00 2001
+From: Thomas Richter <tmricht@linux.ibm.com>
+Date: Mon, 11 Feb 2019 11:06:27 +0100
+Subject: perf report: Add s390 diagnosic sampling descriptor size
+
+[ Upstream commit 2187d87eacd46f6214ce3dc9cfd7a558375a4153 ]
+
+On IBM z13 machine types 2964 and 2965 the descriptor
+sizes for sampling and diagnostic sampling entries
+might be missing in the trailer entry and are set to zero.
+
+This leads to a perf report failure when processing diagnostic
+sampling entries.
+
+This patch adds missing descriptor sizes when the trailer entry
+contains zero for these fields.
+
+Output before:
+ [root@s38lp82 perf]# ./perf report --stdio | fgrep Samples
+ 0xabbf0 [0x8]: failed to process type: 68
+ Error:
+ failed to process sample
+ [root@s38lp82 perf]#
+
+Output after:
+ [root@s38lp82 perf]# ./perf report --stdio | fgrep Samples
+ # Total Lost Samples: 0
+ # Samples: 3K of event 'SF_CYCLES_BASIC_DIAG'
+ # Samples: 162 of event 'CF_DIAG'
+ [root@s38lp82 perf]#
+
+Fixes: 2b1444f2e28b ("perf report: Add raw report support for s390 auxiliary trace")
+
+Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
+Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com>
+Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
+Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
+Link: http://lkml.kernel.org/r/20190211100627.85714-1-tmricht@linux.ibm.com
+Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ tools/perf/util/s390-cpumsf.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/tools/perf/util/s390-cpumsf.c b/tools/perf/util/s390-cpumsf.c
+index aa7f8c11fbb7..910f2621d211 100644
+--- a/tools/perf/util/s390-cpumsf.c
++++ b/tools/perf/util/s390-cpumsf.c
+@@ -294,6 +294,11 @@ static bool s390_cpumsf_validate(int machine_type,
+ *dsdes = 85;
+ *bsdes = 32;
+ break;
++ case 2964:
++ case 2965:
++ *dsdes = 112;
++ *bsdes = 32;
++ break;
+ default:
+ /* Illegal trailer entry */
+ return false;
+--
+2.19.1
+
--- /dev/null
+From f4c2f21c1f1b5bab9c577a74fa3afa48b4a206f3 Mon Sep 17 00:00:00 2001
+From: He Kuang <hekuang@huawei.com>
+Date: Tue, 19 Feb 2019 21:05:31 +0800
+Subject: perf report: Don't shadow inlined symbol with different addr range
+
+[ Upstream commit 7346195e8643482968f547483e0d823ec1982fab ]
+
+We can't assume inlined symbols with the same name are equal, because
+their address range may be different. This will cause the symbols with
+different addresses be shadowed when adding to the hist entry, and lead
+to ERANGE error when checking the symbol address during sample parse,
+the addr should be within the range of [sym.start, sym.end].
+
+The error message is like: "0x36aea60 [0x8]: failed to process type: 68".
+
+The second parameter of symbol__new() is the length of the fake symbol
+for the inline frame, which is the subtraction of the end and start
+address of base_sym.
+
+Signed-off-by: He Kuang <hekuang@huawei.com>
+Acked-by: Jiri Olsa <jolsa@kernel.org>
+Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
+Cc: Milian Wolff <milian.wolff@kdab.com>
+Cc: Namhyung Kim <namhyung@kernel.org>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Fixes: aa441895f7b4 ("perf report: Compare symbol name for inlined frames when sorting")
+Link: http://lkml.kernel.org/r/20190219130531.15692-1-hekuang@huawei.com
+Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ tools/perf/util/sort.c | 10 ++++++++--
+ tools/perf/util/srcline.c | 2 +-
+ 2 files changed, 9 insertions(+), 3 deletions(-)
+
+diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
+index b284276ec963..46daa22b86e3 100644
+--- a/tools/perf/util/sort.c
++++ b/tools/perf/util/sort.c
+@@ -229,8 +229,14 @@ static int64_t _sort__sym_cmp(struct symbol *sym_l, struct symbol *sym_r)
+ if (sym_l == sym_r)
+ return 0;
+
+- if (sym_l->inlined || sym_r->inlined)
+- return strcmp(sym_l->name, sym_r->name);
++ if (sym_l->inlined || sym_r->inlined) {
++ int ret = strcmp(sym_l->name, sym_r->name);
++
++ if (ret)
++ return ret;
++ if ((sym_l->start <= sym_r->end) && (sym_l->end >= sym_r->start))
++ return 0;
++ }
+
+ if (sym_l->start != sym_r->start)
+ return (int64_t)(sym_r->start - sym_l->start);
+diff --git a/tools/perf/util/srcline.c b/tools/perf/util/srcline.c
+index e767c4a9d4d2..af3f9b9f1e8b 100644
+--- a/tools/perf/util/srcline.c
++++ b/tools/perf/util/srcline.c
+@@ -104,7 +104,7 @@ static struct symbol *new_inline_sym(struct dso *dso,
+ } else {
+ /* create a fake symbol for the inline frame */
+ inline_sym = symbol__new(base_sym ? base_sym->start : 0,
+- base_sym ? base_sym->end : 0,
++ base_sym ? (base_sym->end - base_sym->start) : 0,
+ base_sym ? base_sym->binding : 0,
+ base_sym ? base_sym->type : 0,
+ funcname);
+--
+2.19.1
+
--- /dev/null
+From f557d588b0f26330aace28c61e273a12468af32e Mon Sep 17 00:00:00 2001
+From: Tony Jones <tonyj@suse.de>
+Date: Wed, 23 Jan 2019 16:52:24 -0800
+Subject: perf script python: Add trace_context extension module to sys.modules
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+[ Upstream commit cc437642255224e4140fed1f3e3156fc8ad91903 ]
+
+In Python3, the result of PyModule_Create (called from
+scripts/python/Perf-Trace-Util/Context.c) is not automatically added to
+sys.modules. See: https://bugs.python.org/issue4592
+
+Below is the observed behavior without the fix:
+
+ # ldd /usr/bin/perf | grep -i python
+ libpython3.6m.so.1.0 => /usr/lib64/libpython3.6m.so.1.0 (0x00007f8e1dfb2000)
+
+ # perf record /bin/false
+ [ perf record: Woken up 1 times to write data ]
+ [ perf record: Captured and wrote 0.015 MB perf.data (17 samples) ]
+
+ # perf script -g python | cat
+ generated Python script: perf-script.py
+
+ # perf script -s ./perf-script.py
+ Traceback (most recent call last):
+ File "./perf-script.py", line 18, in <module>
+ from perf_trace_context import *
+ ModuleNotFoundError: No module named 'perf_trace_context'
+ Error running python script ./perf-script.py
+ #
+
+Committer notes:
+
+To build with python3 use:
+
+ $ make -C tools/perf PYTHON=python3
+
+Use a non-const variable to pass the 'name' arg to
+PyImport_AppendInittab(), as python2.6 has that as 'char *', which ends
+up trowing this in some environments:
+
+ CC /tmp/build/perf/util/parse-branch-options.o
+ util/scripting-engines/trace-event-python.c: In function 'python_start_script':
+ util/scripting-engines/trace-event-python.c:1520:2: error: passing argument 1 of 'PyImport_AppendInittab' discards 'const' qualifier from pointer target type [-Werror]
+ PyImport_AppendInittab("perf_trace_context", initfunc);
+ ^
+ In file included from /usr/include/python2.6/Python.h:130:0,
+ from util/scripting-engines/trace-event-python.c:22:
+ /usr/include/python2.6/import.h:54:17: note: expected 'char *' but argument is of type 'const char *'
+ PyAPI_FUNC(int) PyImport_AppendInittab(char *name, void (*initfunc)(void));
+ ^
+ cc1: all warnings being treated as errors
+
+Signed-off-by: Tony Jones <tonyj@suse.de>
+Acked-by: Jiri Olsa <jolsa@kernel.org>
+Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
+Cc: Jaroslav Škarvada <jskarvad@redhat.com>
+Cc: Jonathan Corbet <corbet@lwn.net>
+Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
+Cc: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com>
+Fixes: 66dfdff03d19 ("perf tools: Add Python 3 support")
+Link: http://lkml.kernel.org/r/20190124005229.16146-2-tonyj@suse.de
+Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ .../perf/util/scripting-engines/trace-event-python.c | 12 +++++++++---
+ 1 file changed, 9 insertions(+), 3 deletions(-)
+
+diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c
+index fb11396ec861..9569cc06e0a7 100644
+--- a/tools/perf/util/scripting-engines/trace-event-python.c
++++ b/tools/perf/util/scripting-engines/trace-event-python.c
+@@ -1493,34 +1493,40 @@ static void _free_command_line(wchar_t **command_line, int num)
+ static int python_start_script(const char *script, int argc, const char **argv)
+ {
+ struct tables *tables = &tables_global;
++ PyMODINIT_FUNC (*initfunc)(void);
+ #if PY_MAJOR_VERSION < 3
+ const char **command_line;
+ #else
+ wchar_t **command_line;
+ #endif
+- char buf[PATH_MAX];
++ /*
++ * Use a non-const name variable to cope with python 2.6's
++ * PyImport_AppendInittab prototype
++ */
++ char buf[PATH_MAX], name[19] = "perf_trace_context";
+ int i, err = 0;
+ FILE *fp;
+
+ #if PY_MAJOR_VERSION < 3
++ initfunc = initperf_trace_context;
+ command_line = malloc((argc + 1) * sizeof(const char *));
+ command_line[0] = script;
+ for (i = 1; i < argc + 1; i++)
+ command_line[i] = argv[i - 1];
+ #else
++ initfunc = PyInit_perf_trace_context;
+ command_line = malloc((argc + 1) * sizeof(wchar_t *));
+ command_line[0] = Py_DecodeLocale(script, NULL);
+ for (i = 1; i < argc + 1; i++)
+ command_line[i] = Py_DecodeLocale(argv[i - 1], NULL);
+ #endif
+
++ PyImport_AppendInittab(name, initfunc);
+ Py_Initialize();
+
+ #if PY_MAJOR_VERSION < 3
+- initperf_trace_context();
+ PySys_SetArgv(argc + 1, (char **)command_line);
+ #else
+- PyInit_perf_trace_context();
+ PySys_SetArgv(argc + 1, command_line);
+ #endif
+
+--
+2.19.1
+
--- /dev/null
+From 582ce76c6949dc2792a19b93ba3d0759d91d312c Mon Sep 17 00:00:00 2001
+From: Tony Jones <tonyj@suse.de>
+Date: Wed, 23 Jan 2019 16:52:25 -0800
+Subject: perf script python: Use PyBytes for attr in trace-event-python
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+[ Upstream commit 72e0b15cb24a497d7d0d4707cf51ff40c185ae8c ]
+
+With Python3. PyUnicode_FromStringAndSize is unsafe to call on attr and will
+return NULL. Use _PyBytes_FromStringAndSize (as with raw_buf).
+
+Below is the observed behavior without the fix. Note it is first necessary
+to apply the prior fix (Add trace_context extension module to sys,modules):
+
+ # ldd /usr/bin/perf | grep -i python
+ libpython3.6m.so.1.0 => /usr/lib64/libpython3.6m.so.1.0 (0x00007f8e1dfb2000)
+
+ # perf record -e raw_syscalls:sys_enter /bin/false
+ [ perf record: Woken up 1 times to write data ]
+ [ perf record: Captured and wrote 0.018 MB perf.data (21 samples) ]
+
+ # perf script -g python | cat
+ generated Python script: perf-script.py
+
+ # perf script -s ./perf-script.py
+ in trace_begin
+ Segmentation fault (core dumped)
+
+Signed-off-by: Tony Jones <tonyj@suse.de>
+Acked-by: Jiri Olsa <jolsa@kernel.org>
+Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
+Cc: Jaroslav Škarvada <jskarvad@redhat.com>
+Cc: Jonathan Corbet <corbet@lwn.net>
+Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
+Cc: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com>
+Fixes: 66dfdff03d19 ("perf tools: Add Python 3 support")
+Link: http://lkml.kernel.org/r/20190124005229.16146-3-tonyj@suse.de
+Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ tools/perf/util/scripting-engines/trace-event-python.c | 3 +--
+ 1 file changed, 1 insertion(+), 2 deletions(-)
+
+diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c
+index 05d95de14e20..fb11396ec861 100644
+--- a/tools/perf/util/scripting-engines/trace-event-python.c
++++ b/tools/perf/util/scripting-engines/trace-event-python.c
+@@ -733,8 +733,7 @@ static PyObject *get_perf_sample_dict(struct perf_sample *sample,
+ Py_FatalError("couldn't create Python dictionary");
+
+ pydict_set_item_string_decref(dict, "ev_name", _PyUnicode_FromString(perf_evsel__name(evsel)));
+- pydict_set_item_string_decref(dict, "attr", _PyUnicode_FromStringAndSize(
+- (const char *)&evsel->attr, sizeof(evsel->attr)));
++ pydict_set_item_string_decref(dict, "attr", _PyBytes_FromStringAndSize((const char *)&evsel->attr, sizeof(evsel->attr)));
+
+ pydict_set_item_string_decref(dict_sample, "pid",
+ _PyLong_FromLong(sample->pid));
+--
+2.19.1
+
--- /dev/null
+From 0b87074db19c32d15e1b4c6935ba6a0d02e5fd16 Mon Sep 17 00:00:00 2001
+From: Thomas Richter <tmricht@linux.ibm.com>
+Date: Tue, 19 Feb 2019 16:36:39 +0100
+Subject: perf test: Fix failure of 'evsel-tp-sched' test on s390
+
+[ Upstream commit 03d309711d687460d1345de8a0363f45b1c8cd11 ]
+
+Commit 489338a717a0 ("perf tests evsel-tp-sched: Fix bitwise operator")
+causes test case 14 "Parse sched tracepoints fields" to fail on s390.
+
+This test succeeds on x86.
+
+In fact this test now fails on all architectures with type char treated
+as type unsigned char.
+
+The root cause is the signed-ness of character arrays in the tracepoints
+sched_switch for structure members prev_comm and next_comm.
+
+On s390 the output of:
+
+ [root@m35lp76 perf]# cat /sys/kernel/debug/tracing/events/sched/sched_switch/format
+ name: sched_switch
+ ID: 287
+ format:
+ field:unsigned short common_type; offset:0; size:2; signed:0;
+ ...
+ field:char prev_comm[16]; offset:8; size:16; signed:0;
+ ...
+ field:char next_comm[16]; offset:40; size:16; signed:0;
+
+reveals the character arrays prev_comm and next_comm are per
+default unsigned char and have values in the range of 0..255.
+
+On x86 both fields are signed as this output shows:
+ [root@f29]# cat /sys/kernel/debug/tracing/events/sched/sched_switch/format
+ name: sched_switch
+ ID: 287
+ format:
+ field:unsigned short common_type; offset:0; size:2; signed:0;
+ ...
+ field:char prev_comm[16]; offset:8; size:16; signed:1;
+ ...
+ field:char next_comm[16]; offset:40; size:16; signed:1;
+
+and the character arrays prev_comm and next_comm are per default signed
+char and have values in the range of -1..127. The implementation of
+type char is architecture specific.
+
+Since the character arrays in both tracepoints sched_switch and
+sched_wakeup should contain ascii characters, simply omit the check for
+signedness in the test case.
+
+Output before:
+
+ [root@m35lp76 perf]# ./perf test -F 14
+ 14: Parse sched tracepoints fields :
+ --- start ---
+ sched:sched_switch: "prev_comm" signedness(0) is wrong, should be 1
+ sched:sched_switch: "next_comm" signedness(0) is wrong, should be 1
+ sched:sched_wakeup: "comm" signedness(0) is wrong, should be 1
+ ---- end ----
+ 14: Parse sched tracepoints fields : FAILED!
+ [root@m35lp76 perf]#
+
+Output after:
+
+ [root@m35lp76 perf]# ./perf test -Fv 14
+ 14: Parse sched tracepoints fields :
+ --- start ---
+ ---- end ----
+ Parse sched tracepoints fields: Ok
+ [root@m35lp76 perf]#
+
+Fixes: 489338a717a0 ("perf tests evsel-tp-sched: Fix bitwise operator")
+
+Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
+Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
+Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
+Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
+Link: http://lkml.kernel.org/r/20190219153639.31267-1-tmricht@linux.ibm.com
+Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ tools/perf/tests/evsel-tp-sched.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/tools/perf/tests/evsel-tp-sched.c b/tools/perf/tests/evsel-tp-sched.c
+index 67bcbf876776..d0406116c905 100644
+--- a/tools/perf/tests/evsel-tp-sched.c
++++ b/tools/perf/tests/evsel-tp-sched.c
+@@ -43,7 +43,7 @@ int test__perf_evsel__tp_sched_test(struct test *test __maybe_unused, int subtes
+ return -1;
+ }
+
+- if (perf_evsel__test_field(evsel, "prev_comm", 16, true))
++ if (perf_evsel__test_field(evsel, "prev_comm", 16, false))
+ ret = -1;
+
+ if (perf_evsel__test_field(evsel, "prev_pid", 4, true))
+@@ -55,7 +55,7 @@ int test__perf_evsel__tp_sched_test(struct test *test __maybe_unused, int subtes
+ if (perf_evsel__test_field(evsel, "prev_state", sizeof(long), true))
+ ret = -1;
+
+- if (perf_evsel__test_field(evsel, "next_comm", 16, true))
++ if (perf_evsel__test_field(evsel, "next_comm", 16, false))
+ ret = -1;
+
+ if (perf_evsel__test_field(evsel, "next_pid", 4, true))
+@@ -73,7 +73,7 @@ int test__perf_evsel__tp_sched_test(struct test *test __maybe_unused, int subtes
+ return -1;
+ }
+
+- if (perf_evsel__test_field(evsel, "comm", 16, true))
++ if (perf_evsel__test_field(evsel, "comm", 16, false))
+ ret = -1;
+
+ if (perf_evsel__test_field(evsel, "pid", 4, true))
+--
+2.19.1
+
--- /dev/null
+From 87c21772c7708507a914745acd1b21013f2cab98 Mon Sep 17 00:00:00 2001
+From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
+Date: Sat, 12 Jan 2019 13:59:13 +0100
+Subject: pinctrl: meson: meson8b: add the eth_rxd2 and eth_rxd3 pins
+
+[ Upstream commit 6daae00243e622dd3feec7965bfe421ad6dd317e ]
+
+Gigabit Ethernet requires the Ethernet TXD0..3 and RXD0..3 data lines.
+Add the missing eth_rxd2 and eth_rxd3 definitions so we don't have to
+rely on the bootloader to set them up correctly.
+
+The vendor u-boot sources for Odroid-C1 use the following Ethernet
+pinmux configuration:
+ SET_CBUS_REG_MASK(PERIPHS_PIN_MUX_6, 0x3f4f);
+ SET_CBUS_REG_MASK(PERIPHS_PIN_MUX_7, 0xf00000);
+This translates to the following pin groups in the mainline kernel:
+- register 6 bit 0: eth_rxd1 (DIF_0_P)
+- register 6 bit 1: eth_rxd0 (DIF_0_N)
+- register 6 bit 2: eth_rx_dv (DIF_1_P)
+- register 6 bit 3: eth_rx_clk (DIF_1_N)
+- register 6 bit 6: eth_tx_en (DIF_3_P)
+- register 6 bit 8: eth_ref_clk (DIF_3_N)
+- register 6 bit 9: eth_mdc (DIF_4_P)
+- register 6 bit 10: eth_mdio_en (DIF_4_N)
+- register 6 bit 11: eth_tx_clk (GPIOH_9)
+- register 6 bit 12: eth_txd2 (GPIOH_8)
+- register 6 bit 13: eth_txd3 (GPIOH_7)
+- register 7 bit 20: eth_txd0_0 (GPIOH_6)
+- register 7 bit 21: eth_txd1_0 (GPIOH_5)
+- register 7 bit 22: eth_rxd3 (DIF_2_P)
+- register 7 bit 23: eth_rxd2 (DIF_2_N)
+
+All functions except eth_rxd2 and eth_rxd3 are already supported by the
+pinctrl-meson8b driver.
+
+Suggested-by: Jianxin Pan <jianxin.pan@amlogic.com>
+Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
+Reviewed-by: Kevin Hilman <khilman@baylibre.com>
+Tested-by: Emiliano Ingrassia <ingrassia@epigenesys.com>
+Reviewed-by: Emiliano Ingrassia <ingrassia@epigenesys.com>
+Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/pinctrl/meson/pinctrl-meson8b.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/pinctrl/meson/pinctrl-meson8b.c b/drivers/pinctrl/meson/pinctrl-meson8b.c
+index ead4beb5f55f..036124fd363c 100644
+--- a/drivers/pinctrl/meson/pinctrl-meson8b.c
++++ b/drivers/pinctrl/meson/pinctrl-meson8b.c
+@@ -346,6 +346,8 @@ static const unsigned int eth_rx_dv_pins[] = { DIF_1_P };
+ static const unsigned int eth_rx_clk_pins[] = { DIF_1_N };
+ static const unsigned int eth_txd0_1_pins[] = { DIF_2_P };
+ static const unsigned int eth_txd1_1_pins[] = { DIF_2_N };
++static const unsigned int eth_rxd3_pins[] = { DIF_2_P };
++static const unsigned int eth_rxd2_pins[] = { DIF_2_N };
+ static const unsigned int eth_tx_en_pins[] = { DIF_3_P };
+ static const unsigned int eth_ref_clk_pins[] = { DIF_3_N };
+ static const unsigned int eth_mdc_pins[] = { DIF_4_P };
+@@ -571,6 +573,8 @@ static struct meson_pmx_group meson8b_cbus_groups[] = {
+ GROUP(eth_ref_clk, 6, 8),
+ GROUP(eth_mdc, 6, 9),
+ GROUP(eth_mdio_en, 6, 10),
++ GROUP(eth_rxd3, 7, 22),
++ GROUP(eth_rxd2, 7, 23),
+ };
+
+ static struct meson_pmx_group meson8b_aobus_groups[] = {
+@@ -720,7 +724,7 @@ static const char * const ethernet_groups[] = {
+ "eth_tx_clk", "eth_tx_en", "eth_txd1_0", "eth_txd1_1",
+ "eth_txd0_0", "eth_txd0_1", "eth_rx_clk", "eth_rx_dv",
+ "eth_rxd1", "eth_rxd0", "eth_mdio_en", "eth_mdc", "eth_ref_clk",
+- "eth_txd2", "eth_txd3"
++ "eth_txd2", "eth_txd3", "eth_rxd3", "eth_rxd2"
+ };
+
+ static const char * const i2c_a_groups[] = {
+--
+2.19.1
+
--- /dev/null
+From 23d00746c9f2f4f10a87d6453e6abb605b07f65f Mon Sep 17 00:00:00 2001
+From: Vadim Pasternak <vadimp@mellanox.com>
+Date: Sun, 17 Feb 2019 18:15:30 +0000
+Subject: platform/mellanox: mlxreg-hotplug: Fix KASAN warning
+
+[ Upstream commit e4c275f77624961b56cce397814d9d770a45ac59 ]
+
+Fix the following KASAN warning produced when booting a 64-bit kernel:
+[ 13.334750] BUG: KASAN: stack-out-of-bounds in find_first_bit+0x19/0x70
+[ 13.342166] Read of size 8 at addr ffff880235067178 by task kworker/2:1/42
+[ 13.342176] CPU: 2 PID: 42 Comm: kworker/2:1 Not tainted 4.20.0-rc1+ #106
+[ 13.342179] Hardware name: Mellanox Technologies Ltd. MSN2740/Mellanox x86 SFF board, BIOS 5.6.5 06/07/2016
+[ 13.342190] Workqueue: events deferred_probe_work_func
+[ 13.342194] Call Trace:
+[ 13.342206] dump_stack+0xc7/0x15b
+[ 13.342214] ? show_regs_print_info+0x5/0x5
+[ 13.342220] ? kmsg_dump_rewind_nolock+0x59/0x59
+[ 13.342234] ? _raw_write_lock_irqsave+0x100/0x100
+[ 13.351593] print_address_description+0x73/0x260
+[ 13.351603] kasan_report+0x260/0x380
+[ 13.351611] ? find_first_bit+0x19/0x70
+[ 13.351619] find_first_bit+0x19/0x70
+[ 13.351630] mlxreg_hotplug_work_handler+0x73c/0x920 [mlxreg_hotplug]
+[ 13.351639] ? __lock_text_start+0x8/0x8
+[ 13.351646] ? _raw_write_lock_irqsave+0x80/0x100
+[ 13.351656] ? mlxreg_hotplug_remove+0x1e0/0x1e0 [mlxreg_hotplug]
+[ 13.351663] ? regmap_volatile+0x40/0xb0
+[ 13.351668] ? regcache_write+0x4c/0x90
+[ 13.351676] ? mlxplat_mlxcpld_reg_write+0x24/0x30 [mlx_platform]
+[ 13.351681] ? _regmap_write+0xea/0x220
+[ 13.351688] ? __mutex_lock_slowpath+0x10/0x10
+[ 13.351696] ? devm_add_action+0x70/0x70
+[ 13.351701] ? mutex_unlock+0x1d/0x40
+[ 13.351710] mlxreg_hotplug_probe+0x82e/0x989 [mlxreg_hotplug]
+[ 13.351723] ? mlxreg_hotplug_work_handler+0x920/0x920 [mlxreg_hotplug]
+[ 13.351731] ? sysfs_do_create_link_sd.isra.2+0xf4/0x190
+[ 13.351737] ? sysfs_rename_link_ns+0xf0/0xf0
+[ 13.351743] ? devres_close_group+0x2b0/0x2b0
+[ 13.351749] ? pinctrl_put+0x20/0x20
+[ 13.351755] ? acpi_dev_pm_attach+0x2c/0xd0
+[ 13.351763] platform_drv_probe+0x70/0xd0
+[ 13.351771] really_probe+0x480/0x6e0
+[ 13.351778] ? device_attach+0x10/0x10
+[ 13.351784] ? __lock_text_start+0x8/0x8
+[ 13.351790] ? _raw_write_lock_irqsave+0x80/0x100
+[ 13.351797] ? _raw_write_lock_irqsave+0x80/0x100
+[ 13.351806] ? __driver_attach+0x190/0x190
+[ 13.351812] driver_probe_device+0x17d/0x1a0
+[ 13.351819] ? __driver_attach+0x190/0x190
+[ 13.351825] bus_for_each_drv+0xd6/0x130
+[ 13.351831] ? bus_rescan_devices+0x20/0x20
+[ 13.351837] ? __mutex_lock_slowpath+0x10/0x10
+[ 13.351845] __device_attach+0x18c/0x230
+[ 13.351852] ? device_bind_driver+0x70/0x70
+[ 13.351859] ? __mutex_lock_slowpath+0x10/0x10
+[ 13.351866] bus_probe_device+0xea/0x110
+[ 13.351874] deferred_probe_work_func+0x1c9/0x290
+[ 13.351882] ? driver_deferred_probe_add+0x1d0/0x1d0
+[ 13.351889] ? preempt_notifier_dec+0x20/0x20
+[ 13.351897] ? read_word_at_a_time+0xe/0x20
+[ 13.351904] ? strscpy+0x151/0x290
+[ 13.351912] ? set_work_pool_and_clear_pending+0x9c/0xf0
+[ 13.351918] ? __switch_to_asm+0x34/0x70
+[ 13.351924] ? __switch_to_asm+0x40/0x70
+[ 13.351929] ? __switch_to_asm+0x34/0x70
+[ 13.351935] ? __switch_to_asm+0x40/0x70
+[ 13.351942] process_one_work+0x5cc/0xa00
+[ 13.351952] ? pwq_dec_nr_in_flight+0x1e0/0x1e0
+[ 13.351960] ? pci_mmcfg_check_reserved+0x80/0xb8
+[ 13.351967] ? run_rebalance_domains+0x250/0x250
+[ 13.351980] ? stack_access_ok+0x35/0x80
+[ 13.351986] ? deref_stack_reg+0xa1/0xe0
+[ 13.351994] ? schedule+0xcd/0x250
+[ 13.352000] ? worker_enter_idle+0x2d6/0x330
+[ 13.352006] ? __schedule+0xeb0/0xeb0
+[ 13.352014] ? fork_usermode_blob+0x130/0x130
+[ 13.352019] ? mutex_lock+0xa7/0x100
+[ 13.352026] ? _raw_spin_lock_irq+0x98/0xf0
+[ 13.352032] ? _raw_read_unlock_irqrestore+0x30/0x30
+[ 13.352037] i2c i2c-2: Added multiplexed i2c bus 11
+[ 13.352043] worker_thread+0x181/0xa80
+[ 13.352052] ? __switch_to_asm+0x34/0x70
+[ 13.352058] ? __switch_to_asm+0x40/0x70
+[ 13.352064] ? process_one_work+0xa00/0xa00
+[ 13.352070] ? __switch_to_asm+0x34/0x70
+[ 13.352076] ? __switch_to_asm+0x40/0x70
+[ 13.352081] ? __switch_to_asm+0x34/0x70
+[ 13.352086] ? __switch_to_asm+0x40/0x70
+[ 13.352092] ? __switch_to_asm+0x34/0x70
+[ 13.352097] ? __switch_to_asm+0x40/0x70
+[ 13.352105] ? __schedule+0x3d6/0xeb0
+[ 13.352112] ? migrate_swap_stop+0x470/0x470
+[ 13.352119] ? save_stack+0x89/0xb0
+[ 13.352127] ? kmem_cache_alloc_trace+0xe5/0x570
+[ 13.352132] ? kthread+0x59/0x1d0
+[ 13.352138] ? ret_from_fork+0x35/0x40
+[ 13.352154] ? __schedule+0xeb0/0xeb0
+[ 13.352161] ? remove_wait_queue+0x150/0x150
+[ 13.352169] ? _raw_write_lock_irqsave+0x80/0x100
+[ 13.352175] ? __lock_text_start+0x8/0x8
+[ 13.352183] ? process_one_work+0xa00/0xa00
+[ 13.352188] kthread+0x1a4/0x1d0
+[ 13.352195] ? kthread_create_worker_on_cpu+0xc0/0xc0
+[ 13.352202] ret_from_fork+0x35/0x40
+
+[ 13.353879] The buggy address belongs to the page:
+[ 13.353885] page:ffffea0008d419c0 count:0 mapcount:0 mapping:0000000000000000 index:0x0
+[ 13.353890] flags: 0x2ffff8000000000()
+[ 13.353897] raw: 02ffff8000000000 ffffea0008d419c8 ffffea0008d419c8 0000000000000000
+[ 13.353903] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
+[ 13.353905] page dumped because: kasan: bad access detected
+
+[ 13.353908] Memory state around the buggy address:
+[ 13.353912] ffff880235067000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+[ 13.353917] ffff880235067080: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 04
+[ 13.353921] >ffff880235067100: f2 f2 f2 f2 f2 f2 f2 04 f2 f2 f2 f2 f2 f2 f2 04
+[ 13.353923] ^
+[ 13.353927] ffff880235067180: f2 f2 f2 f2 f2 f2 f2 04 f2 f2 f2 00 00 00 00 00
+[ 13.353931] ffff880235067200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+[ 13.353933] ==================================================================
+
+The warning is caused by the below loop:
+ for_each_set_bit(bit, (unsigned long *)&asserted, 8) {
+while "asserted" is declared as 'unsigned'.
+
+The casting of 32-bit unsigned integer pointer to a 64-bit unsigned long
+pointer. There are two problems here.
+It causes the access of four extra byte, which can corrupt memory
+The 32-bit pointer address may not be 64-bit aligned.
+
+The fix changes variable "asserted" to "unsigned long".
+
+Fixes: 1f976f6978bf ("platform/x86: Move Mellanox platform hotplug driver to platform/mellanox")
+Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
+Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/platform/mellanox/mlxreg-hotplug.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/platform/mellanox/mlxreg-hotplug.c b/drivers/platform/mellanox/mlxreg-hotplug.c
+index b6d44550d98c..eca16d00e310 100644
+--- a/drivers/platform/mellanox/mlxreg-hotplug.c
++++ b/drivers/platform/mellanox/mlxreg-hotplug.c
+@@ -248,7 +248,8 @@ mlxreg_hotplug_work_helper(struct mlxreg_hotplug_priv_data *priv,
+ struct mlxreg_core_item *item)
+ {
+ struct mlxreg_core_data *data;
+- u32 asserted, regval, bit;
++ unsigned long asserted;
++ u32 regval, bit;
+ int ret;
+
+ /*
+@@ -281,7 +282,7 @@ mlxreg_hotplug_work_helper(struct mlxreg_hotplug_priv_data *priv,
+ asserted = item->cache ^ regval;
+ item->cache = regval;
+
+- for_each_set_bit(bit, (unsigned long *)&asserted, 8) {
++ for_each_set_bit(bit, &asserted, 8) {
+ data = item->data + bit;
+ if (regval & BIT(bit)) {
+ if (item->inversed)
+--
+2.19.1
+
--- /dev/null
+From 9f6cf43e315c08b665be93b358c621cf07a1f427 Mon Sep 17 00:00:00 2001
+From: Yang Fan <nullptr.cpp@gmail.com>
+Date: Sat, 19 Jan 2019 19:16:33 +0800
+Subject: platform/x86: ideapad-laptop: Fix no_hw_rfkill_list for Lenovo
+ RESCUER R720-15IKBN
+
+[ Upstream commit 4d9b2864a415fec39150bc13efc730c7eb88711e ]
+
+Commit ae7c8cba3221 ("platform/x86: ideapad-laptop: add lenovo RESCUER
+R720-15IKBN to no_hw_rfkill_list") added
+ DMI_MATCH(DMI_BOARD_NAME, "80WW")
+for Lenovo RESCUER R720-15IKBN.
+
+But DMI_BOARD_NAME does not match 80WW on Lenovo RESCUER R720-15IKBN,
+thus cause Wireless LAN still be hard blocked.
+
+On Lenovo RESCUER R720-15IKBN:
+ ~$ cat /sys/class/dmi/id/sys_vendor
+ LENOVO
+ ~$ cat /sys/class/dmi/id/board_name
+ Provence-5R3
+ ~$ cat /sys/class/dmi/id/product_name
+ 80WW
+ ~$ cat /sys/class/dmi/id/product_version
+ Lenovo R720-15IKBN
+
+So on Lenovo RESCUER R720-15IKBN:
+ DMI_SYS_VENDOR should match "LENOVO",
+ DMI_BOARD_NAME should match "Provence-5R3",
+ DMI_PRODUCT_NAME should match "80WW",
+ DMI_PRODUCT_VERSION should match "Lenovo R720-15IKBN".
+
+Fix it, and in according with other entries in no_hw_rfkill_list,
+use DMI_PRODUCT_VERSION instead of DMI_BOARD_NAME.
+
+Fixes: ae7c8cba3221 ("platform/x86: ideapad-laptop: add lenovo RESCUER R720-15IKBN to no_hw_rfkill_list")
+Signed-off-by: Yang Fan <nullptr.cpp@gmail.com>
+Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/platform/x86/ideapad-laptop.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
+index d4f1259ff5a2..62d4b94e2531 100644
+--- a/drivers/platform/x86/ideapad-laptop.c
++++ b/drivers/platform/x86/ideapad-laptop.c
+@@ -989,7 +989,7 @@ static const struct dmi_system_id no_hw_rfkill_list[] = {
+ .ident = "Lenovo RESCUER R720-15IKBN",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+- DMI_MATCH(DMI_BOARD_NAME, "80WW"),
++ DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo R720-15IKBN"),
+ },
+ },
+ {
+--
+2.19.1
+
--- /dev/null
+From 8e7838171fbd413bd7c7a05b86a74da3d2e39a22 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?J=C3=A9r=C3=B4me=20de=20Bretagne?=
+ <jerome.debretagne@gmail.com>
+Date: Sun, 6 Jan 2019 18:56:44 +0100
+Subject: platform/x86: intel-hid: Missing power button release on some Dell
+ models
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+[ Upstream commit e97a34563d18606ee5db93e495382a967f999cd4 ]
+
+Power button suspend for some Dell models was added in:
+
+commit 821b85366284 ("platform/x86: intel-hid: Power button suspend on Dell Latitude 7275")
+
+by checking against the power button press notification (0xCE) to report
+the power button press event. The corresponding power button release
+notification (0xCF) was caught and ignored to stop it from being reported
+as an "unknown event" in the logs.
+
+The missing button release event is creating issues on Android-x86, as
+reported on the project mailing list for a Dell Latitude 5175 model, since
+the events are expected in down/up pairs.
+
+Report the power button release event to fix this issue.
+
+Link: https://groups.google.com/forum/#!topic/android-x86/aSwZK9Nf9Ro
+Tested-by: Tristian Celestin <tristian.celestin@outlook.com>
+Tested-by: Jérôme de Bretagne <jerome.debretagne@gmail.com>
+Signed-off-by: Jérôme de Bretagne <jerome.debretagne@gmail.com>
+Reviewed-by: Mario Limonciello <mario.limonciello@dell.com>
+[dvhart: corrected commit reference format per checkpatch]
+Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/platform/x86/intel-hid.c | 7 +++++--
+ 1 file changed, 5 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/platform/x86/intel-hid.c b/drivers/platform/x86/intel-hid.c
+index 6cf9b7fa5bf0..3201a83073b5 100644
+--- a/drivers/platform/x86/intel-hid.c
++++ b/drivers/platform/x86/intel-hid.c
+@@ -373,7 +373,7 @@ wakeup:
+ * the 5-button array, but still send notifies with power button
+ * event code to this device object on power button actions.
+ *
+- * Report the power button press; catch and ignore the button release.
++ * Report the power button press and release.
+ */
+ if (!priv->array) {
+ if (event == 0xce) {
+@@ -382,8 +382,11 @@ wakeup:
+ return;
+ }
+
+- if (event == 0xcf)
++ if (event == 0xcf) {
++ input_report_key(priv->input_dev, KEY_POWER, 0);
++ input_sync(priv->input_dev);
+ return;
++ }
+ }
+
+ /* 0xC0 is for HID events, other values are for 5 button array */
+--
+2.19.1
+
--- /dev/null
+From 5d8c069b582780a7bc91c6616557db6bfcfa95b9 Mon Sep 17 00:00:00 2001
+From: Rajneesh Bhardwaj <rajneesh.bhardwaj@linux.intel.com>
+Date: Fri, 1 Feb 2019 13:02:26 +0530
+Subject: platform/x86: intel_pmc_core: Fix PCH IP sts reading
+
+[ Upstream commit 0e68eeea9894feeba2edf7ec63e4551b87f39621 ]
+
+A previous commit "platform/x86: intel_pmc_core: Make the driver PCH
+family agnostic <c977b98bbef5898ed3d30b08ea67622e9e82082a>" provided
+better abstraction to this driver but has some fundamental issues.
+
+e.g. the following condition
+
+for (index = 0; index < pmcdev->map->ppfear_buckets &&
+ index < PPFEAR_MAX_NUM_ENTRIES; index++, iter++)
+
+is wrong because for CNL, PPFEAR_MAX_NUM_ENTRIES is hardcoded as 5 which
+is _wrong_ and even though ppfear_buckets is 8, the loop fails to read
+all eight registers needed for CNL PCH i.e. PPFEAR0 and PPFEAR1. This
+patch refactors the pfear show logic to correctly read PCH IP power
+gating status for Cannonlake and beyond.
+
+Cc: "David E. Box" <david.e.box@intel.com>
+Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
+Fixes: c977b98bbef5 ("platform/x86: intel_pmc_core: Make the driver PCH family agnostic")
+Signed-off-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@linux.intel.com>
+Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/platform/x86/intel_pmc_core.c | 3 ++-
+ drivers/platform/x86/intel_pmc_core.h | 2 +-
+ 2 files changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/platform/x86/intel_pmc_core.c b/drivers/platform/x86/intel_pmc_core.c
+index 2d272a3e0176..e0dcdb3cc070 100644
+--- a/drivers/platform/x86/intel_pmc_core.c
++++ b/drivers/platform/x86/intel_pmc_core.c
+@@ -333,7 +333,8 @@ static int pmc_core_ppfear_sts_show(struct seq_file *s, void *unused)
+ index < PPFEAR_MAX_NUM_ENTRIES; index++, iter++)
+ pf_regs[index] = pmc_core_reg_read_byte(pmcdev, iter);
+
+- for (index = 0; map[index].name; index++)
++ for (index = 0; map[index].name &&
++ index < pmcdev->map->ppfear_buckets * 8; index++)
+ pmc_core_display_map(s, index, pf_regs[index / 8], map);
+
+ return 0;
+diff --git a/drivers/platform/x86/intel_pmc_core.h b/drivers/platform/x86/intel_pmc_core.h
+index 93a7e99e1f8b..3f9711b03cb4 100644
+--- a/drivers/platform/x86/intel_pmc_core.h
++++ b/drivers/platform/x86/intel_pmc_core.h
+@@ -39,7 +39,7 @@
+ #define SPT_PMC_SLP_S0_RES_COUNTER_STEP 0x64
+ #define PMC_BASE_ADDR_MASK ~(SPT_PMC_MMIO_REG_LEN - 1)
+ #define MTPMC_MASK 0xffff0000
+-#define PPFEAR_MAX_NUM_ENTRIES 5
++#define PPFEAR_MAX_NUM_ENTRIES 12
+ #define SPT_PPFEAR_NUM_ENTRIES 5
+ #define SPT_PMC_READ_DISABLE_BIT 0x16
+ #define SPT_PMC_MSG_FULL_STS_BIT 0x18
+--
+2.19.1
+
--- /dev/null
+From 877c736480bb2e80d197a7632e474121961e5ff0 Mon Sep 17 00:00:00 2001
+From: Nicolai Stange <nstange@suse.de>
+Date: Tue, 22 Jan 2019 10:57:21 -0500
+Subject: powerpc/64s: Clear on-stack exception marker upon exception return
+
+[ Upstream commit eddd0b332304d554ad6243942f87c2fcea98c56b ]
+
+The ppc64 specific implementation of the reliable stacktracer,
+save_stack_trace_tsk_reliable(), bails out and reports an "unreliable
+trace" whenever it finds an exception frame on the stack. Stack frames
+are classified as exception frames if the STACK_FRAME_REGS_MARKER
+magic, as written by exception prologues, is found at a particular
+location.
+
+However, as observed by Joe Lawrence, it is possible in practice that
+non-exception stack frames can alias with prior exception frames and
+thus, that the reliable stacktracer can find a stale
+STACK_FRAME_REGS_MARKER on the stack. It in turn falsely reports an
+unreliable stacktrace and blocks any live patching transition to
+finish. Said condition lasts until the stack frame is
+overwritten/initialized by function call or other means.
+
+In principle, we could mitigate this by making the exception frame
+classification condition in save_stack_trace_tsk_reliable() stronger:
+in addition to testing for STACK_FRAME_REGS_MARKER, we could also take
+into account that for all exceptions executing on the kernel stack
+ - their stack frames's backlink pointers always match what is saved
+ in their pt_regs instance's ->gpr[1] slot and that
+ - their exception frame size equals STACK_INT_FRAME_SIZE, a value
+ uncommonly large for non-exception frames.
+
+However, while these are currently true, relying on them would make
+the reliable stacktrace implementation more sensitive towards future
+changes in the exception entry code. Note that false negatives, i.e.
+not detecting exception frames, would silently break the live patching
+consistency model.
+
+Furthermore, certain other places (diagnostic stacktraces, perf, xmon)
+rely on STACK_FRAME_REGS_MARKER as well.
+
+Make the exception exit code clear the on-stack
+STACK_FRAME_REGS_MARKER for those exceptions running on the "normal"
+kernel stack and returning to kernelspace: because the topmost frame
+is ignored by the reliable stack tracer anyway, returns to userspace
+don't need to take care of clearing the marker.
+
+Furthermore, as I don't have the ability to test this on Book 3E or 32
+bits, limit the change to Book 3S and 64 bits.
+
+Fixes: df78d3f61480 ("powerpc/livepatch: Implement reliable stack tracing for the consistency model")
+Reported-by: Joe Lawrence <joe.lawrence@redhat.com>
+Signed-off-by: Nicolai Stange <nstange@suse.de>
+Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com>
+Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ arch/powerpc/kernel/entry_64.S | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
+index c806a3c12592..7a46e0e57a36 100644
+--- a/arch/powerpc/kernel/entry_64.S
++++ b/arch/powerpc/kernel/entry_64.S
+@@ -994,6 +994,13 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
+ ld r2,_NIP(r1)
+ mtspr SPRN_SRR0,r2
+
++ /*
++ * Leaving a stale exception_marker on the stack can confuse
++ * the reliable stack unwinder later on. Clear it.
++ */
++ li r2,0
++ std r2,STACK_FRAME_OVERHEAD-16(r1)
++
+ ld r0,GPR0(r1)
+ ld r2,GPR2(r1)
+ ld r3,GPR3(r1)
+--
+2.19.1
+
--- /dev/null
+From 99ee7f5d19e043a51116b66b2ab12345d2616aa3 Mon Sep 17 00:00:00 2001
+From: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
+Date: Tue, 26 Feb 2019 10:09:34 +0530
+Subject: powerpc/hugetlb: Handle mmap_min_addr correctly in get_unmapped_area
+ callback
+
+[ Upstream commit 5330367fa300742a97e20e953b1f77f48392faae ]
+
+After we ALIGN up the address we need to make sure we didn't overflow
+and resulted in zero address. In that case, we need to make sure that
+the returned address is greater than mmap_min_addr.
+
+This fixes selftest va_128TBswitch --run-hugetlb reporting failures when
+run as non root user for
+
+mmap(-1, MAP_HUGETLB)
+
+The bug is that a non-root user requesting address -1 will be given address 0
+which will then fail, whereas they should have been given something else that
+would have succeeded.
+
+We also avoid the first mmap(-1, MAP_HUGETLB) returning NULL address as mmap address
+with this change. So we think this is not a security issue, because it only affects
+whether we choose an address below mmap_min_addr, not whether we
+actually allow that address to be mapped. ie. there are existing capability
+checks to prevent a user mapping below mmap_min_addr and those will still be
+honoured even without this fix.
+
+Fixes: 484837601d4d ("powerpc/mm: Add radix support for hugetlb")
+Reviewed-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
+Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
+Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ arch/powerpc/mm/hugetlbpage-radix.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/arch/powerpc/mm/hugetlbpage-radix.c b/arch/powerpc/mm/hugetlbpage-radix.c
+index 2486bee0f93e..97c7a39ebc00 100644
+--- a/arch/powerpc/mm/hugetlbpage-radix.c
++++ b/arch/powerpc/mm/hugetlbpage-radix.c
+@@ -1,6 +1,7 @@
+ // SPDX-License-Identifier: GPL-2.0
+ #include <linux/mm.h>
+ #include <linux/hugetlb.h>
++#include <linux/security.h>
+ #include <asm/pgtable.h>
+ #include <asm/pgalloc.h>
+ #include <asm/cacheflush.h>
+@@ -73,7 +74,7 @@ radix__hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
+ if (addr) {
+ addr = ALIGN(addr, huge_page_size(h));
+ vma = find_vma(mm, addr);
+- if (high_limit - len >= addr &&
++ if (high_limit - len >= addr && addr >= mmap_min_addr &&
+ (!vma || addr + len <= vm_start_gap(vma)))
+ return addr;
+ }
+@@ -83,7 +84,7 @@ radix__hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
+ */
+ info.flags = VM_UNMAPPED_AREA_TOPDOWN;
+ info.length = len;
+- info.low_limit = PAGE_SIZE;
++ info.low_limit = max(PAGE_SIZE, mmap_min_addr);
+ info.high_limit = mm->mmap_base + (high_limit - DEFAULT_MAP_WINDOW);
+ info.align_mask = PAGE_MASK & ~huge_page_mask(h);
+ info.align_offset = 0;
+--
+2.19.1
+
--- /dev/null
+From d547ae1ff1384b9d876237ae2ee3649098d921bd Mon Sep 17 00:00:00 2001
+From: Alexey Kardashevskiy <aik@ozlabs.ru>
+Date: Wed, 13 Feb 2019 14:38:18 +1100
+Subject: powerpc/powernv/ioda: Fix locked_vm counting for memory used by IOMMU
+ tables
+
+[ Upstream commit 11f5acce2fa43b015a8120fa7620fa4efd0a2952 ]
+
+We store 2 multilevel tables in iommu_table - one for the hardware and
+one with the corresponding userspace addresses. Before allocating
+the tables, the iommu_table_group_ops::get_table_size() hook returns
+the combined size of the two and VFIO SPAPR TCE IOMMU driver adjusts
+the locked_vm counter correctly. When the table is actually allocated,
+the amount of allocated memory is stored in iommu_table::it_allocated_size
+and used to decrement the locked_vm counter when we release the memory
+used by the table; .get_table_size() and .create_table() calculate it
+independently but the result is expected to be the same.
+
+However the allocator does not add the userspace table size to
+.it_allocated_size so when we destroy the table because of VFIO PCI
+unplug (i.e. VFIO container is gone but the userspace keeps running),
+we decrement locked_vm by just a half of size of memory we are
+releasing.
+
+To make things worse, since we enabled on-demand allocation of
+indirect levels, it_allocated_size contains only the amount of memory
+actually allocated at the table creation time which can just be a
+fraction. It is not a problem with incrementing locked_vm (as
+get_table_size() value is used) but it is with decrementing.
+
+As the result, we leak locked_vm and may not be able to allocate more
+IOMMU tables after few iterations of hotplug/unplug.
+
+This sets it_allocated_size in the pnv_pci_ioda2_ops::create_table()
+hook to what pnv_pci_ioda2_get_table_size() returns so from now on we
+have a single place which calculates the maximum memory a table can
+occupy. The original meaning of it_allocated_size is somewhat lost now
+though.
+
+We do not ditch it_allocated_size whatsoever here and we do not call
+get_table_size() from vfio_iommu_spapr_tce.c when decrementing
+locked_vm as we may have multiple IOMMU groups per container and even
+though they all are supposed to have the same get_table_size()
+implementation, there is a small chance for failure or confusion.
+
+Fixes: 090bad39b237 ("powerpc/powernv: Add indirect levels to it_userspace")
+Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
+Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
+Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ arch/powerpc/platforms/powernv/pci-ioda-tce.c | 1 -
+ arch/powerpc/platforms/powernv/pci-ioda.c | 7 ++++++-
+ 2 files changed, 6 insertions(+), 2 deletions(-)
+
+diff --git a/arch/powerpc/platforms/powernv/pci-ioda-tce.c b/arch/powerpc/platforms/powernv/pci-ioda-tce.c
+index 7639b2168755..f5adb6b756f7 100644
+--- a/arch/powerpc/platforms/powernv/pci-ioda-tce.c
++++ b/arch/powerpc/platforms/powernv/pci-ioda-tce.c
+@@ -313,7 +313,6 @@ long pnv_pci_ioda2_table_alloc_pages(int nid, __u64 bus_offset,
+ page_shift);
+ tbl->it_level_size = 1ULL << (level_shift - 3);
+ tbl->it_indirect_levels = levels - 1;
+- tbl->it_allocated_size = total_allocated;
+ tbl->it_userspace = uas;
+ tbl->it_nid = nid;
+
+diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
+index cde710297a4e..326ca6288bb1 100644
+--- a/arch/powerpc/platforms/powernv/pci-ioda.c
++++ b/arch/powerpc/platforms/powernv/pci-ioda.c
+@@ -2603,8 +2603,13 @@ static long pnv_pci_ioda2_create_table_userspace(
+ int num, __u32 page_shift, __u64 window_size, __u32 levels,
+ struct iommu_table **ptbl)
+ {
+- return pnv_pci_ioda2_create_table(table_group,
++ long ret = pnv_pci_ioda2_create_table(table_group,
+ num, page_shift, window_size, levels, true, ptbl);
++
++ if (!ret)
++ (*ptbl)->it_allocated_size = pnv_pci_ioda2_get_table_size(
++ page_shift, window_size, levels);
++ return ret;
+ }
+
+ static void pnv_ioda2_take_ownership(struct iommu_table_group *table_group)
+--
+2.19.1
+
--- /dev/null
+From 6ef2fdb25068d1181c31f19b5e2638270d5e08b5 Mon Sep 17 00:00:00 2001
+From: Nathan Fontenot <nfont@linux.vnet.ibm.com>
+Date: Mon, 29 Oct 2018 13:43:36 -0500
+Subject: powerpc/pseries: Perform full re-add of CPU for topology update
+ post-migration
+
+[ Upstream commit 81b61324922c67f73813d8a9c175f3c153f6a1c6 ]
+
+On pseries systems, performing a partition migration can result in
+altering the nodes a CPU is assigned to on the destination system. For
+exampl, pre-migration on the source system CPUs are in node 1 and 3,
+post-migration on the destination system CPUs are in nodes 2 and 3.
+
+Handling the node change for a CPU can cause corruption in the slab
+cache if we hit a timing where a CPUs node is changed while cache_reap()
+is invoked. The corruption occurs because the slab cache code appears
+to rely on the CPU and slab cache pages being on the same node.
+
+The current dynamic updating of a CPUs node done in arch/powerpc/mm/numa.c
+does not prevent us from hitting this scenario.
+
+Changing the device tree property update notification handler that
+recognizes an affinity change for a CPU to do a full DLPAR remove and
+add of the CPU instead of dynamically changing its node resolves this
+issue.
+
+Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
+Signed-off-by: Michael W. Bringmann <mwb@linux.vnet.ibm.com>
+Tested-by: Michael W. Bringmann <mwb@linux.vnet.ibm.com>
+Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ arch/powerpc/include/asm/topology.h | 2 ++
+ arch/powerpc/mm/numa.c | 9 +--------
+ arch/powerpc/platforms/pseries/hotplug-cpu.c | 19 +++++++++++++++++++
+ 3 files changed, 22 insertions(+), 8 deletions(-)
+
+diff --git a/arch/powerpc/include/asm/topology.h b/arch/powerpc/include/asm/topology.h
+index a4a718dbfec6..f85e2b01c3df 100644
+--- a/arch/powerpc/include/asm/topology.h
++++ b/arch/powerpc/include/asm/topology.h
+@@ -132,6 +132,8 @@ static inline void shared_proc_topology_init(void) {}
+ #define topology_sibling_cpumask(cpu) (per_cpu(cpu_sibling_map, cpu))
+ #define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu))
+ #define topology_core_id(cpu) (cpu_to_core_id(cpu))
++
++int dlpar_cpu_readd(int cpu);
+ #endif
+ #endif
+
+diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
+index 5500e4edabc6..10fb43efef50 100644
+--- a/arch/powerpc/mm/numa.c
++++ b/arch/powerpc/mm/numa.c
+@@ -1461,13 +1461,6 @@ static void reset_topology_timer(void)
+
+ #ifdef CONFIG_SMP
+
+-static void stage_topology_update(int core_id)
+-{
+- cpumask_or(&cpu_associativity_changes_mask,
+- &cpu_associativity_changes_mask, cpu_sibling_mask(core_id));
+- reset_topology_timer();
+-}
+-
+ static int dt_update_callback(struct notifier_block *nb,
+ unsigned long action, void *data)
+ {
+@@ -1480,7 +1473,7 @@ static int dt_update_callback(struct notifier_block *nb,
+ !of_prop_cmp(update->prop->name, "ibm,associativity")) {
+ u32 core_id;
+ of_property_read_u32(update->dn, "reg", &core_id);
+- stage_topology_update(core_id);
++ rc = dlpar_cpu_readd(core_id);
+ rc = NOTIFY_OK;
+ }
+ break;
+diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
+index 6ef77caf7bcf..1d3f9313c02f 100644
+--- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
++++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
+@@ -802,6 +802,25 @@ static int dlpar_cpu_add_by_count(u32 cpus_to_add)
+ return rc;
+ }
+
++int dlpar_cpu_readd(int cpu)
++{
++ struct device_node *dn;
++ struct device *dev;
++ u32 drc_index;
++ int rc;
++
++ dev = get_cpu_device(cpu);
++ dn = dev->of_node;
++
++ rc = of_property_read_u32(dn, "ibm,my-drc-index", &drc_index);
++
++ rc = dlpar_cpu_remove_by_index(drc_index);
++ if (!rc)
++ rc = dlpar_cpu_add(drc_index);
++
++ return rc;
++}
++
+ int dlpar_cpu(struct pseries_hp_errorlog *hp_elog)
+ {
+ u32 count, drc_index;
+--
+2.19.1
+
--- /dev/null
+From 3405de2d79b9c33ae5b60280b906a50c48b6199f Mon Sep 17 00:00:00 2001
+From: Nathan Chancellor <natechancellor@gmail.com>
+Date: Mon, 25 Feb 2019 22:38:55 -0700
+Subject: powerpc/xmon: Fix opcode being uninitialized in print_insn_powerpc
+
+[ Upstream commit e7140639b1de65bba435a6bd772d134901141f86 ]
+
+When building with -Wsometimes-uninitialized, Clang warns:
+
+ arch/powerpc/xmon/ppc-dis.c:157:7: warning: variable 'opcode' is used
+ uninitialized whenever 'if' condition is false
+ [-Wsometimes-uninitialized]
+ if (cpu_has_feature(CPU_FTRS_POWER9))
+ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ arch/powerpc/xmon/ppc-dis.c:167:7: note: uninitialized use occurs here
+ if (opcode == NULL)
+ ^~~~~~
+ arch/powerpc/xmon/ppc-dis.c:157:3: note: remove the 'if' if its
+ condition is always true
+ if (cpu_has_feature(CPU_FTRS_POWER9))
+ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ arch/powerpc/xmon/ppc-dis.c:132:38: note: initialize the variable
+ 'opcode' to silence this warning
+ const struct powerpc_opcode *opcode;
+ ^
+ = NULL
+ 1 warning generated.
+
+This warning seems to make no sense on the surface because opcode is set
+to NULL right below this statement. However, there is a comma instead of
+semicolon to end the dialect assignment, meaning that the opcode
+assignment only happens in the if statement. Properly terminate that
+line so that Clang no longer warns.
+
+Fixes: 5b102782c7f4 ("powerpc/xmon: Enable disassembly files (compilation changes)")
+Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
+Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
+Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ arch/powerpc/xmon/ppc-dis.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/arch/powerpc/xmon/ppc-dis.c b/arch/powerpc/xmon/ppc-dis.c
+index 9deea5ee13f6..27f1e6415036 100644
+--- a/arch/powerpc/xmon/ppc-dis.c
++++ b/arch/powerpc/xmon/ppc-dis.c
+@@ -158,7 +158,7 @@ int print_insn_powerpc (unsigned long insn, unsigned long memaddr)
+ dialect |= (PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6 | PPC_OPCODE_POWER7
+ | PPC_OPCODE_POWER8 | PPC_OPCODE_POWER9 | PPC_OPCODE_HTM
+ | PPC_OPCODE_ALTIVEC | PPC_OPCODE_ALTIVEC2
+- | PPC_OPCODE_VSX | PPC_OPCODE_VSX3),
++ | PPC_OPCODE_VSX | PPC_OPCODE_VSX3);
+
+ /* Get the major opcode of the insn. */
+ opcode = NULL;
+--
+2.19.1
+
--- /dev/null
+From 7b6dd908ae03c8687a915d6eb0a38a10560fa98e Mon Sep 17 00:00:00 2001
+From: Axel Lin <axel.lin@ingics.com>
+Date: Thu, 10 Jan 2019 17:26:16 +0800
+Subject: regulator: act8865: Fix act8600_sudcdc_voltage_ranges setting
+
+[ Upstream commit f01a7beb6791f1c419424c1a6958b7d0a289c974 ]
+
+The act8600_sudcdc_voltage_ranges setting does not match the datasheet.
+
+The problems in below entry:
+ REGULATOR_LINEAR_RANGE(19000000, 191, 255, 400000),
+
+1. The off-by-one min_sel causes wrong volatage calculation.
+ The min_sel should be 192.
+2. According to the datasheet[1] Table 7. (on page 43):
+ The selector 248 (0b11111000) ~ 255 (0b11111111) are 41.400V.
+
+Also fix off-by-one for ACT8600_SUDCDC_VOLTAGE_NUM.
+
+[1] https://active-semi.com/wp-content/uploads/ACT8600_Datasheet.pdf
+
+Fixes: df3a950e4e73 ("regulator: act8865: Add act8600 support")
+Signed-off-by: Axel Lin <axel.lin@ingics.com>
+Signed-off-by: Mark Brown <broonie@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/regulator/act8865-regulator.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/regulator/act8865-regulator.c b/drivers/regulator/act8865-regulator.c
+index 21e20483bd91..e0239cf3f56d 100644
+--- a/drivers/regulator/act8865-regulator.c
++++ b/drivers/regulator/act8865-regulator.c
+@@ -131,7 +131,7 @@
+ * ACT8865 voltage number
+ */
+ #define ACT8865_VOLTAGE_NUM 64
+-#define ACT8600_SUDCDC_VOLTAGE_NUM 255
++#define ACT8600_SUDCDC_VOLTAGE_NUM 256
+
+ struct act8865 {
+ struct regmap *regmap;
+@@ -222,7 +222,8 @@ static const struct regulator_linear_range act8600_sudcdc_voltage_ranges[] = {
+ REGULATOR_LINEAR_RANGE(3000000, 0, 63, 0),
+ REGULATOR_LINEAR_RANGE(3000000, 64, 159, 100000),
+ REGULATOR_LINEAR_RANGE(12600000, 160, 191, 200000),
+- REGULATOR_LINEAR_RANGE(19000000, 191, 255, 400000),
++ REGULATOR_LINEAR_RANGE(19000000, 192, 247, 400000),
++ REGULATOR_LINEAR_RANGE(41400000, 248, 255, 0),
+ };
+
+ static struct regulator_ops act8865_ops = {
+--
+2.19.1
+
--- /dev/null
+From af72594cdb9945a3edfa8909d6685e8c97c8a1be Mon Sep 17 00:00:00 2001
+From: Sebastian Ott <sebott@linux.ibm.com>
+Date: Thu, 14 Feb 2019 14:46:23 +0100
+Subject: s390/ism: ignore some errors during deregistration
+
+[ Upstream commit 0ff06c44efeede4acd068847d3bf8cf894b6c664 ]
+
+Prior to dma unmap/free operations the ism driver tries to ensure
+that the memory is no longer accessed by the HW. When errors
+during deregistration of memory regions from the HW occur the ism
+driver will not unmap/free this memory.
+
+When we receive notification from the hypervisor that a PCI function
+has been detached we can no longer access the device and would never
+unmap/free these memory regions which led to complaints by the DMA
+debug API.
+
+Treat this kind of errors during the deregistration of memory regions
+from the HW as success since it is already ensured that the memory
+is no longer accessed by HW.
+
+Reported-by: Karsten Graul <kgraul@linux.ibm.com>
+Reported-by: Hans Wippel <hwippel@linux.ibm.com>
+Signed-off-by: Sebastian Ott <sebott@linux.ibm.com>
+Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/s390/net/ism_drv.c | 12 +++++++++---
+ 1 file changed, 9 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/s390/net/ism_drv.c b/drivers/s390/net/ism_drv.c
+index 8684bcec8ff4..00cc96341411 100644
+--- a/drivers/s390/net/ism_drv.c
++++ b/drivers/s390/net/ism_drv.c
+@@ -141,10 +141,13 @@ static int register_ieq(struct ism_dev *ism)
+
+ static int unregister_sba(struct ism_dev *ism)
+ {
++ int ret;
++
+ if (!ism->sba)
+ return 0;
+
+- if (ism_cmd_simple(ism, ISM_UNREG_SBA))
++ ret = ism_cmd_simple(ism, ISM_UNREG_SBA);
++ if (ret && ret != ISM_ERROR)
+ return -EIO;
+
+ dma_free_coherent(&ism->pdev->dev, PAGE_SIZE,
+@@ -158,10 +161,13 @@ static int unregister_sba(struct ism_dev *ism)
+
+ static int unregister_ieq(struct ism_dev *ism)
+ {
++ int ret;
++
+ if (!ism->ieq)
+ return 0;
+
+- if (ism_cmd_simple(ism, ISM_UNREG_IEQ))
++ ret = ism_cmd_simple(ism, ISM_UNREG_IEQ);
++ if (ret && ret != ISM_ERROR)
+ return -EIO;
+
+ dma_free_coherent(&ism->pdev->dev, PAGE_SIZE,
+@@ -288,7 +294,7 @@ static int ism_unregister_dmb(struct smcd_dev *smcd, struct smcd_dmb *dmb)
+ cmd.request.dmb_tok = dmb->dmb_tok;
+
+ ret = ism_cmd(ism, &cmd);
+- if (ret)
++ if (ret && ret != ISM_ERROR)
+ goto out;
+
+ ism_free_dmb(ism, dmb);
+--
+2.19.1
+
--- /dev/null
+From fc823c03daae792612412a48bd8eb5ee6f4cbbf7 Mon Sep 17 00:00:00 2001
+From: Andrea Parri <andrea.parri@amarulasolutions.com>
+Date: Mon, 21 Jan 2019 16:52:40 +0100
+Subject: sched/core: Use READ_ONCE()/WRITE_ONCE() in
+ move_queued_task()/task_rq_lock()
+
+[ Upstream commit c546951d9c9300065bad253ecdf1ac59ce9d06c8 ]
+
+move_queued_task() synchronizes with task_rq_lock() as follows:
+
+ move_queued_task() task_rq_lock()
+
+ [S] ->on_rq = MIGRATING [L] rq = task_rq()
+ WMB (__set_task_cpu()) ACQUIRE (rq->lock);
+ [S] ->cpu = new_cpu [L] ->on_rq
+
+where "[L] rq = task_rq()" is ordered before "ACQUIRE (rq->lock)" by an
+address dependency and, in turn, "ACQUIRE (rq->lock)" is ordered before
+"[L] ->on_rq" by the ACQUIRE itself.
+
+Use READ_ONCE() to load ->cpu in task_rq() (c.f., task_cpu()) to honor
+this address dependency. Also, mark the accesses to ->cpu and ->on_rq
+with READ_ONCE()/WRITE_ONCE() to comply with the LKMM.
+
+Signed-off-by: Andrea Parri <andrea.parri@amarulasolutions.com>
+Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
+Cc: Alan Stern <stern@rowland.harvard.edu>
+Cc: Linus Torvalds <torvalds@linux-foundation.org>
+Cc: Mike Galbraith <efault@gmx.de>
+Cc: Paul E. McKenney <paulmck@linux.ibm.com>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Cc: Will Deacon <will.deacon@arm.com>
+Link: https://lkml.kernel.org/r/20190121155240.27173-1-andrea.parri@amarulasolutions.com
+Signed-off-by: Ingo Molnar <mingo@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ include/linux/sched.h | 4 ++--
+ kernel/sched/core.c | 9 +++++----
+ kernel/sched/sched.h | 6 +++---
+ 3 files changed, 10 insertions(+), 9 deletions(-)
+
+diff --git a/include/linux/sched.h b/include/linux/sched.h
+index 4abb5bd74b04..5dc024e28397 100644
+--- a/include/linux/sched.h
++++ b/include/linux/sched.h
+@@ -1737,9 +1737,9 @@ static __always_inline bool need_resched(void)
+ static inline unsigned int task_cpu(const struct task_struct *p)
+ {
+ #ifdef CONFIG_THREAD_INFO_IN_TASK
+- return p->cpu;
++ return READ_ONCE(p->cpu);
+ #else
+- return task_thread_info(p)->cpu;
++ return READ_ONCE(task_thread_info(p)->cpu);
+ #endif
+ }
+
+diff --git a/kernel/sched/core.c b/kernel/sched/core.c
+index 152a0b0c91bb..9a4f57d7e931 100644
+--- a/kernel/sched/core.c
++++ b/kernel/sched/core.c
+@@ -107,11 +107,12 @@ struct rq *task_rq_lock(struct task_struct *p, struct rq_flags *rf)
+ * [L] ->on_rq
+ * RELEASE (rq->lock)
+ *
+- * If we observe the old CPU in task_rq_lock, the acquire of
++ * If we observe the old CPU in task_rq_lock(), the acquire of
+ * the old rq->lock will fully serialize against the stores.
+ *
+- * If we observe the new CPU in task_rq_lock, the acquire will
+- * pair with the WMB to ensure we must then also see migrating.
++ * If we observe the new CPU in task_rq_lock(), the address
++ * dependency headed by '[L] rq = task_rq()' and the acquire
++ * will pair with the WMB to ensure we then also see migrating.
+ */
+ if (likely(rq == task_rq(p) && !task_on_rq_migrating(p))) {
+ rq_pin_lock(rq, rf);
+@@ -910,7 +911,7 @@ static struct rq *move_queued_task(struct rq *rq, struct rq_flags *rf,
+ {
+ lockdep_assert_held(&rq->lock);
+
+- p->on_rq = TASK_ON_RQ_MIGRATING;
++ WRITE_ONCE(p->on_rq, TASK_ON_RQ_MIGRATING);
+ dequeue_task(rq, p, DEQUEUE_NOCLOCK);
+ set_task_cpu(p, new_cpu);
+ rq_unlock(rq, rf);
+diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
+index b63172288f7b..4c7a837d7c14 100644
+--- a/kernel/sched/sched.h
++++ b/kernel/sched/sched.h
+@@ -1331,9 +1331,9 @@ static inline void __set_task_cpu(struct task_struct *p, unsigned int cpu)
+ */
+ smp_wmb();
+ #ifdef CONFIG_THREAD_INFO_IN_TASK
+- p->cpu = cpu;
++ WRITE_ONCE(p->cpu, cpu);
+ #else
+- task_thread_info(p)->cpu = cpu;
++ WRITE_ONCE(task_thread_info(p)->cpu, cpu);
+ #endif
+ p->wake_cpu = cpu;
+ #endif
+@@ -1434,7 +1434,7 @@ static inline int task_on_rq_queued(struct task_struct *p)
+
+ static inline int task_on_rq_migrating(struct task_struct *p)
+ {
+- return p->on_rq == TASK_ON_RQ_MIGRATING;
++ return READ_ONCE(p->on_rq) == TASK_ON_RQ_MIGRATING;
+ }
+
+ /*
+--
+2.19.1
+
--- /dev/null
+From 58bbfbca388e97b886247d17f2f5c3c98adc7776 Mon Sep 17 00:00:00 2001
+From: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
+Date: Tue, 29 Jan 2019 10:12:45 -0500
+Subject: sched/debug: Initialize sd_sysctl_cpus if !CONFIG_CPUMASK_OFFSTACK
+
+[ Upstream commit 1ca4fa3ab604734e38e2a3000c9abf788512ffa7 ]
+
+register_sched_domain_sysctl() copies the cpu_possible_mask into
+sd_sysctl_cpus, but only if sd_sysctl_cpus hasn't already been
+allocated (ie, CONFIG_CPUMASK_OFFSTACK is set). However, when
+CONFIG_CPUMASK_OFFSTACK is not set, sd_sysctl_cpus is left
+uninitialized (all zeroes) and the kernel may fail to initialize
+sched_domain sysctl entries for all possible CPUs.
+
+This is visible to the user if the kernel is booted with maxcpus=n, or
+if ACPI tables have been modified to leave CPUs offline, and then
+checking for missing /proc/sys/kernel/sched_domain/cpu* entries.
+
+Fix this by separating the allocation and initialization, and adding a
+flag to initialize the possible CPU entries while system booting only.
+
+Tested-by: Syuuichirou Ishii <ishii.shuuichir@jp.fujitsu.com>
+Tested-by: Tarumizu, Kohei <tarumizu.kohei@jp.fujitsu.com>
+Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
+Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
+Reviewed-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
+Acked-by: Joe Lawrence <joe.lawrence@redhat.com>
+Cc: Linus Torvalds <torvalds@linux-foundation.org>
+Cc: Masayoshi Mizuma <msys.mizuma@gmail.com>
+Cc: Mike Galbraith <efault@gmx.de>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Link: https://lkml.kernel.org/r/20190129151245.5073-1-msys.mizuma@gmail.com
+Signed-off-by: Ingo Molnar <mingo@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ kernel/sched/debug.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
+index 6383aa6a60ca..141ea9ff210e 100644
+--- a/kernel/sched/debug.c
++++ b/kernel/sched/debug.c
+@@ -315,6 +315,7 @@ void register_sched_domain_sysctl(void)
+ {
+ static struct ctl_table *cpu_entries;
+ static struct ctl_table **cpu_idx;
++ static bool init_done = false;
+ char buf[32];
+ int i;
+
+@@ -344,7 +345,10 @@ void register_sched_domain_sysctl(void)
+ if (!cpumask_available(sd_sysctl_cpus)) {
+ if (!alloc_cpumask_var(&sd_sysctl_cpus, GFP_KERNEL))
+ return;
++ }
+
++ if (!init_done) {
++ init_done = true;
+ /* init to possible to not have holes in @cpu_entries */
+ cpumask_copy(sd_sysctl_cpus, cpu_possible_mask);
+ }
+--
+2.19.1
+
--- /dev/null
+From 411301dde2f0648c6d6c5f5bb5d935aedb87a92e Mon Sep 17 00:00:00 2001
+From: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
+Date: Fri, 18 Jan 2019 15:49:36 +0100
+Subject: sched/topology: Fix percpu data types in struct sd_data & struct
+ s_data
+
+[ Upstream commit 99687cdbb3f6c8e32bcc7f37496e811f30460e48 ]
+
+The percpu members of struct sd_data and s_data are declared as:
+
+ struct ... ** __percpu member;
+
+So their type is:
+
+ __percpu pointer to pointer to struct ...
+
+But looking at how they're used, their type should be:
+
+ pointer to __percpu pointer to struct ...
+
+and they should thus be declared as:
+
+ struct ... * __percpu *member;
+
+So fix the placement of '__percpu' in the definition of these
+structures.
+
+This addresses a bunch of Sparse's warnings like:
+
+ warning: incorrect type in initializer (different address spaces)
+ expected void const [noderef] <asn:3> *__vpp_verify
+ got struct sched_domain **
+
+Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
+Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
+Cc: Linus Torvalds <torvalds@linux-foundation.org>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Link: https://lkml.kernel.org/r/20190118144936.79158-1-luc.vanoostenryck@gmail.com
+Signed-off-by: Ingo Molnar <mingo@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ include/linux/sched/topology.h | 8 ++++----
+ kernel/sched/topology.c | 2 +-
+ 2 files changed, 5 insertions(+), 5 deletions(-)
+
+diff --git a/include/linux/sched/topology.h b/include/linux/sched/topology.h
+index 26347741ba50..15f3f61f7e3b 100644
+--- a/include/linux/sched/topology.h
++++ b/include/linux/sched/topology.h
+@@ -177,10 +177,10 @@ typedef int (*sched_domain_flags_f)(void);
+ #define SDTL_OVERLAP 0x01
+
+ struct sd_data {
+- struct sched_domain **__percpu sd;
+- struct sched_domain_shared **__percpu sds;
+- struct sched_group **__percpu sg;
+- struct sched_group_capacity **__percpu sgc;
++ struct sched_domain *__percpu *sd;
++ struct sched_domain_shared *__percpu *sds;
++ struct sched_group *__percpu *sg;
++ struct sched_group_capacity *__percpu *sgc;
+ };
+
+ struct sched_domain_topology_level {
+diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c
+index 505a41c42b96..c0a751464971 100644
+--- a/kernel/sched/topology.c
++++ b/kernel/sched/topology.c
+@@ -477,7 +477,7 @@ cpu_attach_domain(struct sched_domain *sd, struct root_domain *rd, int cpu)
+ }
+
+ struct s_data {
+- struct sched_domain ** __percpu sd;
++ struct sched_domain * __percpu *sd;
+ struct root_domain *rd;
+ };
+
+--
+2.19.1
+
--- /dev/null
+From b82e5b9ad86533fd2b65a3966a0133d4b2d1e1da Mon Sep 17 00:00:00 2001
+From: Benjamin Block <bblock@linux.ibm.com>
+Date: Thu, 21 Feb 2019 10:18:00 +0100
+Subject: scsi: core: replace GFP_ATOMIC with GFP_KERNEL in scsi_scan.c
+
+[ Upstream commit 1749ef00f7312679f76d5e9104c5d1e22a829038 ]
+
+We had a test-report where, under memory pressure, adding LUNs to the
+systems would fail (the tests add LUNs strictly in sequence):
+
+[ 5525.853432] scsi 0:0:1:1088045124: Direct-Access IBM 2107900 .148 PQ: 0 ANSI: 5
+[ 5525.853826] scsi 0:0:1:1088045124: alua: supports implicit TPGS
+[ 5525.853830] scsi 0:0:1:1088045124: alua: device naa.6005076303ffd32700000000000044da port group 0 rel port 43
+[ 5525.853931] sd 0:0:1:1088045124: Attached scsi generic sg10 type 0
+[ 5525.854075] sd 0:0:1:1088045124: [sdk] Disabling DIF Type 1 protection
+[ 5525.855495] sd 0:0:1:1088045124: [sdk] 2097152 512-byte logical blocks: (1.07 GB/1.00 GiB)
+[ 5525.855606] sd 0:0:1:1088045124: [sdk] Write Protect is off
+[ 5525.855609] sd 0:0:1:1088045124: [sdk] Mode Sense: ed 00 00 08
+[ 5525.855795] sd 0:0:1:1088045124: [sdk] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
+[ 5525.857838] sdk: sdk1
+[ 5525.859468] sd 0:0:1:1088045124: [sdk] Attached SCSI disk
+[ 5525.865073] sd 0:0:1:1088045124: alua: transition timeout set to 60 seconds
+[ 5525.865078] sd 0:0:1:1088045124: alua: port group 00 state A preferred supports tolusnA
+[ 5526.015070] sd 0:0:1:1088045124: alua: port group 00 state A preferred supports tolusnA
+[ 5526.015213] sd 0:0:1:1088045124: alua: port group 00 state A preferred supports tolusnA
+[ 5526.587439] scsi_alloc_sdev: Allocation failure during SCSI scanning, some SCSI devices might not be configured
+[ 5526.588562] scsi_alloc_sdev: Allocation failure during SCSI scanning, some SCSI devices might not be configured
+
+Looking at the code of scsi_alloc_sdev(), and all the calling contexts,
+there seems to be no reason to use GFP_ATMOIC here. All the different
+call-contexts use a mutex at some point, and nothing in between that
+requires no sleeping, as far as I could see. Additionally, the code that
+later allocates the block queue for the device (scsi_mq_alloc_queue())
+already uses GFP_KERNEL.
+
+There are similar allocations in two other functions:
+scsi_probe_and_add_lun(), and scsi_add_lun(),; that can also be done with
+GFP_KERNEL.
+
+Here is the contexts for the three functions so far:
+
+ scsi_alloc_sdev()
+ scsi_probe_and_add_lun()
+ scsi_sequential_lun_scan()
+ __scsi_scan_target()
+ scsi_scan_target()
+ mutex_lock()
+ scsi_scan_channel()
+ scsi_scan_host_selected()
+ mutex_lock()
+ scsi_report_lun_scan()
+ __scsi_scan_target()
+ ...
+ __scsi_add_device()
+ mutex_lock()
+ __scsi_scan_target()
+ ...
+ scsi_report_lun_scan()
+ ...
+ scsi_get_host_dev()
+ mutex_lock()
+
+ scsi_probe_and_add_lun()
+ ...
+
+ scsi_add_lun()
+ scsi_probe_and_add_lun()
+ ...
+
+So replace all these, and give them a bit of a better chance to succeed,
+with more chances of reclaim.
+
+Signed-off-by: Benjamin Block <bblock@linux.ibm.com>
+Reviewed-by: Bart Van Assche <bvanassche@acm.org>
+Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/scsi/scsi_scan.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
+index 78ca63dfba4a..9a7e3a3bd5ce 100644
+--- a/drivers/scsi/scsi_scan.c
++++ b/drivers/scsi/scsi_scan.c
+@@ -220,7 +220,7 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget,
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+
+ sdev = kzalloc(sizeof(*sdev) + shost->transportt->device_size,
+- GFP_ATOMIC);
++ GFP_KERNEL);
+ if (!sdev)
+ goto out;
+
+@@ -796,7 +796,7 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
+ */
+ sdev->inquiry = kmemdup(inq_result,
+ max_t(size_t, sdev->inquiry_len, 36),
+- GFP_ATOMIC);
++ GFP_KERNEL);
+ if (sdev->inquiry == NULL)
+ return SCSI_SCAN_NO_RESPONSE;
+
+@@ -1087,7 +1087,7 @@ static int scsi_probe_and_add_lun(struct scsi_target *starget,
+ if (!sdev)
+ goto out;
+
+- result = kmalloc(result_len, GFP_ATOMIC |
++ result = kmalloc(result_len, GFP_KERNEL |
+ ((shost->unchecked_isa_dma) ? __GFP_DMA : 0));
+ if (!result)
+ goto out_free_sdev;
+--
+2.19.1
+
--- /dev/null
+From 99460d063fad72490b9627be2d36e5e2280575fa Mon Sep 17 00:00:00 2001
+From: Sedat Dilek <sedat.dilek@gmail.com>
+Date: Fri, 15 Feb 2019 13:19:20 +0100
+Subject: scsi: fcoe: make use of fip_mode enum complete
+
+[ Upstream commit 8beb90aaf334a6efa3e924339926b5f93a234dbb ]
+
+commit 1917d42d14b7 ("fcoe: use enum for fip_mode") introduces a separate
+enum for the fip_mode that shall be used during initialisation handling
+until it is passed to fcoe_ctrl_link_up to set the initial fip_state. That
+change was incomplete and gcc quietly converted in various places between
+the fip_mode and the fip_state enum values with implicit enum conversions,
+which fortunately cannot cause any issues in the actual code's execution.
+
+clang however warns about these implicit enum conversions in the scsi
+drivers. This commit consolidates the use of the two enums, guided by
+clang's enum-conversion warnings.
+
+This commit now completes the use of the fip_mode: It expects and uses
+fip_mode in {bnx2fc,fcoe}_interface_create and fcoe_ctlr_init, and it calls
+fcoe_ctrl_set_set() with the correct values in fcoe_ctlr_link_up(). It
+also breaks the association between FIP_MODE_AUTO and FIP_ST_AUTO to
+indicate these two enums are distinct.
+
+Link: https://github.com/ClangBuiltLinux/linux/issues/151
+Fixes: 1917d42d14b7 ("fcoe: use enum for fip_mode")
+Reported-by: Dmitry Golovin <dima@golovin.in>
+Original-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
+CC: Lukas Bulwahn <lukas.bulwahn@gmail.com>
+CC: Nick Desaulniers <ndesaulniers@google.com>
+CC: Nathan Chancellor <natechancellor@gmail.com>
+Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
+Tested-by: Nathan Chancellor <natechancellor@gmail.com>
+Suggested-by: Johannes Thumshirn <jthumshirn@suse.de>
+Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com>
+Signed-off-by: Hannes Reinecke <hare@suse.com>
+Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/scsi/bnx2fc/bnx2fc_fcoe.c | 2 +-
+ drivers/scsi/fcoe/fcoe.c | 2 +-
+ drivers/scsi/fcoe/fcoe_ctlr.c | 7 +++++--
+ drivers/scsi/fcoe/fcoe_transport.c | 2 +-
+ drivers/scsi/qedf/qedf_main.c | 2 +-
+ include/scsi/libfcoe.h | 4 ++--
+ 6 files changed, 11 insertions(+), 8 deletions(-)
+
+diff --git a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c
+index 3f97ec4aac4b..780651c4fc0c 100644
+--- a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c
++++ b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c
+@@ -1445,7 +1445,7 @@ bind_err:
+ static struct bnx2fc_interface *
+ bnx2fc_interface_create(struct bnx2fc_hba *hba,
+ struct net_device *netdev,
+- enum fip_state fip_mode)
++ enum fip_mode fip_mode)
+ {
+ struct fcoe_ctlr_device *ctlr_dev;
+ struct bnx2fc_interface *interface;
+diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
+index f46b312d04bc..6768b2e8148a 100644
+--- a/drivers/scsi/fcoe/fcoe.c
++++ b/drivers/scsi/fcoe/fcoe.c
+@@ -390,7 +390,7 @@ static int fcoe_interface_setup(struct fcoe_interface *fcoe,
+ * Returns: pointer to a struct fcoe_interface or NULL on error
+ */
+ static struct fcoe_interface *fcoe_interface_create(struct net_device *netdev,
+- enum fip_state fip_mode)
++ enum fip_mode fip_mode)
+ {
+ struct fcoe_ctlr_device *ctlr_dev;
+ struct fcoe_ctlr *ctlr;
+diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c
+index 54da3166da8d..7dc4ffa24430 100644
+--- a/drivers/scsi/fcoe/fcoe_ctlr.c
++++ b/drivers/scsi/fcoe/fcoe_ctlr.c
+@@ -147,7 +147,7 @@ static void fcoe_ctlr_map_dest(struct fcoe_ctlr *fip)
+ * fcoe_ctlr_init() - Initialize the FCoE Controller instance
+ * @fip: The FCoE controller to initialize
+ */
+-void fcoe_ctlr_init(struct fcoe_ctlr *fip, enum fip_state mode)
++void fcoe_ctlr_init(struct fcoe_ctlr *fip, enum fip_mode mode)
+ {
+ fcoe_ctlr_set_state(fip, FIP_ST_LINK_WAIT);
+ fip->mode = mode;
+@@ -454,7 +454,10 @@ void fcoe_ctlr_link_up(struct fcoe_ctlr *fip)
+ mutex_unlock(&fip->ctlr_mutex);
+ fc_linkup(fip->lp);
+ } else if (fip->state == FIP_ST_LINK_WAIT) {
+- fcoe_ctlr_set_state(fip, fip->mode);
++ if (fip->mode == FIP_MODE_NON_FIP)
++ fcoe_ctlr_set_state(fip, FIP_ST_NON_FIP);
++ else
++ fcoe_ctlr_set_state(fip, FIP_ST_AUTO);
+ switch (fip->mode) {
+ default:
+ LIBFCOE_FIP_DBG(fip, "invalid mode %d\n", fip->mode);
+diff --git a/drivers/scsi/fcoe/fcoe_transport.c b/drivers/scsi/fcoe/fcoe_transport.c
+index f4909cd206d3..f15d5e1d56b1 100644
+--- a/drivers/scsi/fcoe/fcoe_transport.c
++++ b/drivers/scsi/fcoe/fcoe_transport.c
+@@ -873,7 +873,7 @@ static int fcoe_transport_create(const char *buffer,
+ int rc = -ENODEV;
+ struct net_device *netdev = NULL;
+ struct fcoe_transport *ft = NULL;
+- enum fip_state fip_mode = (enum fip_state)(long)kp->arg;
++ enum fip_mode fip_mode = (enum fip_mode)kp->arg;
+
+ mutex_lock(&ft_mutex);
+
+diff --git a/drivers/scsi/qedf/qedf_main.c b/drivers/scsi/qedf/qedf_main.c
+index 0a5dd5595dd3..cd61905ca2f5 100644
+--- a/drivers/scsi/qedf/qedf_main.c
++++ b/drivers/scsi/qedf/qedf_main.c
+@@ -1418,7 +1418,7 @@ static struct libfc_function_template qedf_lport_template = {
+
+ static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
+ {
+- fcoe_ctlr_init(&qedf->ctlr, FIP_ST_AUTO);
++ fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO);
+
+ qedf->ctlr.send = qedf_fip_send;
+ qedf->ctlr.get_src_addr = qedf_get_src_mac;
+diff --git a/include/scsi/libfcoe.h b/include/scsi/libfcoe.h
+index cb8a273732cf..bb8092fa1e36 100644
+--- a/include/scsi/libfcoe.h
++++ b/include/scsi/libfcoe.h
+@@ -79,7 +79,7 @@ enum fip_state {
+ * It must not change after fcoe_ctlr_init() sets it.
+ */
+ enum fip_mode {
+- FIP_MODE_AUTO = FIP_ST_AUTO,
++ FIP_MODE_AUTO,
+ FIP_MODE_NON_FIP,
+ FIP_MODE_FABRIC,
+ FIP_MODE_VN2VN,
+@@ -250,7 +250,7 @@ struct fcoe_rport {
+ };
+
+ /* FIP API functions */
+-void fcoe_ctlr_init(struct fcoe_ctlr *, enum fip_state);
++void fcoe_ctlr_init(struct fcoe_ctlr *, enum fip_mode);
+ void fcoe_ctlr_destroy(struct fcoe_ctlr *);
+ void fcoe_ctlr_link_up(struct fcoe_ctlr *);
+ int fcoe_ctlr_link_down(struct fcoe_ctlr *);
+--
+2.19.1
+
--- /dev/null
+From 9abdfa5551fb10a0e5e43ba8692b638e9cef109f Mon Sep 17 00:00:00 2001
+From: Xiang Chen <chenxiang66@hisilicon.com>
+Date: Thu, 28 Feb 2019 22:50:58 +0800
+Subject: scsi: hisi_sas: Fix a timeout race of driver internal and SMP IO
+
+[ Upstream commit 4790595723d4b833b18c994973d39f9efb842887 ]
+
+For internal IO and SMP IO, there is a time-out timer for them. In the
+timer handler, it checks whether IO is done according to the flag
+task->task_state_lock.
+
+There is an issue which may cause system suspended: internal IO or SMP IO
+is sent, but at that time because of hardware exception (such as inject
+2Bit ECC error), so IO is not completed and also not timeout. But, at that
+time, the SAS controller reset occurs to recover system. It will release
+the resource and set the status of IO to be SAS_TASK_STATE_DONE, so when IO
+timeout, it will never complete the completion of IO and wait for ever.
+
+[ 729.123632] Call trace:
+[ 729.126791] [<ffff00000808655c>] __switch_to+0x94/0xa8
+[ 729.133106] [<ffff000008d96e98>] __schedule+0x1e8/0x7fc
+[ 729.138975] [<ffff000008d974e0>] schedule+0x34/0x8c
+[ 729.144401] [<ffff000008d9b000>] schedule_timeout+0x1d8/0x3cc
+[ 729.150690] [<ffff000008d98218>] wait_for_common+0xdc/0x1a0
+[ 729.157101] [<ffff000008d98304>] wait_for_completion+0x28/0x34
+[ 729.165973] [<ffff000000dcefb4>] hisi_sas_internal_task_abort+0x2a0/0x424 [hisi_sas_test_main]
+[ 729.176447] [<ffff000000dd18f4>] hisi_sas_abort_task+0x244/0x2d8 [hisi_sas_test_main]
+[ 729.185258] [<ffff000008971714>] sas_eh_handle_sas_errors+0x1c8/0x7b8
+[ 729.192391] [<ffff000008972774>] sas_scsi_recover_host+0x130/0x398
+[ 729.199237] [<ffff00000894d8a8>] scsi_error_handler+0x148/0x5c0
+[ 729.206009] [<ffff0000080f4118>] kthread+0x10c/0x138
+[ 729.211563] [<ffff0000080855dc>] ret_from_fork+0x10/0x18
+
+To solve the issue, callback function task_done of those IOs need to be
+called when on SAS controller reset.
+
+Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
+Signed-off-by: John Garry <john.garry@huawei.com>
+Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/scsi/hisi_sas/hisi_sas_main.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
+index c25f3a9b0b9f..fd9d82c9033d 100644
+--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
++++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
+@@ -810,7 +810,8 @@ static void hisi_sas_do_release_task(struct hisi_hba *hisi_hba, struct sas_task
+ spin_lock_irqsave(&task->task_state_lock, flags);
+ task->task_state_flags &=
+ ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
+- task->task_state_flags |= SAS_TASK_STATE_DONE;
++ if (!slot->is_internal && task->task_proto != SAS_PROTOCOL_SMP)
++ task->task_state_flags |= SAS_TASK_STATE_DONE;
+ spin_unlock_irqrestore(&task->task_state_lock, flags);
+ }
+
+--
+2.19.1
+
--- /dev/null
+From ead061ccec67241ea5e427767cbd6f418fc16fd9 Mon Sep 17 00:00:00 2001
+From: John Garry <john.garry@huawei.com>
+Date: Thu, 28 Feb 2019 22:51:00 +0800
+Subject: scsi: hisi_sas: Set PHY linkrate when disconnected
+
+[ Upstream commit efdcad62e7b8a02fcccc5ccca57806dce1482ac8 ]
+
+When the PHY comes down, we currently do not set the negotiated linkrate:
+
+root@(none)$ pwd
+/sys/class/sas_phy/phy-0:0
+root@(none)$ more enable
+1
+root@(none)$ more negotiated_linkrate
+12.0 Gbit
+root@(none)$ echo 0 > enable
+root@(none)$ more negotiated_linkrate
+12.0 Gbit
+root@(none)$
+
+This patch fixes the driver code to set it properly when the PHY comes
+down.
+
+If the PHY had been enabled, then set unknown; otherwise, flag as disabled.
+
+The logical place to set the negotiated linkrate for this scenario is PHY
+down routine, which is called from the PHY down ISR.
+
+However, it is not possible to know if the PHY comes down due to PHY
+disable or loss of link, as sas_phy.enabled member is not set until after
+the transport disable routine is complete, which races with the PHY down
+ISR.
+
+As an imperfect solution, use sas_phy_data.enable as the flag to know if
+the PHY is down due to disable. It's imperfect, as sas_phy_data is internal
+to libsas.
+
+I can't see another way without adding a new field to hisi_sas_phy and
+managing it, or changing SCSI SAS transport.
+
+Signed-off-by: John Garry <john.garry@huawei.com>
+Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/scsi/hisi_sas/hisi_sas_main.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
+index a4e2e6aa9a6b..c25f3a9b0b9f 100644
+--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
++++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
+@@ -10,6 +10,7 @@
+ */
+
+ #include "hisi_sas.h"
++#include "../libsas/sas_internal.h"
+ #define DRV_NAME "hisi_sas"
+
+ #define DEV_IS_GONE(dev) \
+@@ -1879,9 +1880,18 @@ static int hisi_sas_write_gpio(struct sas_ha_struct *sha, u8 reg_type,
+
+ static void hisi_sas_phy_disconnected(struct hisi_sas_phy *phy)
+ {
++ struct asd_sas_phy *sas_phy = &phy->sas_phy;
++ struct sas_phy *sphy = sas_phy->phy;
++ struct sas_phy_data *d = sphy->hostdata;
++
+ phy->phy_attached = 0;
+ phy->phy_type = 0;
+ phy->port = NULL;
++
++ if (d->enable)
++ sphy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;
++ else
++ sphy->negotiated_linkrate = SAS_PHY_DISABLED;
+ }
+
+ void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy)
+--
+2.19.1
+
--- /dev/null
+From 915324bae4ad2cee1fcb76e08530d6092844d53a Mon Sep 17 00:00:00 2001
+From: Jason Yan <yanaijie@huawei.com>
+Date: Fri, 15 Feb 2019 19:50:27 +0800
+Subject: scsi: megaraid_sas: return error when create DMA pool failed
+
+[ Upstream commit bcf3b67d16a4c8ffae0aa79de5853435e683945c ]
+
+when create DMA pool for cmd frames failed, we should return -ENOMEM,
+instead of 0.
+In some case in:
+
+ megasas_init_adapter_fusion()
+
+ -->megasas_alloc_cmds()
+ -->megasas_create_frame_pool
+ create DMA pool failed,
+ --> megasas_free_cmds() [1]
+
+ -->megasas_alloc_cmds_fusion()
+ failed, then goto fail_alloc_cmds.
+ -->megasas_free_cmds() [2]
+
+we will call megasas_free_cmds twice, [1] will kfree cmd_list,
+[2] will use cmd_list.it will cause a problem:
+
+Unable to handle kernel NULL pointer dereference at virtual address
+00000000
+pgd = ffffffc000f70000
+[00000000] *pgd=0000001fbf893003, *pud=0000001fbf893003,
+*pmd=0000001fbf894003, *pte=006000006d000707
+Internal error: Oops: 96000005 [#1] SMP
+ Modules linked in:
+ CPU: 18 PID: 1 Comm: swapper/0 Not tainted
+ task: ffffffdfb9290000 ti: ffffffdfb923c000 task.ti: ffffffdfb923c000
+ PC is at megasas_free_cmds+0x30/0x70
+ LR is at megasas_free_cmds+0x24/0x70
+ ...
+ Call trace:
+ [<ffffffc0005b779c>] megasas_free_cmds+0x30/0x70
+ [<ffffffc0005bca74>] megasas_init_adapter_fusion+0x2f4/0x4d8
+ [<ffffffc0005b926c>] megasas_init_fw+0x2dc/0x760
+ [<ffffffc0005b9ab0>] megasas_probe_one+0x3c0/0xcd8
+ [<ffffffc0004a5abc>] local_pci_probe+0x4c/0xb4
+ [<ffffffc0004a5c40>] pci_device_probe+0x11c/0x14c
+ [<ffffffc00053a5e4>] driver_probe_device+0x1ec/0x430
+ [<ffffffc00053a92c>] __driver_attach+0xa8/0xb0
+ [<ffffffc000538178>] bus_for_each_dev+0x74/0xc8
+ [<ffffffc000539e88>] driver_attach+0x28/0x34
+ [<ffffffc000539a18>] bus_add_driver+0x16c/0x248
+ [<ffffffc00053b234>] driver_register+0x6c/0x138
+ [<ffffffc0004a5350>] __pci_register_driver+0x5c/0x6c
+ [<ffffffc000ce3868>] megasas_init+0xc0/0x1a8
+ [<ffffffc000082a58>] do_one_initcall+0xe8/0x1ec
+ [<ffffffc000ca7be8>] kernel_init_freeable+0x1c8/0x284
+ [<ffffffc0008d90b8>] kernel_init+0x1c/0xe4
+
+Signed-off-by: Jason Yan <yanaijie@huawei.com>
+Acked-by: Sumit Saxena <sumit.saxena@broadcom.com>
+Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/scsi/megaraid/megaraid_sas_base.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
+index f6de7526ded5..acb503ea8f0c 100644
+--- a/drivers/scsi/megaraid/megaraid_sas_base.c
++++ b/drivers/scsi/megaraid/megaraid_sas_base.c
+@@ -4155,6 +4155,7 @@ int megasas_alloc_cmds(struct megasas_instance *instance)
+ if (megasas_create_frame_pool(instance)) {
+ dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
+ megasas_free_cmds(instance);
++ return -ENOMEM;
+ }
+
+ return 0;
+--
+2.19.1
+
--- /dev/null
+From a233828ccb15c264a66b6ad66283357fbf856632 Mon Sep 17 00:00:00 2001
+From: Stanislav Fomichev <sdf@google.com>
+Date: Mon, 28 Jan 2019 09:21:16 -0800
+Subject: selftests/bpf: skip verifier tests for unsupported program types
+
+[ Upstream commit 8184d44c9a577a2f1842ed6cc844bfd4a9981d8e ]
+
+Use recently introduced bpf_probe_prog_type() to skip tests in the
+test_verifier() if bpf_verify_program() fails. The skipped test is
+indicated in the output.
+
+Example:
+
+...
+679/p bpf_get_stack return R0 within range SKIP (unsupported program
+type 5)
+680/p ld_abs: invalid op 1 OK
+...
+Summary: 863 PASSED, 165 SKIPPED, 3 FAILED
+
+Signed-off-by: Stanislav Fomichev <sdf@google.com>
+Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ tools/testing/selftests/bpf/test_verifier.c | 9 ++++++++-
+ 1 file changed, 8 insertions(+), 1 deletion(-)
+
+diff --git a/tools/testing/selftests/bpf/test_verifier.c b/tools/testing/selftests/bpf/test_verifier.c
+index 9db5a7378f40..294fc18aba2a 100644
+--- a/tools/testing/selftests/bpf/test_verifier.c
++++ b/tools/testing/selftests/bpf/test_verifier.c
+@@ -32,6 +32,7 @@
+ #include <linux/if_ether.h>
+
+ #include <bpf/bpf.h>
++#include <bpf/libbpf.h>
+
+ #ifdef HAVE_GENHDR
+ # include "autoconf.h"
+@@ -56,6 +57,7 @@
+
+ #define UNPRIV_SYSCTL "kernel/unprivileged_bpf_disabled"
+ static bool unpriv_disabled = false;
++static int skips;
+
+ struct bpf_test {
+ const char *descr;
+@@ -12770,6 +12772,11 @@ static void do_test_single(struct bpf_test *test, bool unpriv,
+ fd_prog = bpf_verify_program(prog_type ? : BPF_PROG_TYPE_SOCKET_FILTER,
+ prog, prog_len, test->flags & F_LOAD_WITH_STRICT_ALIGNMENT,
+ "GPL", 0, bpf_vlog, sizeof(bpf_vlog), 1);
++ if (fd_prog < 0 && !bpf_probe_prog_type(prog_type, 0)) {
++ printf("SKIP (unsupported program type %d)\n", prog_type);
++ skips++;
++ goto close_fds;
++ }
+
+ expected_ret = unpriv && test->result_unpriv != UNDEF ?
+ test->result_unpriv : test->result;
+@@ -12905,7 +12912,7 @@ static void get_unpriv_disabled()
+
+ static int do_test(bool unpriv, unsigned int from, unsigned int to)
+ {
+- int i, passes = 0, errors = 0, skips = 0;
++ int i, passes = 0, errors = 0;
+
+ for (i = from; i < to; i++) {
+ struct bpf_test *test = &tests[i];
+--
+2.19.1
+
--- /dev/null
+From 8801c62e0219568d5414dce8f514d7cf17eca0c8 Mon Sep 17 00:00:00 2001
+From: Tycho Andersen <tycho@tycho.ws>
+Date: Fri, 18 Jan 2019 17:12:15 -0700
+Subject: selftests: skip seccomp get_metadata test if not real root
+
+[ Upstream commit 3aa415dd2128e478ea3225b59308766de0e94d6b ]
+
+The get_metadata() test requires real root, so let's skip it if we're not
+real root.
+
+Note that I used XFAIL here because that's what the test does later if
+CONFIG_CHEKCKPOINT_RESTORE happens to not be enabled. After looking at the
+code, there doesn't seem to be a nice way to skip tests defined as TEST(),
+since there's no return code (I tried exit(KSFT_SKIP), but that didn't work
+either...). So let's do it this way to be consistent, and easier to fix
+when someone comes along and fixes it.
+
+Signed-off-by: Tycho Andersen <tycho@tycho.ws>
+Acked-by: Kees Cook <keescook@chromium.org>
+Signed-off-by: Shuah Khan <shuah@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ tools/testing/selftests/seccomp/seccomp_bpf.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c b/tools/testing/selftests/seccomp/seccomp_bpf.c
+index 83057fa9d391..14cad657bc6a 100644
+--- a/tools/testing/selftests/seccomp/seccomp_bpf.c
++++ b/tools/testing/selftests/seccomp/seccomp_bpf.c
+@@ -2920,6 +2920,12 @@ TEST(get_metadata)
+ struct seccomp_metadata md;
+ long ret;
+
++ /* Only real root can get metadata. */
++ if (geteuid()) {
++ XFAIL(return, "get_metadata requires real root");
++ return;
++ }
++
+ ASSERT_EQ(0, pipe(pipefd));
+
+ pid = fork();
+--
+2.19.1
+
--- /dev/null
+From 177c5d4ffd7db85aa5be91b4fd25a70fdf392df5 Mon Sep 17 00:00:00 2001
+From: Ondrej Mosnacek <omosnace@redhat.com>
+Date: Fri, 21 Dec 2018 21:18:53 +0100
+Subject: selinux: do not override context on context mounts
+
+[ Upstream commit 53e0c2aa9a59a48e3798ef193d573ade85aa80f5 ]
+
+Ignore all selinux_inode_notifysecctx() calls on mounts with SBLABEL_MNT
+flag unset. This is achived by returning -EOPNOTSUPP for this case in
+selinux_inode_setsecurtity() (because that function should not be called
+in such case anyway) and translating this error to 0 in
+selinux_inode_notifysecctx().
+
+This fixes behavior of kernfs-based filesystems when mounted with the
+'context=' option. Before this patch, if a node's context had been
+explicitly set to a non-default value and later the filesystem has been
+remounted with the 'context=' option, then this node would show up as
+having the manually-set context and not the mount-specified one.
+
+Steps to reproduce:
+ # mount -t cgroup2 cgroup2 /sys/fs/cgroup/unified
+ # chcon unconfined_u:object_r:user_home_t:s0 /sys/fs/cgroup/unified/cgroup.stat
+ # ls -lZ /sys/fs/cgroup/unified
+ total 0
+ -r--r--r--. 1 root root system_u:object_r:cgroup_t:s0 0 Dec 13 10:41 cgroup.controllers
+ -rw-r--r--. 1 root root system_u:object_r:cgroup_t:s0 0 Dec 13 10:41 cgroup.max.depth
+ -rw-r--r--. 1 root root system_u:object_r:cgroup_t:s0 0 Dec 13 10:41 cgroup.max.descendants
+ -rw-r--r--. 1 root root system_u:object_r:cgroup_t:s0 0 Dec 13 10:41 cgroup.procs
+ -r--r--r--. 1 root root unconfined_u:object_r:user_home_t:s0 0 Dec 13 10:41 cgroup.stat
+ -rw-r--r--. 1 root root system_u:object_r:cgroup_t:s0 0 Dec 13 10:41 cgroup.subtree_control
+ -rw-r--r--. 1 root root system_u:object_r:cgroup_t:s0 0 Dec 13 10:41 cgroup.threads
+ # umount /sys/fs/cgroup/unified
+ # mount -o context=system_u:object_r:tmpfs_t:s0 -t cgroup2 cgroup2 /sys/fs/cgroup/unified
+
+Result before:
+ # ls -lZ /sys/fs/cgroup/unified
+ total 0
+ -r--r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.controllers
+ -rw-r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.max.depth
+ -rw-r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.max.descendants
+ -rw-r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.procs
+ -r--r--r--. 1 root root unconfined_u:object_r:user_home_t:s0 0 Dec 13 10:41 cgroup.stat
+ -rw-r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.subtree_control
+ -rw-r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.threads
+
+Result after:
+ # ls -lZ /sys/fs/cgroup/unified
+ total 0
+ -r--r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.controllers
+ -rw-r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.max.depth
+ -rw-r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.max.descendants
+ -rw-r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.procs
+ -r--r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.stat
+ -rw-r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.subtree_control
+ -rw-r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.threads
+
+Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
+Reviewed-by: Stephen Smalley <sds@tycho.nsa.gov>
+Signed-off-by: Paul Moore <paul@paul-moore.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ security/selinux/hooks.c | 9 ++++++++-
+ 1 file changed, 8 insertions(+), 1 deletion(-)
+
+diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
+index 6ea3d3aa1a1e..4337b6d9369e 100644
+--- a/security/selinux/hooks.c
++++ b/security/selinux/hooks.c
+@@ -3458,12 +3458,16 @@ static int selinux_inode_setsecurity(struct inode *inode, const char *name,
+ const void *value, size_t size, int flags)
+ {
+ struct inode_security_struct *isec = inode_security_novalidate(inode);
++ struct superblock_security_struct *sbsec = inode->i_sb->s_security;
+ u32 newsid;
+ int rc;
+
+ if (strcmp(name, XATTR_SELINUX_SUFFIX))
+ return -EOPNOTSUPP;
+
++ if (!(sbsec->flags & SBLABEL_MNT))
++ return -EOPNOTSUPP;
++
+ if (!value || !size)
+ return -EACCES;
+
+@@ -6612,7 +6616,10 @@ static void selinux_inode_invalidate_secctx(struct inode *inode)
+ */
+ static int selinux_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
+ {
+- return selinux_inode_setsecurity(inode, XATTR_SELINUX_SUFFIX, ctx, ctxlen, 0);
++ int rc = selinux_inode_setsecurity(inode, XATTR_SELINUX_SUFFIX,
++ ctx, ctxlen, 0);
++ /* Do not return error when suppressing label (SBLABEL_MNT not set). */
++ return rc == -EOPNOTSUPP ? 0 : rc;
+ }
+
+ /*
+--
+2.19.1
+
--- /dev/null
+From dae3c789c91241c01c5c5fb0380b287dda7a8f76 Mon Sep 17 00:00:00 2001
+From: Lubomir Rintel <lkundrak@v3.sk>
+Date: Sun, 24 Feb 2019 12:58:02 +0100
+Subject: serial: 8250_pxa: honor the port number from devicetree
+
+[ Upstream commit fe9ed6d2483fda55465f32924fb15bce0fac3fac ]
+
+Like the other OF-enabled drivers, use the port number from the firmware if
+the devicetree specifies an alias:
+
+ aliases {
+ ...
+ serial2 = &uart2; /* Should be ttyS2 */
+ }
+
+This is how the deprecated pxa.c driver behaved, switching to 8250_pxa
+messes up the numbering.
+
+Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/tty/serial/8250/8250_pxa.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/drivers/tty/serial/8250/8250_pxa.c b/drivers/tty/serial/8250/8250_pxa.c
+index b9bcbe20a2be..c47188860e32 100644
+--- a/drivers/tty/serial/8250/8250_pxa.c
++++ b/drivers/tty/serial/8250/8250_pxa.c
+@@ -113,6 +113,10 @@ static int serial_pxa_probe(struct platform_device *pdev)
+ if (ret)
+ return ret;
+
++ ret = of_alias_get_id(pdev->dev.of_node, "serial");
++ if (ret >= 0)
++ uart.port.line = ret;
++
+ uart.port.type = PORT_XSCALE;
+ uart.port.iotype = UPIO_MEM32;
+ uart.port.mapbase = mmres->start;
+--
+2.19.1
+
ext4-cleanup-bh-release-code-in-ext4_ind_remove_space.patch
tty-serial-atmel-add-is_half_duplex-helper.patch
tty-serial-atmel-rs485-hd-w-dma-enable-rx-after-tx-is-stopped.patch
+cifs-fix-posix-lock-leak-and-invalid-ptr-deref.patch
+h8300-use-cc-cross-prefix-instead-of-hardcoding-h830.patch
+f2fs-fix-to-adapt-small-inline-xattr-space-in-__find.patch
+f2fs-fix-to-avoid-deadlock-in-f2fs_read_inline_dir.patch
+tracing-kdb-fix-ftdump-to-not-sleep.patch
+net-mlx5-avoid-panic-when-setting-vport-rate.patch
+net-mlx5-avoid-panic-when-setting-vport-mac-getting-.patch
+gpio-gpio-omap-fix-level-interrupt-idling.patch
+include-linux-relay.h-fix-percpu-annotation-in-struc.patch
+sysctl-handle-overflow-for-file-max.patch
+net-stmmac-avoid-sometimes-uninitialized-clang-warni.patch
+enic-fix-build-warning-without-config_cpumask_offsta.patch
+libbpf-force-fixdep-compilation-at-the-start-of-the-.patch
+scsi-hisi_sas-set-phy-linkrate-when-disconnected.patch
+scsi-hisi_sas-fix-a-timeout-race-of-driver-internal-.patch
+iio-adc-fix-warning-in-qualcomm-pm8xxx-hk-xoadc-driv.patch
+x86-hyperv-fix-kernel-panic-when-kexec-on-hyperv.patch
+perf-c2c-fix-c2c-report-for-empty-numa-node.patch
+mm-sparse-fix-a-bad-comparison.patch
+mm-cma.c-cma_declare_contiguous-correct-err-handling.patch
+mm-page_ext.c-fix-an-imbalance-with-kmemleak.patch
+mm-swap-bounds-check-swap_info-array-accesses-to-avo.patch
+mm-oom-don-t-kill-global-init-via-memory.oom.group.patch
+memcg-killed-threads-should-not-invoke-memcg-oom-kil.patch
+mm-mempolicy-fix-uninit-memory-access.patch
+mm-vmalloc.c-fix-kernel-bug-at-mm-vmalloc.c-512.patch
+mm-slab.c-kmemleak-no-scan-alien-caches.patch
+ocfs2-fix-a-panic-problem-caused-by-o2cb_ctl.patch
+f2fs-do-not-use-mutex-lock-in-atomic-context.patch
+fs-file.c-initialize-init_files.resize_wait.patch
+page_poison-play-nicely-with-kasan.patch
+cifs-use-correct-format-characters.patch
+dm-thin-add-sanity-checks-to-thin-pool-and-external-.patch
+f2fs-fix-to-check-inline_xattr_size-boundary-correct.patch
+cifs-accept-validate-negotiate-if-server-return-nt_s.patch
+cifs-fix-null-pointer-dereference-of-devname.patch
+fs-make-splice-and-tee-take-into-account-o_nonblock-.patch
+netfilter-nf_tables-check-the-result-of-dereferencin.patch
+netfilter-conntrack-tcp-only-close-if-rst-matches-ex.patch
+jbd2-fix-invalid-descriptor-block-checksum.patch
+fs-fix-guard_bio_eod-to-check-for-real-eod-errors.patch
+tools-lib-traceevent-fix-buffer-overflow-in-arg_eval.patch
+pci-pme-fix-hotplug-sysfs-remove-deadlock-in-pcie_pm.patch
+wil6210-check-null-pointer-in-_wil_cfg80211_merge_ex.patch
+mt76-fix-a-leaked-reference-by-adding-a-missing-of_n.patch
+crypto-crypto4xx-add-missing-of_node_put-after-of_de.patch
+crypto-cavium-zip-fix-collision-with-generic-cra_dri.patch
+usb-chipidea-grab-the-legacy-usb-phy-by-phandle-firs.patch
+powerpc-powernv-ioda-fix-locked_vm-counting-for-memo.patch
+scsi-core-replace-gfp_atomic-with-gfp_kernel-in-scsi.patch
+kbuild-invoke-syncconfig-if-include-config-auto.conf.patch
+powerpc-xmon-fix-opcode-being-uninitialized-in-print.patch
+coresight-etm4x-add-support-to-enable-etmv4.2.patch
+serial-8250_pxa-honor-the-port-number-from-devicetre.patch
+arm-8840-1-use-a-raw_spinlock_t-in-unwind.patch
+iommu-io-pgtable-arm-v7s-only-kmemleak_ignore-l2-tab.patch
+powerpc-hugetlb-handle-mmap_min_addr-correctly-in-ge.patch
+btrfs-qgroup-make-qgroup-async-transaction-commit-mo.patch
+mmc-omap-fix-the-maximum-timeout-setting.patch
+net-dsa-mv88e6xxx-add-lockdep-classes-to-fix-false-p.patch
+e1000e-fix-wformat-truncation-warnings.patch
+mlxsw-spectrum-avoid-wformat-truncation-warnings.patch
+platform-x86-ideapad-laptop-fix-no_hw_rfkill_list-fo.patch
+platform-mellanox-mlxreg-hotplug-fix-kasan-warning.patch
+loop-set-genhd_fl_no_part_scan-after-blkdev_reread_p.patch
+ib-mlx4-increase-the-timeout-for-cm-cache.patch
+clk-fractional-divider-check-parent-rate-only-if-fla.patch
+perf-annotate-fix-getting-source-line-failure.patch
+asoc-qcom-fix-of-node-refcount-unbalance-in-qcom_snd.patch
+cpufreq-acpi-cpufreq-report-if-cpu-doesn-t-support-b.patch
+efi-cper-fix-possible-out-of-bounds-access.patch
+s390-ism-ignore-some-errors-during-deregistration.patch
+scsi-megaraid_sas-return-error-when-create-dma-pool-.patch
+scsi-fcoe-make-use-of-fip_mode-enum-complete.patch
+drm-amd-display-clear-stream-mode_changed-after-comm.patch
+perf-test-fix-failure-of-evsel-tp-sched-test-on-s390.patch
+mwifiex-don-t-advertise-ibss-features-without-fw-sup.patch
+perf-report-don-t-shadow-inlined-symbol-with-differe.patch
+soc-imx-sgtl5000-add-missing-put_device.patch
+media-ov7740-fix-runtime-pm-initialization.patch
+media-sh_veu-correct-return-type-for-mem2mem-buffer-.patch
+media-s5p-jpeg-correct-return-type-for-mem2mem-buffe.patch
+media-rockchip-rga-correct-return-type-for-mem2mem-b.patch
+media-s5p-g2d-correct-return-type-for-mem2mem-buffer.patch
+media-mx2_emmaprp-correct-return-type-for-mem2mem-bu.patch
+media-mtk-jpeg-correct-return-type-for-mem2mem-buffe.patch
+mt76-usb-do-not-run-mt76u_queues_deinit-twice.patch
+xen-gntdev-do-not-destroy-context-while-dma-bufs-are.patch
+vfs-fix-preadv64v2-and-pwritev64v2-compat-syscalls-w.patch
+hid-intel-ish-hid-avoid-binding-wrong-ishtp_cl_devic.patch
+cgroup-rstat-don-t-flush-subtree-root-unless-necessa.patch
+jbd2-fix-race-when-writing-superblock.patch
+leds-lp55xx-fix-null-deref-on-firmware-load-failure.patch
+perf-report-add-s390-diagnosic-sampling-descriptor-s.patch
+iwlwifi-pcie-fix-emergency-path.patch
+acpi-video-refactor-and-fix-dmi_is_desktop.patch
+selftests-skip-seccomp-get_metadata-test-if-not-real.patch
+kprobes-prohibit-probing-on-bsearch.patch
+kprobes-prohibit-probing-on-rcu-debug-routine.patch
+netfilter-conntrack-fix-cloned-unconfirmed-skb-_nfct.patch
+arm-8833-1-ensure-that-neon-code-always-compiles-wit.patch
+arm-dts-meson8b-fix-the-ethernet-data-line-signals-i.patch
+alsa-pcm-check-if-ops-are-defined-before-suspending-.patch
+ath10k-fix-shadow-register-implementation-for-wcn399.patch
+usb-f_fs-avoid-crash-due-to-out-of-scope-stack-ptr-a.patch
+sched-topology-fix-percpu-data-types-in-struct-sd_da.patch
+bcache-fix-input-overflow-to-cache-set-sysfs-file-io.patch
+bcache-fix-input-overflow-to-sequential_cutoff.patch
+bcache-fix-potential-div-zero-error-of-writeback_rat.patch
+bcache-improve-sysfs_strtoul_clamp.patch
+genirq-avoid-summation-loops-for-proc-stat.patch
+net-marvell-mvpp2-fix-stuck-in-band-sgmii-negotiatio.patch
+iw_cxgb4-fix-srqidx-leak-during-connection-abort.patch
+net-phy-consider-latched-link-down-status-in-polling.patch
+fbdev-fbmem-fix-memory-access-if-logo-is-bigger-than.patch
+cdrom-fix-race-condition-in-cdrom_sysctl_register.patch
+drm-rcar-du-add-missing-of_node_put.patch
+drm-amd-display-don-t-re-program-planes-for-dpms-cha.patch
+drm-amd-display-disconnect-mpcc-when-changing-tg.patch
+perf-aux-make-perf_event-accessible-to-setup_aux.patch
+e1000e-fix-cyclic-resets-at-link-up-with-active-tx.patch
+e1000e-exclude-device-from-suspend-direct-complete-o.patch
+platform-x86-intel_pmc_core-fix-pch-ip-sts-reading.patch
+i2c-of-try-to-find-an-i2c-adapter-matching-the-paren.patch
+staging-spi-mt7621-add-return-code-check-on-device_r.patch
+iwlwifi-mvm-fix-rfh-config-command-with-10-cpus.patch
+asoc-fsl-asoc-card-fix-object-reference-leaks-in-fsl.patch
+sched-debug-initialize-sd_sysctl_cpus-if-config_cpum.patch
+efi-memattr-don-t-bail-on-zero-va-if-it-equals-the-r.patch
+sched-core-use-read_once-write_once-in-move_queued_t.patch
+drm-vkms-bugfix-extra-vblank-frame.patch
+arm-dts-lpc32xx-remove-leading-0x-and-0s-from-bindin.patch
+efi-arm-arm64-allow-setvirtualaddressmap-to-be-omitt.patch
+soc-qcom-gsbi-fix-error-handling-in-gsbi_probe.patch
+mt7601u-bump-supported-eeprom-version.patch
+arm-8830-1-nommu-toggle-only-bits-in-exc_return-we-a.patch
+arm-avoid-cortex-a9-livelock-on-tight-dmb-loops.patch
+block-bfq-fix-in-service-queue-check-for-queue-mergi.patch
+bpf-fix-missing-prototype-warnings.patch
+selftests-bpf-skip-verifier-tests-for-unsupported-pr.patch
+powerpc-64s-clear-on-stack-exception-marker-upon-exc.patch
+cgroup-pids-turn-cgroup_subsys-free-into-cgroup_subs.patch
+backlight-pwm_bl-use-gpiod_get_value_cansleep-to-get.patch
+tty-increase-the-default-flip-buffer-limit-to-2-640k.patch
+powerpc-pseries-perform-full-re-add-of-cpu-for-topol.patch
+drm-amd-display-enable-vblank-interrupt-during-crc-c.patch
+alsa-dice-add-support-for-solid-state-logic-duende-c.patch
+usb-dwc3-gadget-fix-otg-events-when-gadget-driver-is.patch
+platform-x86-intel-hid-missing-power-button-release-.patch
+perf-script-python-use-pybytes-for-attr-in-trace-eve.patch
+perf-script-python-add-trace_context-extension-modul.patch
+media-mt9m111-set-initial-frame-size-other-than-0x0.patch
+hwrng-virtio-avoid-repeated-init-of-completion.patch
+soc-tegra-fuse-fix-illegal-free-of-io-base-address.patch
+hid-intel-ish-ipc-handle-pimr-before-ish_wakeup-also.patch
+f2fs-ubsan-set-boolean-value-iostat_enable-correctly.patch
+hpet-fix-missing-character-in-the-__setup-code-of-hp.patch
+cpu-hotplug-mute-hotplug-lockdep-during-init.patch
+dmaengine-imx-dma-fix-warning-comparison-of-distinct.patch
+dmaengine-qcom_hidma-assign-channel-cookie-correctly.patch
+dmaengine-qcom_hidma-initialize-tx-flags-in-hidma_pr.patch
+netfilter-physdev-relax-br_netfilter-dependency.patch
+media-rcar-vin-allow-independent-vin-link-enablement.patch
+media-s5p-jpeg-check-for-fmt_ver_flag-when-doing-fmt.patch
+regulator-act8865-fix-act8600_sudcdc_voltage_ranges-.patch
+pinctrl-meson-meson8b-add-the-eth_rxd2-and-eth_rxd3-.patch
+drm-auto-set-allow_fb_modifiers-when-given-modifiers.patch
+drm-nouveau-stop-using-drm_crtc_force_disable.patch
+x86-build-specify-elf_i386-linker-emulation-explicit.patch
+selinux-do-not-override-context-on-context-mounts.patch
+brcmfmac-use-firmware_request_nowarn-for-the-clm_blo.patch
+wlcore-fix-memory-leak-in-case-wl12xx_fetch_firmware.patch
+x86-build-mark-per-cpu-symbols-as-absolute-explicitl.patch
+drm-fb-helper-fix-leaks-in-error-path-of-drm_fb_help.patch
+clk-meson-clean-up-clock-registration.patch
+clk-rockchip-fix-frac-settings-of-gpll-clock-for-rk3.patch
+dmaengine-tegra-avoid-overflow-of-byte-tracking.patch
+input-soc_button_array-fix-mapping-of-the-5th-gpio-i.patch
+drm-dp-mst-configure-no_stop_bit-correctly-for-remot.patch
+net-stmmac-avoid-one-more-sometimes-uninitialized-cl.patch
+acpi-video-extend-chassis-type-detection-with-a-lunc.patch
+bcache-fix-potential-div-zero-error-of-writeback_rat.patch-8658
+kprobes-x86-blacklist-non-attachable-interrupt-funct.patch
--- /dev/null
+From 6ceceb362eb1090d4affd32251e2b7c08e089f58 Mon Sep 17 00:00:00 2001
+From: Wen Yang <yellowriver2010@hotmail.com>
+Date: Mon, 18 Feb 2019 15:13:47 +0000
+Subject: SoC: imx-sgtl5000: add missing put_device()
+
+[ Upstream commit 8fa857da9744f513036df1c43ab57f338941ae7d ]
+
+The of_find_device_by_node() takes a reference to the underlying device
+structure, we should release that reference.
+
+Detected by coccinelle with the following warnings:
+./sound/soc/fsl/imx-sgtl5000.c:169:1-7: ERROR: missing put_device;
+call of_find_device_by_node on line 105, but without a corresponding
+object release within this function.
+./sound/soc/fsl/imx-sgtl5000.c:177:1-7: ERROR: missing put_device;
+call of_find_device_by_node on line 105, but without a corresponding
+object release within this function.
+
+Signed-off-by: Wen Yang <yellowriver2010@hotmail.com>
+Cc: Timur Tabi <timur@kernel.org>
+Cc: Nicolin Chen <nicoleotsuka@gmail.com>
+Cc: Xiubo Li <Xiubo.Lee@gmail.com>
+Cc: Fabio Estevam <festevam@gmail.com>
+Cc: Liam Girdwood <lgirdwood@gmail.com>
+Cc: Mark Brown <broonie@kernel.org>
+Cc: Jaroslav Kysela <perex@perex.cz>
+Cc: Takashi Iwai <tiwai@suse.com>
+Cc: Shawn Guo <shawnguo@kernel.org>
+Cc: Sascha Hauer <s.hauer@pengutronix.de>
+Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
+Cc: NXP Linux Team <linux-imx@nxp.com>
+Cc: alsa-devel@alsa-project.org
+Cc: linuxppc-dev@lists.ozlabs.org
+Cc: linux-arm-kernel@lists.infradead.org
+Cc: linux-kernel@vger.kernel.org
+Signed-off-by: Mark Brown <broonie@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ sound/soc/fsl/imx-sgtl5000.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/sound/soc/fsl/imx-sgtl5000.c b/sound/soc/fsl/imx-sgtl5000.c
+index c29200cf755a..9b9a7ec52905 100644
+--- a/sound/soc/fsl/imx-sgtl5000.c
++++ b/sound/soc/fsl/imx-sgtl5000.c
+@@ -108,6 +108,7 @@ static int imx_sgtl5000_probe(struct platform_device *pdev)
+ ret = -EPROBE_DEFER;
+ goto fail;
+ }
++ put_device(&ssi_pdev->dev);
+ codec_dev = of_find_i2c_device_by_node(codec_np);
+ if (!codec_dev) {
+ dev_err(&pdev->dev, "failed to find codec platform device\n");
+--
+2.19.1
+
--- /dev/null
+From b60233259f7b30b41da9b895454f8d56872d2cda Mon Sep 17 00:00:00 2001
+From: Alexey Khoroshilov <khoroshilov@ispras.ru>
+Date: Sat, 8 Dec 2018 01:57:04 +0300
+Subject: soc: qcom: gsbi: Fix error handling in gsbi_probe()
+
+[ Upstream commit 8cd09a3dd3e176c62da67efcd477a44a8d87185e ]
+
+If of_platform_populate() fails in gsbi_probe(),
+gsbi->hclk is left undisabled.
+
+Found by Linux Driver Verification project (linuxtesting.org).
+
+Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
+Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
+Signed-off-by: Andy Gross <andy.gross@linaro.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/soc/qcom/qcom_gsbi.c | 7 +++++--
+ 1 file changed, 5 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/soc/qcom/qcom_gsbi.c b/drivers/soc/qcom/qcom_gsbi.c
+index 09c669e70d63..038abc377fdb 100644
+--- a/drivers/soc/qcom/qcom_gsbi.c
++++ b/drivers/soc/qcom/qcom_gsbi.c
+@@ -138,7 +138,7 @@ static int gsbi_probe(struct platform_device *pdev)
+ struct resource *res;
+ void __iomem *base;
+ struct gsbi_info *gsbi;
+- int i;
++ int i, ret;
+ u32 mask, gsbi_num;
+ const struct crci_config *config = NULL;
+
+@@ -221,7 +221,10 @@ static int gsbi_probe(struct platform_device *pdev)
+
+ platform_set_drvdata(pdev, gsbi);
+
+- return of_platform_populate(node, NULL, NULL, &pdev->dev);
++ ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
++ if (ret)
++ clk_disable_unprepare(gsbi->hclk);
++ return ret;
+ }
+
+ static int gsbi_remove(struct platform_device *pdev)
+--
+2.19.1
+
--- /dev/null
+From 39ccc67166b242361750ba97152e0480eec4394f Mon Sep 17 00:00:00 2001
+From: Timo Alho <talho@nvidia.com>
+Date: Sun, 30 Dec 2018 17:58:08 +0200
+Subject: soc/tegra: fuse: Fix illegal free of IO base address
+
+[ Upstream commit 51294bf6b9e897d595466dcda5a3f2751906a200 ]
+
+On cases where device tree entries for fuse and clock provider are in
+different order, fuse driver needs to defer probing. This leads to
+freeing incorrect IO base address as the fuse->base variable gets
+overwritten once during first probe invocation. This leads to the
+following spew during boot:
+
+[ 3.082285] Trying to vfree() nonexistent vm area (00000000cfe8fd94)
+[ 3.082308] WARNING: CPU: 5 PID: 126 at /hdd/l4t/kernel/stable/mm/vmalloc.c:1511 __vunmap+0xcc/0xd8
+[ 3.082318] Modules linked in:
+[ 3.082330] CPU: 5 PID: 126 Comm: kworker/5:1 Tainted: G S 4.19.7-tegra-gce119d3 #1
+[ 3.082340] Hardware name: quill (DT)
+[ 3.082353] Workqueue: events deferred_probe_work_func
+[ 3.082364] pstate: 40000005 (nZcv daif -PAN -UAO)
+[ 3.082372] pc : __vunmap+0xcc/0xd8
+[ 3.082379] lr : __vunmap+0xcc/0xd8
+[ 3.082385] sp : ffff00000a1d3b60
+[ 3.082391] x29: ffff00000a1d3b60 x28: 0000000000000000
+[ 3.082402] x27: 0000000000000000 x26: ffff000008e8b610
+[ 3.082413] x25: 0000000000000000 x24: 0000000000000009
+[ 3.082423] x23: ffff000009221a90 x22: ffff000009f6d000
+[ 3.082432] x21: 0000000000000000 x20: 0000000000000000
+[ 3.082442] x19: ffff000009f6d000 x18: ffffffffffffffff
+[ 3.082452] x17: 0000000000000000 x16: 0000000000000000
+[ 3.082462] x15: ffff0000091396c8 x14: 0720072007200720
+[ 3.082471] x13: 0720072007200720 x12: 0720072907340739
+[ 3.082481] x11: 0764076607380765 x10: 0766076307300730
+[ 3.082491] x9 : 0730073007300730 x8 : 0730073007280720
+[ 3.082501] x7 : 0761076507720761 x6 : 0000000000000102
+[ 3.082510] x5 : 0000000000000000 x4 : 0000000000000000
+[ 3.082519] x3 : ffffffffffffffff x2 : ffff000009150ff8
+[ 3.082528] x1 : 3d95b1429fff5200 x0 : 0000000000000000
+[ 3.082538] Call trace:
+[ 3.082545] __vunmap+0xcc/0xd8
+[ 3.082552] vunmap+0x24/0x30
+[ 3.082561] __iounmap+0x2c/0x38
+[ 3.082569] tegra_fuse_probe+0xc8/0x118
+[ 3.082577] platform_drv_probe+0x50/0xa0
+[ 3.082585] really_probe+0x1b0/0x288
+[ 3.082593] driver_probe_device+0x58/0x100
+[ 3.082601] __device_attach_driver+0x98/0xf0
+[ 3.082609] bus_for_each_drv+0x64/0xc8
+[ 3.082616] __device_attach+0xd8/0x130
+[ 3.082624] device_initial_probe+0x10/0x18
+[ 3.082631] bus_probe_device+0x90/0x98
+[ 3.082638] deferred_probe_work_func+0x74/0xb0
+[ 3.082649] process_one_work+0x1e0/0x318
+[ 3.082656] worker_thread+0x228/0x450
+[ 3.082664] kthread+0x128/0x130
+[ 3.082672] ret_from_fork+0x10/0x18
+[ 3.082678] ---[ end trace 0810fe6ba772c1c7 ]---
+
+Fix this by retaining the value of fuse->base until driver has
+successfully probed.
+
+Signed-off-by: Timo Alho <talho@nvidia.com>
+Acked-by: Jon Hunter <jonathanh@nvidia.com>
+Signed-off-by: Thierry Reding <treding@nvidia.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/soc/tegra/fuse/fuse-tegra.c | 12 +++++++++---
+ 1 file changed, 9 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/soc/tegra/fuse/fuse-tegra.c b/drivers/soc/tegra/fuse/fuse-tegra.c
+index a33ee8ef8b6b..51625703399e 100644
+--- a/drivers/soc/tegra/fuse/fuse-tegra.c
++++ b/drivers/soc/tegra/fuse/fuse-tegra.c
+@@ -137,13 +137,17 @@ static int tegra_fuse_probe(struct platform_device *pdev)
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ fuse->phys = res->start;
+ fuse->base = devm_ioremap_resource(&pdev->dev, res);
+- if (IS_ERR(fuse->base))
+- return PTR_ERR(fuse->base);
++ if (IS_ERR(fuse->base)) {
++ err = PTR_ERR(fuse->base);
++ fuse->base = base;
++ return err;
++ }
+
+ fuse->clk = devm_clk_get(&pdev->dev, "fuse");
+ if (IS_ERR(fuse->clk)) {
+ dev_err(&pdev->dev, "failed to get FUSE clock: %ld",
+ PTR_ERR(fuse->clk));
++ fuse->base = base;
+ return PTR_ERR(fuse->clk);
+ }
+
+@@ -152,8 +156,10 @@ static int tegra_fuse_probe(struct platform_device *pdev)
+
+ if (fuse->soc->probe) {
+ err = fuse->soc->probe(fuse);
+- if (err < 0)
++ if (err < 0) {
++ fuse->base = base;
+ return err;
++ }
+ }
+
+ if (tegra_fuse_create_sysfs(&pdev->dev, fuse->soc->info->size,
+--
+2.19.1
+
--- /dev/null
+From 8b193362def74887b8973ff84d6aac1698b8e3d1 Mon Sep 17 00:00:00 2001
+From: Stefan Roese <sr@denx.de>
+Date: Fri, 1 Feb 2019 11:17:09 +0100
+Subject: staging: spi: mt7621: Add return code check on device_reset()
+
+[ Upstream commit 46c337872f34bc6387b0c29a4964f562c70139e3 ]
+
+This patch adds a return code check on device_reset() and removes the
+compile warning.
+
+Signed-off-by: Stefan Roese <sr@denx.de>
+Cc: Mark Brown <broonie@kernel.org>
+Cc: Sankalp Negi <sankalpnegi2310@gmail.com>
+Cc: Chuanhong Guo <gch981213@gmail.com>
+Cc: John Crispin <john@phrozen.org>
+Reviewed-by: NeilBrown <neil@brown.name>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/staging/mt7621-spi/spi-mt7621.c | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/staging/mt7621-spi/spi-mt7621.c b/drivers/staging/mt7621-spi/spi-mt7621.c
+index d045b5568e0f..578aa6824ad3 100644
+--- a/drivers/staging/mt7621-spi/spi-mt7621.c
++++ b/drivers/staging/mt7621-spi/spi-mt7621.c
+@@ -429,6 +429,7 @@ static int mt7621_spi_probe(struct platform_device *pdev)
+ int status = 0;
+ struct clk *clk;
+ struct mt7621_spi_ops *ops;
++ int ret;
+
+ match = of_match_device(mt7621_spi_match, &pdev->dev);
+ if (!match)
+@@ -476,7 +477,11 @@ static int mt7621_spi_probe(struct platform_device *pdev)
+ rs->pending_write = 0;
+ dev_info(&pdev->dev, "sys_freq: %u\n", rs->sys_freq);
+
+- device_reset(&pdev->dev);
++ ret = device_reset(&pdev->dev);
++ if (ret) {
++ dev_err(&pdev->dev, "SPI reset failed!\n");
++ return ret;
++ }
+
+ mt7621_spi_reset(rs, 0);
+
+--
+2.19.1
+
--- /dev/null
+From edacb26f86da90630d307e52e96c8788187217a4 Mon Sep 17 00:00:00 2001
+From: Christian Brauner <christian@brauner.io>
+Date: Thu, 7 Mar 2019 16:29:43 -0800
+Subject: sysctl: handle overflow for file-max
+
+[ Upstream commit 32a5ad9c22852e6bd9e74bdec5934ef9d1480bc5 ]
+
+Currently, when writing
+
+ echo 18446744073709551616 > /proc/sys/fs/file-max
+
+/proc/sys/fs/file-max will overflow and be set to 0. That quickly
+crashes the system.
+
+This commit sets the max and min value for file-max. The max value is
+set to long int. Any higher value cannot currently be used as the
+percpu counters are long ints and not unsigned integers.
+
+Note that the file-max value is ultimately parsed via
+__do_proc_doulongvec_minmax(). This function does not report error when
+min or max are exceeded. Which means if a value largen that long int is
+written userspace will not receive an error instead the old value will be
+kept. There is an argument to be made that this should be changed and
+__do_proc_doulongvec_minmax() should return an error when a dedicated min
+or max value are exceeded. However this has the potential to break
+userspace so let's defer this to an RFC patch.
+
+Link: http://lkml.kernel.org/r/20190107222700.15954-3-christian@brauner.io
+Signed-off-by: Christian Brauner <christian@brauner.io>
+Acked-by: Kees Cook <keescook@chromium.org>
+Cc: Alexey Dobriyan <adobriyan@gmail.com>
+Cc: Al Viro <viro@zeniv.linux.org.uk>
+Cc: Dominik Brodowski <linux@dominikbrodowski.net>
+Cc: "Eric W. Biederman" <ebiederm@xmission.com>
+Cc: Joe Lawrence <joe.lawrence@redhat.com>
+Cc: Luis Chamberlain <mcgrof@kernel.org>
+Cc: Waiman Long <longman@redhat.com>
+[christian@brauner.io: v4]
+ Link: http://lkml.kernel.org/r/20190210203943.8227-3-christian@brauner.io
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ kernel/sysctl.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/kernel/sysctl.c b/kernel/sysctl.c
+index 3b86acd5de4e..9e22660153ff 100644
+--- a/kernel/sysctl.c
++++ b/kernel/sysctl.c
+@@ -126,6 +126,7 @@ static int __maybe_unused one = 1;
+ static int __maybe_unused two = 2;
+ static int __maybe_unused four = 4;
+ static unsigned long one_ul = 1;
++static unsigned long long_max = LONG_MAX;
+ static int one_hundred = 100;
+ static int one_thousand = 1000;
+ #ifdef CONFIG_PRINTK
+@@ -1695,6 +1696,8 @@ static struct ctl_table fs_table[] = {
+ .maxlen = sizeof(files_stat.max_files),
+ .mode = 0644,
+ .proc_handler = proc_doulongvec_minmax,
++ .extra1 = &zero,
++ .extra2 = &long_max,
+ },
+ {
+ .procname = "nr_open",
+--
+2.19.1
+
--- /dev/null
+From 62c6d6ac1f3bb1ecabdd04f778be62d8912c4f9f Mon Sep 17 00:00:00 2001
+From: Tony Jones <tonyj@suse.de>
+Date: Wed, 27 Feb 2019 17:55:32 -0800
+Subject: tools lib traceevent: Fix buffer overflow in arg_eval
+
+[ Upstream commit 7c5b019e3a638a5a290b0ec020f6ca83d2ec2aaa ]
+
+Fix buffer overflow observed when running perf test.
+
+The overflow is when trying to evaluate "1ULL << (64 - 1)" which is
+resulting in -9223372036854775808 which overflows the 20 character
+buffer.
+
+If is possible this bug has been reported before but I still don't see
+any fix checked in:
+
+See: https://www.spinics.net/lists/linux-perf-users/msg07714.html
+
+Reported-by: Michael Sartain <mikesart@fastmail.com>
+Reported-by: Mathias Krause <minipli@googlemail.com>
+Signed-off-by: Tony Jones <tonyj@suse.de>
+Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
+Cc: Frederic Weisbecker <fweisbec@gmail.com>
+Fixes: f7d82350e597 ("tools/events: Add files to create libtraceevent.a")
+Link: http://lkml.kernel.org/r/20190228015532.8941-1-tonyj@suse.de
+Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ tools/lib/traceevent/event-parse.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
+index 75de355a63d6..10985d991ed2 100644
+--- a/tools/lib/traceevent/event-parse.c
++++ b/tools/lib/traceevent/event-parse.c
+@@ -2416,7 +2416,7 @@ static int arg_num_eval(struct print_arg *arg, long long *val)
+ static char *arg_eval (struct print_arg *arg)
+ {
+ long long val;
+- static char buf[20];
++ static char buf[24];
+
+ switch (arg->type) {
+ case PRINT_ATOM:
+--
+2.19.1
+
--- /dev/null
+From 7b44addab04c6be1ad8799a4d0ccefb9a53dfceb Mon Sep 17 00:00:00 2001
+From: Douglas Anderson <dianders@chromium.org>
+Date: Fri, 8 Mar 2019 11:32:04 -0800
+Subject: tracing: kdb: Fix ftdump to not sleep
+
+[ Upstream commit 31b265b3baaf55f209229888b7ffea523ddab366 ]
+
+As reported back in 2016-11 [1], the "ftdump" kdb command triggers a
+BUG for "sleeping function called from invalid context".
+
+kdb's "ftdump" command wants to call ring_buffer_read_prepare() in
+atomic context. A very simple solution for this is to add allocation
+flags to ring_buffer_read_prepare() so kdb can call it without
+triggering the allocation error. This patch does that.
+
+Note that in the original email thread about this, it was suggested
+that perhaps the solution for kdb was to either preallocate the buffer
+ahead of time or create our own iterator. I'm hoping that this
+alternative of adding allocation flags to ring_buffer_read_prepare()
+can be considered since it means I don't need to duplicate more of the
+core trace code into "trace_kdb.c" (for either creating my own
+iterator or re-preparing a ring allocator whose memory was already
+allocated).
+
+NOTE: another option for kdb is to actually figure out how to make it
+reuse the existing ftrace_dump() function and totally eliminate the
+duplication. This sounds very appealing and actually works (the "sr
+z" command can be seen to properly dump the ftrace buffer). The
+downside here is that ftrace_dump() fully consumes the trace buffer.
+Unless that is changed I'd rather not use it because it means "ftdump
+| grep xyz" won't be very useful to search the ftrace buffer since it
+will throw away the whole trace on the first grep. A future patch to
+dump only the last few lines of the buffer will also be hard to
+implement.
+
+[1] https://lkml.kernel.org/r/20161117191605.GA21459@google.com
+
+Link: http://lkml.kernel.org/r/20190308193205.213659-1-dianders@chromium.org
+
+Reported-by: Brian Norris <briannorris@chromium.org>
+Signed-off-by: Douglas Anderson <dianders@chromium.org>
+Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ include/linux/ring_buffer.h | 2 +-
+ kernel/trace/ring_buffer.c | 5 +++--
+ kernel/trace/trace.c | 6 ++++--
+ kernel/trace/trace_kdb.c | 6 ++++--
+ 4 files changed, 12 insertions(+), 7 deletions(-)
+
+diff --git a/include/linux/ring_buffer.h b/include/linux/ring_buffer.h
+index 0940fda59872..941bfd9b3c89 100644
+--- a/include/linux/ring_buffer.h
++++ b/include/linux/ring_buffer.h
+@@ -128,7 +128,7 @@ ring_buffer_consume(struct ring_buffer *buffer, int cpu, u64 *ts,
+ unsigned long *lost_events);
+
+ struct ring_buffer_iter *
+-ring_buffer_read_prepare(struct ring_buffer *buffer, int cpu);
++ring_buffer_read_prepare(struct ring_buffer *buffer, int cpu, gfp_t flags);
+ void ring_buffer_read_prepare_sync(void);
+ void ring_buffer_read_start(struct ring_buffer_iter *iter);
+ void ring_buffer_read_finish(struct ring_buffer_iter *iter);
+diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
+index 65bd4616220d..34b4c32b0692 100644
+--- a/kernel/trace/ring_buffer.c
++++ b/kernel/trace/ring_buffer.c
+@@ -4141,6 +4141,7 @@ EXPORT_SYMBOL_GPL(ring_buffer_consume);
+ * ring_buffer_read_prepare - Prepare for a non consuming read of the buffer
+ * @buffer: The ring buffer to read from
+ * @cpu: The cpu buffer to iterate over
++ * @flags: gfp flags to use for memory allocation
+ *
+ * This performs the initial preparations necessary to iterate
+ * through the buffer. Memory is allocated, buffer recording
+@@ -4158,7 +4159,7 @@ EXPORT_SYMBOL_GPL(ring_buffer_consume);
+ * This overall must be paired with ring_buffer_read_finish.
+ */
+ struct ring_buffer_iter *
+-ring_buffer_read_prepare(struct ring_buffer *buffer, int cpu)
++ring_buffer_read_prepare(struct ring_buffer *buffer, int cpu, gfp_t flags)
+ {
+ struct ring_buffer_per_cpu *cpu_buffer;
+ struct ring_buffer_iter *iter;
+@@ -4166,7 +4167,7 @@ ring_buffer_read_prepare(struct ring_buffer *buffer, int cpu)
+ if (!cpumask_test_cpu(cpu, buffer->cpumask))
+ return NULL;
+
+- iter = kmalloc(sizeof(*iter), GFP_KERNEL);
++ iter = kmalloc(sizeof(*iter), flags);
+ if (!iter)
+ return NULL;
+
+diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
+index 1f96b292df31..c65cea71d1ee 100644
+--- a/kernel/trace/trace.c
++++ b/kernel/trace/trace.c
+@@ -3903,7 +3903,8 @@ __tracing_open(struct inode *inode, struct file *file, bool snapshot)
+ if (iter->cpu_file == RING_BUFFER_ALL_CPUS) {
+ for_each_tracing_cpu(cpu) {
+ iter->buffer_iter[cpu] =
+- ring_buffer_read_prepare(iter->trace_buffer->buffer, cpu);
++ ring_buffer_read_prepare(iter->trace_buffer->buffer,
++ cpu, GFP_KERNEL);
+ }
+ ring_buffer_read_prepare_sync();
+ for_each_tracing_cpu(cpu) {
+@@ -3913,7 +3914,8 @@ __tracing_open(struct inode *inode, struct file *file, bool snapshot)
+ } else {
+ cpu = iter->cpu_file;
+ iter->buffer_iter[cpu] =
+- ring_buffer_read_prepare(iter->trace_buffer->buffer, cpu);
++ ring_buffer_read_prepare(iter->trace_buffer->buffer,
++ cpu, GFP_KERNEL);
+ ring_buffer_read_prepare_sync();
+ ring_buffer_read_start(iter->buffer_iter[cpu]);
+ tracing_iter_reset(iter, cpu);
+diff --git a/kernel/trace/trace_kdb.c b/kernel/trace/trace_kdb.c
+index d953c163a079..810d78a8d14c 100644
+--- a/kernel/trace/trace_kdb.c
++++ b/kernel/trace/trace_kdb.c
+@@ -51,14 +51,16 @@ static void ftrace_dump_buf(int skip_lines, long cpu_file)
+ if (cpu_file == RING_BUFFER_ALL_CPUS) {
+ for_each_tracing_cpu(cpu) {
+ iter.buffer_iter[cpu] =
+- ring_buffer_read_prepare(iter.trace_buffer->buffer, cpu);
++ ring_buffer_read_prepare(iter.trace_buffer->buffer,
++ cpu, GFP_ATOMIC);
+ ring_buffer_read_start(iter.buffer_iter[cpu]);
+ tracing_iter_reset(&iter, cpu);
+ }
+ } else {
+ iter.cpu_file = cpu_file;
+ iter.buffer_iter[cpu_file] =
+- ring_buffer_read_prepare(iter.trace_buffer->buffer, cpu_file);
++ ring_buffer_read_prepare(iter.trace_buffer->buffer,
++ cpu_file, GFP_ATOMIC);
+ ring_buffer_read_start(iter.buffer_iter[cpu_file]);
+ tracing_iter_reset(&iter, cpu_file);
+ }
+--
+2.19.1
+
--- /dev/null
+From 36ebe625e05239c105f8c3d6f0c00305314e41a2 Mon Sep 17 00:00:00 2001
+From: Manfred Schlaegl <manfred.schlaegl@ginzinger.com>
+Date: Mon, 28 Jan 2019 19:01:10 +0100
+Subject: tty: increase the default flip buffer limit to 2*640K
+
+[ Upstream commit 7ab57b76ebf632bf2231ccabe26bea33868118c6 ]
+
+We increase the default limit for buffer memory allocation by a factor of
+10 to 640K to prevent data loss when using fast serial interfaces.
+
+For example when using RS485 without flow-control at speeds of 1Mbit/s
+an upwards we've run into problems such as applications being too slow
+to read out this buffer (on embedded devices based on imx53 or imx6).
+
+If you want to write transmitted data to a slow SD card and thus have
+realtime requirements, this limit can become a problem.
+
+That shouldn't be the case and 640K buffers fix such problems for us.
+
+This value is a maximum limit for allocation only. It has no effect
+on systems that currently run fine. When transmission is slow enough
+applications and hardware can keep up and increasing this limit
+doesn't change anything.
+
+It only _allows_ to allocate more than 2*64K in cases we currently fail to
+allocate memory despite having some.
+
+Signed-off-by: Manfred Schlaegl <manfred.schlaegl@ginzinger.com>
+Signed-off-by: Martin Kepplinger <martin.kepplinger@ginzinger.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/tty/tty_buffer.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
+index ae3ce330200e..ee3aa57bc0e7 100644
+--- a/drivers/tty/tty_buffer.c
++++ b/drivers/tty/tty_buffer.c
+@@ -26,7 +26,7 @@
+ * Byte threshold to limit memory consumption for flip buffers.
+ * The actual memory limit is > 2x this amount.
+ */
+-#define TTYB_DEFAULT_MEM_LIMIT 65536
++#define TTYB_DEFAULT_MEM_LIMIT (640 * 1024UL)
+
+ /*
+ * We default to dicing tty buffer allocations to this many characters
+--
+2.19.1
+
--- /dev/null
+From e412980f55225885724a3f3a107e8f48e3ba4bd1 Mon Sep 17 00:00:00 2001
+From: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+Date: Wed, 27 Feb 2019 06:51:36 +0000
+Subject: usb: chipidea: Grab the (legacy) USB PHY by phandle first
+
+[ Upstream commit 68ef236274793066b9ba3154b16c0acc1c891e5c ]
+
+According to the chipidea driver bindings, the USB PHY is specified via
+the "phys" phandle node. However, this only takes effect for USB PHYs
+that use the common PHY framework. For legacy USB PHYs, a simple lookup
+based on the USB PHY type is done instead.
+
+This does not play out well when more than one USB PHY is registered,
+since the first registered PHY matching the type will always be
+returned regardless of what the driver was bound to.
+
+Fix this by looking up the PHY based on the "phys" phandle node.
+Although generic PHYs are rather matched by their "phys-name" and not
+the "phys" phandle directly, there is no helper for similar lookup on
+legacy PHYs and it's probably not worth the effort to add it.
+
+When no legacy USB PHY is found by phandle, fallback to grabbing any
+registered USB2 PHY. This ensures backward compatibility if some users
+were actually relying on this mechanism.
+
+Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
+Signed-off-by: Peter Chen <peter.chen@nxp.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/usb/chipidea/core.c | 9 ++++++++-
+ 1 file changed, 8 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
+index 85fc6db48e44..159b897c5e80 100644
+--- a/drivers/usb/chipidea/core.c
++++ b/drivers/usb/chipidea/core.c
+@@ -935,8 +935,15 @@ static int ci_hdrc_probe(struct platform_device *pdev)
+ } else if (ci->platdata->usb_phy) {
+ ci->usb_phy = ci->platdata->usb_phy;
+ } else {
++ ci->usb_phy = devm_usb_get_phy_by_phandle(dev->parent, "phys",
++ 0);
+ ci->phy = devm_phy_get(dev->parent, "usb-phy");
+- ci->usb_phy = devm_usb_get_phy(dev->parent, USB_PHY_TYPE_USB2);
++
++ /* Fallback to grabbing any registered USB2 PHY */
++ if (IS_ERR(ci->usb_phy) &&
++ PTR_ERR(ci->usb_phy) != -EPROBE_DEFER)
++ ci->usb_phy = devm_usb_get_phy(dev->parent,
++ USB_PHY_TYPE_USB2);
+
+ /* if both generic PHY and USB PHY layers aren't enabled */
+ if (PTR_ERR(ci->phy) == -ENOSYS &&
+--
+2.19.1
+
--- /dev/null
+From 11f974ffcaed80cd1e8955c4aebdbd8e267ad4ef Mon Sep 17 00:00:00 2001
+From: Roger Quadros <rogerq@ti.com>
+Date: Thu, 10 Jan 2019 17:04:28 +0200
+Subject: usb: dwc3: gadget: Fix OTG events when gadget driver isn't loaded
+
+[ Upstream commit 169e3b68cadb5775daca009ced4faf01ffd97dcf ]
+
+On v3.10a in dual-role mode, if port is in device mode
+and gadget driver isn't loaded, the OTG event interrupts don't
+come through.
+
+It seems that if the core is configured to be OTG2.0 only,
+then we can't leave the DCFG.DEVSPD at Super-speed (default)
+if we expect OTG to work properly. It must be set to High-speed.
+
+Fix this issue by configuring DCFG.DEVSPD to the supported
+maximum speed at gadget init. Device tree still needs to provide
+correct supported maximum speed for this to work.
+
+This issue wasn't present on v2.40a but is seen on v3.10a.
+It doesn't cause any side effects on v2.40a.
+
+Signed-off-by: Roger Quadros <rogerq@ti.com>
+Signed-off-by: Sekhar Nori <nsekhar@ti.com>
+Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/usb/dwc3/gadget.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
+index 700fb626ad03..524104eed8a7 100644
+--- a/drivers/usb/dwc3/gadget.c
++++ b/drivers/usb/dwc3/gadget.c
+@@ -3233,6 +3233,8 @@ int dwc3_gadget_init(struct dwc3 *dwc)
+ goto err4;
+ }
+
++ dwc3_gadget_set_speed(&dwc->gadget, dwc->maximum_speed);
++
+ return 0;
+
+ err4:
+--
+2.19.1
+
--- /dev/null
+From a0e6338ca5b06b45492d12bae2658134e8dee39e Mon Sep 17 00:00:00 2001
+From: John Stultz <john.stultz@linaro.org>
+Date: Tue, 5 Feb 2019 10:24:40 -0800
+Subject: usb: f_fs: Avoid crash due to out-of-scope stack ptr access
+
+[ Upstream commit 54f64d5c983f939901dacc8cfc0983727c5c742e ]
+
+Since the 5.0 merge window opened, I've been seeing frequent
+crashes on suspend and reboot with the trace:
+
+[ 36.911170] Unable to handle kernel paging request at virtual address ffffff801153d660
+[ 36.912769] Unable to handle kernel paging request at virtual address ffffff800004b564
+...
+[ 36.950666] Call trace:
+[ 36.950670] queued_spin_lock_slowpath+0x1cc/0x2c8
+[ 36.950681] _raw_spin_lock_irqsave+0x64/0x78
+[ 36.950692] complete+0x28/0x70
+[ 36.950703] ffs_epfile_io_complete+0x3c/0x50
+[ 36.950713] usb_gadget_giveback_request+0x34/0x108
+[ 36.950721] dwc3_gadget_giveback+0x50/0x68
+[ 36.950723] dwc3_thread_interrupt+0x358/0x1488
+[ 36.950731] irq_thread_fn+0x30/0x88
+[ 36.950734] irq_thread+0x114/0x1b0
+[ 36.950739] kthread+0x104/0x130
+[ 36.950747] ret_from_fork+0x10/0x1c
+
+I isolated this down to in ffs_epfile_io():
+https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/usb/gadget/function/f_fs.c#n1065
+
+Where the completion done is setup on the stack:
+ DECLARE_COMPLETION_ONSTACK(done);
+
+Then later we setup a request and queue it, and wait for it:
+ if (unlikely(wait_for_completion_interruptible(&done))) {
+ /*
+ * To avoid race condition with ffs_epfile_io_complete,
+ * dequeue the request first then check
+ * status. usb_ep_dequeue API should guarantee no race
+ * condition with req->complete callback.
+ */
+ usb_ep_dequeue(ep->ep, req);
+ interrupted = ep->status < 0;
+ }
+
+The problem is, that we end up being interrupted, dequeue the
+request, and exit.
+
+But then the irq triggers and we try calling complete() on the
+context pointer which points to now random stack space, which
+results in the panic.
+
+Alan Stern pointed out there is a bug here, in that the snippet
+above "assumes that usb_ep_dequeue() waits until the request has
+been completed." And that:
+
+ wait_for_completion(&done);
+
+Is needed right after the usb_ep_dequeue().
+
+Thus this patch implements that change. With it I no longer see
+the crashes on suspend or reboot.
+
+This issue seems to have been uncovered by behavioral changes in
+the dwc3 driver in commit fec9095bdef4e ("usb: dwc3: gadget:
+remove wait_end_transfer").
+
+Cc: Alan Stern <stern@rowland.harvard.edu>
+Cc: Felipe Balbi <balbi@kernel.org>
+Cc: Zeng Tao <prime.zeng@hisilicon.com>
+Cc: Jack Pham <jackp@codeaurora.org>
+Cc: Thinh Nguyen <thinh.nguyen@synopsys.com>
+Cc: Chen Yu <chenyu56@huawei.com>
+Cc: Jerry Zhang <zhangjerry@google.com>
+Cc: Lars-Peter Clausen <lars@metafoo.de>
+Cc: Vincent Pelletier <plr.vincent@gmail.com>
+Cc: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
+Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Cc: Linux USB List <linux-usb@vger.kernel.org>
+Suggested-by: Alan Stern <stern@rowland.harvard.edu>
+Signed-off-by: John Stultz <john.stultz@linaro.org>
+Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/usb/gadget/function/f_fs.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
+index 31e8bf3578c8..aa15593a3ac4 100644
+--- a/drivers/usb/gadget/function/f_fs.c
++++ b/drivers/usb/gadget/function/f_fs.c
+@@ -1008,6 +1008,7 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data)
+ * condition with req->complete callback.
+ */
+ usb_ep_dequeue(ep->ep, req);
++ wait_for_completion(&done);
+ interrupted = ep->status < 0;
+ }
+
+--
+2.19.1
+
--- /dev/null
+From bf9901d0c75ae562dcbbfebe290160e89f48d3c6 Mon Sep 17 00:00:00 2001
+From: Aurelien Jarno <aurelien@aurel32.net>
+Date: Thu, 6 Dec 2018 20:05:34 +0100
+Subject: vfs: fix preadv64v2 and pwritev64v2 compat syscalls with offset == -1
+
+[ Upstream commit cc4b1242d7e3b42eed73881fc749944146493e4f ]
+
+The preadv2 and pwritev2 syscalls are supposed to emulate the readv and
+writev syscalls when offset == -1. Therefore the compat code should
+check for offset before calling do_compat_preadv64 and
+do_compat_pwritev64. This is the case for the preadv2 and pwritev2
+syscalls, but handling of offset == -1 is missing in their 64-bit
+equivalent.
+
+This patch fixes that, calling do_compat_readv and do_compat_writev when
+offset == -1. This fixes the following glibc tests on x32:
+ - misc/tst-preadvwritev2
+ - misc/tst-preadvwritev64v2
+
+Cc: Alexander Viro <viro@zeniv.linux.org.uk>
+Cc: H.J. Lu <hjl.tools@gmail.com>
+Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
+Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ fs/read_write.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/fs/read_write.c b/fs/read_write.c
+index 8a2737f0d61d..562974a0616c 100644
+--- a/fs/read_write.c
++++ b/fs/read_write.c
+@@ -1241,6 +1241,9 @@ COMPAT_SYSCALL_DEFINE5(preadv64v2, unsigned long, fd,
+ const struct compat_iovec __user *,vec,
+ unsigned long, vlen, loff_t, pos, rwf_t, flags)
+ {
++ if (pos == -1)
++ return do_compat_readv(fd, vec, vlen, flags);
++
+ return do_compat_preadv64(fd, vec, vlen, pos, flags);
+ }
+ #endif
+@@ -1347,6 +1350,9 @@ COMPAT_SYSCALL_DEFINE5(pwritev64v2, unsigned long, fd,
+ const struct compat_iovec __user *,vec,
+ unsigned long, vlen, loff_t, pos, rwf_t, flags)
+ {
++ if (pos == -1)
++ return do_compat_writev(fd, vec, vlen, flags);
++
+ return do_compat_pwritev64(fd, vec, vlen, pos, flags);
+ }
+ #endif
+--
+2.19.1
+
--- /dev/null
+From 077ecd4bad3d93263c191102e7ab799d84cd9b7d Mon Sep 17 00:00:00 2001
+From: Alexei Avshalom Lazar <ailizaro@codeaurora.org>
+Date: Fri, 22 Feb 2019 16:21:05 +0200
+Subject: wil6210: check null pointer in _wil_cfg80211_merge_extra_ies
+
+[ Upstream commit de77a53c2d1e8fb3621e63e8e1f0f0c9a1a99ff7 ]
+
+ies1 or ies2 might be null when code inside
+_wil_cfg80211_merge_extra_ies access them.
+Add explicit check for null and make sure ies1/ies2 are not
+accessed in such a case.
+
+spos might be null and be accessed inside
+_wil_cfg80211_merge_extra_ies.
+Add explicit check for null in the while condition statement
+and make sure spos is not accessed in such a case.
+
+Signed-off-by: Alexei Avshalom Lazar <ailizaro@codeaurora.org>
+Signed-off-by: Maya Erez <merez@codeaurora.org>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/wireless/ath/wil6210/cfg80211.c | 14 +++++++++++---
+ 1 file changed, 11 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/net/wireless/ath/wil6210/cfg80211.c b/drivers/net/wireless/ath/wil6210/cfg80211.c
+index f79c337105cb..2daf33342b23 100644
+--- a/drivers/net/wireless/ath/wil6210/cfg80211.c
++++ b/drivers/net/wireless/ath/wil6210/cfg80211.c
+@@ -1420,6 +1420,12 @@ static int _wil_cfg80211_merge_extra_ies(const u8 *ies1, u16 ies1_len,
+ u8 *buf, *dpos;
+ const u8 *spos;
+
++ if (!ies1)
++ ies1_len = 0;
++
++ if (!ies2)
++ ies2_len = 0;
++
+ if (ies1_len == 0 && ies2_len == 0) {
+ *merged_ies = NULL;
+ *merged_len = 0;
+@@ -1429,17 +1435,19 @@ static int _wil_cfg80211_merge_extra_ies(const u8 *ies1, u16 ies1_len,
+ buf = kmalloc(ies1_len + ies2_len, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+- memcpy(buf, ies1, ies1_len);
++ if (ies1)
++ memcpy(buf, ies1, ies1_len);
+ dpos = buf + ies1_len;
+ spos = ies2;
+- while (spos + 1 < ies2 + ies2_len) {
++ while (spos && (spos + 1 < ies2 + ies2_len)) {
+ /* IE tag at offset 0, length at offset 1 */
+ u16 ielen = 2 + spos[1];
+
+ if (spos + ielen > ies2 + ies2_len)
+ break;
+ if (spos[0] == WLAN_EID_VENDOR_SPECIFIC &&
+- !_wil_cfg80211_find_ie(ies1, ies1_len, spos, ielen)) {
++ (!ies1 || !_wil_cfg80211_find_ie(ies1, ies1_len,
++ spos, ielen))) {
+ memcpy(dpos, spos, ielen);
+ dpos += ielen;
+ }
+--
+2.19.1
+
--- /dev/null
+From 18cc81733de937fae0ede27cd8d50220e7eb33ec Mon Sep 17 00:00:00 2001
+From: Zumeng Chen <zumeng.chen@gmail.com>
+Date: Wed, 19 Dec 2018 15:50:29 +0800
+Subject: wlcore: Fix memory leak in case wl12xx_fetch_firmware failure
+
+[ Upstream commit ba2ffc96321c8433606ceeb85c9e722b8113e5a7 ]
+
+Release fw_status, raw_fw_status, and tx_res_if when wl12xx_fetch_firmware
+failed instead of meaningless goto out to avoid the following memory leak
+reports(Only the last one listed):
+
+unreferenced object 0xc28a9a00 (size 512):
+ comm "kworker/0:4", pid 31298, jiffies 2783204 (age 203.290s)
+ hex dump (first 32 bytes):
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
+ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
+ backtrace:
+ [<6624adab>] kmemleak_alloc+0x40/0x74
+ [<500ddb31>] kmem_cache_alloc_trace+0x1ac/0x270
+ [<db4d731d>] wl12xx_chip_wakeup+0xc4/0x1fc [wlcore]
+ [<76c5db53>] wl1271_op_add_interface+0x4a4/0x8f4 [wlcore]
+ [<cbf30777>] drv_add_interface+0xa4/0x1a0 [mac80211]
+ [<65bac325>] ieee80211_reconfig+0x9c0/0x1644 [mac80211]
+ [<2817c80e>] ieee80211_restart_work+0x90/0xc8 [mac80211]
+ [<7e1d425a>] process_one_work+0x284/0x42c
+ [<55f9432e>] worker_thread+0x2fc/0x48c
+ [<abb582c6>] kthread+0x148/0x160
+ [<63144b13>] ret_from_fork+0x14/0x2c
+ [< (null)>] (null)
+ [<1f6e7715>] 0xffffffff
+
+Signed-off-by: Zumeng Chen <zumeng.chen@gmail.com>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/wireless/ti/wlcore/main.c | 7 +++++--
+ 1 file changed, 5 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
+index 19e3c5a0b715..2ca5658bbc2a 100644
+--- a/drivers/net/wireless/ti/wlcore/main.c
++++ b/drivers/net/wireless/ti/wlcore/main.c
+@@ -1084,8 +1084,11 @@ static int wl12xx_chip_wakeup(struct wl1271 *wl, bool plt)
+ goto out;
+
+ ret = wl12xx_fetch_firmware(wl, plt);
+- if (ret < 0)
+- goto out;
++ if (ret < 0) {
++ kfree(wl->fw_status);
++ kfree(wl->raw_fw_status);
++ kfree(wl->tx_res_if);
++ }
+
+ out:
+ return ret;
+--
+2.19.1
+
--- /dev/null
+From 865c5f0c601ff568994c3eae6116e8dd871833c5 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafael=20=C3=81vila=20de=20Esp=C3=ADndola?=
+ <rafael@espindo.la>
+Date: Wed, 19 Dec 2018 11:01:43 -0800
+Subject: x86/build: Mark per-CPU symbols as absolute explicitly for LLD
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+[ Upstream commit d071ae09a4a1414c1433d5ae9908959a7325b0ad ]
+
+Accessing per-CPU variables is done by finding the offset of the
+variable in the per-CPU block and adding it to the address of the
+respective CPU's block.
+
+Section 3.10.8 of ld.bfd's documentation states:
+
+ For expressions involving numbers, relative addresses and absolute
+ addresses, ld follows these rules to evaluate terms:
+
+ Other binary operations, that is, between two relative addresses
+ not in the same section, or between a relative address and an
+ absolute address, first convert any non-absolute term to an
+ absolute address before applying the operator."
+
+Note that LLVM's linker does not adhere to the GNU ld's implementation
+and as such requires implicitly-absolute terms to be explicitly marked
+as absolute in the linker script. If not, it fails currently with:
+
+ ld.lld: error: ./arch/x86/kernel/vmlinux.lds:153: at least one side of the expression must be absolute
+ ld.lld: error: ./arch/x86/kernel/vmlinux.lds:154: at least one side of the expression must be absolute
+ Makefile:1040: recipe for target 'vmlinux' failed
+
+This is not a functional change for ld.bfd which converts the term to an
+absolute symbol anyways as specified above.
+
+Based on a previous submission by Tri Vo <trong@android.com>.
+
+Reported-by: Dmitry Golovin <dima@golovin.in>
+Signed-off-by: Rafael Ávila de Espíndola <rafael@espindo.la>
+[ Update commit message per Boris' and Michael's suggestions. ]
+Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
+[ Massage commit message more, fix typos. ]
+Signed-off-by: Borislav Petkov <bp@suse.de>
+Tested-by: Dmitry Golovin <dima@golovin.in>
+Cc: "H. Peter Anvin" <hpa@zytor.com>
+Cc: Andy Lutomirski <luto@kernel.org>
+Cc: Brijesh Singh <brijesh.singh@amd.com>
+Cc: Cao Jin <caoj.fnst@cn.fujitsu.com>
+Cc: Ingo Molnar <mingo@redhat.com>
+Cc: Joerg Roedel <jroedel@suse.de>
+Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
+Cc: Masami Hiramatsu <mhiramat@kernel.org>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Cc: Tri Vo <trong@android.com>
+Cc: dima@golovin.in
+Cc: morbo@google.com
+Cc: x86-ml <x86@kernel.org>
+Link: https://lkml.kernel.org/r/20181219190145.252035-1-ndesaulniers@google.com
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ arch/x86/kernel/vmlinux.lds.S | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
+index 5dd3317d761f..c63bab98780c 100644
+--- a/arch/x86/kernel/vmlinux.lds.S
++++ b/arch/x86/kernel/vmlinux.lds.S
+@@ -411,7 +411,7 @@ SECTIONS
+ * Per-cpu symbols which need to be offset from __per_cpu_load
+ * for the boot processor.
+ */
+-#define INIT_PER_CPU(x) init_per_cpu__##x = x + __per_cpu_load
++#define INIT_PER_CPU(x) init_per_cpu__##x = ABSOLUTE(x) + __per_cpu_load
+ INIT_PER_CPU(gdt_page);
+ INIT_PER_CPU(irq_stack_union);
+
+--
+2.19.1
+
--- /dev/null
+From a1d59c78c333fb83b2a3089a35fa518a5d9dd24e Mon Sep 17 00:00:00 2001
+From: George Rimar <grimar@accesssoftek.com>
+Date: Fri, 11 Jan 2019 12:10:12 -0800
+Subject: x86/build: Specify elf_i386 linker emulation explicitly for i386
+ objects
+
+[ Upstream commit 927185c124d62a9a4d35878d7f6d432a166b74e3 ]
+
+The kernel uses the OUTPUT_FORMAT linker script command in it's linker
+scripts. Most of the time, the -m option is passed to the linker with
+correct architecture, but sometimes (at least for x86_64) the -m option
+contradicts the OUTPUT_FORMAT directive.
+
+Specifically, arch/x86/boot and arch/x86/realmode/rm produce i386 object
+files, but are linked with the -m elf_x86_64 linker flag when building
+for x86_64.
+
+The GNU linker manpage doesn't explicitly state any tie-breakers between
+-m and OUTPUT_FORMAT. But with BFD and Gold linkers, OUTPUT_FORMAT
+overrides the emulation value specified with the -m option.
+
+LLVM lld has a different behavior, however. When supplied with
+contradicting -m and OUTPUT_FORMAT values it fails with the following
+error message:
+
+ ld.lld: error: arch/x86/realmode/rm/header.o is incompatible with elf_x86_64
+
+Therefore, just add the correct -m after the incorrect one (it overrides
+it), so the linker invocation looks like this:
+
+ ld -m elf_x86_64 -z max-page-size=0x200000 -m elf_i386 --emit-relocs -T \
+ realmode.lds header.o trampoline_64.o stack.o reboot.o -o realmode.elf
+
+This is not a functional change for GNU ld, because (although not
+explicitly documented) OUTPUT_FORMAT overrides -m EMULATION.
+
+Tested by building x86_64 kernel with GNU gcc/ld toolchain and booting
+it in QEMU.
+
+ [ bp: massage and clarify text. ]
+
+Suggested-by: Dmitry Golovin <dima@golovin.in>
+Signed-off-by: George Rimar <grimar@accesssoftek.com>
+Signed-off-by: Tri Vo <trong@android.com>
+Signed-off-by: Borislav Petkov <bp@suse.de>
+Tested-by: Tri Vo <trong@android.com>
+Tested-by: Nick Desaulniers <ndesaulniers@google.com>
+Cc: "H. Peter Anvin" <hpa@zytor.com>
+Cc: Ingo Molnar <mingo@redhat.com>
+Cc: Michael Matz <matz@suse.de>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Cc: morbo@google.com
+Cc: ndesaulniers@google.com
+Cc: ruiu@google.com
+Cc: x86-ml <x86@kernel.org>
+Link: https://lkml.kernel.org/r/20190111201012.71210-1-trong@android.com
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ arch/x86/boot/Makefile | 2 +-
+ arch/x86/realmode/rm/Makefile | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile
+index 9b5adae9cc40..e2839b5c246c 100644
+--- a/arch/x86/boot/Makefile
++++ b/arch/x86/boot/Makefile
+@@ -100,7 +100,7 @@ $(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE
+ AFLAGS_header.o += -I$(objtree)/$(obj)
+ $(obj)/header.o: $(obj)/zoffset.h
+
+-LDFLAGS_setup.elf := -T
++LDFLAGS_setup.elf := -m elf_i386 -T
+ $(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
+ $(call if_changed,ld)
+
+diff --git a/arch/x86/realmode/rm/Makefile b/arch/x86/realmode/rm/Makefile
+index 4463fa72db94..96cb20de08af 100644
+--- a/arch/x86/realmode/rm/Makefile
++++ b/arch/x86/realmode/rm/Makefile
+@@ -47,7 +47,7 @@ $(obj)/pasyms.h: $(REALMODE_OBJS) FORCE
+ targets += realmode.lds
+ $(obj)/realmode.lds: $(obj)/pasyms.h
+
+-LDFLAGS_realmode.elf := --emit-relocs -T
++LDFLAGS_realmode.elf := -m elf_i386 --emit-relocs -T
+ CPPFLAGS_realmode.lds += -P -C -I$(objtree)/$(obj)
+
+ targets += realmode.elf
+--
+2.19.1
+
--- /dev/null
+From 5b5bd1d46974954174269ed797cef7a14d56aa71 Mon Sep 17 00:00:00 2001
+From: Kairui Song <kasong@redhat.com>
+Date: Wed, 6 Mar 2019 19:18:27 +0800
+Subject: x86/hyperv: Fix kernel panic when kexec on HyperV
+
+[ Upstream commit 179fb36abb097976997f50733d5b122a29158cba ]
+
+After commit 68bb7bfb7985 ("X86/Hyper-V: Enable IPI enlightenments"),
+kexec fails with a kernel panic:
+
+kexec_core: Starting new kernel
+BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
+Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v3.0 03/02/2018
+RIP: 0010:0xffffc9000001d000
+
+Call Trace:
+ ? __send_ipi_mask+0x1c6/0x2d0
+ ? hv_send_ipi_mask_allbutself+0x6d/0xb0
+ ? mp_save_irq+0x70/0x70
+ ? __ioapic_read_entry+0x32/0x50
+ ? ioapic_read_entry+0x39/0x50
+ ? clear_IO_APIC_pin+0xb8/0x110
+ ? native_stop_other_cpus+0x6e/0x170
+ ? native_machine_shutdown+0x22/0x40
+ ? kernel_kexec+0x136/0x156
+
+That happens if hypercall based IPIs are used because the hypercall page is
+reset very early upon kexec reboot, but kexec sends IPIs to stop CPUs,
+which invokes the hypercall and dereferences the unusable page.
+
+To fix his, reset hv_hypercall_pg to NULL before the page is reset to avoid
+any misuse, IPI sending will fall back to the non hypercall based
+method. This only happens on kexec / kdump so just setting the pointer to
+NULL is good enough.
+
+Fixes: 68bb7bfb7985 ("X86/Hyper-V: Enable IPI enlightenments")
+Signed-off-by: Kairui Song <kasong@redhat.com>
+Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
+Cc: "K. Y. Srinivasan" <kys@microsoft.com>
+Cc: Haiyang Zhang <haiyangz@microsoft.com>
+Cc: Stephen Hemminger <sthemmin@microsoft.com>
+Cc: Sasha Levin <sashal@kernel.org>
+Cc: Borislav Petkov <bp@alien8.de>
+Cc: "H. Peter Anvin" <hpa@zytor.com>
+Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
+Cc: Dave Young <dyoung@redhat.com>
+Cc: devel@linuxdriverproject.org
+Link: https://lkml.kernel.org/r/20190306111827.14131-1-kasong@redhat.com
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ arch/x86/hyperv/hv_init.c | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c
+index 20c876c7c5bf..87abd5145cc9 100644
+--- a/arch/x86/hyperv/hv_init.c
++++ b/arch/x86/hyperv/hv_init.c
+@@ -387,6 +387,13 @@ void hyperv_cleanup(void)
+ /* Reset our OS id */
+ wrmsrl(HV_X64_MSR_GUEST_OS_ID, 0);
+
++ /*
++ * Reset hypercall page reference before reset the page,
++ * let hypercall operations fail safely rather than
++ * panic the kernel for using invalid hypercall page
++ */
++ hv_hypercall_pg = NULL;
++
+ /* Reset the hypercall page */
+ hypercall_msr.as_uint64 = 0;
+ wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);
+--
+2.19.1
+
--- /dev/null
+From 0d017faeb25b5fae49ea89459c85dbb7ca40abfc Mon Sep 17 00:00:00 2001
+From: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
+Date: Thu, 14 Feb 2019 16:23:20 +0200
+Subject: xen/gntdev: Do not destroy context while dma-bufs are in use
+
+[ Upstream commit fa13e665e02874c0a5f4d06d6967ae34a6cb3d6a ]
+
+If there are exported DMA buffers which are still in use and
+grant device is closed by either normal user-space close or by
+a signal this leads to the grant device context to be destroyed,
+thus making it not possible to correctly destroy those exported
+buffers when they are returned back to gntdev and makes the module
+crash:
+
+[ 339.617540] [<ffff00000854c0d8>] dmabuf_exp_ops_release+0x40/0xa8
+[ 339.617560] [<ffff00000867a6e8>] dma_buf_release+0x60/0x190
+[ 339.617577] [<ffff0000082211f0>] __fput+0x88/0x1d0
+[ 339.617589] [<ffff000008221394>] ____fput+0xc/0x18
+[ 339.617607] [<ffff0000080ed4e4>] task_work_run+0x9c/0xc0
+[ 339.617622] [<ffff000008089714>] do_notify_resume+0xfc/0x108
+
+Fix this by referencing gntdev on each DMA buffer export and
+unreferencing on buffer release.
+
+Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
+Reviewed-by: Boris Ostrovsky@oracle.com>
+Signed-off-by: Juergen Gross <jgross@suse.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/xen/gntdev-dmabuf.c | 12 +++++++++++-
+ drivers/xen/gntdev-dmabuf.h | 2 +-
+ drivers/xen/gntdev.c | 2 +-
+ 3 files changed, 13 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/xen/gntdev-dmabuf.c b/drivers/xen/gntdev-dmabuf.c
+index cba6b586bfbd..d97fcfc5e558 100644
+--- a/drivers/xen/gntdev-dmabuf.c
++++ b/drivers/xen/gntdev-dmabuf.c
+@@ -80,6 +80,12 @@ struct gntdev_dmabuf_priv {
+ struct list_head imp_list;
+ /* This is the lock which protects dma_buf_xxx lists. */
+ struct mutex lock;
++ /*
++ * We reference this file while exporting dma-bufs, so
++ * the grant device context is not destroyed while there are
++ * external users alive.
++ */
++ struct file *filp;
+ };
+
+ /* DMA buffer export support. */
+@@ -311,6 +317,7 @@ static void dmabuf_exp_release(struct kref *kref)
+
+ dmabuf_exp_wait_obj_signal(gntdev_dmabuf->priv, gntdev_dmabuf);
+ list_del(&gntdev_dmabuf->next);
++ fput(gntdev_dmabuf->priv->filp);
+ kfree(gntdev_dmabuf);
+ }
+
+@@ -423,6 +430,7 @@ static int dmabuf_exp_from_pages(struct gntdev_dmabuf_export_args *args)
+ mutex_lock(&args->dmabuf_priv->lock);
+ list_add(&gntdev_dmabuf->next, &args->dmabuf_priv->exp_list);
+ mutex_unlock(&args->dmabuf_priv->lock);
++ get_file(gntdev_dmabuf->priv->filp);
+ return 0;
+
+ fail:
+@@ -834,7 +842,7 @@ long gntdev_ioctl_dmabuf_imp_release(struct gntdev_priv *priv,
+ return dmabuf_imp_release(priv->dmabuf_priv, op.fd);
+ }
+
+-struct gntdev_dmabuf_priv *gntdev_dmabuf_init(void)
++struct gntdev_dmabuf_priv *gntdev_dmabuf_init(struct file *filp)
+ {
+ struct gntdev_dmabuf_priv *priv;
+
+@@ -847,6 +855,8 @@ struct gntdev_dmabuf_priv *gntdev_dmabuf_init(void)
+ INIT_LIST_HEAD(&priv->exp_wait_list);
+ INIT_LIST_HEAD(&priv->imp_list);
+
++ priv->filp = filp;
++
+ return priv;
+ }
+
+diff --git a/drivers/xen/gntdev-dmabuf.h b/drivers/xen/gntdev-dmabuf.h
+index 7220a53d0fc5..3d9b9cf9d5a1 100644
+--- a/drivers/xen/gntdev-dmabuf.h
++++ b/drivers/xen/gntdev-dmabuf.h
+@@ -14,7 +14,7 @@
+ struct gntdev_dmabuf_priv;
+ struct gntdev_priv;
+
+-struct gntdev_dmabuf_priv *gntdev_dmabuf_init(void);
++struct gntdev_dmabuf_priv *gntdev_dmabuf_init(struct file *filp);
+
+ void gntdev_dmabuf_fini(struct gntdev_dmabuf_priv *priv);
+
+diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c
+index b0b02a501167..9d8e02cfd480 100644
+--- a/drivers/xen/gntdev.c
++++ b/drivers/xen/gntdev.c
+@@ -600,7 +600,7 @@ static int gntdev_open(struct inode *inode, struct file *flip)
+ mutex_init(&priv->lock);
+
+ #ifdef CONFIG_XEN_GNTDEV_DMABUF
+- priv->dmabuf_priv = gntdev_dmabuf_init();
++ priv->dmabuf_priv = gntdev_dmabuf_init(flip);
+ if (IS_ERR(priv->dmabuf_priv)) {
+ ret = PTR_ERR(priv->dmabuf_priv);
+ kfree(priv);
+--
+2.19.1
+
projects / thirdparty / kernel / stable-queue.git / commitdiff
