--- /dev/null
+From 236ebc20d9afc5e9ff52f3cf3f365a91583aac10 Mon Sep 17 00:00:00 2001
+From: Filipe Manana <fdmanana@suse.com>
+Date: Tue, 10 Mar 2020 12:13:53 +0000
+Subject: btrfs: fix log context list corruption after rename whiteout error
+
+From: Filipe Manana <fdmanana@suse.com>
+
+commit 236ebc20d9afc5e9ff52f3cf3f365a91583aac10 upstream.
+
+During a rename whiteout, if btrfs_whiteout_for_rename() returns an error
+we can end up returning from btrfs_rename() with the log context object
+still in the root's log context list - this happens if 'sync_log' was
+set to true before we called btrfs_whiteout_for_rename() and it is
+dangerous because we end up with a corrupt linked list (root->log_ctxs)
+as the log context object was allocated on the stack.
+
+After btrfs_rename() returns, any task that is running btrfs_sync_log()
+concurrently can end up crashing because that linked list is traversed by
+btrfs_sync_log() (through btrfs_remove_all_log_ctxs()). That results in
+the same issue that commit e6c617102c7e4 ("Btrfs: fix log context list
+corruption after rename exchange operation") fixed.
+
+Fixes: d4682ba03ef618 ("Btrfs: sync log after logging new name")
+CC: stable@vger.kernel.org # 4.19+
+Signed-off-by: Filipe Manana <fdmanana@suse.com>
+Signed-off-by: David Sterba <dsterba@suse.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ fs/btrfs/inode.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/fs/btrfs/inode.c
++++ b/fs/btrfs/inode.c
+@@ -10015,6 +10015,10 @@ out_fail:
+ ret = btrfs_sync_log(trans, BTRFS_I(old_inode)->root, &ctx);
+ if (ret)
+ commit_transaction = true;
++ } else if (sync_log) {
++ mutex_lock(&root->log_mutex);
++ list_del(&ctx.list);
++ mutex_unlock(&root->log_mutex);
+ }
+ if (commit_transaction) {
+ ret = btrfs_commit_transaction(trans);
--- /dev/null
+From 5bbc6604a62814511c32f2e39bc9ffb2c1b92cbe Mon Sep 17 00:00:00 2001
+From: Tom St Denis <tom.stdenis@amd.com>
+Date: Tue, 10 Mar 2020 08:40:41 -0400
+Subject: drm/amd/amdgpu: Fix GPR read from debugfs (v2)
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+From: Tom St Denis <tom.stdenis@amd.com>
+
+commit 5bbc6604a62814511c32f2e39bc9ffb2c1b92cbe upstream.
+
+The offset into the array was specified in bytes but should
+be in terms of 32-bit words. Also prevent large reads that
+would also cause a buffer overread.
+
+v2: Read from correct offset from internal storage buffer.
+
+Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
+Acked-by: Christian König <christian.koenig@amd.com>
+Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+Cc: stable@vger.kernel.org
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
++++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+@@ -694,11 +694,11 @@ static ssize_t amdgpu_debugfs_gpr_read(s
+ ssize_t result = 0;
+ uint32_t offset, se, sh, cu, wave, simd, thread, bank, *data;
+
+- if (size & 3 || *pos & 3)
++ if (size > 4096 || size & 3 || *pos & 3)
+ return -EINVAL;
+
+ /* decode offset */
+- offset = *pos & GENMASK_ULL(11, 0);
++ offset = (*pos & GENMASK_ULL(11, 0)) >> 2;
+ se = (*pos & GENMASK_ULL(19, 12)) >> 12;
+ sh = (*pos & GENMASK_ULL(27, 20)) >> 20;
+ cu = (*pos & GENMASK_ULL(35, 28)) >> 28;
+@@ -729,7 +729,7 @@ static ssize_t amdgpu_debugfs_gpr_read(s
+ while (size) {
+ uint32_t value;
+
+- value = data[offset++];
++ value = data[result >> 2];
+ r = put_user(value, (uint32_t *)buf);
+ if (r) {
+ result = r;
--- /dev/null
+From b216a8e7908cd750550c0480cf7d2b3a37f06954 Mon Sep 17 00:00:00 2001
+From: Qiujun Huang <hqjagain@gmail.com>
+Date: Wed, 18 Mar 2020 15:53:50 +0800
+Subject: drm/lease: fix WARNING in idr_destroy
+
+From: Qiujun Huang <hqjagain@gmail.com>
+
+commit b216a8e7908cd750550c0480cf7d2b3a37f06954 upstream.
+
+drm_lease_create takes ownership of leases. And leases will be released
+by drm_master_put.
+
+drm_master_put
+ ->drm_master_destroy
+ ->idr_destroy
+
+So we needn't call idr_destroy again.
+
+Reported-and-tested-by: syzbot+05835159fe322770fe3d@syzkaller.appspotmail.com
+Signed-off-by: Qiujun Huang <hqjagain@gmail.com>
+Cc: stable@vger.kernel.org
+Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
+Link: https://patchwork.freedesktop.org/patch/msgid/1584518030-4173-1-git-send-email-hqjagain@gmail.com
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/gpu/drm/drm_lease.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/drm_lease.c
++++ b/drivers/gpu/drm/drm_lease.c
+@@ -545,10 +545,12 @@ int drm_mode_create_lease_ioctl(struct d
+ }
+
+ DRM_DEBUG_LEASE("Creating lease\n");
++ /* lessee will take the ownership of leases */
+ lessee = drm_lease_create(lessor, &leases);
+
+ if (IS_ERR(lessee)) {
+ ret = PTR_ERR(lessee);
++ idr_destroy(&leases);
+ goto out_leases;
+ }
+
+@@ -583,7 +585,6 @@ out_lessee:
+
+ out_leases:
+ put_unused_fd(fd);
+- idr_destroy(&leases);
+
+ DRM_DEBUG_LEASE("drm_mode_create_lease_ioctl failed: %d\n", ret);
+ return ret;
--- /dev/null
+From a500f3bd787f8224341e44b238f318c407b10897 Mon Sep 17 00:00:00 2001
+From: Eugen Hristev <eugen.hristev@microchip.com>
+Date: Tue, 28 Jan 2020 12:57:39 +0000
+Subject: iio: adc: at91-sama5d2_adc: fix differential channels in triggered mode
+
+From: Eugen Hristev <eugen.hristev@microchip.com>
+
+commit a500f3bd787f8224341e44b238f318c407b10897 upstream.
+
+The differential channels require writing the channel offset register (COR).
+Otherwise they do not work in differential mode.
+The configuration of COR is missing in triggered mode.
+
+Fixes: 5e1a1da0f8c9 ("iio: adc: at91-sama5d2_adc: add hw trigger and buffer support")
+Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
+Cc: <Stable@vger.kernel.org>
+Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/iio/adc/at91-sama5d2_adc.c | 15 +++++++++++++++
+ 1 file changed, 15 insertions(+)
+
+--- a/drivers/iio/adc/at91-sama5d2_adc.c
++++ b/drivers/iio/adc/at91-sama5d2_adc.c
+@@ -731,6 +731,7 @@ static int at91_adc_configure_trigger(st
+
+ for_each_set_bit(bit, indio->active_scan_mask, indio->num_channels) {
+ struct iio_chan_spec const *chan = at91_adc_chan_get(indio, bit);
++ u32 cor;
+
+ if (!chan)
+ continue;
+@@ -740,6 +741,20 @@ static int at91_adc_configure_trigger(st
+ continue;
+
+ if (state) {
++ cor = at91_adc_readl(st, AT91_SAMA5D2_COR);
++
++ if (chan->differential)
++ cor |= (BIT(chan->channel) |
++ BIT(chan->channel2)) <<
++ AT91_SAMA5D2_COR_DIFF_OFFSET;
++ else
++ cor &= ~(BIT(chan->channel) <<
++ AT91_SAMA5D2_COR_DIFF_OFFSET);
++
++ at91_adc_writel(st, AT91_SAMA5D2_COR, cor);
++ }
++
++ if (state) {
+ at91_adc_writel(st, AT91_SAMA5D2_CHER,
+ BIT(chan->channel));
+ /* enable irq only if not using DMA */
--- /dev/null
+From b500c086e4110829a308c23e83a7cdc65b26228a Mon Sep 17 00:00:00 2001
+From: Stephan Gerhold <stephan@gerhold.net>
+Date: Fri, 14 Feb 2020 12:03:24 +0100
+Subject: iio: magnetometer: ak8974: Fix negative raw values in sysfs
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+From: Stephan Gerhold <stephan@gerhold.net>
+
+commit b500c086e4110829a308c23e83a7cdc65b26228a upstream.
+
+At the moment, reading from in_magn_*_raw in sysfs tends to return
+large values around 65000, even though the output of ak8974 is actually
+limited to ±32768. This happens because the value is never converted
+to the signed 16-bit integer variant.
+
+Add an explicit cast to s16 to fix this.
+
+Fixes: 7c94a8b2ee8c ("iio: magn: add a driver for AK8974")
+Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
+Reviewed-by: Linus Waleij <linus.walleij@linaro.org>
+Cc: <Stable@vger.kernel.org>
+Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/iio/magnetometer/ak8974.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/iio/magnetometer/ak8974.c
++++ b/drivers/iio/magnetometer/ak8974.c
+@@ -563,7 +563,7 @@ static int ak8974_read_raw(struct iio_de
+ * We read all axes and discard all but one, for optimized
+ * reading, use the triggered buffer.
+ */
+- *val = le16_to_cpu(hw_values[chan->address]);
++ *val = (s16)le16_to_cpu(hw_values[chan->address]);
+
+ ret = IIO_VAL_INT;
+ }
--- /dev/null
+From e43d110cdc206b6df4dd438cd10c81d1da910aad Mon Sep 17 00:00:00 2001
+From: Wen-chien Jesse Sung <jesse.sung@canonical.com>
+Date: Mon, 24 Feb 2020 17:54:26 +0800
+Subject: iio: st_sensors: remap SMO8840 to LIS2DH12
+
+From: Wen-chien Jesse Sung <jesse.sung@canonical.com>
+
+commit e43d110cdc206b6df4dd438cd10c81d1da910aad upstream.
+
+According to ST, the HID is for LIS2DH12.
+
+Fixes: 3d56e19815b3 ("iio: accel: st_accel: Add support for the SMO8840 ACPI id")
+Signed-off-by: Wen-chien Jesse Sung <jesse.sung@canonical.com>
+Tested-by: Hans de Goede <hdegoede@redhat.com>
+Reviewed-by: Hans de Goede <hdegoede@redhat.com>
+Cc: <Stable@vger.kernel.org>
+Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/iio/accel/st_accel_i2c.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/iio/accel/st_accel_i2c.c
++++ b/drivers/iio/accel/st_accel_i2c.c
+@@ -107,7 +107,7 @@ MODULE_DEVICE_TABLE(of, st_accel_of_matc
+
+ #ifdef CONFIG_ACPI
+ static const struct acpi_device_id st_accel_acpi_match[] = {
+- {"SMO8840", (kernel_ulong_t)LNG2DM_ACCEL_DEV_NAME},
++ {"SMO8840", (kernel_ulong_t)LIS2DH12_ACCEL_DEV_NAME},
+ {"SMO8A90", (kernel_ulong_t)LNG2DM_ACCEL_DEV_NAME},
+ { },
+ };
--- /dev/null
+From 29e8c8253d7d5265f58122c0a7902e26df6c6f61 Mon Sep 17 00:00:00 2001
+From: Fabrice Gasnier <fabrice.gasnier@st.com>
+Date: Fri, 14 Feb 2020 17:46:35 +0100
+Subject: iio: trigger: stm32-timer: disable master mode when stopping
+
+From: Fabrice Gasnier <fabrice.gasnier@st.com>
+
+commit 29e8c8253d7d5265f58122c0a7902e26df6c6f61 upstream.
+
+Master mode should be disabled when stopping. This mainly impacts
+possible other use-case after timer has been stopped. Currently,
+master mode remains set (from start routine).
+
+Fixes: 6fb34812c2a2 ("iio: stm32 trigger: Add support for TRGO2 triggers")
+
+Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
+Cc: <Stable@vger.kernel.org>
+Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/iio/trigger/stm32-timer-trigger.c | 11 +++++++++--
+ 1 file changed, 9 insertions(+), 2 deletions(-)
+
+--- a/drivers/iio/trigger/stm32-timer-trigger.c
++++ b/drivers/iio/trigger/stm32-timer-trigger.c
+@@ -161,7 +161,8 @@ static int stm32_timer_start(struct stm3
+ return 0;
+ }
+
+-static void stm32_timer_stop(struct stm32_timer_trigger *priv)
++static void stm32_timer_stop(struct stm32_timer_trigger *priv,
++ struct iio_trigger *trig)
+ {
+ u32 ccer, cr1;
+
+@@ -179,6 +180,12 @@ static void stm32_timer_stop(struct stm3
+ regmap_write(priv->regmap, TIM_PSC, 0);
+ regmap_write(priv->regmap, TIM_ARR, 0);
+
++ /* Force disable master mode */
++ if (stm32_timer_is_trgo2_name(trig->name))
++ regmap_update_bits(priv->regmap, TIM_CR2, TIM_CR2_MMS2, 0);
++ else
++ regmap_update_bits(priv->regmap, TIM_CR2, TIM_CR2_MMS, 0);
++
+ /* Make sure that registers are updated */
+ regmap_update_bits(priv->regmap, TIM_EGR, TIM_EGR_UG, TIM_EGR_UG);
+ }
+@@ -197,7 +204,7 @@ static ssize_t stm32_tt_store_frequency(
+ return ret;
+
+ if (freq == 0) {
+- stm32_timer_stop(priv);
++ stm32_timer_stop(priv, trig);
+ } else {
+ ret = stm32_timer_start(priv, trig, freq);
+ if (ret)
--- /dev/null
+From ce666be89a8a09c5924ff08fc32e119f974bdab6 Mon Sep 17 00:00:00 2001
+From: Alexander Shishkin <alexander.shishkin@linux.intel.com>
+Date: Tue, 17 Mar 2020 08:22:14 +0200
+Subject: intel_th: Fix user-visible error codes
+
+From: Alexander Shishkin <alexander.shishkin@linux.intel.com>
+
+commit ce666be89a8a09c5924ff08fc32e119f974bdab6 upstream.
+
+There are a few places in the driver that end up returning ENOTSUPP to
+the user, replace those with EINVAL.
+
+Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
+Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
+Fixes: ba82664c134ef ("intel_th: Add Memory Storage Unit driver")
+Cc: stable@vger.kernel.org # v4.4+
+Link: https://lore.kernel.org/r/20200317062215.15598-6-alexander.shishkin@linux.intel.com
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/hwtracing/intel_th/msu.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+--- a/drivers/hwtracing/intel_th/msu.c
++++ b/drivers/hwtracing/intel_th/msu.c
+@@ -491,7 +491,7 @@ static int msc_configure(struct msc *msc
+ lockdep_assert_held(&msc->buf_mutex);
+
+ if (msc->mode > MSC_MODE_MULTI)
+- return -ENOTSUPP;
++ return -EINVAL;
+
+ if (msc->mode == MSC_MODE_MULTI)
+ msc_buffer_clear_hw_header(msc);
+@@ -942,7 +942,7 @@ static int msc_buffer_alloc(struct msc *
+ } else if (msc->mode == MSC_MODE_MULTI) {
+ ret = msc_buffer_multi_alloc(msc, nr_pages, nr_wins);
+ } else {
+- ret = -ENOTSUPP;
++ ret = -EINVAL;
+ }
+
+ if (!ret) {
+@@ -1165,7 +1165,7 @@ static ssize_t intel_th_msc_read(struct
+ if (ret >= 0)
+ *ppos = iter->offset;
+ } else {
+- ret = -ENOTSUPP;
++ ret = -EINVAL;
+ }
+
+ put_count:
--- /dev/null
+From add492d2e9446a77ede9bb43699ec85ca8fc1aba Mon Sep 17 00:00:00 2001
+From: Alexander Shishkin <alexander.shishkin@linux.intel.com>
+Date: Tue, 17 Mar 2020 08:22:15 +0200
+Subject: intel_th: pci: Add Elkhart Lake CPU support
+
+From: Alexander Shishkin <alexander.shishkin@linux.intel.com>
+
+commit add492d2e9446a77ede9bb43699ec85ca8fc1aba upstream.
+
+This adds support for the Trace Hub in Elkhart Lake CPU.
+
+Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
+Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
+Cc: stable@vger.kernel.org
+Link: https://lore.kernel.org/r/20200317062215.15598-7-alexander.shishkin@linux.intel.com
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/hwtracing/intel_th/pci.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+--- a/drivers/hwtracing/intel_th/pci.c
++++ b/drivers/hwtracing/intel_th/pci.c
+@@ -211,6 +211,11 @@ static const struct pci_device_id intel_
+ .driver_data = (kernel_ulong_t)&intel_th_2x,
+ },
+ {
++ /* Elkhart Lake CPU */
++ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4529),
++ .driver_data = (kernel_ulong_t)&intel_th_2x,
++ },
++ {
+ /* Elkhart Lake */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4b26),
+ .driver_data = (kernel_ulong_t)&intel_th_2x,
--- /dev/null
+From 7d36665a5886c27ca4c4d0afd3ecc50b400f3587 Mon Sep 17 00:00:00 2001
+From: Chunguang Xu <brookxu@tencent.com>
+Date: Sat, 21 Mar 2020 18:22:10 -0700
+Subject: memcg: fix NULL pointer dereference in __mem_cgroup_usage_unregister_event
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+From: Chunguang Xu <brookxu@tencent.com>
+
+commit 7d36665a5886c27ca4c4d0afd3ecc50b400f3587 upstream.
+
+An eventfd monitors multiple memory thresholds of the cgroup, closes them,
+the kernel deletes all events related to this eventfd. Before all events
+are deleted, another eventfd monitors the memory threshold of this cgroup,
+leading to a crash:
+
+ BUG: kernel NULL pointer dereference, address: 0000000000000004
+ #PF: supervisor write access in kernel mode
+ #PF: error_code(0x0002) - not-present page
+ PGD 800000033058e067 P4D 800000033058e067 PUD 3355ce067 PMD 0
+ Oops: 0002 [#1] SMP PTI
+ CPU: 2 PID: 14012 Comm: kworker/2:6 Kdump: loaded Not tainted 5.6.0-rc4 #3
+ Hardware name: LENOVO 20AWS01K00/20AWS01K00, BIOS GLET70WW (2.24 ) 05/21/2014
+ Workqueue: events memcg_event_remove
+ RIP: 0010:__mem_cgroup_usage_unregister_event+0xb3/0x190
+ RSP: 0018:ffffb47e01c4fe18 EFLAGS: 00010202
+ RAX: 0000000000000001 RBX: ffff8bb223a8a000 RCX: 0000000000000001
+ RDX: 0000000000000001 RSI: ffff8bb22fb83540 RDI: 0000000000000001
+ RBP: ffffb47e01c4fe48 R08: 0000000000000000 R09: 0000000000000010
+ R10: 000000000000000c R11: 071c71c71c71c71c R12: ffff8bb226aba880
+ R13: ffff8bb223a8a480 R14: 0000000000000000 R15: 0000000000000000
+ FS: 0000000000000000(0000) GS:ffff8bb242680000(0000) knlGS:0000000000000000
+ CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
+ CR2: 0000000000000004 CR3: 000000032c29c003 CR4: 00000000001606e0
+ Call Trace:
+ memcg_event_remove+0x32/0x90
+ process_one_work+0x172/0x380
+ worker_thread+0x49/0x3f0
+ kthread+0xf8/0x130
+ ret_from_fork+0x35/0x40
+ CR2: 0000000000000004
+
+We can reproduce this problem in the following ways:
+
+1. We create a new cgroup subdirectory and a new eventfd, and then we
+ monitor multiple memory thresholds of the cgroup through this eventfd.
+
+2. closing this eventfd, and __mem_cgroup_usage_unregister_event ()
+ will be called multiple times to delete all events related to this
+ eventfd.
+
+The first time __mem_cgroup_usage_unregister_event() is called, the
+kernel will clear all items related to this eventfd in thresholds->
+primary.
+
+Since there is currently only one eventfd, thresholds-> primary becomes
+empty, so the kernel will set thresholds-> primary and hresholds-> spare
+to NULL. If at this time, the user creates a new eventfd and monitor
+the memory threshold of this cgroup, kernel will re-initialize
+thresholds-> primary.
+
+Then when __mem_cgroup_usage_unregister_event () is called for the
+second time, because thresholds-> primary is not empty, the system will
+access thresholds-> spare, but thresholds-> spare is NULL, which will
+trigger a crash.
+
+In general, the longer it takes to delete all events related to this
+eventfd, the easier it is to trigger this problem.
+
+The solution is to check whether the thresholds associated with the
+eventfd has been cleared when deleting the event. If so, we do nothing.
+
+[akpm@linux-foundation.org: fix comment, per Kirill]
+Fixes: 907860ed381a ("cgroups: make cftype.unregister_event() void-returning")
+Signed-off-by: Chunguang Xu <brookxu@tencent.com>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Acked-by: Michal Hocko <mhocko@suse.com>
+Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
+Cc: Johannes Weiner <hannes@cmpxchg.org>
+Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
+Cc: <stable@vger.kernel.org>
+Link: http://lkml.kernel.org/r/077a6f67-aefa-4591-efec-f2f3af2b0b02@gmail.com
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ mm/memcontrol.c | 10 ++++++++--
+ 1 file changed, 8 insertions(+), 2 deletions(-)
+
+--- a/mm/memcontrol.c
++++ b/mm/memcontrol.c
+@@ -3759,7 +3759,7 @@ static void __mem_cgroup_usage_unregiste
+ struct mem_cgroup_thresholds *thresholds;
+ struct mem_cgroup_threshold_ary *new;
+ unsigned long usage;
+- int i, j, size;
++ int i, j, size, entries;
+
+ mutex_lock(&memcg->thresholds_lock);
+
+@@ -3779,14 +3779,20 @@ static void __mem_cgroup_usage_unregiste
+ __mem_cgroup_threshold(memcg, type == _MEMSWAP);
+
+ /* Calculate new number of threshold */
+- size = 0;
++ size = entries = 0;
+ for (i = 0; i < thresholds->primary->size; i++) {
+ if (thresholds->primary->entries[i].eventfd != eventfd)
+ size++;
++ else
++ entries++;
+ }
+
+ new = thresholds->spare;
+
++ /* If no items related to eventfd have been cleared, nothing to do */
++ if (!entries)
++ goto unlock;
++
+ /* Set thresholds array to NULL if we don't have thresholds */
+ if (!size) {
+ kfree(new);
--- /dev/null
+From 5076190daded2197f62fe92cf69674488be44175 Mon Sep 17 00:00:00 2001
+From: Linus Torvalds <torvalds@linux-foundation.org>
+Date: Tue, 17 Mar 2020 11:04:09 -0700
+Subject: mm: slub: be more careful about the double cmpxchg of freelist
+
+From: Linus Torvalds <torvalds@linux-foundation.org>
+
+commit 5076190daded2197f62fe92cf69674488be44175 upstream.
+
+This is just a cleanup addition to Jann's fix to properly update the
+transaction ID for the slub slowpath in commit fd4d9c7d0c71 ("mm: slub:
+add missing TID bump..").
+
+The transaction ID is what protects us against any concurrent accesses,
+but we should really also make sure to make the 'freelist' comparison
+itself always use the same freelist value that we then used as the new
+next free pointer.
+
+Jann points out that if we do all of this carefully, we could skip the
+transaction ID update for all the paths that only remove entries from
+the lists, and only update the TID when adding entries (to avoid the ABA
+issue with cmpxchg and list handling re-adding a previously seen value).
+
+But this patch just does the "make sure to cmpxchg the same value we
+used" rather than then try to be clever.
+
+Acked-by: Jann Horn <jannh@google.com>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ mm/slub.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+--- a/mm/slub.c
++++ b/mm/slub.c
+@@ -2926,11 +2926,13 @@ redo:
+ barrier();
+
+ if (likely(page == c->page)) {
+- set_freepointer(s, tail_obj, c->freelist);
++ void **freelist = READ_ONCE(c->freelist);
++
++ set_freepointer(s, tail_obj, freelist);
+
+ if (unlikely(!this_cpu_cmpxchg_double(
+ s->cpu_slab->freelist, s->cpu_slab->tid,
+- c->freelist, tid,
++ freelist, tid,
+ head, next_tid(tid)))) {
+
+ note_cmpxchg_failure("slab_free", s, tid);
--- /dev/null
+From 0715e6c516f106ed553828a671d30ad9a3431536 Mon Sep 17 00:00:00 2001
+From: Vlastimil Babka <vbabka@suse.cz>
+Date: Sat, 21 Mar 2020 18:22:37 -0700
+Subject: mm, slub: prevent kmalloc_node crashes and memory leaks
+
+From: Vlastimil Babka <vbabka@suse.cz>
+
+commit 0715e6c516f106ed553828a671d30ad9a3431536 upstream.
+
+Sachin reports [1] a crash in SLUB __slab_alloc():
+
+ BUG: Kernel NULL pointer dereference on read at 0x000073b0
+ Faulting instruction address: 0xc0000000003d55f4
+ Oops: Kernel access of bad area, sig: 11 [#1]
+ LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries
+ Modules linked in:
+ CPU: 19 PID: 1 Comm: systemd Not tainted 5.6.0-rc2-next-20200218-autotest #1
+ NIP: c0000000003d55f4 LR: c0000000003d5b94 CTR: 0000000000000000
+ REGS: c0000008b37836d0 TRAP: 0300 Not tainted (5.6.0-rc2-next-20200218-autotest)
+ MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 24004844 XER: 00000000
+ CFAR: c00000000000dec4 DAR: 00000000000073b0 DSISR: 40000000 IRQMASK: 1
+ GPR00: c0000000003d5b94 c0000008b3783960 c00000000155d400 c0000008b301f500
+ GPR04: 0000000000000dc0 0000000000000002 c0000000003443d8 c0000008bb398620
+ GPR08: 00000008ba2f0000 0000000000000001 0000000000000000 0000000000000000
+ GPR12: 0000000024004844 c00000001ec52a00 0000000000000000 0000000000000000
+ GPR16: c0000008a1b20048 c000000001595898 c000000001750c18 0000000000000002
+ GPR20: c000000001750c28 c000000001624470 0000000fffffffe0 5deadbeef0000122
+ GPR24: 0000000000000001 0000000000000dc0 0000000000000002 c0000000003443d8
+ GPR28: c0000008b301f500 c0000008bb398620 0000000000000000 c00c000002287180
+ NIP ___slab_alloc+0x1f4/0x760
+ LR __slab_alloc+0x34/0x60
+ Call Trace:
+ ___slab_alloc+0x334/0x760 (unreliable)
+ __slab_alloc+0x34/0x60
+ __kmalloc_node+0x110/0x490
+ kvmalloc_node+0x58/0x110
+ mem_cgroup_css_online+0x108/0x270
+ online_css+0x48/0xd0
+ cgroup_apply_control_enable+0x2ec/0x4d0
+ cgroup_mkdir+0x228/0x5f0
+ kernfs_iop_mkdir+0x90/0xf0
+ vfs_mkdir+0x110/0x230
+ do_mkdirat+0xb0/0x1a0
+ system_call+0x5c/0x68
+
+This is a PowerPC platform with following NUMA topology:
+
+ available: 2 nodes (0-1)
+ node 0 cpus:
+ node 0 size: 0 MB
+ node 0 free: 0 MB
+ node 1 cpus: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
+ node 1 size: 35247 MB
+ node 1 free: 30907 MB
+ node distances:
+ node 0 1
+ 0: 10 40
+ 1: 40 10
+
+ possible numa nodes: 0-31
+
+This only happens with a mmotm patch "mm/memcontrol.c: allocate
+shrinker_map on appropriate NUMA node" [2] which effectively calls
+kmalloc_node for each possible node. SLUB however only allocates
+kmem_cache_node on online N_NORMAL_MEMORY nodes, and relies on
+node_to_mem_node to return such valid node for other nodes since commit
+a561ce00b09e ("slub: fall back to node_to_mem_node() node if allocating
+on memoryless node"). This is however not true in this configuration
+where the _node_numa_mem_ array is not initialized for nodes 0 and 2-31,
+thus it contains zeroes and get_partial() ends up accessing
+non-allocated kmem_cache_node.
+
+A related issue was reported by Bharata (originally by Ramachandran) [3]
+where a similar PowerPC configuration, but with mainline kernel without
+patch [2] ends up allocating large amounts of pages by kmalloc-1k
+kmalloc-512. This seems to have the same underlying issue with
+node_to_mem_node() not behaving as expected, and might probably also
+lead to an infinite loop with CONFIG_SLUB_CPU_PARTIAL [4].
+
+This patch should fix both issues by not relying on node_to_mem_node()
+anymore and instead simply falling back to NUMA_NO_NODE, when
+kmalloc_node(node) is attempted for a node that's not online, or has no
+usable memory. The "usable memory" condition is also changed from
+node_present_pages() to N_NORMAL_MEMORY node state, as that is exactly
+the condition that SLUB uses to allocate kmem_cache_node structures.
+The check in get_partial() is removed completely, as the checks in
+___slab_alloc() are now sufficient to prevent get_partial() being
+reached with an invalid node.
+
+[1] https://lore.kernel.org/linux-next/3381CD91-AB3D-4773-BA04-E7A072A63968@linux.vnet.ibm.com/
+[2] https://lore.kernel.org/linux-mm/fff0e636-4c36-ed10-281c-8cdb0687c839@virtuozzo.com/
+[3] https://lore.kernel.org/linux-mm/20200317092624.GB22538@in.ibm.com/
+[4] https://lore.kernel.org/linux-mm/088b5996-faae-8a56-ef9c-5b567125ae54@suse.cz/
+
+Fixes: a561ce00b09e ("slub: fall back to node_to_mem_node() node if allocating on memoryless node")
+Reported-by: Sachin Sant <sachinp@linux.vnet.ibm.com>
+Reported-by: PUVICHAKRAVARTHY RAMACHANDRAN <puvichakravarthy@in.ibm.com>
+Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Tested-by: Sachin Sant <sachinp@linux.vnet.ibm.com>
+Tested-by: Bharata B Rao <bharata@linux.ibm.com>
+Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
+Cc: Mel Gorman <mgorman@techsingularity.net>
+Cc: Michael Ellerman <mpe@ellerman.id.au>
+Cc: Michal Hocko <mhocko@kernel.org>
+Cc: Christopher Lameter <cl@linux.com>
+Cc: linuxppc-dev@lists.ozlabs.org
+Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
+Cc: Pekka Enberg <penberg@kernel.org>
+Cc: David Rientjes <rientjes@google.com>
+Cc: Kirill Tkhai <ktkhai@virtuozzo.com>
+Cc: Vlastimil Babka <vbabka@suse.cz>
+Cc: Nathan Lynch <nathanl@linux.ibm.com>
+Cc: <stable@vger.kernel.org>
+Link: http://lkml.kernel.org/r/20200320115533.9604-1-vbabka@suse.cz
+Debugged-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ mm/slub.c | 26 +++++++++++++++++---------
+ 1 file changed, 17 insertions(+), 9 deletions(-)
+
+--- a/mm/slub.c
++++ b/mm/slub.c
+@@ -1906,8 +1906,6 @@ static void *get_partial(struct kmem_cac
+
+ if (node == NUMA_NO_NODE)
+ searchnode = numa_mem_id();
+- else if (!node_present_pages(node))
+- searchnode = node_to_mem_node(node);
+
+ object = get_partial_node(s, get_node(s, searchnode), c, flags);
+ if (object || node != NUMA_NO_NODE)
+@@ -2504,17 +2502,27 @@ static void *___slab_alloc(struct kmem_c
+ struct page *page;
+
+ page = c->page;
+- if (!page)
++ if (!page) {
++ /*
++ * if the node is not online or has no normal memory, just
++ * ignore the node constraint
++ */
++ if (unlikely(node != NUMA_NO_NODE &&
++ !node_state(node, N_NORMAL_MEMORY)))
++ node = NUMA_NO_NODE;
+ goto new_slab;
++ }
+ redo:
+
+ if (unlikely(!node_match(page, node))) {
+- int searchnode = node;
+-
+- if (node != NUMA_NO_NODE && !node_present_pages(node))
+- searchnode = node_to_mem_node(node);
+-
+- if (unlikely(!node_match(page, searchnode))) {
++ /*
++ * same as above but node_match() being false already
++ * implies node != NUMA_NO_NODE
++ */
++ if (!node_state(node, N_NORMAL_MEMORY)) {
++ node = NUMA_NO_NODE;
++ goto redo;
++ } else {
+ stat(s, ALLOC_NODE_MISMATCH);
+ deactivate_slab(s, page, c->freelist, c);
+ goto new_slab;
--- /dev/null
+From 4686392c32361c97e8434adf9cc77ad7991bfa81 Mon Sep 17 00:00:00 2001
+From: Ricky Wu <ricky_wu@realtek.com>
+Date: Mon, 16 Mar 2020 10:52:32 +0800
+Subject: mmc: rtsx_pci: Fix support for speed-modes that relies on tuning
+
+From: Ricky Wu <ricky_wu@realtek.com>
+
+commit 4686392c32361c97e8434adf9cc77ad7991bfa81 upstream.
+
+The TX/RX register should not be treated the same way to allow for better
+support of tuning. Fix this by using a default initial value for TX.
+
+Signed-off-by: Ricky Wu <ricky_wu@realtek.com>
+Cc: stable@vger.kernel.org
+Link: https://lore.kernel.org/r/20200316025232.1167-1-ricky_wu@realtek.com
+[Ulf: Updated changelog]
+Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
+Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/misc/cardreader/rts5227.c | 2 +-
+ drivers/misc/cardreader/rts5249.c | 2 ++
+ drivers/misc/cardreader/rts5260.c | 2 +-
+ drivers/mmc/host/rtsx_pci_sdmmc.c | 13 ++++++++-----
+ 4 files changed, 12 insertions(+), 7 deletions(-)
+
+--- a/drivers/misc/cardreader/rts5227.c
++++ b/drivers/misc/cardreader/rts5227.c
+@@ -369,6 +369,6 @@ static const struct pcr_ops rts522a_pcr_
+ void rts522a_init_params(struct rtsx_pcr *pcr)
+ {
+ rts5227_init_params(pcr);
+-
++ pcr->tx_initial_phase = SET_CLOCK_PHASE(20, 20, 11);
+ pcr->reg_pm_ctrl3 = RTS522A_PM_CTRL3;
+ }
+--- a/drivers/misc/cardreader/rts5249.c
++++ b/drivers/misc/cardreader/rts5249.c
+@@ -623,6 +623,7 @@ static const struct pcr_ops rts524a_pcr_
+ void rts524a_init_params(struct rtsx_pcr *pcr)
+ {
+ rts5249_init_params(pcr);
++ pcr->tx_initial_phase = SET_CLOCK_PHASE(27, 29, 11);
+ pcr->option.ltr_l1off_sspwrgate = LTR_L1OFF_SSPWRGATE_5250_DEF;
+ pcr->option.ltr_l1off_snooze_sspwrgate =
+ LTR_L1OFF_SNOOZE_SSPWRGATE_5250_DEF;
+@@ -731,6 +732,7 @@ static const struct pcr_ops rts525a_pcr_
+ void rts525a_init_params(struct rtsx_pcr *pcr)
+ {
+ rts5249_init_params(pcr);
++ pcr->tx_initial_phase = SET_CLOCK_PHASE(25, 29, 11);
+ pcr->option.ltr_l1off_sspwrgate = LTR_L1OFF_SSPWRGATE_5250_DEF;
+ pcr->option.ltr_l1off_snooze_sspwrgate =
+ LTR_L1OFF_SNOOZE_SSPWRGATE_5250_DEF;
+--- a/drivers/misc/cardreader/rts5260.c
++++ b/drivers/misc/cardreader/rts5260.c
+@@ -712,7 +712,7 @@ void rts5260_init_params(struct rtsx_pcr
+ pcr->sd30_drive_sel_1v8 = CFG_DRIVER_TYPE_B;
+ pcr->sd30_drive_sel_3v3 = CFG_DRIVER_TYPE_B;
+ pcr->aspm_en = ASPM_L1_EN;
+- pcr->tx_initial_phase = SET_CLOCK_PHASE(1, 29, 16);
++ pcr->tx_initial_phase = SET_CLOCK_PHASE(27, 29, 11);
+ pcr->rx_initial_phase = SET_CLOCK_PHASE(24, 6, 5);
+
+ pcr->ic_version = rts5260_get_ic_version(pcr);
+--- a/drivers/mmc/host/rtsx_pci_sdmmc.c
++++ b/drivers/mmc/host/rtsx_pci_sdmmc.c
+@@ -618,19 +618,22 @@ static int sd_change_phase(struct realte
+ u8 sample_point, bool rx)
+ {
+ struct rtsx_pcr *pcr = host->pcr;
+-
++ u16 SD_VP_CTL = 0;
+ dev_dbg(sdmmc_dev(host), "%s(%s): sample_point = %d\n",
+ __func__, rx ? "RX" : "TX", sample_point);
+
+ rtsx_pci_write_register(pcr, CLK_CTL, CHANGE_CLK, CHANGE_CLK);
+- if (rx)
++ if (rx) {
++ SD_VP_CTL = SD_VPRX_CTL;
+ rtsx_pci_write_register(pcr, SD_VPRX_CTL,
+ PHASE_SELECT_MASK, sample_point);
+- else
++ } else {
++ SD_VP_CTL = SD_VPTX_CTL;
+ rtsx_pci_write_register(pcr, SD_VPTX_CTL,
+ PHASE_SELECT_MASK, sample_point);
+- rtsx_pci_write_register(pcr, SD_VPCLK0_CTL, PHASE_NOT_RESET, 0);
+- rtsx_pci_write_register(pcr, SD_VPCLK0_CTL, PHASE_NOT_RESET,
++ }
++ rtsx_pci_write_register(pcr, SD_VP_CTL, PHASE_NOT_RESET, 0);
++ rtsx_pci_write_register(pcr, SD_VP_CTL, PHASE_NOT_RESET,
+ PHASE_NOT_RESET);
+ rtsx_pci_write_register(pcr, CLK_CTL, CHANGE_CLK, 0);
+ rtsx_pci_write_register(pcr, SD_CFG1, SD_ASYNC_FIFO_NOT_RST, 0);
--- /dev/null
+From 53dd0a7cd65edc83b0c243d1c08377c8b876b2ee Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= <mirq-linux@rere.qmqm.pl>
+Date: Sun, 15 Mar 2020 17:44:25 +0100
+Subject: mmc: sdhci-of-at91: fix cd-gpios for SAMA5D2
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+From: Michał Mirosław <mirq-linux@rere.qmqm.pl>
+
+commit 53dd0a7cd65edc83b0c243d1c08377c8b876b2ee upstream.
+
+SAMA5D2x doesn't drive CMD line if GPIO is used as CD line (at least
+SAMA5D27 doesn't). Fix this by forcing card-detect in the module
+if module-controlled CD is not used.
+
+Fixed commit addresses the problem only for non-removable cards. This
+amends it to also cover gpio-cd case.
+
+Cc: stable@vger.kernel.org
+Fixes: 7a1e3f143176 ("mmc: sdhci-of-at91: force card detect value for non removable devices")
+Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
+Acked-by: Adrian Hunter <adrian.hunter@intel.com>
+Link: https://lore.kernel.org/r/8d10950d9940468577daef4772b82a071b204716.1584290561.git.mirq-linux@rere.qmqm.pl
+Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/mmc/host/sdhci-of-at91.c | 8 ++++++--
+ 1 file changed, 6 insertions(+), 2 deletions(-)
+
+--- a/drivers/mmc/host/sdhci-of-at91.c
++++ b/drivers/mmc/host/sdhci-of-at91.c
+@@ -126,7 +126,8 @@ static void sdhci_at91_reset(struct sdhc
+ {
+ sdhci_reset(host, mask);
+
+- if (host->mmc->caps & MMC_CAP_NONREMOVABLE)
++ if ((host->mmc->caps & MMC_CAP_NONREMOVABLE)
++ || mmc_gpio_get_cd(host->mmc) >= 0)
+ sdhci_at91_set_force_card_detect(host);
+ }
+
+@@ -405,8 +406,11 @@ static int sdhci_at91_probe(struct platf
+ * detection procedure using the SDMCC_CD signal is bypassed.
+ * This bit is reset when a software reset for all command is performed
+ * so we need to implement our own reset function to set back this bit.
++ *
++ * WA: SAMA5D2 doesn't drive CMD if using CD GPIO line.
+ */
+- if (host->mmc->caps & MMC_CAP_NONREMOVABLE)
++ if ((host->mmc->caps & MMC_CAP_NONREMOVABLE)
++ || mmc_gpio_get_cd(host->mmc) >= 0)
+ sdhci_at91_set_force_card_detect(host);
+
+ pm_runtime_put_autosuspend(&pdev->dev);
--- /dev/null
+From d72520ad004a8ce18a6ba6cde317f0081b27365a Mon Sep 17 00:00:00 2001
+From: Qian Cai <cai@lca.pw>
+Date: Sat, 21 Mar 2020 18:22:17 -0700
+Subject: page-flags: fix a crash at SetPageError(THP_SWAP)
+
+From: Qian Cai <cai@lca.pw>
+
+commit d72520ad004a8ce18a6ba6cde317f0081b27365a upstream.
+
+Commit bd4c82c22c36 ("mm, THP, swap: delay splitting THP after swapped
+out") supported writing THP to a swap device but forgot to upgrade an
+older commit df8c94d13c7e ("page-flags: define behavior of FS/IO-related
+flags on compound pages") which could trigger a crash during THP
+swapping out with DEBUG_VM_PGFLAGS=y,
+
+ kernel BUG at include/linux/page-flags.h:317!
+
+ page dumped because: VM_BUG_ON_PAGE(1 && PageCompound(page))
+ page:fffff3b2ec3a8000 refcount:512 mapcount:0 mapping:000000009eb0338c index:0x7f6e58200 head:fffff3b2ec3a8000 order:9 compound_mapcount:0 compound_pincount:0
+ anon flags: 0x45fffe0000d8454(uptodate|lru|workingset|owner_priv_1|writeback|head|reclaim|swapbacked)
+
+ end_swap_bio_write()
+ SetPageError(page)
+ VM_BUG_ON_PAGE(1 && PageCompound(page))
+
+ <IRQ>
+ bio_endio+0x297/0x560
+ dec_pending+0x218/0x430 [dm_mod]
+ clone_endio+0xe4/0x2c0 [dm_mod]
+ bio_endio+0x297/0x560
+ blk_update_request+0x201/0x920
+ scsi_end_request+0x6b/0x4b0
+ scsi_io_completion+0x509/0x7e0
+ scsi_finish_command+0x1ed/0x2a0
+ scsi_softirq_done+0x1c9/0x1d0
+ __blk_mqnterrupt+0xf/0x20
+ </IRQ>
+
+Fix by checking PF_NO_TAIL in those places instead.
+
+Fixes: bd4c82c22c36 ("mm, THP, swap: delay splitting THP after swapped out")
+Signed-off-by: Qian Cai <cai@lca.pw>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Reviewed-by: David Hildenbrand <david@redhat.com>
+Acked-by: "Huang, Ying" <ying.huang@intel.com>
+Acked-by: Rafael Aquini <aquini@redhat.com>
+Cc: <stable@vger.kernel.org>
+Link: http://lkml.kernel.org/r/20200310235846.1319-1-cai@lca.pw
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ include/linux/page-flags.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/include/linux/page-flags.h
++++ b/include/linux/page-flags.h
+@@ -271,7 +271,7 @@ static inline int TestClearPage##uname(s
+
+ __PAGEFLAG(Locked, locked, PF_NO_TAIL)
+ PAGEFLAG(Waiters, waiters, PF_ONLY_HEAD) __CLEARPAGEFLAG(Waiters, waiters, PF_ONLY_HEAD)
+-PAGEFLAG(Error, error, PF_NO_COMPOUND) TESTCLEARFLAG(Error, error, PF_NO_COMPOUND)
++PAGEFLAG(Error, error, PF_NO_TAIL) TESTCLEARFLAG(Error, error, PF_NO_TAIL)
+ PAGEFLAG(Referenced, referenced, PF_HEAD)
+ TESTCLEARFLAG(Referenced, referenced, PF_HEAD)
+ __SETPAGEFLAG(Referenced, referenced, PF_HEAD)
--- /dev/null
+From 5d892919fdd0cefd361697472d4e1b174a594991 Mon Sep 17 00:00:00 2001
+From: Corentin Labbe <clabbe@baylibre.com>
+Date: Wed, 18 Mar 2020 15:26:49 +0000
+Subject: rtc: max8907: add missing select REGMAP_IRQ
+
+From: Corentin Labbe <clabbe@baylibre.com>
+
+commit 5d892919fdd0cefd361697472d4e1b174a594991 upstream.
+
+I have hit the following build error:
+
+ armv7a-hardfloat-linux-gnueabi-ld: drivers/rtc/rtc-max8907.o: in function `max8907_rtc_probe':
+ rtc-max8907.c:(.text+0x400): undefined reference to `regmap_irq_get_virq'
+
+max8907 should select REGMAP_IRQ
+
+Fixes: 94c01ab6d7544 ("rtc: add MAX8907 RTC driver")
+Cc: stable <stable@vger.kernel.org>
+Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/rtc/Kconfig | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/rtc/Kconfig
++++ b/drivers/rtc/Kconfig
+@@ -314,6 +314,7 @@ config RTC_DRV_MAX6900
+ config RTC_DRV_MAX8907
+ tristate "Maxim MAX8907"
+ depends on MFD_MAX8907 || COMPILE_TEST
++ select REGMAP_IRQ
+ help
+ If you say yes here you will get support for the
+ RTC of Maxim MAX8907 PMIC.
alsa-seq-oss-fix-running-status-after-receiving-sysex.patch
alsa-pcm-oss-avoid-plugin-buffer-overflow.patch
alsa-pcm-oss-remove-warning-from-snd_pcm_plug_alloc-checks.patch
+iio-st_sensors-remap-smo8840-to-lis2dh12.patch
+iio-trigger-stm32-timer-disable-master-mode-when-stopping.patch
+iio-magnetometer-ak8974-fix-negative-raw-values-in-sysfs.patch
+iio-adc-at91-sama5d2_adc-fix-differential-channels-in-triggered-mode.patch
+mmc-rtsx_pci-fix-support-for-speed-modes-that-relies-on-tuning.patch
+mmc-sdhci-of-at91-fix-cd-gpios-for-sama5d2.patch
+staging-rtl8188eu-add-device-id-for-mercusys-mw150us-v2.patch
+staging-greybus-loopback_test-fix-poll-mask-build-breakage.patch
+staging-speakup-fix-get_word-non-space-look-ahead.patch
+intel_th-fix-user-visible-error-codes.patch
+intel_th-pci-add-elkhart-lake-cpu-support.patch
+rtc-max8907-add-missing-select-regmap_irq.patch
+xhci-do-not-open-code-__print_symbolic-in-xhci-trace-events.patch
+btrfs-fix-log-context-list-corruption-after-rename-whiteout-error.patch
+drm-amd-amdgpu-fix-gpr-read-from-debugfs-v2.patch
+drm-lease-fix-warning-in-idr_destroy.patch
+memcg-fix-null-pointer-dereference-in-__mem_cgroup_usage_unregister_event.patch
+mm-slub-be-more-careful-about-the-double-cmpxchg-of-freelist.patch
+mm-slub-prevent-kmalloc_node-crashes-and-memory-leaks.patch
+page-flags-fix-a-crash-at-setpageerror-thp_swap.patch
+x86-mm-split-vmalloc_sync_all.patch
--- /dev/null
+From 8f3675be4bda33adbdc1dd2ab3b6c76a7599a79e Mon Sep 17 00:00:00 2001
+From: Johan Hovold <johan@kernel.org>
+Date: Thu, 12 Mar 2020 12:01:49 +0100
+Subject: staging: greybus: loopback_test: fix poll-mask build breakage
+
+From: Johan Hovold <johan@kernel.org>
+
+commit 8f3675be4bda33adbdc1dd2ab3b6c76a7599a79e upstream.
+
+A scripted conversion from userland POLL* to kernel EPOLL* constants
+mistakingly replaced the poll flags in the loopback_test tool, which
+therefore no longer builds.
+
+Fixes: a9a08845e9ac ("vfs: do bulk POLL* -> EPOLL* replacement")
+Cc: stable <stable@vger.kernel.org> # 4.16
+Signed-off-by: Johan Hovold <johan@kernel.org>
+Link: https://lore.kernel.org/r/20200312110151.22028-2-johan@kernel.org
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/staging/greybus/tools/loopback_test.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/staging/greybus/tools/loopback_test.c
++++ b/drivers/staging/greybus/tools/loopback_test.c
+@@ -663,7 +663,7 @@ static int open_poll_files(struct loopba
+ goto err;
+ }
+ read(t->fds[fds_idx].fd, &dummy, 1);
+- t->fds[fds_idx].events = EPOLLERR|EPOLLPRI;
++ t->fds[fds_idx].events = POLLERR | POLLPRI;
+ t->fds[fds_idx].revents = 0;
+ fds_idx++;
+ }
+@@ -756,7 +756,7 @@ static int wait_for_complete(struct loop
+ }
+
+ for (i = 0; i < t->poll_count; i++) {
+- if (t->fds[i].revents & EPOLLPRI) {
++ if (t->fds[i].revents & POLLPRI) {
+ /* Dummy read to clear the event */
+ read(t->fds[i].fd, &dummy, 1);
+ number_of_events++;
--- /dev/null
+From bb5786b9286c253557a0115bc8d21879e61b7b94 Mon Sep 17 00:00:00 2001
+From: Michael Straube <straube.linux@gmail.com>
+Date: Thu, 12 Mar 2020 10:36:52 +0100
+Subject: staging: rtl8188eu: Add device id for MERCUSYS MW150US v2
+
+From: Michael Straube <straube.linux@gmail.com>
+
+commit bb5786b9286c253557a0115bc8d21879e61b7b94 upstream.
+
+This device was added to the stand-alone driver on github.
+Add it to the staging driver as well.
+
+Link: https://github.com/lwfinger/rtl8188eu/commit/2141f244c3e7
+Signed-off-by: Michael Straube <straube.linux@gmail.com>
+Cc: stable <stable@vger.kernel.org>
+Link: https://lore.kernel.org/r/20200312093652.13918-1-straube.linux@gmail.com
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/staging/rtl8188eu/os_dep/usb_intf.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/staging/rtl8188eu/os_dep/usb_intf.c
++++ b/drivers/staging/rtl8188eu/os_dep/usb_intf.c
+@@ -38,6 +38,7 @@ static const struct usb_device_id rtw_us
+ {USB_DEVICE(0x2001, 0x331B)}, /* D-Link DWA-121 rev B1 */
+ {USB_DEVICE(0x2357, 0x010c)}, /* TP-Link TL-WN722N v2 */
+ {USB_DEVICE(0x2357, 0x0111)}, /* TP-Link TL-WN727N v5.21 */
++ {USB_DEVICE(0x2C4E, 0x0102)}, /* MERCUSYS MW150US v2 */
+ {USB_DEVICE(0x0df6, 0x0076)}, /* Sitecom N150 v2 */
+ {USB_DEVICE(USB_VENDER_ID_REALTEK, 0xffef)}, /* Rosewill RNX-N150NUB */
+ {} /* Terminating entry */
--- /dev/null
+From 9d32c0cde4e2d1343dfb88a67b2ec6397705b32b Mon Sep 17 00:00:00 2001
+From: Samuel Thibault <samuel.thibault@ens-lyon.org>
+Date: Fri, 6 Mar 2020 01:30:47 +0100
+Subject: staging/speakup: fix get_word non-space look-ahead
+
+From: Samuel Thibault <samuel.thibault@ens-lyon.org>
+
+commit 9d32c0cde4e2d1343dfb88a67b2ec6397705b32b upstream.
+
+get_char was erroneously given the address of the pointer to the text
+instead of the address of the text, thus leading to random crashes when
+the user requests speaking a word while the current position is on a space
+character and say_word_ctl is not enabled.
+
+Reported-on: https://github.com/bytefire/speakup/issues/1
+Reported-by: Kirk Reiser <kirk@reisers.ca>
+Reported-by: Janina Sajka <janina@rednote.net>
+Reported-by: Alexandr Epaneshnikov <aarnaarn2@gmail.com>
+Reported-by: Gregory Nowak <greg@gregn.net>
+Reported-by: deedra waters <deedra@the-brannons.com>
+Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
+Tested-by: Alexandr Epaneshnikov <aarnaarn2@gmail.com>
+Tested-by: Gregory Nowak <greg@gregn.net>
+Tested-by: Michael Taboada <michael@michaels.world>
+Cc: stable <stable@vger.kernel.org>
+Link: https://lore.kernel.org/r/20200306003047.thijtmqrnayd3dmw@function
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/staging/speakup/main.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/staging/speakup/main.c
++++ b/drivers/staging/speakup/main.c
+@@ -561,7 +561,7 @@ static u_long get_word(struct vc_data *v
+ return 0;
+ } else if (tmpx < vc->vc_cols - 2 &&
+ (ch == SPACE || ch == 0 || (ch < 0x100 && IS_WDLM(ch))) &&
+- get_char(vc, (u_short *)&tmp_pos + 1, &temp) > SPACE) {
++ get_char(vc, (u_short *)tmp_pos + 1, &temp) > SPACE) {
+ tmp_pos += 2;
+ tmpx++;
+ } else {
--- /dev/null
+From 763802b53a427ed3cbd419dbba255c414fdd9e7c Mon Sep 17 00:00:00 2001
+From: Joerg Roedel <jroedel@suse.de>
+Date: Sat, 21 Mar 2020 18:22:41 -0700
+Subject: x86/mm: split vmalloc_sync_all()
+
+From: Joerg Roedel <jroedel@suse.de>
+
+commit 763802b53a427ed3cbd419dbba255c414fdd9e7c upstream.
+
+Commit 3f8fd02b1bf1 ("mm/vmalloc: Sync unmappings in
+__purge_vmap_area_lazy()") introduced a call to vmalloc_sync_all() in
+the vunmap() code-path. While this change was necessary to maintain
+correctness on x86-32-pae kernels, it also adds additional cycles for
+architectures that don't need it.
+
+Specifically on x86-64 with CONFIG_VMAP_STACK=y some people reported
+severe performance regressions in micro-benchmarks because it now also
+calls the x86-64 implementation of vmalloc_sync_all() on vunmap(). But
+the vmalloc_sync_all() implementation on x86-64 is only needed for newly
+created mappings.
+
+To avoid the unnecessary work on x86-64 and to gain the performance
+back, split up vmalloc_sync_all() into two functions:
+
+ * vmalloc_sync_mappings(), and
+ * vmalloc_sync_unmappings()
+
+Most call-sites to vmalloc_sync_all() only care about new mappings being
+synchronized. The only exception is the new call-site added in the
+above mentioned commit.
+
+Shile Zhang directed us to a report of an 80% regression in reaim
+throughput.
+
+Fixes: 3f8fd02b1bf1 ("mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy()")
+Reported-by: kernel test robot <oliver.sang@intel.com>
+Reported-by: Shile Zhang <shile.zhang@linux.alibaba.com>
+Signed-off-by: Joerg Roedel <jroedel@suse.de>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Tested-by: Borislav Petkov <bp@suse.de>
+Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> [GHES]
+Cc: Dave Hansen <dave.hansen@linux.intel.com>
+Cc: Andy Lutomirski <luto@kernel.org>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Cc: Ingo Molnar <mingo@redhat.com>
+Cc: <stable@vger.kernel.org>
+Link: http://lkml.kernel.org/r/20191009124418.8286-1-joro@8bytes.org
+Link: https://lists.01.org/hyperkitty/list/lkp@lists.01.org/thread/4D3JPPHBNOSPFK2KEPC6KGKS6J25AIDB/
+Link: http://lkml.kernel.org/r/20191113095530.228959-1-shile.zhang@linux.alibaba.com
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ arch/x86/mm/fault.c | 26 ++++++++++++++++++++++++--
+ drivers/acpi/apei/ghes.c | 2 +-
+ include/linux/vmalloc.h | 5 +++--
+ kernel/notifier.c | 2 +-
+ mm/nommu.c | 10 +++++++---
+ mm/vmalloc.c | 11 +++++++----
+ 6 files changed, 43 insertions(+), 13 deletions(-)
+
+--- a/arch/x86/mm/fault.c
++++ b/arch/x86/mm/fault.c
+@@ -273,7 +273,7 @@ static inline pmd_t *vmalloc_sync_one(pg
+ return pmd_k;
+ }
+
+-void vmalloc_sync_all(void)
++static void vmalloc_sync(void)
+ {
+ unsigned long address;
+
+@@ -300,6 +300,16 @@ void vmalloc_sync_all(void)
+ }
+ }
+
++void vmalloc_sync_mappings(void)
++{
++ vmalloc_sync();
++}
++
++void vmalloc_sync_unmappings(void)
++{
++ vmalloc_sync();
++}
++
+ /*
+ * 32-bit:
+ *
+@@ -402,11 +412,23 @@ out:
+
+ #else /* CONFIG_X86_64: */
+
+-void vmalloc_sync_all(void)
++void vmalloc_sync_mappings(void)
+ {
++ /*
++ * 64-bit mappings might allocate new p4d/pud pages
++ * that need to be propagated to all tasks' PGDs.
++ */
+ sync_global_pgds(VMALLOC_START & PGDIR_MASK, VMALLOC_END);
+ }
+
++void vmalloc_sync_unmappings(void)
++{
++ /*
++ * Unmappings never allocate or free p4d/pud pages.
++ * No work is required here.
++ */
++}
++
+ /*
+ * 64-bit:
+ *
+--- a/drivers/acpi/apei/ghes.c
++++ b/drivers/acpi/apei/ghes.c
+@@ -201,7 +201,7 @@ static int ghes_estatus_pool_expand(unsi
+ * New allocation must be visible in all pgd before it can be found by
+ * an NMI allocating from the pool.
+ */
+- vmalloc_sync_all();
++ vmalloc_sync_mappings();
+
+ return gen_pool_add(ghes_estatus_pool, addr, PAGE_ALIGN(len), -1);
+ }
+--- a/include/linux/vmalloc.h
++++ b/include/linux/vmalloc.h
+@@ -107,8 +107,9 @@ extern int remap_vmalloc_range_partial(s
+
+ extern int remap_vmalloc_range(struct vm_area_struct *vma, void *addr,
+ unsigned long pgoff);
+-void vmalloc_sync_all(void);
+-
++void vmalloc_sync_mappings(void);
++void vmalloc_sync_unmappings(void);
++
+ /*
+ * Lowlevel-APIs (not for driver use!)
+ */
+--- a/kernel/notifier.c
++++ b/kernel/notifier.c
+@@ -552,7 +552,7 @@ NOKPROBE_SYMBOL(notify_die);
+
+ int register_die_notifier(struct notifier_block *nb)
+ {
+- vmalloc_sync_all();
++ vmalloc_sync_mappings();
+ return atomic_notifier_chain_register(&die_chain, nb);
+ }
+ EXPORT_SYMBOL_GPL(register_die_notifier);
+--- a/mm/nommu.c
++++ b/mm/nommu.c
+@@ -446,10 +446,14 @@ void vm_unmap_aliases(void)
+ EXPORT_SYMBOL_GPL(vm_unmap_aliases);
+
+ /*
+- * Implement a stub for vmalloc_sync_all() if the architecture chose not to
+- * have one.
++ * Implement a stub for vmalloc_sync_[un]mapping() if the architecture
++ * chose not to have one.
+ */
+-void __weak vmalloc_sync_all(void)
++void __weak vmalloc_sync_mappings(void)
++{
++}
++
++void __weak vmalloc_sync_unmappings(void)
+ {
+ }
+
+--- a/mm/vmalloc.c
++++ b/mm/vmalloc.c
+@@ -1755,7 +1755,7 @@ void *__vmalloc_node_range(unsigned long
+ * First make sure the mappings are removed from all page-tables
+ * before they are freed.
+ */
+- vmalloc_sync_all();
++ vmalloc_sync_unmappings();
+
+ /*
+ * In this function, newly allocated vm_struct has VM_UNINITIALIZED
+@@ -2300,16 +2300,19 @@ int remap_vmalloc_range(struct vm_area_s
+ EXPORT_SYMBOL(remap_vmalloc_range);
+
+ /*
+- * Implement a stub for vmalloc_sync_all() if the architecture chose not to
+- * have one.
++ * Implement stubs for vmalloc_sync_[un]mappings () if the architecture chose
++ * not to have one.
+ *
+ * The purpose of this function is to make sure the vmalloc area
+ * mappings are identical in all page-tables in the system.
+ */
+-void __weak vmalloc_sync_all(void)
++void __weak vmalloc_sync_mappings(void)
+ {
+ }
+
++void __weak vmalloc_sync_unmappings(void)
++{
++}
+
+ static int f(pte_t *pte, pgtable_t table, unsigned long addr, void *data)
+ {
--- /dev/null
+From 045706bff837ee89c13f1ace173db71922c1c40b Mon Sep 17 00:00:00 2001
+From: "Steven Rostedt (VMware)" <rostedt@goodmis.org>
+Date: Fri, 6 Mar 2020 17:08:57 +0200
+Subject: xhci: Do not open code __print_symbolic() in xhci trace events
+
+From: Steven Rostedt (VMware) <rostedt@goodmis.org>
+
+commit 045706bff837ee89c13f1ace173db71922c1c40b upstream.
+
+libtraceevent (used by perf and trace-cmd) failed to parse the
+xhci_urb_dequeue trace event. This is because the user space trace
+event format parsing is not a full C compiler. It can handle some basic
+logic, but is not meant to be able to handle everything C can do.
+
+In cases where a trace event field needs to be converted from a number
+to a string, there's the __print_symbolic() macro that should be used:
+
+ See samples/trace_events/trace-events-sample.h
+
+Some xhci trace events open coded the __print_symbolic() causing the
+user spaces tools to fail to parse it. This has to be replaced with
+__print_symbolic() instead.
+
+CC: stable@vger.kernel.org
+Reported-by: Tzvetomir Stoyanov <tstoyanov@vmware.com>
+Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=206531
+Fixes: 5abdc2e6e12ff ("usb: host: xhci: add urb_enqueue/dequeue/giveback tracers")
+Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
+Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
+Link: https://lore.kernel.org/r/20200306150858.21904-2-mathias.nyman@linux.intel.com
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/usb/host/xhci-trace.h | 23 ++++++-----------------
+ 1 file changed, 6 insertions(+), 17 deletions(-)
+
+--- a/drivers/usb/host/xhci-trace.h
++++ b/drivers/usb/host/xhci-trace.h
+@@ -289,23 +289,12 @@ DECLARE_EVENT_CLASS(xhci_log_urb,
+ ),
+ TP_printk("ep%d%s-%s: urb %p pipe %u slot %d length %d/%d sgs %d/%d stream %d flags %08x",
+ __entry->epnum, __entry->dir_in ? "in" : "out",
+- ({ char *s;
+- switch (__entry->type) {
+- case USB_ENDPOINT_XFER_INT:
+- s = "intr";
+- break;
+- case USB_ENDPOINT_XFER_CONTROL:
+- s = "control";
+- break;
+- case USB_ENDPOINT_XFER_BULK:
+- s = "bulk";
+- break;
+- case USB_ENDPOINT_XFER_ISOC:
+- s = "isoc";
+- break;
+- default:
+- s = "UNKNOWN";
+- } s; }), __entry->urb, __entry->pipe, __entry->slot_id,
++ __print_symbolic(__entry->type,
++ { USB_ENDPOINT_XFER_INT, "intr" },
++ { USB_ENDPOINT_XFER_CONTROL, "control" },
++ { USB_ENDPOINT_XFER_BULK, "bulk" },
++ { USB_ENDPOINT_XFER_ISOC, "isoc" }),
++ __entry->urb, __entry->pipe, __entry->slot_id,
+ __entry->actual, __entry->length, __entry->num_mapped_sgs,
+ __entry->num_sgs, __entry->stream, __entry->flags
+ )
projects / thirdparty / kernel / stable-queue.git / commitdiff
