]> git.ipfire.org Git - thirdparty/kernel/stable-queue.git/commitdiff
6.12-stable patches
authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 7 May 2026 11:34:17 +0000 (13:34 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 7 May 2026 11:34:17 +0000 (13:34 +0200)
added patches:
acpi-cppc-fix-related_cpus-inconsistency-during-cpu-hotplug.patch
acpi-scan-use-acpi_dev_put-in-object-add-error-paths.patch
acpi-video-add-backlight-native-quirk-for-dell-optiplex-7770-aio.patch
acpi-video-force-native-backlight-on-hp-omen-16-8a44.patch
asoc-sof-don-t-allow-pointer-operations-on-unconfigured-streams.patch
fbdev-udlfb-add-vm_ops-to-dlfb_ops_mmap-to-prevent-use-after-free.patch
iommufd-fix-a-race-with-concurrent-allocation-and-unmap.patch
ipmi-add-limits-to-event-and-receive-message-requests.patch
ipmi-check-event-message-buffer-response-for-bad-data.patch
ipmi-si-return-state-to-normal-if-message-allocation-fails.patch
ksmbd-rewrite-stop_sessions-with-restartable-iteration.patch
scsi-target-configfs-bound-snprintf-return-in-tg_pt_gp_members_show.patch
series
spi-rockchip-fix-controller-deregistration.patch

14 files changed:
queue-6.12/acpi-cppc-fix-related_cpus-inconsistency-during-cpu-hotplug.patch [new file with mode: 0644]
queue-6.12/acpi-scan-use-acpi_dev_put-in-object-add-error-paths.patch [new file with mode: 0644]
queue-6.12/acpi-video-add-backlight-native-quirk-for-dell-optiplex-7770-aio.patch [new file with mode: 0644]
queue-6.12/acpi-video-force-native-backlight-on-hp-omen-16-8a44.patch [new file with mode: 0644]
queue-6.12/asoc-sof-don-t-allow-pointer-operations-on-unconfigured-streams.patch [new file with mode: 0644]
queue-6.12/fbdev-udlfb-add-vm_ops-to-dlfb_ops_mmap-to-prevent-use-after-free.patch [new file with mode: 0644]
queue-6.12/iommufd-fix-a-race-with-concurrent-allocation-and-unmap.patch [new file with mode: 0644]
queue-6.12/ipmi-add-limits-to-event-and-receive-message-requests.patch [new file with mode: 0644]
queue-6.12/ipmi-check-event-message-buffer-response-for-bad-data.patch [new file with mode: 0644]
queue-6.12/ipmi-si-return-state-to-normal-if-message-allocation-fails.patch [new file with mode: 0644]
queue-6.12/ksmbd-rewrite-stop_sessions-with-restartable-iteration.patch [new file with mode: 0644]
queue-6.12/scsi-target-configfs-bound-snprintf-return-in-tg_pt_gp_members_show.patch [new file with mode: 0644]
queue-6.12/series [new file with mode: 0644]
queue-6.12/spi-rockchip-fix-controller-deregistration.patch [new file with mode: 0644]

diff --git a/queue-6.12/acpi-cppc-fix-related_cpus-inconsistency-during-cpu-hotplug.patch b/queue-6.12/acpi-cppc-fix-related_cpus-inconsistency-during-cpu-hotplug.patch
new file mode 100644 (file)
index 0000000..a5bd916
--- /dev/null
@@ -0,0 +1,140 @@
+From 75141a770f4f8225d316f6c7e146723a32e9720e Mon Sep 17 00:00:00 2001
+From: Jinjie Ruan <ruanjinjie@huawei.com>
+Date: Fri, 17 Apr 2026 12:01:12 +0800
+Subject: ACPI: CPPC: Fix related_cpus inconsistency during CPU hotplug
+
+From: Jinjie Ruan <ruanjinjie@huawei.com>
+
+commit 75141a770f4f8225d316f6c7e146723a32e9720e upstream.
+
+When concurrently bringing up and down two SMT threads of a physical
+core, many warning call traces occur as below:
+
+The issue timeline is as follows:
+
+ 1. When the system starts,
+    cpufreq: CPU: 220, policy->related_cpus: 220-221, policy->cpus: 220-221
+
+ 2. Offline CPU 220 and CPU 221.
+
+ 3. Online CPU 220
+    - CPU 221 is now offline, as acpi_get_psd_map() use
+      for_each_online_cpu(), so the cpu_data->shared_cpu_map,
+      policy->cpus, and related_cpus has only CPU 220.
+
+    cpufreq: CPU: 220, policy->related_cpus: 220, policy->cpus: 220
+
+ 4. Offline CPU 220
+
+ 5. Online CPU 221, the below call trace occurs:
+    - Since CPU 220 and CPU 221 share one policy, and
+      policy->related_cpus = 220 after step 3, so CPU 221
+      is not in policy->related_cpus but
+      per_cpu(cpufreq_cpu_data, cpu221) is not NULL.
+
+After reverting commit 56eb0c0ed345 ("ACPI: CPPC: Fix remaining
+for_each_possible_cpu() to use online CPUs"), the issue disappeared.
+
+The _PSD (P-State Dependency) defines the hardware-level dependency of
+frequency control across CPU cores. Since this relationship is a physical
+attribute of the hardware topology, it remains constant regardless of the
+online or offline status of the CPUs.
+
+Using for_each_online_cpu() in acpi_get_psd_map() is problematic. If a
+CPU is offline, it will be excluded from the shared_cpu_map.
+Consequently, if that CPU is brought online later, the kernel will fail
+to recognize it as part of any shared frequency domain.
+
+Switch back to for_each_possible_cpu() to ensure that all cores defined
+in the ACPI tables are correctly mapped into their respective performance
+domains from the start. This aligns with the logic of policy->related_cpus,
+which must encompass all potentially available cores in the domain to
+prevent logic gaps during CPU hotplug operations.
+
+To resolve the original issue regarding the "nosmt" or "nosmt=force"
+boot parameter, as send_pcc_cmd() function already does if (!desc)
+continue, so reverting that loop back to for_each_possible_cpu() is ok,
+only need to change the match_cpc_ptr NULL case in acpi_get_psd_map() to
+continue as Sean suggested.
+
+How to reproduce, on arm64 machine with SMT support which use acpi cppc
+cpufreq driver:
+
+       bash test.sh 220 & bash test.sh 221 &
+
+       The test.sh is as below:
+               while true
+                       do
+                       echo 0 > /sys/devices/system/cpu/cpu${1}/online
+                       sleep 0.5
+                       cat /sys/devices/system/cpu/cpu${1}/cpufreq/related_cpus
+                       echo 1 >  /sys/devices/system/cpu/cpu${1}/online
+                       cat /sys/devices/system/cpu/cpu${1}/cpufreq/related_cpus
+               done
+
+       CPU: 221 PID: 1119 Comm: cpuhp/221 Kdump: loaded Not tainted 6.6.0debug+ #5
+       Hardware name: To be filled by O.E.M. S920X20/BC83AMDA01-7270Z, BIOS 20.39 09/04/2024
+       pstate: a1400009 (NzCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
+       pc : cpufreq_online+0x8ac/0xa90
+       lr : cpuhp_cpufreq_online+0x18/0x30
+       sp : ffff80008739bce0
+       x29: ffff80008739bce0 x28: 0000000000000000 x27: ffff28400ca32200
+       x26: 0000000000000000 x25: 0000000000000003 x24: ffffd483503ff000
+       x23: ffffd483504051a0 x22: ffffd48350024a00 x21: 00000000000000dd
+       x20: 000000000000001d x19: ffff28400ca32000 x18: 0000000000000000
+       x17: 0000000000000020 x16: ffffd4834e6a3fc8 x15: 0000000000000020
+       x14: 0000000000000008 x13: 0000000000000001 x12: 00000000ffffffff
+       x11: 0000000000000040 x10: ffffd48350430728 x9 : ffffd4834f087c78
+       x8 : 0000000000000001 x7 : ffff2840092bdf00 x6 : ffffd483504264f0
+       x5 : ffffd48350405000 x4 : ffff283f7f95cc60 x3 : 0000000000000000
+       x2 : ffff53bc2f94b000 x1 : 00000000000000dd x0 : 0000000000000000
+       Call trace:
+        cpufreq_online+0x8ac/0xa90
+        cpuhp_cpufreq_online+0x18/0x30
+        cpuhp_invoke_callback+0x128/0x580
+        cpuhp_thread_fun+0x110/0x1b0
+        smpboot_thread_fn+0x140/0x190
+        kthread+0xec/0x100
+        ret_from_fork+0x10/0x20
+       ---[ end trace 0000000000000000 ]---
+
+Cc: All applicable <stable@vger.kernel.org>
+Fixes: 56eb0c0ed345 ("ACPI: CPPC: Fix remaining for_each_possible_cpu() to use online CPUs")
+Co-developed-by: Sean Kelley <skelley@nvidia.com>
+Signed-off-by: Sean Kelley <skelley@nvidia.com>
+Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
+[ rjw: Changelog edits ]
+Link: https://patch.msgid.link/20260417040112.3727756-1-ruanjinjie@huawei.com
+Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/acpi/cppc_acpi.c |    6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+--- a/drivers/acpi/cppc_acpi.c
++++ b/drivers/acpi/cppc_acpi.c
+@@ -349,7 +349,7 @@ static int send_pcc_cmd(int pcc_ss_id, u
+ end:
+       if (cmd == CMD_WRITE) {
+               if (unlikely(ret)) {
+-                      for_each_online_cpu(i) {
++                      for_each_possible_cpu(i) {
+                               struct cpc_desc *desc = per_cpu(cpc_desc_ptr, i);
+                               if (!desc)
+@@ -511,13 +511,13 @@ int acpi_get_psd_map(unsigned int cpu, s
+       else if (pdomain->coord_type == DOMAIN_COORD_TYPE_SW_ANY)
+               cpu_data->shared_type = CPUFREQ_SHARED_TYPE_ANY;
+-      for_each_online_cpu(i) {
++      for_each_possible_cpu(i) {
+               if (i == cpu)
+                       continue;
+               match_cpc_ptr = per_cpu(cpc_desc_ptr, i);
+               if (!match_cpc_ptr)
+-                      goto err_fault;
++                      continue;
+               match_pdomain = &(match_cpc_ptr->domain_info);
+               if (match_pdomain->domain != pdomain->domain)
diff --git a/queue-6.12/acpi-scan-use-acpi_dev_put-in-object-add-error-paths.patch b/queue-6.12/acpi-scan-use-acpi_dev_put-in-object-add-error-paths.patch
new file mode 100644 (file)
index 0000000..7227952
--- /dev/null
@@ -0,0 +1,61 @@
+From 9c0acc169ac71535477caedea8315f7041c5f07c Mon Sep 17 00:00:00 2001
+From: Guangshuo Li <lgs201920130244@gmail.com>
+Date: Mon, 13 Apr 2026 21:53:43 +0800
+Subject: ACPI: scan: Use acpi_dev_put() in object add error paths
+
+From: Guangshuo Li <lgs201920130244@gmail.com>
+
+commit 9c0acc169ac71535477caedea8315f7041c5f07c upstream.
+
+After acpi_init_device_object(), the lifetime of struct acpi_device is
+managed by the driver core through reference counting.
+
+Both acpi_add_power_resource() and acpi_add_single_object() call
+acpi_init_device_object() and then invoke acpi_device_add(). If that
+fails, their error paths call the release callback directly instead of
+dropping the device reference through acpi_dev_put().
+
+This bypasses the normal device lifetime rules and frees the object
+without releasing the reference acquired by device_initialize(), which
+may lead to a refcount leak.
+
+The issue was identified by a static analysis tool I developed and
+confirmed by manual review.
+
+Fix both error paths by using acpi_dev_put() and let the release
+callback handle the final cleanup.
+
+Fixes: 781d737c7466 ("ACPI: Drop power resources driver")
+Fixes: 718fb0de8ff88 ("ACPI: fix NULL bug for HID/UID string")
+Cc: All applicable <stable@vger.kernel.org>
+Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
+Link: https://patch.msgid.link/20260413135343.2884481-1-lgs201920130244@gmail.com
+Signed-off-by: Rafael J. Wysocki <rjw@rjwysocki.net>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/acpi/power.c |    2 +-
+ drivers/acpi/scan.c  |    2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/acpi/power.c
++++ b/drivers/acpi/power.c
+@@ -986,7 +986,7 @@ struct acpi_device *acpi_add_power_resou
+       return device;
+  err:
+-      acpi_release_power_resource(&device->dev);
++      acpi_dev_put(device);
+       return NULL;
+ }
+--- a/drivers/acpi/scan.c
++++ b/drivers/acpi/scan.c
+@@ -1914,7 +1914,7 @@ static int acpi_add_single_object(struct
+               result = acpi_device_add(device);
+       if (result) {
+-              acpi_device_release(&device->dev);
++              acpi_dev_put(device);
+               return result;
+       }
diff --git a/queue-6.12/acpi-video-add-backlight-native-quirk-for-dell-optiplex-7770-aio.patch b/queue-6.12/acpi-video-add-backlight-native-quirk-for-dell-optiplex-7770-aio.patch
new file mode 100644 (file)
index 0000000..83c1ff7
--- /dev/null
@@ -0,0 +1,49 @@
+From ad7997f5a01af6f711fe6b6a2df578b964109d49 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Jan=20Sch=C3=A4r?= <jan@jschaer.ch>
+Date: Sat, 11 Apr 2026 11:26:06 +0200
+Subject: ACPI: video: Add backlight=native quirk for Dell OptiPlex 7770 AIO
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+From: Jan Schär <jan@jschaer.ch>
+
+commit ad7997f5a01af6f711fe6b6a2df578b964109d49 upstream.
+
+The Dell OptiPlex 7770 AIO needs the same quirk as the 7760 AIO. The
+backlight can be controlled with the native controller, intel_backlight,
+but not with dell_uart_backlight.
+
+I dumped the DSDT using acpidump, acpixtract and iasl, and confirmed
+that it contains the DELL0501 device. When loading the
+dell_uart_backlight driver with `rmmod dell_uart_backlight`, `modprobe
+dell_uart_backlight dyndbg`, it reports "Firmware version: GL_Re_V18".
+
+Fixes: cd8e468efb4f ("ACPI: video: Add Dell UART backlight controller detection")
+Cc: All applicable <stable@vger.kernel.org>
+Signed-off-by: Jan Schär <jan@jschaer.ch>
+Reviewed-by: Hans de Goede <johannes.goede@oss.qualcomm.com>
+Link: https://patch.msgid.link/20260411092606.47925-1-jan@jschaer.ch
+Signed-off-by: Rafael J. Wysocki <rjw@rjwysocki.net>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/acpi/video_detect.c |    8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+--- a/drivers/acpi/video_detect.c
++++ b/drivers/acpi/video_detect.c
+@@ -878,6 +878,14 @@ static const struct dmi_system_id video_
+               DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 7760 AIO"),
+               },
+       },
++      {
++       .callback = video_detect_force_native,
++       /* Dell OptiPlex 7770 AIO */
++       .matches = {
++              DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
++              DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 7770 AIO"),
++              },
++      },
+       /*
+        * Models which have nvidia-ec-wmi support, but should not use it.
diff --git a/queue-6.12/acpi-video-force-native-backlight-on-hp-omen-16-8a44.patch b/queue-6.12/acpi-video-force-native-backlight-on-hp-omen-16-8a44.patch
new file mode 100644 (file)
index 0000000..c2eaea7
--- /dev/null
@@ -0,0 +1,49 @@
+From 4b506ea5351a1f5937ac632a4a5c35f6f796cc41 Mon Sep 17 00:00:00 2001
+From: Shivam Kalra <shivamkalra98@zohomail.in>
+Date: Sun, 26 Apr 2026 19:38:41 +0530
+Subject: ACPI: video: force native backlight on HP OMEN 16 (8A44)
+
+From: Shivam Kalra <shivamkalra98@zohomail.in>
+
+commit 4b506ea5351a1f5937ac632a4a5c35f6f796cc41 upstream.
+
+The HP OMEN 16 Gaming Laptop (board name 8A44) has a mux-less hybrid
+GPU configuration with AMD Rembrandt (Radeon 680M) and NVIDIA GA104
+(RTX 3070 Ti). The internal eDP panel is wired to the AMD iGPU.
+
+When Nouveau loads without GSP firmware, the ACPI video backlight
+device (acpi_video0) gets registered alongside the native AMD
+backlight (amdgpu_bl2). In this state, writes to amdgpu_bl2 update
+the software brightness value but fail to change the physical panel
+brightness.
+
+Force native backlight to prevent acpi_video0 from registering.
+Confirmed that booting with acpi_backlight=native resolves the
+issue.
+
+Cc: All applicable <stable@vger.kernel.org>
+Signed-off-by: Shivam Kalra <shivamkalra98@zohomail.in>
+Link: https://patch.msgid.link/20260426-omen-16-backlight-fix-v1-1-62364f268ea6@zohomail.in
+Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/acpi/video_detect.c |    8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+--- a/drivers/acpi/video_detect.c
++++ b/drivers/acpi/video_detect.c
+@@ -907,6 +907,14 @@ static const struct dmi_system_id video_
+               DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 15 3535"),
+               },
+       },
++      {
++       .callback = video_detect_force_native,
++       /* HP OMEN Gaming Laptop 16-n0xxx */
++       .matches = {
++              DMI_MATCH(DMI_SYS_VENDOR, "HP"),
++              DMI_MATCH(DMI_PRODUCT_NAME, "OMEN by HP Gaming Laptop 16-n0xxx"),
++              },
++      },
+       /*
+        * x86 android tablets which directly control the backlight through
diff --git a/queue-6.12/asoc-sof-don-t-allow-pointer-operations-on-unconfigured-streams.patch b/queue-6.12/asoc-sof-don-t-allow-pointer-operations-on-unconfigured-streams.patch
new file mode 100644 (file)
index 0000000..98844b8
--- /dev/null
@@ -0,0 +1,37 @@
+From c5b6285aae050ff1c3ea824ca3d88ac4be1e69c8 Mon Sep 17 00:00:00 2001
+From: Mark Brown <broonie@kernel.org>
+Date: Thu, 26 Mar 2026 14:52:41 +0000
+Subject: ASoC: SOF: Don't allow pointer operations on unconfigured streams
+
+From: Mark Brown <broonie@kernel.org>
+
+commit c5b6285aae050ff1c3ea824ca3d88ac4be1e69c8 upstream.
+
+When reporting the pointer for a compressed stream we report the current
+I/O frame position by dividing the position by the number of channels
+multiplied by the number of container bytes. These values default to 0 and
+are only configured as part of setting the stream parameters so this allows
+a divide by zero to be configured. Validate that they are non zero,
+returning an error if not
+
+Fixes: c1a731c71359 ("ASoC: SOF: compress: Add support for computing timestamps")
+Cc: stable@vger.kernel.org
+Link: https://patch.msgid.link/20260326-asoc-compress-tstamp-params-v1-1-3dc735b3d599@kernel.org
+Signed-off-by: Mark Brown <broonie@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ sound/soc/sof/compress.c |    3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/sound/soc/sof/compress.c
++++ b/sound/soc/sof/compress.c
+@@ -371,6 +371,9 @@ static int sof_compr_pointer(struct snd_
+       if (!spcm)
+               return -EINVAL;
++      if (!sstream->channels || !sstream->sample_container_bytes)
++              return -EBUSY;
++
+       tstamp->sampling_rate = sstream->sampling_rate;
+       tstamp->copied_total = sstream->copied_total;
+       tstamp->pcm_io_frames = div_u64(spcm->stream[cstream->direction].posn.dai_posn,
diff --git a/queue-6.12/fbdev-udlfb-add-vm_ops-to-dlfb_ops_mmap-to-prevent-use-after-free.patch b/queue-6.12/fbdev-udlfb-add-vm_ops-to-dlfb_ops_mmap-to-prevent-use-after-free.patch
new file mode 100644 (file)
index 0000000..560e106
--- /dev/null
@@ -0,0 +1,111 @@
+From 8de779dc40d35d39fa07387b6f921eb11df0f511 Mon Sep 17 00:00:00 2001
+From: Rajat Gupta <rajgupt@qti.qualcomm.com>
+Date: Sun, 3 May 2026 20:51:10 -0700
+Subject: fbdev: udlfb: add vm_ops to dlfb_ops_mmap to prevent use-after-free
+
+From: Rajat Gupta <rajgupt@qti.qualcomm.com>
+
+commit 8de779dc40d35d39fa07387b6f921eb11df0f511 upstream.
+
+dlfb_ops_mmap() uses remap_pfn_range() to map vmalloc framebuffer pages
+to userspace but sets no vm_ops on the VMA. This means the kernel cannot
+track active mmaps. When dlfb_realloc_framebuffer() replaces the backing
+buffer via FBIOPUT_VSCREENINFO, existing mmap PTEs are not invalidated.
+On USB disconnect, dlfb_ops_destroy() calls vfree() on the old pages
+while userspace PTEs still reference them, resulting in a use-after-free:
+the process retains read/write access to freed kernel pages.
+
+Add vm_operations_struct with open/close callbacks that maintain an
+atomic mmap_count on struct dlfb_data. In dlfb_realloc_framebuffer(),
+check mmap_count and return -EBUSY if the buffer is currently mapped,
+preventing buffer replacement while userspace holds stale PTEs.
+
+Tested with PoC using dummy_hcd + raw_gadget USB device emulation.
+
+Signed-off-by: Rajat Gupta <rajgupt@qti.qualcomm.com>
+Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Cc: stable@vger.kernel.org
+Signed-off-by: Helge Deller <deller@gmx.de>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/video/fbdev/udlfb.c |   31 ++++++++++++++++++++++++++++++-
+ include/video/udlfb.h       |    1 +
+ 2 files changed, 31 insertions(+), 1 deletion(-)
+
+--- a/drivers/video/fbdev/udlfb.c
++++ b/drivers/video/fbdev/udlfb.c
+@@ -321,12 +321,32 @@ static int dlfb_set_video_mode(struct dl
+       return retval;
+ }
++static void dlfb_vm_open(struct vm_area_struct *vma)
++{
++      struct dlfb_data *dlfb = vma->vm_private_data;
++
++      atomic_inc(&dlfb->mmap_count);
++}
++
++static void dlfb_vm_close(struct vm_area_struct *vma)
++{
++      struct dlfb_data *dlfb = vma->vm_private_data;
++
++      atomic_dec(&dlfb->mmap_count);
++}
++
++static const struct vm_operations_struct dlfb_vm_ops = {
++      .open  = dlfb_vm_open,
++      .close = dlfb_vm_close,
++};
++
+ static int dlfb_ops_mmap(struct fb_info *info, struct vm_area_struct *vma)
+ {
+       unsigned long start = vma->vm_start;
+       unsigned long size = vma->vm_end - vma->vm_start;
+       unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
+       unsigned long page, pos;
++      struct dlfb_data *dlfb = info->par;
+       if (info->fbdefio)
+               return fb_deferred_io_mmap(info, vma);
+@@ -358,6 +378,9 @@ static int dlfb_ops_mmap(struct fb_info
+                       size = 0;
+       }
++      vma->vm_ops = &dlfb_vm_ops;
++      vma->vm_private_data = dlfb;
++      atomic_inc(&dlfb->mmap_count);
+       return 0;
+ }
+@@ -1176,7 +1199,6 @@ static void dlfb_deferred_vfree(struct d
+ /*
+  * Assumes &info->lock held by caller
+- * Assumes no active clients have framebuffer open
+  */
+ static int dlfb_realloc_framebuffer(struct dlfb_data *dlfb, struct fb_info *info, u32 new_len)
+ {
+@@ -1188,6 +1210,13 @@ static int dlfb_realloc_framebuffer(stru
+       new_len = PAGE_ALIGN(new_len);
+       if (new_len > old_len) {
++              if (atomic_read(&dlfb->mmap_count) > 0) {
++                      dev_warn(info->dev,
++                              "refusing realloc: %d active mmaps\n",
++                              atomic_read(&dlfb->mmap_count));
++                      return -EBUSY;
++              }
++
+               /*
+                * Alloc system memory for virtual framebuffer
+                */
+--- a/include/video/udlfb.h
++++ b/include/video/udlfb.h
+@@ -56,6 +56,7 @@ struct dlfb_data {
+       spinlock_t damage_lock;
+       struct work_struct damage_work;
+       struct fb_ops ops;
++      atomic_t mmap_count;
+       /* blit-only rendering path metrics, exposed through sysfs */
+       atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */
+       atomic_t bytes_identical; /* saved effort with backbuffer comparison */
diff --git a/queue-6.12/iommufd-fix-a-race-with-concurrent-allocation-and-unmap.patch b/queue-6.12/iommufd-fix-a-race-with-concurrent-allocation-and-unmap.patch
new file mode 100644 (file)
index 0000000..028a4c9
--- /dev/null
@@ -0,0 +1,54 @@
+From 8602018b1f17fbdaa5e5d79f4c8603ad20640c12 Mon Sep 17 00:00:00 2001
+From: Sina Hassani <sina@openai.com>
+Date: Fri, 10 Apr 2026 11:32:44 -0700
+Subject: iommufd: Fix a race with concurrent allocation and unmap
+
+From: Sina Hassani <sina@openai.com>
+
+commit 8602018b1f17fbdaa5e5d79f4c8603ad20640c12 upstream.
+
+iopt_unmap_iova_range() releases the lock on iova_rwsem inside the loop
+body when getting to the more expensive unmap operations. This is fine on
+its own, except the loop condition is based on the first area that matches
+the unmap address range. If a concurrent call to map picks an area that
+was unmapped in previous iterations, the loop mistakenly tries to unmap
+it.
+
+This is reproducible by having one userspace thread map buffers and pass
+them to another thread that unmaps them. The problem manifests as EBUSY
+errors with single page mappings.
+
+Fix this by advancing the start pointer after unmapping an area. This
+ensures each iteration only examines the IOVA range that remains mapped,
+which is guaranteed not to have overlaps.
+
+Cc: stable@vger.kernel.org
+Fixes: 51fe6141f0f6 ("iommufd: Data structure to provide IOVA to PFN mapping")
+Link: https://patch.msgid.link/r/CAAJpGJSR4r_ds1JOjmkqHtsBPyxu8GntoeW08Sk5RNQPmgi+tg@mail.gmail.com
+Signed-off-by: Sina Hassani <sina@openai.com>
+Reviewed-by: Kevin Tian <kevin.tian@intel.com>
+Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/iommu/iommufd/io_pagetable.c |   10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+--- a/drivers/iommu/iommufd/io_pagetable.c
++++ b/drivers/iommu/iommufd/io_pagetable.c
+@@ -724,6 +724,16 @@ again:
+               unmapped_bytes += area_last - area_first + 1;
+               down_write(&iopt->iova_rwsem);
++
++              /*
++               * After releasing the iova_rwsem concurrent allocation could
++               * place new areas at IOVAs we have already unmapped. Keep
++               * moving the start of the search forward to ignore the area
++               * already unmapped.
++               */
++              if (area_last >= last)
++                      break;
++              start = area_last + 1;
+       }
+ out_unlock_iova:
diff --git a/queue-6.12/ipmi-add-limits-to-event-and-receive-message-requests.patch b/queue-6.12/ipmi-add-limits-to-event-and-receive-message-requests.patch
new file mode 100644 (file)
index 0000000..c19fe2e
--- /dev/null
@@ -0,0 +1,209 @@
+From c4cca236968683eb0d59abfb12d5c7e4d8514227 Mon Sep 17 00:00:00 2001
+From: Corey Minyard <corey@minyard.net>
+Date: Mon, 20 Apr 2026 12:39:51 -0500
+Subject: ipmi: Add limits to event and receive message requests
+
+From: Corey Minyard <corey@minyard.net>
+
+commit c4cca236968683eb0d59abfb12d5c7e4d8514227 upstream.
+
+The driver would just fetch events and receive messages until the
+BMC said it was done.  To avoid issues with BMCs that never say they are
+done, add a limit of 10 fetches at a time.
+
+In addition, an si interface has an attn state it can return from the
+hardware which is supposed to cause a flag fetch to see if the driver
+needs to fetch events or message or a few other things.  If the attn
+bit gets stuck, it's a similar problem.  So allow messages in between
+flag fetches so the driver itself doesn't get stuck.
+
+This is a more general fix than the previous fix for the specific bad
+BMC, but should fix the more general issue of a BMC that won't stop
+saying it has data.
+
+This has been there from the beginning of the driver.  It's not a bug
+per-se, but it is accounting for bugs in BMCs.
+
+Reported-by: Matt Fleming <mfleming@cloudflare.com>
+Closes: https://lore.kernel.org/lkml/20260415115930.3428942-1-matt@readmodwrite.com/
+Fixes: <1da177e4c3f4> ("Linux-2.6.12-rc2")
+Cc: stable@vger.kernel.org
+Signed-off-by: Corey Minyard <corey@minyard.net>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/char/ipmi/ipmi_si_intf.c |   54 +++++++++++++++++++++++++++++++--------
+ drivers/char/ipmi/ipmi_ssif.c    |   23 +++++++++++++++-
+ 2 files changed, 64 insertions(+), 13 deletions(-)
+
+--- a/drivers/char/ipmi/ipmi_si_intf.c
++++ b/drivers/char/ipmi/ipmi_si_intf.c
+@@ -162,6 +162,10 @@ struct smi_info {
+                            OEM2_DATA_AVAIL)
+       unsigned char       msg_flags;
++      /* When requesting events and messages, don't do it forever. */
++      unsigned int        num_requests_in_a_row;
++      bool                last_was_flag_fetch;
++
+       /* Does the BMC have an event buffer? */
+       bool                has_event_buffer;
+@@ -394,7 +398,10 @@ static void start_getting_msg_queue(stru
+       start_new_msg(smi_info, smi_info->curr_msg->data,
+                     smi_info->curr_msg->data_size);
+-      smi_info->si_state = SI_GETTING_MESSAGES;
++      if (smi_info->si_state != SI_GETTING_MESSAGES) {
++              smi_info->num_requests_in_a_row = 0;
++              smi_info->si_state = SI_GETTING_MESSAGES;
++      }
+ }
+ static void start_getting_events(struct smi_info *smi_info)
+@@ -405,7 +412,10 @@ static void start_getting_events(struct
+       start_new_msg(smi_info, smi_info->curr_msg->data,
+                     smi_info->curr_msg->data_size);
+-      smi_info->si_state = SI_GETTING_EVENTS;
++      if (smi_info->si_state != SI_GETTING_EVENTS) {
++              smi_info->num_requests_in_a_row = 0;
++              smi_info->si_state = SI_GETTING_EVENTS;
++      }
+ }
+ /*
+@@ -579,6 +589,7 @@ static void handle_transaction_done(stru
+                       smi_info->si_state = SI_NORMAL;
+               } else {
+                       smi_info->msg_flags = msg[3];
++                      smi_info->last_was_flag_fetch = true;
+                       handle_flags(smi_info);
+               }
+               break;
+@@ -624,6 +635,11 @@ static void handle_transaction_done(stru
+               } else {
+                       smi_inc_stat(smi_info, events);
++                      smi_info->num_requests_in_a_row++;
++                      if (smi_info->num_requests_in_a_row > 10)
++                              /* Stop if we do this too many times. */
++                              smi_info->msg_flags &= ~EVENT_MSG_BUFFER_FULL;
++
+                       /*
+                        * Do this before we deliver the message
+                        * because delivering the message releases the
+@@ -662,6 +678,11 @@ static void handle_transaction_done(stru
+               } else {
+                       smi_inc_stat(smi_info, incoming_messages);
++                      smi_info->num_requests_in_a_row++;
++                      if (smi_info->num_requests_in_a_row > 10)
++                              /* Stop if we do this too many times. */
++                              smi_info->msg_flags &= ~RECEIVE_MSG_AVAIL;
++
+                       /*
+                        * Do this before we deliver the message
+                        * because delivering the message releases the
+@@ -790,6 +811,26 @@ restart:
+       }
+       /*
++       * If we are currently idle, or if the last thing that was
++       * done was a flag fetch and there is a message pending, try
++       * to start the next message.
++       *
++       * We do the waiting message check to avoid a stuck flag
++       * completely wedging the driver.  Let a message through
++       * in between flag operations if that happens.
++       */
++      if (si_sm_result == SI_SM_IDLE ||
++          (si_sm_result == SI_SM_ATTN && smi_info->waiting_msg &&
++           smi_info->last_was_flag_fetch)) {
++              smi_info->last_was_flag_fetch = false;
++              smi_inc_stat(smi_info, idles);
++
++              si_sm_result = start_next_msg(smi_info);
++              if (si_sm_result != SI_SM_IDLE)
++                      goto restart;
++      }
++
++      /*
+        * We prefer handling attn over new messages.  But don't do
+        * this if there is not yet an upper layer to handle anything.
+        */
+@@ -822,15 +863,6 @@ restart:
+               }
+       }
+-      /* If we are currently idle, try to start the next message. */
+-      if (si_sm_result == SI_SM_IDLE) {
+-              smi_inc_stat(smi_info, idles);
+-
+-              si_sm_result = start_next_msg(smi_info);
+-              if (si_sm_result != SI_SM_IDLE)
+-                      goto restart;
+-      }
+-
+       if ((si_sm_result == SI_SM_IDLE)
+           && (atomic_read(&smi_info->req_events))) {
+               /*
+--- a/drivers/char/ipmi/ipmi_ssif.c
++++ b/drivers/char/ipmi/ipmi_ssif.c
+@@ -225,6 +225,9 @@ struct ssif_info {
+       bool                has_event_buffer;
+       bool                supports_alert;
++      /* When requesting events and messages, don't do it forever. */
++      unsigned int        num_requests_in_a_row;
++
+       /*
+        * Used to tell what we should do with alerts.  If we are
+        * waiting on a response, read the data immediately.
+@@ -413,7 +416,10 @@ static void start_event_fetch(struct ssi
+       }
+       ssif_info->curr_msg = msg;
+-      ssif_info->ssif_state = SSIF_GETTING_EVENTS;
++      if (ssif_info->ssif_state != SSIF_GETTING_EVENTS) {
++              ssif_info->num_requests_in_a_row = 0;
++              ssif_info->ssif_state = SSIF_GETTING_EVENTS;
++      }
+       ipmi_ssif_unlock_cond(ssif_info, flags);
+       msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2);
+@@ -436,7 +442,10 @@ static void start_recv_msg_fetch(struct
+       }
+       ssif_info->curr_msg = msg;
+-      ssif_info->ssif_state = SSIF_GETTING_MESSAGES;
++      if (ssif_info->ssif_state != SSIF_GETTING_MESSAGES) {
++              ssif_info->num_requests_in_a_row = 0;
++              ssif_info->ssif_state = SSIF_GETTING_MESSAGES;
++      }
+       ipmi_ssif_unlock_cond(ssif_info, flags);
+       msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2);
+@@ -843,6 +852,11 @@ static void msg_done_handler(struct ssif
+                       ssif_info->msg_flags &= ~EVENT_MSG_BUFFER_FULL;
+                       handle_flags(ssif_info, flags);
+               } else {
++                      ssif_info->num_requests_in_a_row++;
++                      if (ssif_info->num_requests_in_a_row > 10)
++                              /* Stop if we do this too many times. */
++                              ssif_info->msg_flags &= ~EVENT_MSG_BUFFER_FULL;
++
+                       handle_flags(ssif_info, flags);
+                       ssif_inc_stat(ssif_info, events);
+                       deliver_recv_msg(ssif_info, msg);
+@@ -876,6 +890,11 @@ static void msg_done_handler(struct ssif
+                       ssif_info->msg_flags &= ~RECEIVE_MSG_AVAIL;
+                       handle_flags(ssif_info, flags);
+               } else {
++                      ssif_info->num_requests_in_a_row++;
++                      if (ssif_info->num_requests_in_a_row > 10)
++                              /* Stop if we do this too many times. */
++                              ssif_info->msg_flags &= ~RECEIVE_MSG_AVAIL;
++
+                       ssif_inc_stat(ssif_info, incoming_messages);
+                       handle_flags(ssif_info, flags);
+                       deliver_recv_msg(ssif_info, msg);
diff --git a/queue-6.12/ipmi-check-event-message-buffer-response-for-bad-data.patch b/queue-6.12/ipmi-check-event-message-buffer-response-for-bad-data.patch
new file mode 100644 (file)
index 0000000..196fb87
--- /dev/null
@@ -0,0 +1,44 @@
+From 36920f30e78e69df01f9691c470b6f3ba8aebf98 Mon Sep 17 00:00:00 2001
+From: Corey Minyard <corey@minyard.net>
+Date: Mon, 20 Apr 2026 12:50:09 -0500
+Subject: ipmi: Check event message buffer response for bad data
+
+From: Corey Minyard <corey@minyard.net>
+
+commit 36920f30e78e69df01f9691c470b6f3ba8aebf98 upstream.
+
+The event message buffer response data size got checked later when
+processing, but check it right after the response comes back.  It
+appears some BMCs may return an empty message instead of an error
+when fetching events.
+
+There are apparently some new BMCs that make this error, so we need to
+compensate.
+
+Reported-by: Matt Fleming <mfleming@cloudflare.com>
+Closes: https://lore.kernel.org/lkml/20260415115930.3428942-1-matt@readmodwrite.com/
+Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
+Cc: <stable@vger.kernel.org>
+Signed-off-by: Corey Minyard <corey@minyard.net>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/char/ipmi/ipmi_si_intf.c |    8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+--- a/drivers/char/ipmi/ipmi_si_intf.c
++++ b/drivers/char/ipmi/ipmi_si_intf.c
+@@ -625,7 +625,13 @@ static void handle_transaction_done(stru
+                */
+               msg = smi_info->curr_msg;
+               smi_info->curr_msg = NULL;
+-              if (msg->rsp[2] != 0) {
++              /*
++               * It appears some BMCs, with no event data, return no
++               * data in the message and not a 0x80 error as the
++               * spec says they should.  Shut down processing if
++               * the data is not the right length.
++               */
++              if (msg->rsp[2] != 0 || msg->rsp_size != 19) {
+                       /* Error getting event, probably done. */
+                       msg->done(msg);
diff --git a/queue-6.12/ipmi-si-return-state-to-normal-if-message-allocation-fails.patch b/queue-6.12/ipmi-si-return-state-to-normal-if-message-allocation-fails.patch
new file mode 100644 (file)
index 0000000..c2eacb0
--- /dev/null
@@ -0,0 +1,44 @@
+From 09dd798270ff582d7309f285d4aaf5dbebae01cb Mon Sep 17 00:00:00 2001
+From: Corey Minyard <corey@minyard.net>
+Date: Mon, 20 Apr 2026 13:02:18 -0500
+Subject: ipmi:si: Return state to normal if message allocation fails
+
+From: Corey Minyard <corey@minyard.net>
+
+commit 09dd798270ff582d7309f285d4aaf5dbebae01cb upstream.
+
+There were places where nothing would get started if a message
+allocation failed, so the driver needs to return to normal state.
+
+Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
+Cc: <stable@vger.kernel.org>
+Signed-off-by: Corey Minyard <corey@minyard.net>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/char/ipmi/ipmi_si_intf.c |    8 ++++++--
+ 1 file changed, 6 insertions(+), 2 deletions(-)
+
+--- a/drivers/char/ipmi/ipmi_si_intf.c
++++ b/drivers/char/ipmi/ipmi_si_intf.c
+@@ -481,15 +481,19 @@ retry:
+       } else if (smi_info->msg_flags & RECEIVE_MSG_AVAIL) {
+               /* Messages available. */
+               smi_info->curr_msg = alloc_msg_handle_irq(smi_info);
+-              if (!smi_info->curr_msg)
++              if (!smi_info->curr_msg) {
++                      smi_info->si_state = SI_NORMAL;
+                       return;
++              }
+               start_getting_msg_queue(smi_info);
+       } else if (smi_info->msg_flags & EVENT_MSG_BUFFER_FULL) {
+               /* Events available. */
+               smi_info->curr_msg = alloc_msg_handle_irq(smi_info);
+-              if (!smi_info->curr_msg)
++              if (!smi_info->curr_msg) {
++                      smi_info->si_state = SI_NORMAL;
+                       return;
++              }
+               start_getting_events(smi_info);
+       } else if (smi_info->msg_flags & OEM_DATA_AVAIL &&
diff --git a/queue-6.12/ksmbd-rewrite-stop_sessions-with-restartable-iteration.patch b/queue-6.12/ksmbd-rewrite-stop_sessions-with-restartable-iteration.patch
new file mode 100644 (file)
index 0000000..fe37741
--- /dev/null
@@ -0,0 +1,190 @@
+From c444139cb747bf6de1922b39900fdf02281490f4 Mon Sep 17 00:00:00 2001
+From: DaeMyung Kang <charsyam@gmail.com>
+Date: Sat, 25 Apr 2026 18:38:28 +0900
+Subject: ksmbd: rewrite stop_sessions() with restartable iteration
+
+From: DaeMyung Kang <charsyam@gmail.com>
+
+commit c444139cb747bf6de1922b39900fdf02281490f4 upstream.
+
+stop_sessions() walks conn_list with hash_for_each() and, for every
+entry, drops conn_list_lock across the transport ->shutdown() call
+before re-acquiring the read lock to continue the loop.  The hash
+walk relies on cross-iteration state (the current bucket and the
+hlist position), which is not preserved across unlock/relock: if
+another thread performs a list mutation during the unlocked window,
+the ongoing iteration becomes unreliable and can re-visit
+connections that have already been handled or skip connections that
+have not.  The outer `if (!hash_empty(conn_list)) goto again;` retry
+masks the symptom in the common case but does not address the
+unsafe iteration itself.
+
+Reframe the loop so it never relies on iterator state across
+unlock/relock.  Under conn_list_lock held for read, pick the first
+connection whose ->shutdown() has not yet been issued by this path,
+pin it by taking an extra reference, record that fact on the
+connection and mark it EXITING while still inside the locked walk,
+then drop the lock.  Then call ->shutdown() outside the lock, drop
+the pin (freeing the connection if the handler already released its
+reference), and restart from the top.
+
+Use a new per-connection flag, conn->stop_called, as the "shutdown
+issued from stop_sessions()" marker rather than reusing the status
+state.  ksmbd_conn_set_exiting() is also invoked by
+ksmbd_sessions_deregister() on sibling channels of a multichannel
+session without issuing a transport shutdown, so treating
+KSMBD_SESS_EXITING as "already handled here" would skip connections
+that still need shutdown() to wake their handler out of recv(),
+leaving the outer retry waiting indefinitely for the hash to drain.
+stop_sessions() is serialised by init_lock in
+ksmbd_conn_transport_destroy(), so writing stop_called under the
+read lock has no other writer.
+
+Set EXITING inside the locked walk so the selection, the stop_called
+marker, and the status transition all happen together, and guard
+against regressing a connection that has already advanced to
+KSMBD_SESS_RELEASING on its own (for example, if the handler exited
+its receive loop for an unrelated reason between teardown steps).
+
+When the pin drop is the last put, release the transport and pair
+ida_destroy(&target->async_ida) with the ida_init() done in
+ksmbd_conn_alloc(), so stop_sessions() retiring a connection on its
+own does not leak the xarray backing of the embedded async_ida.
+
+The outer retry with msleep() is kept to wait for handler threads to
+reach ksmbd_conn_free() and drain the hash.
+
+Observed with an instrumented build that logs one line per visit and
+widens the unlocked window before ->shutdown() by 200 ms, under
+five concurrent cifs mounts (nosharesock, one connection each):
+
+  * Current code: the same connection address is revisited many
+    times during a single stop_sessions() call and ->shutdown() is
+    invoked well beyond the number of live connections before the
+    hash finally drains.
+
+  * Rewritten code: each live connection produces exactly one
+    ->shutdown() call; the function returns as soon as the hash is
+    empty.
+
+Functional teardown via `ksmbd.control --shutdown` with the same
+five mounts completes cleanly on the rewritten path.
+
+Performance is observably unchanged.  Tearing down N concurrent
+nosharesock cifs connections with `ksmbd.control --shutdown` +
+`rmmod ksmbd` takes essentially the same wall time before and after
+the rewrite:
+
+    N        before        after
+    10       4.93s         5.34s
+    30       7.34s         7.03s
+    50       7.31s         7.01s     (3-run avg: 7.04s vs 7.25s)
+   100       6.98s         6.78s
+   200       6.77s         6.89s
+
+and the number of ->shutdown() calls equals the number of live
+connections on both paths when the race is not widened.  The
+teardown is dominated by the msleep(100)-based outer retry waiting
+for handler threads to run ksmbd_conn_free(), not by the iteration
+itself; the restartable loop's worst-case O(N^2) visit cost is in
+the microseconds even at N=200 and sits far below the msleep(100)
+granularity.
+
+Applied alone on top of ksmbd-for-next-next, this patch does not
+introduce a new leak site.  Under the same reproducer (10x
+concurrent-holders + ss -K + ksmbd.control --shutdown + rmmod), the
+tree still shows the pre-existing per-connection transport leak
+count that arises when the last refcount drop lands in one of
+ksmbd_conn_r_count_dec(), __free_opinfo() or session_fd_check() -
+all of which end with a bare kfree() today.  kmemleak backtraces
+for the unreferenced objects point into the TCP accept path
+(sk_clone -> inet_csk_clone_lock, sock_alloc_inode) and none
+involve stop_sessions().  Plugging those bare-kfree sites is the
+responsibility of the follow-up patch.
+
+Fixes: e2f34481b24d ("cifsd: add server-side procedures for SMB3")
+Cc: stable@vger.kernel.org
+Signed-off-by: DaeMyung Kang <charsyam@gmail.com>
+Acked-by: Namjae Jeon <linkinjeon@kernel.org>
+Signed-off-by: Steve French <stfrench@microsoft.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ fs/smb/server/connection.c |   46 +++++++++++++++++++++++++++++++++++++--------
+ fs/smb/server/connection.h |    1 
+ 2 files changed, 39 insertions(+), 8 deletions(-)
+
+--- a/fs/smb/server/connection.c
++++ b/fs/smb/server/connection.c
+@@ -475,24 +475,54 @@ out:
+ static void stop_sessions(void)
+ {
+-      struct ksmbd_conn *conn;
++      struct ksmbd_conn *conn, *target;
+       struct ksmbd_transport *t;
++      bool any;
+       int bkt;
++      /*
++       * Serialised via init_lock; no concurrent stop_sessions() can
++       * touch conn->stop_called, so writing it under the read lock is
++       * safe.
++       */
+ again:
++      target = NULL;
++      any = false;
+       down_read(&conn_list_lock);
+       hash_for_each(conn_list, bkt, conn, hlist) {
+-              t = conn->transport;
+-              ksmbd_conn_set_exiting(conn);
+-              if (t->ops->shutdown) {
+-                      up_read(&conn_list_lock);
++              any = true;
++              if (conn->stop_called)
++                      continue;
++              atomic_inc(&conn->refcnt);
++              conn->stop_called = true;
++              /*
++               * Mark the connection EXITING while still holding the
++               * read lock so the selection and the status transition
++               * happen together.  Do not regress a connection that has
++               * already advanced to RELEASING on its own (e.g. the
++               * handler exited its receive loop for an unrelated
++               * reason).
++               */
++              if (READ_ONCE(conn->status) != KSMBD_SESS_RELEASING)
++                      ksmbd_conn_set_exiting(conn);
++              target = conn;
++              break;
++      }
++      up_read(&conn_list_lock);
++
++      if (target) {
++              t = target->transport;
++              if (t->ops->shutdown)
+                       t->ops->shutdown(t);
+-                      down_read(&conn_list_lock);
++              if (atomic_dec_and_test(&target->refcnt)) {
++                      ida_destroy(&target->async_ida);
++                      t->ops->free_transport(t);
++                      kfree(target);
+               }
++              goto again;
+       }
+-      up_read(&conn_list_lock);
+-      if (!hash_empty(conn_list)) {
++      if (any) {
+               msleep(100);
+               goto again;
+       }
+--- a/fs/smb/server/connection.h
++++ b/fs/smb/server/connection.h
+@@ -46,6 +46,7 @@ struct ksmbd_conn {
+       struct mutex                    srv_mutex;
+       int                             status;
+       unsigned int                    cli_cap;
++      bool                            stop_called;
+       union {
+               __be32                  inet_addr;
+ #if IS_ENABLED(CONFIG_IPV6)
diff --git a/queue-6.12/scsi-target-configfs-bound-snprintf-return-in-tg_pt_gp_members_show.patch b/queue-6.12/scsi-target-configfs-bound-snprintf-return-in-tg_pt_gp_members_show.patch
new file mode 100644 (file)
index 0000000..ee3495f
--- /dev/null
@@ -0,0 +1,46 @@
+From 772a896a56e0e3ef9424a025cec9176f9d8f4552 Mon Sep 17 00:00:00 2001
+From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Date: Sat, 11 Apr 2026 14:06:00 +0200
+Subject: scsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show()
+
+From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+commit 772a896a56e0e3ef9424a025cec9176f9d8f4552 upstream.
+
+target_tg_pt_gp_members_show() formats LUN paths with snprintf() into a
+256-byte stack buffer, then will memcpy() cur_len bytes from that
+buffer.  snprintf() returns the length the output would have had, which
+can exceed the buffer size when the fabric WWN is long because iSCSI IQN
+names can be up to 223 bytes.  The check at the memcpy() site only
+guards the destination page write, not the source read, so memcpy() will
+read past the stack buffer and copy adjacent stack contents to the sysfs
+reader, which when CONFIG_FORTIFY_SOURCE is enabled, fortify_panic()
+will be triggered.
+
+Commit 27e06650a5ea ("scsi: target: target_core_configfs: Add length
+check to avoid buffer overflow") added the same bound to the
+target_lu_gp_members_show() but the tg_pt_gp variant was missed so
+resolve that here.
+
+Cc: Martin K. Petersen <martin.petersen@oracle.com>
+Fixes: c66ac9db8d4a ("[SCSI] target: Add LIO target core v4.0.0-rc6")
+Assisted-by: gregkh_clanker_t1000
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Link: https://patch.msgid.link/2026041159-garter-theft-3be0@gregkh
+Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/target/target_core_configfs.c |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/target/target_core_configfs.c
++++ b/drivers/target/target_core_configfs.c
+@@ -3172,7 +3172,7 @@ static ssize_t target_tg_pt_gp_members_s
+                       config_item_name(&lun->lun_group.cg_item));
+               cur_len++; /* Extra byte for NULL terminator */
+-              if ((cur_len + len) > PAGE_SIZE) {
++              if (cur_len > TG_PT_GROUP_NAME_BUF || (cur_len + len) > PAGE_SIZE) {
+                       pr_warn("Ran out of lu_gp_show_attr"
+                               "_members buffer\n");
+                       break;
diff --git a/queue-6.12/series b/queue-6.12/series
new file mode 100644 (file)
index 0000000..0542d76
--- /dev/null
@@ -0,0 +1,13 @@
+scsi-target-configfs-bound-snprintf-return-in-tg_pt_gp_members_show.patch
+ipmi-add-limits-to-event-and-receive-message-requests.patch
+ipmi-check-event-message-buffer-response-for-bad-data.patch
+ipmi-si-return-state-to-normal-if-message-allocation-fails.patch
+fbdev-udlfb-add-vm_ops-to-dlfb_ops_mmap-to-prevent-use-after-free.patch
+acpi-scan-use-acpi_dev_put-in-object-add-error-paths.patch
+acpi-video-add-backlight-native-quirk-for-dell-optiplex-7770-aio.patch
+acpi-cppc-fix-related_cpus-inconsistency-during-cpu-hotplug.patch
+acpi-video-force-native-backlight-on-hp-omen-16-8a44.patch
+iommufd-fix-a-race-with-concurrent-allocation-and-unmap.patch
+asoc-sof-don-t-allow-pointer-operations-on-unconfigured-streams.patch
+spi-rockchip-fix-controller-deregistration.patch
+ksmbd-rewrite-stop_sessions-with-restartable-iteration.patch
diff --git a/queue-6.12/spi-rockchip-fix-controller-deregistration.patch b/queue-6.12/spi-rockchip-fix-controller-deregistration.patch
new file mode 100644 (file)
index 0000000..81661df
--- /dev/null
@@ -0,0 +1,43 @@
+From 53e7a16070feb7d1d4d81a583eaac5e25048b9c3 Mon Sep 17 00:00:00 2001
+From: Johan Hovold <johan@kernel.org>
+Date: Tue, 24 Mar 2026 09:23:23 +0100
+Subject: spi: rockchip: fix controller deregistration
+
+From: Johan Hovold <johan@kernel.org>
+
+commit 53e7a16070feb7d1d4d81a583eaac5e25048b9c3 upstream.
+
+Make sure to deregister the controller before freeing underlying
+resources like DMA channels during driver unbind.
+
+Fixes: 64e36824b32b ("spi/rockchip: add driver for Rockchip RK3xxx SoCs integrated SPI")
+Cc: stable@vger.kernel.org     # 3.17
+Cc: addy ke <addy.ke@rock-chips.com>
+Signed-off-by: Johan Hovold <johan@kernel.org>
+Link: https://patch.msgid.link/20260324082326.901043-3-johan@kernel.org
+Signed-off-by: Mark Brown <broonie@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/spi/spi-rockchip.c |    4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+--- a/drivers/spi/spi-rockchip.c
++++ b/drivers/spi/spi-rockchip.c
+@@ -914,7 +914,7 @@ static int rockchip_spi_probe(struct pla
+               break;
+       }
+-      ret = devm_spi_register_controller(&pdev->dev, ctlr);
++      ret = spi_register_controller(ctlr);
+       if (ret < 0) {
+               dev_err(&pdev->dev, "Failed to register controller\n");
+               goto err_free_dma_rx;
+@@ -942,6 +942,8 @@ static void rockchip_spi_remove(struct p
+       pm_runtime_get_sync(&pdev->dev);
++      spi_unregister_controller(ctlr);
++
+       pm_runtime_put_noidle(&pdev->dev);
+       pm_runtime_disable(&pdev->dev);
+       pm_runtime_set_suspended(&pdev->dev);