History log of /linux/kernel/hung_task.c (Results 1 – 25 of 712)
Revision Date Author Comments
# 0fc8f620 27-Apr-2026 Thomas Zimmermann <tzimmermann@suse.de>

Merge drm/drm-fixes into drm-misc-fixes

Getting fixes and updates from v7.1-rc1.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>


# f4b369c6 20-Apr-2026 Dmitry Torokhov <dmitry.torokhov@gmail.com>

Merge branch 'next' into for-linus

Prepare input updates for 7.1 merge window.


# 440d6635 17-Apr-2026 Linus Torvalds <torvalds@linux-foundation.org>

Merge tag 'mm-nonmm-stable-2026-04-15-04-20' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:

- "pid: make sub-init creation retryable" (Oleg Nester

Merge tag 'mm-nonmm-stable-2026-04-15-04-20' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:

- "pid: make sub-init creation retryable" (Oleg Nesterov)

Make creation of init in a new namespace more robust by clearing away
some historical cruft which is no longer needed. Also some
documentation fixups

- "selftests/fchmodat2: Error handling and general" (Mark Brown)

Fix and a cleanup for the fchmodat2() syscall selftest

- "lib: polynomial: Move to math/ and clean up" (Andy Shevchenko)

- "hung_task: Provide runtime reset interface for hung task detector"
(Aaron Tomlin)

Give administrators the ability to zero out
/proc/sys/kernel/hung_task_detect_count

- "tools/getdelays: use the static UAPI headers from
tools/include/uapi" (Thomas Weißschuh)

Teach getdelays to use the in-kernel UAPI headers rather than the
system-provided ones

- "watchdog/hardlockup: Improvements to hardlockup" (Mayank Rungta)

Several cleanups and fixups to the hardlockup detector code and its
documentation

- "lib/bch: fix undefined behavior from signed left-shifts" (Josh Law)

A couple of small/theoretical fixes in the bch code

- "ocfs2/dlm: fix two bugs in dlm_match_regions()" (Junrui Luo)

- "cleanup the RAID5 XOR library" (Christoph Hellwig)

A quite far-reaching cleanup to this code. I can't do better than to
quote Christoph:

"The XOR library used for the RAID5 parity is a bit of a mess right
now. The main file sits in crypto/ despite not being cryptography
and not using the crypto API, with the generic implementations
sitting in include/asm-generic and the arch implementations
sitting in an asm/ header in theory. The latter doesn't work for
many cases, so architectures often build the code directly into
the core kernel, or create another module for the architecture
code.

Change this to a single module in lib/ that also contains the
architecture optimizations, similar to the library work Eric
Biggers has done for the CRC and crypto libraries later. After
that it changes to better calling conventions that allow for
smarter architecture implementations (although none is contained
here yet), and uses static_call to avoid indirection function call
overhead"

- "lib/list_sort: Clean up list_sort() scheduling workarounds"
(Kuan-Wei Chiu)

Clean up this library code by removing a hacky thing which was added
for UBIFS, which UBIFS doesn't actually need

- "Fix bugs in extract_iter_to_sg()" (Christian Ehrhardt)

Fix a few bugs in the scatterlist code, add in-kernel tests for the
now-fixed bugs and fix a leak in the test itself

- "kdump: Enable LUKS-encrypted dump target support in ARM64 and
PowerPC" (Coiby Xu)

Enable support of the LUKS-encrypted device dump target on arm64 and
powerpc

- "ocfs2: consolidate extent list validation into block read callbacks"
(Joseph Qi)

Cleanup, simplify, and make more robust ocfs2's validation of extent
list fields (Kernel test robot loves mounting corrupted fs images!)

* tag 'mm-nonmm-stable-2026-04-15-04-20' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (127 commits)
ocfs2: validate group add input before caching
ocfs2: validate bg_bits during freefrag scan
ocfs2: fix listxattr handling when the buffer is full
doc: watchdog: fix typos etc
update Sean's email address
ocfs2: use get_random_u32() where appropriate
ocfs2: split transactions in dio completion to avoid credit exhaustion
ocfs2: remove redundant l_next_free_rec check in __ocfs2_find_path()
ocfs2: validate extent block list fields during block read
ocfs2: remove empty extent list check in ocfs2_dx_dir_lookup_rec()
ocfs2: validate dx_root extent list fields during block read
ocfs2: fix use-after-free in ocfs2_fault() when VM_FAULT_RETRY
ocfs2: handle invalid dinode in ocfs2_group_extend
.get_maintainer.ignore: add Askar
ocfs2: validate bg_list extent bounds in discontig groups
checkpatch: exclude forward declarations of const structs
tools/accounting: handle truncated taskstats netlink messages
taskstats: set version in TGID exit notifications
ocfs2/heartbeat: fix slot mapping rollback leaks on error paths
arm64,ppc64le/kdump: pass dm-crypt keys to kdump kernel
...

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# 73d40c42 03-Mar-2026 Aaron Tomlin <atomlin@atomlin.com>

hung_task: explicitly report I/O wait state in log output

Currently, the hung task reporting mechanism indiscriminately labels all
TASK_UNINTERRUPTIBLE (D) tasks as "blocked", irrespective of whethe

hung_task: explicitly report I/O wait state in log output

Currently, the hung task reporting mechanism indiscriminately labels all
TASK_UNINTERRUPTIBLE (D) tasks as "blocked", irrespective of whether they
are awaiting I/O completion or kernel locking primitives. This ambiguity
compels system administrators to manually inspect stack traces to discern
whether the delay stems from an I/O wait (typically indicative of hardware
or filesystem anomalies) or software contention. Such detailed analysis
is not always immediately accessible to system administrators or support
engineers.

To address this, this patch utilises the existing in_iowait field within
struct task_struct to augment the failure report. If the task is blocked
due to I/O (e.g., via io_schedule_prepare()), the log message is updated
to explicitly state "blocked in I/O wait".

Examples:
- Standard Block: "INFO: task bash:123 blocked for more than 120
seconds".

- I/O Block: "INFO: task dd:456 blocked in I/O wait for more than
120 seconds".

Theoretically, concurrent executions of io_schedule_finish() could result
in a race condition where the read flag does not precisely correlate with
the subsequently printed backtrace. However, this limitation is deemed
acceptable in practice. The entire reporting mechanism is inherently racy
by design; nevertheless, it remains highly reliable in the vast majority
of cases, particularly because it primarily captures protracted stalls.
Consequently, introducing additional synchronisation to mitigate this
minor inaccuracy would be entirely disproportionate to the situation.

Link: https://lkml.kernel.org/r/20260303221324.4106917-1-atomlin@atomlin.com
Signed-off-by: Aaron Tomlin <atomlin@atomlin.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Lance Yang <lance.yang@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

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# 5eaef7f8 03-Mar-2026 Petr Mladek <pmladek@suse.com>

hung_task: increment the global counter immediately

A recent change allowed to reset the global counter of hung tasks using
the sysctl interface. A potential race with the regular check has been
so

hung_task: increment the global counter immediately

A recent change allowed to reset the global counter of hung tasks using
the sysctl interface. A potential race with the regular check has been
solved by updating the global counter only once at the end of the check.

However, the hung task check can take a significant amount of time,
particularly when task information is being dumped to slow serial
consoles. Some users monitor this global counter to trigger immediate
migration of critical containers. Delaying the increment until the full
check completes postpones these high-priority rescue operations.

Update the global counter as soon as a hung task is detected. Since the
value is read asynchronously, a relaxed atomic operation is sufficient.

Link: https://lkml.kernel.org/r/20260303203031.4097316-4-atomlin@atomlin.com
Signed-off-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Aaron Tomlin <atomlin@atomlin.com>
Reported-by: Lance Yang <lance.yang@linux.dev>
Closes: https://lore.kernel.org/r/f239e00f-4282-408d-b172-0f9885f4b01b@linux.dev
Reviewed-by: Aaron Tomlin <atomlin@atomlin.com>
Reviewed-by: Lance Yang <lance.yang@linux.dev>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Joel Granados <joel.granados@kernel.org>
Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

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# 49085e1b 03-Mar-2026 Aaron Tomlin <atomlin@atomlin.com>

hung_task: enable runtime reset of hung_task_detect_count

Currently, the hung_task_detect_count sysctl provides a cumulative count
of hung tasks since boot. In long-running, high-availability
envir

hung_task: enable runtime reset of hung_task_detect_count

Currently, the hung_task_detect_count sysctl provides a cumulative count
of hung tasks since boot. In long-running, high-availability
environments, this counter may lose its utility if it cannot be reset once
an incident has been resolved. Furthermore, the previous implementation
relied upon implicit ordering, which could not strictly guarantee that
diagnostic metadata published by one CPU was visible to the panic logic on
another.

This patch introduces the capability to reset the detection count by
writing "0" to the hung_task_detect_count sysctl. The proc_handler logic
has been updated to validate this input and atomically reset the counter.

The synchronisation of sysctl_hung_task_detect_count relies upon a
transactional model to ensure the integrity of the detection counter
against concurrent resets from userspace. The application of
atomic_long_read_acquire() and atomic_long_cmpxchg_release() is correct
and provides the following guarantees:

1. Prevention of Load-Store Reordering via Acquire Semantics By
utilising atomic_long_read_acquire() to snapshot the counter
before initiating the task traversal, we establish a strict
memory barrier. This prevents the compiler or hardware from
reordering the initial load to a point later in the scan. Without
this "acquire" barrier, a delayed load could potentially read a
"0" value resulting from a userspace reset that occurred
mid-scan. This would lead to the subsequent cmpxchg succeeding
erroneously, thereby overwriting the user's reset with stale
increment data.

2. Atomicity of the "Commit" Phase via Release Semantics The
atomic_long_cmpxchg_release() serves as the transaction's commit
point. The "release" barrier ensures that all diagnostic
recordings and task-state observations made during the scan are
globally visible before the counter is incremented.

3. Race Condition Resolution This pairing effectively detects any
"out-of-band" reset of the counter. If
sysctl_hung_task_detect_count is modified via the procfs
interface during the scan, the final cmpxchg will detect the
discrepancy between the current value and the "acquire" snapshot.
Consequently, the update will fail, ensuring that a reset command
from the administrator is prioritised over a scan that may have
been invalidated by that very reset.

Link: https://lkml.kernel.org/r/20260303203031.4097316-3-atomlin@atomlin.com
Signed-off-by: Aaron Tomlin <atomlin@atomlin.com>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Joel Granados <joel.granados@kernel.org>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Lance Yang <lance.yang@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

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# 00b5cdeb 03-Mar-2026 Aaron Tomlin <atomlin@atomlin.com>

hung_task: refactor detection logic and atomicise detection count

Patch series "hung_task: Provide runtime reset interface for hung task
detector", v9.

This series introduces the ability to reset
/

hung_task: refactor detection logic and atomicise detection count

Patch series "hung_task: Provide runtime reset interface for hung task
detector", v9.

This series introduces the ability to reset
/proc/sys/kernel/hung_task_detect_count.

Writing a "0" value to this file atomically resets the counter of detected
hung tasks. This functionality provides system administrators with the
means to clear the cumulative diagnostic history following incident
resolution, thereby simplifying subsequent monitoring without
necessitating a system restart.


This patch (of 3):

The check_hung_task() function currently conflates two distinct
responsibilities: validating whether a task is hung and handling the
subsequent reporting (printing warnings, triggering panics, or
tracepoints).

This patch refactors the logic by introducing hung_task_info(), a function
dedicated solely to reporting. The actual detection check,
task_is_hung(), is hoisted into the primary loop within
check_hung_uninterruptible_tasks(). This separation clearly decouples the
mechanism of detection from the policy of reporting.

Furthermore, to facilitate future support for concurrent hung task
detection, the global sysctl_hung_task_detect_count variable is converted
from unsigned long to atomic_long_t. Consequently, the counting logic is
updated to accumulate the number of hung tasks locally (this_round_count)
during the iteration. The global counter is then updated atomically via
atomic_long_cmpxchg_relaxed() once the loop concludes, rather than
incrementally during the scan.

These changes are strictly preparatory and introduce no functional change
to the system's runtime behaviour.

Link: https://lkml.kernel.org/r/20260303203031.4097316-1-atomlin@atomlin.com
Link: https://lkml.kernel.org/r/20260303203031.4097316-2-atomlin@atomlin.com
Signed-off-by: Aaron Tomlin <atomlin@atomlin.com>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Joel Granados <joel.granados@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

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# 0421ccdf 12-Mar-2026 Dmitry Torokhov <dmitry.torokhov@gmail.com>

Merge tag 'v7.0-rc3' into next

Sync up with the mainline to brig up the latest changes, specifically
changes to ALPS driver.


# ec496f77 09-Feb-2026 Jiri Kosina <jkosina@suse.com>

Merge branch 'for-6.20/sony' into for-linus

- Support for Rock band 4 PS4 and PS5 guitars (Rosalie Wanders)


# cc4adab1 20-Jan-2026 Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>

Merge tag 'v6.19-rc1' into msm-next

Merge Linux 6.19-rc1 in order to catch up with other changes (e.g. UBWC
config database defining UBWC_6).

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.q

Merge tag 'v6.19-rc1' into msm-next

Merge Linux 6.19-rc1 in order to catch up with other changes (e.g. UBWC
config database defining UBWC_6).

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>

show more ...


# 24f171c7 21-Dec-2025 Takashi Iwai <tiwai@suse.de>

Merge tag 'asoc-fix-v6.19-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v6.19

We've been quite busy with fixes since the merge window, though

Merge tag 'asoc-fix-v6.19-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v6.19

We've been quite busy with fixes since the merge window, though not in
any particularly exciting ways - the standout thing is the fix for _SX
controls which were broken by a change to how we do clamping, otherwise
it's all fairly run of the mill fixes and quirks.

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# 5add3c3c 19-Dec-2025 Thomas Hellström <thomas.hellstrom@linux.intel.com>

Merge drm/drm-next into drm-xe-next

Backmerging to bring in 6.19-rc1. An important upstream bugfix and
to help unblock PTL CI.

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>


# ec439c38 17-Dec-2025 Alexei Starovoitov <ast@kernel.org>

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf after 6.19-rc1

Cross-merge BPF and other fixes after downstream PR.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>


# b8304863 15-Dec-2025 Rodrigo Vivi <rodrigo.vivi@intel.com>

Merge drm/drm-next into drm-intel-next

Sync-up some display code needed for Async flips refactor.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>


# 84318277 15-Dec-2025 Maarten Lankhorst <dev@lankhorst.se>

Merge remote-tracking branch 'drm/drm-fixes' into drm-misc-fixes

Pull in rc1 to include all changes since the merge window closed,
and grab all fixes and changes from drm/drm-next.

Signed-off-by: M

Merge remote-tracking branch 'drm/drm-fixes' into drm-misc-fixes

Pull in rc1 to include all changes since the merge window closed,
and grab all fixes and changes from drm/drm-next.

Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>

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# 7f790dd2 15-Dec-2025 Maxime Ripard <mripard@kernel.org>

Merge drm/drm-next into drm-misc-next

Let's kickstart the v6.20 (7.0?) release cycle.

Signed-off-by: Maxime Ripard <mripard@kernel.org>


# a4a508df 13-Dec-2025 Dmitry Torokhov <dmitry.torokhov@gmail.com>

Merge tag 'v6.18' into next

Sync up with the mainline to bring in the latest APIs.


# 509d3f45 06-Dec-2025 Linus Torvalds <torvalds@linux-foundation.org>

Merge tag 'mm-nonmm-stable-2025-12-06-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:

- "panic: sys_info: Refactor and fix a potential issue

Merge tag 'mm-nonmm-stable-2025-12-06-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:

- "panic: sys_info: Refactor and fix a potential issue" (Andy Shevchenko)
fixes a build issue and does some cleanup in ib/sys_info.c

- "Implement mul_u64_u64_div_u64_roundup()" (David Laight)
enhances the 64-bit math code on behalf of a PWM driver and beefs up
the test module for these library functions

- "scripts/gdb/symbols: make BPF debug info available to GDB" (Ilya Leoshkevich)
makes BPF symbol names, sizes, and line numbers available to the GDB
debugger

- "Enable hung_task and lockup cases to dump system info on demand" (Feng Tang)
adds a sysctl which can be used to cause additional info dumping when
the hung-task and lockup detectors fire

- "lib/base64: add generic encoder/decoder, migrate users" (Kuan-Wei Chiu)
adds a general base64 encoder/decoder to lib/ and migrates several
users away from their private implementations

- "rbree: inline rb_first() and rb_last()" (Eric Dumazet)
makes TCP a little faster

- "liveupdate: Rework KHO for in-kernel users" (Pasha Tatashin)
reworks the KEXEC Handover interfaces in preparation for Live Update
Orchestrator (LUO), and possibly for other future clients

- "kho: simplify state machine and enable dynamic updates" (Pasha Tatashin)
increases the flexibility of KEXEC Handover. Also preparation for LUO

- "Live Update Orchestrator" (Pasha Tatashin)
is a major new feature targeted at cloud environments. Quoting the
cover letter:

This series introduces the Live Update Orchestrator, a kernel
subsystem designed to facilitate live kernel updates using a
kexec-based reboot. This capability is critical for cloud
environments, allowing hypervisors to be updated with minimal
downtime for running virtual machines. LUO achieves this by
preserving the state of selected resources, such as memory,
devices and their dependencies, across the kernel transition.

As a key feature, this series includes support for preserving
memfd file descriptors, which allows critical in-memory data, such
as guest RAM or any other large memory region, to be maintained in
RAM across the kexec reboot.

Mike Rappaport merits a mention here, for his extensive review and
testing work.

- "kexec: reorganize kexec and kdump sysfs" (Sourabh Jain)
moves the kexec and kdump sysfs entries from /sys/kernel/ to
/sys/kernel/kexec/ and adds back-compatibility symlinks which can
hopefully be removed one day

- "kho: fixes for vmalloc restoration" (Mike Rapoport)
fixes a BUG which was being hit during KHO restoration of vmalloc()
regions

* tag 'mm-nonmm-stable-2025-12-06-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (139 commits)
calibrate: update header inclusion
Reinstate "resource: avoid unnecessary lookups in find_next_iomem_res()"
vmcoreinfo: track and log recoverable hardware errors
kho: fix restoring of contiguous ranges of order-0 pages
kho: kho_restore_vmalloc: fix initialization of pages array
MAINTAINERS: TPM DEVICE DRIVER: update the W-tag
init: replace simple_strtoul with kstrtoul to improve lpj_setup
KHO: fix boot failure due to kmemleak access to non-PRESENT pages
Documentation/ABI: new kexec and kdump sysfs interface
Documentation/ABI: mark old kexec sysfs deprecated
kexec: move sysfs entries to /sys/kernel/kexec
test_kho: always print restore status
kho: free chunks using free_page() instead of kfree()
selftests/liveupdate: add kexec test for multiple and empty sessions
selftests/liveupdate: add simple kexec-based selftest for LUO
selftests/liveupdate: add userspace API selftests
docs: add documentation for memfd preservation via LUO
mm: memfd_luo: allow preserving memfd
liveupdate: luo_file: add private argument to store runtime state
mm: shmem: export some functions to internal.h
...

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# 2ace5271 21-Nov-2025 Peter Zijlstra <peterz@infradead.org>

Merge branch 'objtool/core'

Bring in the UDB and objtool data annotations to avoid conflicts while further extending the bug exceptions.

Signed-off-by: Peter Zijlstra <peterz@infradead.org>


# 8b2b9b4f 13-Nov-2025 Feng Tang <feng.tang@linux.alibaba.com>

hung_task: add hung_task_sys_info sysctl to dump sys info on task-hung

When task-hung happens, developers may need different kinds of system
information (call-stacks, memory info, locks, etc.) to he

hung_task: add hung_task_sys_info sysctl to dump sys info on task-hung

When task-hung happens, developers may need different kinds of system
information (call-stacks, memory info, locks, etc.) to help debugging.

Add 'hung_task_sys_info' sysctl knob to take human readable string like
"tasks,mem,timers,locks,ftrace,...", and when task-hung happens, all
requested information will be dumped. (refer kernel/sys_info.c for more
details).

Meanwhile, the newly introduced sys_info() call is used to unify some
existing info-dumping knobs.

[feng.tang@linux.alibaba.com: maintain consistecy established behavior, per Lance and Petr]
Link: https://lkml.kernel.org/r/aRncJo1mA5Zk77Hr@U-2FWC9VHC-2323.local
Link: https://lkml.kernel.org/r/20251113111039.22701-3-feng.tang@linux.alibaba.com
Signed-off-by: Feng Tang <feng.tang@linux.alibaba.com>
Suggested-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Lance Yang <lance.yang@linux.dev>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: "Paul E . McKenney" <paulmck@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

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# af9b65d6 04-Nov-2025 Christoph Hellwig <hch@lst.de>

kernel/hung_task: unexport sysctl_hung_task_timeout_secs

This was added by the bcachefs pull requests despite various
objections, and with bcachefs removed is now unused.

This reverts commit 5c3273

kernel/hung_task: unexport sysctl_hung_task_timeout_secs

This was added by the bcachefs pull requests despite various
objections, and with bcachefs removed is now unused.

This reverts commit 5c3273ec3c6a ("kernel/hung_task.c: export
sysctl_hung_task_timeout_secs").

Link: https://lkml.kernel.org/r/20251104121920.2430568-1-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Lance Yang <lance.yang@linux.dev>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

show more ...


# f39b6c46 18-Nov-2025 Dmitry Torokhov <dmitry.torokhov@gmail.com>

Merge tag 'v6.18-rc6' into for-linus

Sync up with the mainline to bring in definition of
INPUT_PROP_HAPTIC_TOUCHPAD.


# 9544f9e6 15-Oct-2025 Li RongQing <lirongqing@baidu.com>

hung_task: panic when there are more than N hung tasks at the same time

The hung_task_panic sysctl is currently a blunt instrument: it's all or
nothing.

Panicking on a single hung task can be an ov

hung_task: panic when there are more than N hung tasks at the same time

The hung_task_panic sysctl is currently a blunt instrument: it's all or
nothing.

Panicking on a single hung task can be an overreaction to a transient
glitch. A more reliable indicator of a systemic problem is when
multiple tasks hang simultaneously.

Extend hung_task_panic to accept an integer threshold, allowing the
kernel to panic only when N hung tasks are detected in a single scan.
This provides finer control to distinguish between isolated incidents
and system-wide failures.

The accepted values are:
- 0: Don't panic (unchanged)
- 1: Panic on the first hung task (unchanged)
- N > 1: Panic after N hung tasks are detected in a single scan

The original behavior is preserved for values 0 and 1, maintaining full
backward compatibility.

[lance.yang@linux.dev: new changelog]
Link: https://lkml.kernel.org/r/20251015063615.2632-1-lirongqing@baidu.com
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Lance Yang <lance.yang@linux.dev>
Tested-by: Lance Yang <lance.yang@linux.dev>
Acked-by: Andrew Jeffery <andrew@codeconstruct.com.au> [aspeed_g5_defconfig]
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: David Hildenbrand <david@redhat.com>
Cc: Florian Wesphal <fw@strlen.de>
Cc: Jakub Kacinski <kuba@kernel.org>
Cc: Jason A. Donenfeld <jason@zx2c4.com>
Cc: Joel Granados <joel.granados@kernel.org>
Cc: Joel Stanley <joel@jms.id.au>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kees Cook <kees@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: "Paul E . McKenney" <paulmck@kernel.org>
Cc: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Phil Auld <pauld@redhat.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Simon Horman <horms@kernel.org>
Cc: Stanislav Fomichev <sdf@fomichev.me>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

show more ...


# cb9f145f 01-Nov-2025 Rob Clark <robin.clark@oss.qualcomm.com>

Merge remote-tracking branch 'drm/drm-next' into msm-next-robclark

Back-merge drm-next to get caught up.

Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>


# ec2e0fb0 16-Oct-2025 Takashi Iwai <tiwai@suse.de>

Merge tag 'asoc-fix-v6.18-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v6.18

A moderately large collection of driver specific fixes, plus a f

Merge tag 'asoc-fix-v6.18-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v6.18

A moderately large collection of driver specific fixes, plus a few new
quirks and device IDs. The NAU8821 changes are a little large but more
in mechanical ways than in ways that are complex.

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