Tejun Heo 88f1c87de1 locking/lockdep: Avoid triggering hardlockup from debug_show_all_locks() ...

debug_show_all_locks() iterates all tasks and print held locks whole
holding tasklist_lock.  This can take a while on a slow console device
and may end up triggering NMI hardlockup detector if someone else ends
up waiting for tasklist_lock.

Touch the NMI watchdog while printing the held locks to avoid
spuriously triggering the hardlockup detector.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kernel-team@fb.com
Link: http://lkml.kernel.org/r/20180122220055.GB1771050@devbig577.frc2.facebook.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2018-01-24 10:00:09 +01:00

..

bpf

bpf: mark dst unknown on inconsistent {s, u}bounds adjustments

2018-01-17 16:23:17 -08:00

cgroup

cgroup: make cgroup.threads delegatable

2018-01-10 09:42:32 -08:00

configs

ANDROID: binder: add hwbinder,vndbinder to BINDER_DEVICES.

2017-08-22 18:43:23 -07:00

debug

kdb: Fix handling of kallsyms_symbol_next() return value

2017-12-06 16:12:43 -06:00

events

locking/barriers: Convert users of lockless_dereference() to READ_ONCE()

2017-12-17 13:57:15 +01:00

gcov

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

irq

irq/matrix: Spread interrupts on allocation

2018-01-18 11:38:41 +01:00

livepatch

Merge branch 'for-linus' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching

2017-11-15 10:21:58 -08:00

locking

locking/lockdep: Avoid triggering hardlockup from debug_show_all_locks()

2018-01-24 10:00:09 +01:00

power

Revert "cpuset: Make cpuset hotplug synchronous"

2017-12-04 14:41:11 -08:00

printk

remove task and stack pointer printout from oops dump

2017-12-05 08:23:20 -08:00

rcu

Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2017-11-13 17:56:58 -08:00

sched

delayacct: Account blkio completion on the correct task

2018-01-16 03:29:36 +01:00

time

timers: Unconditionally check deferrable base

2018-01-14 23:25:33 +01:00

trace

tracing: Fix converting enum's from the map in trace_event_eval_update()

2018-01-18 15:53:10 -05:00

.gitignore

…

acct.c

kernel/acct.c: fix the acct->needcheck check in check_free_space()

2018-01-04 16:45:09 -08:00

async.c

async: Adjust system_state checks

2017-05-23 10:01:37 +02:00

audit_fsnotify.c

Merge branch 'fsnotify' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

2017-05-03 11:05:15 -07:00

audit_tree.c

Merge branch 'fsnotify' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

2017-11-14 14:08:20 -08:00

audit_watch.c

Merge tag 'audit-pr-20170816' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit

2017-08-16 16:48:34 -07:00

audit.c

Audit: remove unused audit_log_secctx function

2017-11-10 16:08:47 -05:00

audit.h

Merge tag 'audit-pr-20171113' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit

2017-11-15 13:28:48 -08:00

auditfilter.c

audit: filter PATH records keyed on filesystem magic

2017-11-10 16:08:56 -05:00

auditsc.c

Merge tag 'audit-pr-20171113' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit

2017-11-15 13:28:48 -08:00

backtracetest.c

…

bounds.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

capability.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

compat.c

sched_rr_get_interval(): move compat to native, get rid of set_fs()

2017-09-20 00:30:57 -04:00

configs.c

Replace <asm/uaccess.h> with <linux/uaccess.h> globally

2016-12-24 11:46:01 -08:00

context_tracking.c

…

cpu_pm.c

PM / CPU: replace raw_notifier with atomic_notifier

2017-07-31 13:09:49 +02:00

cpu.c

Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2017-12-31 12:30:34 -08:00

crash_core.c

kdump: write correct address of mem_section into vmcoreinfo

2018-01-13 10:42:48 -08:00

crash_dump.c

…

cred.c

doc: ReSTify credentials.txt

2017-05-18 10:30:19 -06:00

delayacct.c

delayacct: Account blkio completion on the correct task

2018-01-16 03:29:36 +01:00

dma.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

elfcore.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

exec_domain.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

exit.c

kernel/exit.c: export abort() to modules

2018-01-04 16:45:09 -08:00

extable.c

kprobes, x86/alternatives: Use text_mutex to protect smp_alt_modules

2017-11-07 12:20:09 +01:00

fork.c

Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2017-12-23 11:53:04 -08:00

freezer.c

…

futex_compat.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

futex.c

futex: Fix OWNER_DEAD fixup

2018-01-24 09:58:18 +01:00

groups.c

kernel: make groups_sort calling a responsibility group_info allocators

2017-12-14 16:00:49 -08:00

hung_task.c

kernel/hung_task.c: defer showing held locks

2017-05-08 17:15:10 -07:00

irq_work.c

Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2017-11-13 17:33:11 -08:00

jump_label.c

jump_label: Invoke jump_label_test() via early_initcall()

2017-11-14 08:41:41 +01:00

kallsyms.c

kallsyms: take advantage of the new '%px' format

2017-11-29 10:30:13 -08:00

kcmp.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

Kconfig.freezer

…

Kconfig.hz

…

Kconfig.locks

locking/mutex: Allow MUTEX_SPIN_ON_OWNER when DEBUG_MUTEXES

2016-10-25 11:31:51 +02:00

Kconfig.preempt

…

kcov.c

kcov: fix comparison callback signature

2017-12-14 16:00:48 -08:00

kexec_core.c

x86/mm, kexec: Allow kexec to be used with SME

2017-07-18 11:38:04 +02:00

kexec_file.c

resource: Provide resource struct in resource walk callback

2017-11-07 15:35:57 +01:00

kexec_internal.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

kexec.c

kdump: protect vmcoreinfo data under the crash memory

2017-07-12 16:26:00 -07:00

kmod.c

kmod: move #ifdef CONFIG_MODULES wrapper to Makefile

2017-09-08 18:26:51 -07:00

kprobes.c

kprobes: Disable the jprobes APIs

2017-10-20 11:02:29 +02:00

ksysfs.c

kexec: move vmcoreinfo out of the kernel's .bss section

2017-07-12 16:25:59 -07:00

kthread.c

treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts

2017-11-21 16:35:54 -08:00

latencytop.c

sched/headers: Prepare to move sched_info_on() and force_schedstat_enabled() from <linux/sched.h> to <linux/sched/stat.h>

2017-03-02 08:42:39 +01:00

Makefile

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

memremap.c

memremap: add scheduling point to devm_memremap_pages

2017-10-03 17:54:25 -07:00

module_signing.c

…

module-internal.h

…

module.c

kallsyms: take advantage of the new '%px' format

2017-11-29 10:30:13 -08:00

notifier.c

kernel/notifier.c: simplify expression

2017-02-24 17:46:56 -08:00

nsproxy.c

perf: Add PERF_RECORD_NAMESPACES to include namespaces related info

2017-03-13 15:57:41 -03:00

padata.c

treewide: setup_timer() -> timer_setup()

2017-11-21 15:57:07 -08:00

panic.c

kernel/panic.c: add TAINT_AUX

2017-11-17 16:10:04 -08:00

params.c

kernel/params.c: improve STANDARD_PARAM_DEF readability

2017-10-03 17:54:26 -07:00

pid_namespace.c

pid: remove pidhash

2017-11-17 16:10:04 -08:00

pid.c

pid: Handle failure to allocate the first pid in a pid namespace

2017-12-23 21:00:09 -06:00

profile.c

sched/headers: Prepare to move sched_info_on() and force_schedstat_enabled() from <linux/sched.h> to <linux/sched/stat.h>

2017-03-02 08:42:39 +01:00

ptrace.c

signal: Remove kernel interal si_code magic

2017-07-24 14:30:28 -05:00

range.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

reboot.c

kernel/reboot.c: add devm_register_reboot_notifier()

2017-11-17 16:10:04 -08:00

relay.c

Merge branch 'work.splice' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2017-05-02 11:38:06 -07:00

resource.c

x86/mm, resource: Use PAGE_KERNEL protection for ioremap of memory pages

2017-11-07 15:35:58 +01:00

seccomp.c

locking/barriers: Convert users of lockless_dereference() to READ_ONCE()

2017-12-17 13:57:15 +01:00

signal.c

Merge branch 'akpm' (patches from Andrew)

2017-11-17 16:56:17 -08:00

smp.c

smp/core: Use lockdep to assert IRQs are disabled/enabled

2017-11-08 11:13:50 +01:00

smpboot.c

watchdog/core, powerpc: Lock cpus across reconfiguration

2017-10-04 10:53:54 +02:00

smpboot.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

softirq.c

kmemcheck: rip it out

2017-11-15 18:21:05 -08:00

stacktrace.c

stacktrace/x86: add function for detecting reliable stack traces

2017-03-08 09:18:02 +01:00

stop_machine.c

stop_machine: Provide stop_machine_cpuslocked()

2017-05-26 10:10:36 +02:00

sys_ni.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

sys.c

Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

2017-11-15 10:56:56 -08:00

sysctl_binary.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

sysctl.c

kernel/sysctl.c: code cleanups

2017-11-17 16:10:03 -08:00

task_work.c

locking/barriers: Convert users of lockless_dereference() to READ_ONCE()

2017-12-17 13:57:15 +01:00

taskstats.c

taskstats: add e/u/stime for TGID command

2017-05-08 17:15:12 -07:00

test_kprobes.c

kprobes: Disable the jprobes test code

2017-10-20 11:02:54 +02:00

torture.c

torture: Fix typo suppressing CPU-hotplug statistics

2017-07-25 13:04:45 -07:00

tracepoint.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task.h>

2017-03-02 08:42:35 +01:00

tsacct.c

sched/headers: Prepare to move cputime functionality from <linux/sched.h> into <linux/sched/cputime.h>

2017-03-02 08:42:39 +01:00

ucount.c

ucount: Remove the atomicity from ucount->count

2017-03-06 15:26:37 -06:00

uid16.c

kernel: make groups_sort calling a responsibility group_info allocators

2017-12-14 16:00:49 -08:00

umh.c

kernel/umh.c: optimize 'proc_cap_handler()'

2017-11-17 16:10:01 -08:00

up.c

smp: Avoid using two cache lines for struct call_single_data

2017-08-29 15:14:38 +02:00

user_namespace.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

2017-11-16 12:20:15 -08:00

user-return-notifier.c

…

user.c

userns: use union in {g,u}idmap struct

2017-10-31 17:22:58 -05:00

utsname_sysctl.c

sched/headers: Remove <linux/rwsem.h> from <linux/sched.h>

2017-03-03 01:45:36 +01:00

utsname.c

sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h>

2017-03-02 08:42:38 +01:00

watchdog_hld.c

Merge branch 'linus' into core/urgent, to pick up dependent commits

2017-11-04 08:53:04 +01:00

watchdog.c

Merge branch 'linus' into sched/core, to pick up fixes

2017-11-08 10:17:15 +01:00

workqueue_internal.h

Merge branch 'for-4.14-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

2017-11-06 12:26:49 -08:00

workqueue.c

workqueue: avoid hard lockups in show_workqueue_state()

2018-01-12 11:39:49 -08:00