Peter Zijlstra be45bf5395 watchdog/softlockup: Fix cpu_stop_queue_work() double-queue bug ... When scheduling is delayed for longer than the softlockup interrupt period it is possible to double-queue the cpu_stop_work, causing list corruption. Cure this by adding a completion to track the cpu_stop_work's progress. Reported-by: kernel test robot <lkp@intel.com> Tested-by: Rong Chen <rong.a.chen@intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: 9cf57731b6 ("watchdog/softlockup: Replace "watchdog/%u" threads with cpu_stop_work") Link: http://lkml.kernel.org/r/20180713104208.GW2494@hirez.programming.kicks-ass.net Signed-off-by: Ingo Molnar <mingo@kernel.org>		2018-07-15 23:51:19 +02:00
..
bpf	bpf: sockhash, add release routine	2018-07-01 01:21:32 +02:00
cgroup	docs: Fix some broken references	2018-06-15 18:10:01 -03:00
configs	kconfig: tinyconfig: remove stale stack protector fixups	2018-06-15 07:15:28 +09:00
debug	treewide: kzalloc() -> kcalloc()	2018-06-12 16:19:22 -07:00
dma	swiotlb: export swiotlb_dma_ops	2018-06-28 14:00:40 +02:00
events	perf/core: Move inline keyword at the beginning of declaration	2018-06-27 09:55:58 +02:00
gcov	gcov: remove CONFIG_GCOV_FORMAT_AUTODETECT	2018-06-08 18:56:02 +09:00
irq	genirq/debugfs: Add missing IRQCHIP_SUPPORTS_LEVEL_MSI debug	2018-06-22 14:22:00 +02:00
livepatch
locking	Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-06-24 19:36:16 +08:00
power	sched/swait: Rename to exclusive	2018-06-20 11:35:56 +02:00
printk	Printk changes for 4.18	2018-06-06 16:04:55 -07:00
rcu	sched/swait: Rename to exclusive	2018-06-20 11:35:56 +02:00
sched	Merge branch 'sched/urgent' into sched/core, to pick up fixes	2018-07-03 09:20:22 +02:00
time	Revert "tick: Prefer a lower rating device only if it's CPU local device"	2018-07-10 22:12:47 +02:00
trace	tracing: Reorder display of TGID to be after PID	2018-07-12 19:56:25 -04:00
.gitignore
acct.c
async.c
audit.c	audit: use inline function to get audit context	2018-05-14 17:24:18 -04:00
audit.h
audit_fsnotify.c	fsnotify: add fsnotify_add_inode_mark() wrappers	2018-05-18 14:58:22 +02:00
audit_tree.c	fsnotify: add fsnotify_add_inode_mark() wrappers	2018-05-18 14:58:22 +02:00
audit_watch.c	\n	2018-06-17 05:06:18 +09:00
auditfilter.c	audit: use existing session info function	2018-05-18 15:47:54 -04:00
auditsc.c	audit: Fix wrong task in comparison of session ID	2018-05-21 14:27:43 -04:00
backtracetest.c
bounds.c
capability.c
compat.c	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-06-04 20:27:54 -07:00
configs.c
context_tracking.c	context_tracking: Switch to new static_branch API	2015-11-24 09:56:43 +01:00
cpu.c	watchdog/softlockup: Replace "watchdog/%u" threads with cpu_stop_work	2018-07-03 09:20:43 +02:00
cpu_pm.c	PM / CPU: replace raw_notifier with atomic_notifier	2017-07-31 13:09:49 +02:00
crash_core.c	mm: split page_type out from _mapcount	2018-06-07 17:34:37 -07:00
crash_dump.c
cred.c
delayacct.c
dma.c	proc: introduce proc_create_single{,_data}	2018-05-16 07:23:35 +02:00
elfcore.c
exec_domain.c	proc: introduce proc_create_single{,_data}	2018-05-16 07:23:35 +02:00
exit.c
extable.c
fail_function.c	treewide: kmalloc() -> kmalloc_array()	2018-06-12 16:19:22 -07:00
fork.c	mm: check for SIGKILL inside dup_mmap() loop	2018-06-15 07:55:24 +09:00
freezer.c	freezer, oom: check TIF_MEMDIE on the correct task	2016-07-28 16:07:41 -07:00
futex.c
futex_compat.c
groups.c
hung_task.c	kernel/hung_task.c: show all hung tasks before panic	2018-06-07 17:34:39 -07:00
iomem.c	memremap: split devm_memremap_pages() and memremap() infrastructure	2018-05-15 23:08:33 -07:00
irq_work.c
jump_label.c
kallsyms.c
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c	sched/core / kcov: avoid kcov_area during task switch	2018-06-15 07:55:24 +09:00
kexec.c
kexec_core.c	kexec: yield to scheduler when loading kimage segments	2018-06-15 07:55:24 +09:00
kexec_file.c	treewide: Use array_size() in vzalloc()	2018-06-12 16:19:22 -07:00
kexec_internal.h
kmod.c
kprobes.c
ksysfs.c
kthread.c	kthread: Simplify kthread_park() completion	2018-07-03 09:20:44 +02:00
latencytop.c
Makefile	dma-mapping: move all DMA mapping code to kernel/dma	2018-06-14 08:50:37 +02:00
memremap.c	mm: introduce MEMORY_DEVICE_FS_DAX and CONFIG_DEV_PAGEMAP_OPS	2018-05-22 06:59:39 -07:00
module-internal.h
module.c	Modules updates for v4.18	2018-06-16 07:36:39 +09:00
module_signing.c
notifier.c	kernel/notifier.c: simplify expression	2017-02-24 17:46:56 -08:00
nsproxy.c
padata.c
panic.c	Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables	2018-06-14 12:21:18 +09:00
params.c
pid.c
pid_namespace.c
profile.c
ptrace.c
range.c
reboot.c
relay.c	kernel/relay.c: change return type to vm_fault_t	2018-06-15 07:55:24 +09:00
resource.c	libnvdimm for 4.18	2018-06-08 17:21:52 -07:00
rseq.c	rseq: uapi: Declare rseq_cs field as union, update includes	2018-07-10 22:18:52 +02:00
seccomp.c	audit/stable-4.18 PR 20180605	2018-06-06 16:34:00 -07:00
signal.c	signal: Remove no longer required irqsave/restore	2018-06-10 06:14:01 +02:00
smp.c	smp/core: Use lockdep to assert IRQs are disabled/enabled	2017-11-08 11:13:50 +01:00
smpboot.c	smpboot: Remove cpumask from the API	2018-07-03 09:20:44 +02:00
smpboot.h
softirq.c	softirq: Reorder trace_softirqs_on to prevent lockdep splat	2018-06-21 15:12:43 -04:00
stacktrace.c
stop_machine.c	Linux 4.17-rc5	2018-05-15 08:10:50 +02:00
sys.c	mm: introduce arg_lock to protect arg_start|end and env_start|end in mm_struct	2018-06-07 17:34:34 -07:00
sys_ni.c	Merge branch 'core-rseq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-06-10 10:17:09 -07:00
sysctl.c	treewide: kzalloc() -> kcalloc()	2018-06-12 16:19:22 -07:00
sysctl_binary.c
task_work.c
taskstats.c
test_kprobes.c
torture.c	rcu: Rename cond_resched_rcu_qs() to cond_resched_tasks_rcu_qs()	2018-05-15 10:27:29 -07:00
tracepoint.c	tracepoints: Fix the descriptions of tracepoint_probe_register{_prio}	2018-05-28 12:49:51 -04:00
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
uid16.c
uid16.h
umh.c	umh: fix race condition	2018-06-07 16:56:28 -04:00
up.c
user-return-notifier.c	scheduler: Replace __get_cpu_var with this_cpu_ptr	2014-08-26 13:45:45 -04:00
user.c
user_namespace.c	treewide: kmalloc() -> kmalloc_array()	2018-06-12 16:19:22 -07:00
utsname.c
utsname_sysctl.c
watchdog.c	watchdog/softlockup: Fix cpu_stop_queue_work() double-queue bug	2018-07-15 23:51:19 +02:00
watchdog_hld.c
workqueue.c	treewide: kzalloc() -> kcalloc()	2018-06-12 16:19:22 -07:00
workqueue_internal.h	workqueue: Set worker->desc to workqueue name by default	2018-05-18 08:47:13 -07:00