INFO: task hung in idle_cull

INFO: task hung in idle_cull_fn

Status: auto-obsoleted due to no activity on 2024/08/30 14:38
Subsystems: kernel
[Documentation on labels]
First crash: 666d, last: 639d

▶ ▼ Similar bugs (2)

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	INFO: task hung in idle_cull_fn (3) kernel	1				2	112d	188d	0/29	auto-obsoleted due to no activity on 2026/02/07 21:13
upstream	INFO: task hung in idle_cull_fn (2) kernel	1				2	474d	514d	0/29	auto-obsoleted due to no activity on 2025/02/11 08:33

Sample crash report:

INFO: task kworker/u8:0:11 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc1-syzkaller-00267-gcc8ed4d0a848 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:0    state:D
 stack:23536 pid:11    tgid:11    ppid:2      flags:0x00004000
Workqueue: events_unbound idle_cull_fn

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 idle_cull_fn+0xd5/0x540 kernel/workqueue.c:2955
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312

Crashes (2):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2024/06/01 14:30	upstream	cc8ed4d0a848	3113787f	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-386	INFO: task hung in idle_cull_fn
2024/05/04 22:06	linux-next	9221b2819b8a	610f2a54	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	INFO: task hung in idle_cull_fn

* ~~Struck through~~ repros no longer work on HEAD.