INFO: task hung in rcu_is

INFO: task hung in rcu_is_watching (2)

Status: auto-obsoleted due to no activity on 2025/02/28 17:14
Subsystems: kernel
[Documentation on labels]
First crash: 372d, last: 372d

▶ ▼ Similar bugs (2)

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	INFO: task hung in rcu_is_watching (3) kernel	1				3	98d	109d	0/29	auto-obsoleted due to no activity on 2025/11/29 19:41
upstream	INFO: task hung in rcu_is_watching kernel	1				1	482d	482d	0/29	auto-obsoleted due to no activity on 2024/11/10 17:08

Sample crash report:

INFO: task syz-executor:8961 blocked for more than 176 seconds.
      Not tainted 6.12.0-syzkaller-11677-g2ba9f676d0a2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21280 pid:8961  tgid:8961  ppid:8949   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x1850/0x4c30 kernel/sched/core.c:6756
 rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
 rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:737

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2024/11/30 17:07	upstream	2ba9f676d0a2	68914665	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce	INFO: task hung in rcu_is_watching

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