INFO: task hung in kernfs_iop_get

INFO: task hung in kernfs_iop_get_link (2)

Status: auto-obsoleted due to no activity on 2024/11/25 11:04
Subsystems: kernfs
[Documentation on labels]
First crash: 477d, last: 477d

▶ ▼ Similar bugs (1)

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	INFO: task hung in kernfs_iop_get_link kernfs	1				1	2363d	2363d	0/29	auto-closed as invalid on 2019/10/27 12:01

Sample crash report:

INFO: task udevd:4683 blocked for more than 152 seconds.
      Not tainted 6.11.0-next-20240926-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D stack:21504 pid:4683  tgid:4683  ppid:1      flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x1895/0x4b30 kernel/sched/core.c:6675
 __schedule_loop kernel/sched/core.c:6752 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6767
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6824
 rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
 __down_read_common kernel/locking/rwsem.c:1248 [inline]
 __down_read kernel/locking/rwsem.c:1261 [inline]
 down_read+0x705/0xa40 kernel/locking/rwsem.c:1526
 kernfs_getlink fs/kernfs/symlink.c:119 [inline]
 kernfs_iop_get_link+0x12d/0x5a0 fs/kernfs/symlink.c:138
 vfs_readlink+0x16e/0x3b0 fs/namei.c:5276
 do_readlinkat+0x249/0x3a0 fs/stat.c:589

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2024/09/26 10:53	linux-next	92fc9636d147	0d19f247	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	INFO: task hung in kernfs_iop_get_link

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