INFO: task can't die in submit_bio

INFO: task can't die in submit_bio_wait

Status: auto-closed as invalid on 2021/10/30 22:05
Subsystems: block
[Documentation on labels]
Reported-by: syzbot+4a3e6acc53d47f048291@syzkaller.appspotmail.com
First crash: 1361d, last: 1361d

▶ ▼ Similar bugs (1)

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	INFO: task can't die in submit_bio_wait (2) block	C	error		3	1194d	1194d	0/28	upstream: reported C repro on 2022/02/14 12:41

Sample crash report:

INFO: task syz-executor.5:22740 can't die for more than 143 seconds.
task:syz-executor.5  state:D stack:24568 pid:22740 ppid:  7049 flags:0x00004004
Call Trace:
 context_switch kernel/sched/core.c:4955 [inline]
 __schedule+0x940/0x26f0 kernel/sched/core.c:6302
 schedule+0xd3/0x270 kernel/sched/core.c:6381
 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
 io_schedule_timeout+0xcb/0x140 kernel/sched/core.c:8392
 do_wait_for_common kernel/sched/completion.c:85 [inline]
 __wait_for_common kernel/sched/completion.c:106 [inline]
 wait_for_common_io kernel/sched/completion.c:123 [inline]
 wait_for_completion_io_timeout+0x171/0x280 kernel/sched/completion.c:191
 submit_bio_wait+0x158/0x230 block/bio.c:1253
 blkdev_issue_flush+0xd6/0x130 block/blk-flush.c:458

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2021/08/31 22:04	linux-next	52c7b727581f	7eb7e152	.config	console log	report			info		ci-upstream-linux-next-kasan-gce-root	INFO: task can't die in submit_bio_wait

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