syzbot


INFO: task hung in exit_aio

Status: premoderation: reported on 2025/06/23 14:39
Reported-by: syzbot+48826df133b634817a62@syzkaller.appspotmail.com
First crash: 26d, last: 1h21m
Similar bugs (5)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in exit_aio (4) fs 1 6 218d 284d 0/29 auto-obsoleted due to no activity on 2025/03/13 05:51
android-414 INFO: task hung in exit_aio 1 3 2268d 2269d 0/1 auto-closed as invalid on 2019/10/25 08:40
upstream INFO: task hung in exit_aio (2) fs 1 3 1345d 1423d 0/29 closed as invalid on 2022/02/07 19:09
upstream INFO: task hung in exit_aio (3) fs 1 1 378d 378d 0/29 auto-obsoleted due to no activity on 2024/10/04 00:29
upstream INFO: task hung in exit_aio fs 1 C 17519 2163d 2778d 0/29 closed as dup on 2018/04/08 22:50

Sample crash report:
INFO: task syz.1.5095:15939 blocked for more than 122 seconds.
      Not tainted 6.12.30-syzkaller-g73009db42b37 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.5095      state:D stack:0     pid:15939 tgid:15938 ppid:12167  flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5945 [inline]
 __schedule+0x132b/0x1e00 kernel/sched/core.c:7789
 __schedule_loop kernel/sched/core.c:7870 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7885
 schedule_timeout+0xb2/0x3a0 kernel/time/timer.c:2595
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common kernel/sched/completion.c:116 [inline]
 wait_for_common+0x359/0x630 kernel/sched/completion.c:127
 wait_for_completion+0x1c/0x40 kernel/sched/completion.c:148
 exit_aio+0x2df/0x3b0 fs/aio.c:927
 __mmput+0x30/0x320 kernel/fork.c:1345
 mmput+0x55/0x170 kernel/fork.c:1371
 exit_mm kernel/exit.c:574 [inline]
 do_exit+0x910/0x2630 kernel/exit.c:931
 do_group_exit+0x22a/0x300 kernel/exit.c:1094
 get_signal+0x139d/0x14f0 kernel/signal.c:2934
 arch_do_signal_or_restart+0x96/0x720 arch/x86/kernel/signal.c:337

Crashes (11):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/07/19 20:29 android16-6.12 73009db42b37 7117feec .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust INFO: task hung in exit_aio
2025/07/17 12:49 android16-6.12 e973ddb125a8 0d1223f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust INFO: task hung in exit_aio
2025/07/13 23:40 android16-6.12 21ed84930c16 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust INFO: task hung in exit_aio
2025/07/11 07:42 android16-6.12 5bbd30a60b96 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust INFO: task hung in exit_aio
2025/07/06 02:00 android16-6.12 e2bf362ee23b 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust INFO: task hung in exit_aio
2025/07/05 10:41 android16-6.12 e2bf362ee23b 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust INFO: task hung in exit_aio
2025/07/05 03:31 android16-6.12 e2bf362ee23b d869b261 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust INFO: task hung in exit_aio
2025/07/02 09:04 android16-6.12 c40c54e66959 bc80e4f0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust INFO: task hung in exit_aio
2025/06/26 04:21 android16-6.12 22d634eb24e3 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust INFO: task hung in exit_aio
2025/06/25 04:50 android16-6.12 94ce385c22d5 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust INFO: task hung in exit_aio
2025/06/23 14:38 android16-6.12 5bf4b91e3333 d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust INFO: task hung in exit_aio
* Struck through repros no longer work on HEAD.