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INFO: task hung in caif_exit_net (5)

Status: auto-obsoleted due to no activity on 2025/04/01 16:47
Subsystems: net
[Documentation on labels]
First crash: 280d, last: 199d
Similar bugs (4)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in caif_exit_net (3) net 1 1 982d 982d 0/29 auto-obsoleted due to no activity on 2023/02/10 18:53
upstream INFO: task hung in caif_exit_net (2) net 1 1 1370d 1370d 0/29 auto-closed as invalid on 2022/01/16 13:12
upstream INFO: task hung in caif_exit_net (4) net 1 6 397d 424d 0/29 auto-obsoleted due to no activity on 2024/09/16 03:37
upstream INFO: task hung in caif_exit_net net 1 1 1774d 1774d 0/29 auto-closed as invalid on 2020/12/08 10:12

Sample crash report:
INFO: task kworker/u8:6:1329 blocked for more than 233 seconds.
      Not tainted 6.13.0-rc3-syzkaller-00180-g4f619d518db9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:6    state:D stack:21264 pid:1329  tgid:1329  ppid:2      flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x1850/0x4c30 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6848
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
 __mutex_lock_common kernel/locking/mutex.c:665 [inline]
 __mutex_lock+0x7e7/0xee0 kernel/locking/mutex.c:735
 caif_exit_net+0x6f/0x4a0 net/caif/caif_dev.c:528

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/01/01 16:40 net 4f619d518db9 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in caif_exit_net
2024/10/18 21:48 net-next 6d858708d465 cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in caif_exit_net
2024/10/13 02:39 net-next c531f2269a53 084d8178 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in caif_exit_net
* Struck through repros no longer work on HEAD.