syzbot


INFO: task hung in tunnel_key_exit_net (2)

Status: auto-obsoleted due to no activity on 2024/09/18 19:33
Subsystems: net
[Documentation on labels]
First crash: 229d, last: 222d
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: task hung in tunnel_key_exit_net 1 1638d 1638d 0/1 auto-closed as invalid on 2020/12/02 03:23
upstream INFO: task hung in tunnel_key_exit_net net syz 8 2119d 2495d 0/28 closed as dup on 2018/03/31 15:45
linux-4.19 INFO: task hung in tunnel_key_exit_net (2) 6 1122d 1352d 0/1 auto-closed as invalid on 2022/05/02 05:35

Sample crash report:
INFO: task kworker/u8:0:11 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc2-syzkaller-00761-g3ec8d7572a69 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:0    state:D stack:23184 pid:11    tgid:11    ppid:2      flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 tc_action_net_exit include/net/act_api.h:173 [inline]
 tunnel_key_exit_net+0x30/0x100 net/sched/act_tunnel_key.c:856
 ops_exit_list net/core/net_namespace.c:178 [inline]
 cleanup_net+0x89d/0xcc0 net/core/net_namespace.c:640
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
INFO: task kworker/0:2:57 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc2-syzkaller-00761-g3ec8d7572a69 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/20 19:30 net-next 3ec8d7572a69 dac2aa43 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in tunnel_key_exit_net
2024/06/13 13:06 linux-next a957267fa7e9 2aa5052f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in tunnel_key_exit_net
* Struck through repros no longer work on HEAD.