syzbot


INFO: task hung in gtp_net_exit

Status: auto-obsoleted due to no activity on 2024/09/05 23:36
Reported-by: syzbot+5d60fb7f9d91994020a9@syzkaller.appspotmail.com
First crash: 189d, last: 189d
Similar bugs (6)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in gtp_net_exit (2) net 1 888d 888d 0/28 auto-closed as invalid on 2022/09/28 06:29
linux-4.19 INFO: task hung in gtp_net_exit (2) 1 769d 769d 0/1 auto-obsoleted due to no activity on 2023/02/23 20:45
linux-4.19 INFO: task hung in gtp_net_exit 1 1051d 1051d 0/1 auto-closed as invalid on 2022/05/17 19:13
upstream INFO: task hung in gtp_net_exit (4) wireless 1 464d 464d 0/28 auto-obsoleted due to no activity on 2023/11/26 08:03
upstream INFO: task hung in gtp_net_exit net 1 1526d 1526d 0/28 auto-closed as invalid on 2020/12/28 17:26
upstream INFO: task hung in gtp_net_exit (3) net 1 592d 592d 0/28 auto-obsoleted due to no activity on 2023/07/21 06:08

Sample crash report:
INFO: task kworker/u4:5:3630 blocked for more than 143 seconds.
      Not tainted 6.1.92-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:5    state:D stack:23096 pid:3630  ppid:2      flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0x142d/0x4550 kernel/sched/core.c:6558
 schedule+0xbf/0x180 kernel/sched/core.c:6634
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6693
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x6b9/0xd80 kernel/locking/mutex.c:747
 gtp_net_exit+0xb7/0x170 drivers/net/gtp.c:1885
 ops_exit_list net/core/net_namespace.c:172 [inline]
 cleanup_net+0x6ce/0xb60 net/core/net_namespace.c:604
 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
INFO: task kworker/1:9:3653 blocked for more than 143 seconds.
      Not tainted 6.1.92-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:9     state:D stack:23680 pid:3653  ppid:2      flags:0x00004000
Workqueue: events_power_efficient crda_timeout_work
Call Trace:

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/28 23:36 linux-6.1.y 88690811da69 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: task hung in gtp_net_exit
* Struck through repros no longer work on HEAD.