syzbot


INFO: task hung in netdev_run_todo

Status: auto-obsoleted due to no activity on 2023/03/13 17:45
Reported-by: syzbot+afed97c8d73896c7b2de@syzkaller.appspotmail.com
First crash: 515d, last: 515d
Similar bugs (9)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: task hung in netdev_run_todo (3) 15 522d 838d 0/1 auto-obsoleted due to no activity on 2023/03/07 08:19
upstream INFO: task hung in netdev_run_todo net 12 1696d 2251d 0/26 closed as invalid on 2019/10/23 07:29
linux-4.19 INFO: task hung in netdev_run_todo (2) 3 1329d 1377d 0/1 auto-closed as invalid on 2020/12/20 04:57
android-44 INFO: task hung in netdev_run_todo 1 2190d 2190d 0/2 auto-closed as invalid on 2019/02/22 12:49
linux-4.19 INFO: task hung in netdev_run_todo 1 1655d 1655d 0/1 auto-closed as invalid on 2020/01/29 06:48
linux-5.15 INFO: task hung in netdev_run_todo 1 168d 168d 0/3 auto-obsoleted due to no activity on 2024/02/04 09:09
upstream INFO: task hung in netdev_run_todo (2) staging wireguard usb C error 241 59d 1215d 0/26 upstream: reported C repro on 2020/12/13 16:23
android-49 INFO: task hung in netdev_run_todo 1 2183d 2182d 0/3 auto-closed as invalid on 2019/02/22 14:57
upstream INFO: task can't die in netdev_run_todo net syz error 2 938d 1331d 0/26 auto-obsoleted due to no activity on 2023/04/16 04:59

Sample crash report:
INFO: task syz-executor.2:18070 blocked for more than 140 seconds.
      Not tainted 4.14.299-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2  D28304 18070   8033 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2811 [inline]
 __schedule+0x88b/0x1de0 kernel/sched/core.c:3387
 schedule+0x8d/0x1b0 kernel/sched/core.c:3431
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489
 __mutex_lock_common kernel/locking/mutex.c:833 [inline]
 __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
 netdev_run_todo+0x20e/0xad0 net/core/dev.c:7934
 vlan_ioctl_handler+0x150/0xcb0 net/8021q/vlan.c:618

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/11/13 17:44 linux-4.14.y e911713e40ca 7ba4d859 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 INFO: task hung in netdev_run_todo
* Struck through repros no longer work on HEAD.