syzbot

 sign-in | mailing list | source | docs
🐞 Open [717]
🐞 Fixed [181]
🐞 Invalid [640]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
💬 Send us feedback

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: 1079d, last: 1079d
▶ ▼ Similar bugs (14)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: task hung in netdev_run_todo (3) 1 15 1085d 1401d 0/1 auto-obsoleted due to no activity on 2023/03/07 08:19
linux-6.6 INFO: task hung in netdev_run_todo 1 1 52d 52d 0/2 upstream: reported on 2025/09/05 15:00
upstream INFO: task hung in netdev_run_todo net 1 12 2259d 2814d 0/29 closed as invalid on 2019/10/23 07:29
linux-4.19 INFO: task hung in netdev_run_todo (2) 1 3 1892d 1940d 0/1 auto-closed as invalid on 2020/12/20 04:57
android-44 INFO: task hung in netdev_run_todo 1 1 2753d 2753d 0/2 auto-closed as invalid on 2019/02/22 12:49
upstream INFO: task hung in netdev_run_todo (4) wireguard 1 635 23h40m 383d 0/29 upstream: reported on 2024/10/09 19:06
linux-4.19 INFO: task hung in netdev_run_todo 1 1 2218d 2218d 0/1 auto-closed as invalid on 2020/01/29 06:48
upstream INFO: task hung in netdev_run_todo (3) net 1 24 496d 534d 0/29 auto-obsoleted due to no activity on 2024/08/07 04:24
linux-5.15 INFO: task hung in netdev_run_todo 1 1 731d 731d 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 1 C error 241 622d 1779d 0/29 auto-obsoleted due to no activity on 2024/05/05 22:51
android-49 INFO: task hung in netdev_run_todo 1 1 2746d 2746d 0/3 auto-closed as invalid on 2019/02/22 14:57
android-6-12 INFO: task hung in netdev_run_todo 1 153 4h23m 127d 0/1 premoderation: reported on 2025/06/22 07:19
linux-5.15 INFO: task hung in netdev_run_todo (2) 1 54 344d 525d 0/3 auto-obsoleted due to no activity on 2025/01/26 20:30
upstream INFO: task can't die in netdev_run_todo net 1 syz error 2 1501d 1894d 0/29 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.