INFO: task hung in devinet_ioctl (4)

Status: auto-obsoleted due to no activity on 2025/04/18 15:16
Reported-by: syzbot+3274fbd7652d4adbb72f@syzkaller.appspotmail.com
First crash: 654d, last: 651d
▶ ▼ Similar bugs (19)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in devinet_ioctl (7) net 1 31 574d 582d 0/29 closed as invalid on 2025/04/18 16:40
upstream INFO: task hung in devinet_ioctl (8) net 1 syz error 7 469d 501d 0/29 closed as invalid on 2025/07/31 08:04
linux-6.1 INFO: task hung in devinet_ioctl 1 1 1290d 1290d 0/3 auto-obsoleted due to no activity on 2023/08/07 17:54
linux-6.1 INFO: task hung in devinet_ioctl (2) 1 1 1120d 1120d 0/3 auto-obsoleted due to no activity on 2024/01/05 10:55
linux-6.1 INFO: task hung in devinet_ioctl (3) 1 3 809d 879d 0/3 auto-obsoleted due to no activity on 2024/11/11 06:30
upstream INFO: task hung in devinet_ioctl (2) net 1 27 1718d 1848d 0/29 closed as invalid on 2022/02/07 19:19
linux-6.1 INFO: task hung in devinet_ioctl (5) 1 1 513d 513d 0/3 auto-obsoleted due to no activity on 2025/09/03 12:59
linux-6.6 INFO: task hung in devinet_ioctl 1 2 194d 203d 0/2 auto-obsoleted due to no activity on 2026/07/18 18:19
upstream INFO: task hung in devinet_ioctl net 1 1 2923d 2923d 0/29 auto-closed as invalid on 2019/04/18 15:55
upstream INFO: task hung in devinet_ioctl (9) prio:normal net 1 syz error error 96 16d 327d 0/29 closed as invalid on 2026/10/06 01:41
linux-5.15 INFO: task hung in devinet_ioctl (2) 1 3 975d 988d 0/3 auto-obsoleted due to no activity on 2024/05/28 21:09
linux-5.15 INFO: task hung in devinet_ioctl (5) 1 1 93d 93d 0/3 upstream: reported on 2026/07/20 16:56
upstream INFO: task hung in devinet_ioctl (3) net 1 825 953d 1603d 0/29 closed as invalid on 2024/03/11 20:24
linux-5.15 INFO: task hung in devinet_ioctl (3) 1 3 862d 875d 0/3 auto-obsoleted due to no activity on 2024/09/19 07:29
upstream INFO: task hung in devinet_ioctl (4) net 1 5 952d 953d 25/29 fixed on 2024/04/12 18:02
linux-6.1 INFO: task hung in devinet_ioctl (6) origin:lts-only 1 syz inconclusive 7 18d 403d 0/3 upstream: reported syz repro on 2025/09/13 16:51
linux-5.15 INFO: task hung in devinet_ioctl (4) 1 1 675d 675d 0/3 auto-obsoleted due to no activity on 2025/03/24 18:20
upstream INFO: task hung in devinet_ioctl (5) net 1 59 833d 859d 26/29 fixed on 2024/07/09 19:14
linux-5.15 INFO: task hung in devinet_ioctl 1 1 1200d 1200d 0/3 auto-obsoleted due to no activity on 2023/10/17 09:29

Sample crash report:
INFO: task dhcpcd:3917 blocked for more than 144 seconds.
      Not tainted 6.1.123-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:dhcpcd          state:D stack:20648 pid:3917  ppid:3916   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5241 [inline]
 __schedule+0x143f/0x4570 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
 devinet_ioctl+0x2a5/0x1ae0 net/ipv4/devinet.c:1081
 inet_ioctl+0x32d/0x400 net/ipv4/af_inet.c:1008
 sock_do_ioctl+0x152/0x450 net/socket.c:1204

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/01/08 15:15 linux-6.1.y 7dc732d24ff7 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-perf INFO: task hung in devinet_ioctl
2025/01/05 14:45 linux-6.1.y 7dc732d24ff7 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: task hung in devinet_ioctl
* Struck through repros no longer work on HEAD.