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: 615d, last: 612d
▶ ▼ Similar bugs (18)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in devinet_ioctl (7) net 1 31 536d 543d 0/29 closed as invalid on 2025/04/18 16:40
upstream INFO: task hung in devinet_ioctl (8) net 1 syz error 7 430d 462d 0/29 closed as invalid on 2025/07/31 08:04
linux-6.1 INFO: task hung in devinet_ioctl 1 1 1252d 1252d 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 1081d 1081d 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 770d 841d 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 1680d 1809d 0/29 closed as invalid on 2022/02/07 19:19
linux-6.1 INFO: task hung in devinet_ioctl (5) 1 1 474d 474d 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 156d 164d 0/2 auto-obsoleted due to no activity on 2026/07/18 18:19
upstream INFO: task hung in devinet_ioctl net 1 1 2884d 2884d 0/29 auto-closed as invalid on 2019/04/18 15:55
linux-5.15 INFO: task hung in devinet_ioctl (2) 1 3 937d 950d 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 54d 54d 0/3 upstream: reported on 2026/07/20 16:56
upstream INFO: task hung in devinet_ioctl (3) net 1 825 915d 1565d 0/29 closed as invalid on 2024/03/11 20:24
linux-5.15 INFO: task hung in devinet_ioctl (3) 1 3 823d 837d 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 914d 914d 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 5 15d 364d 0/3 upstream: reported syz repro on 2025/09/13 16:51
linux-5.15 INFO: task hung in devinet_ioctl (4) 1 1 637d 637d 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 795d 821d 26/29 fixed on 2024/07/09 19:14
linux-5.15 INFO: task hung in devinet_ioctl 1 1 1161d 1161d 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.