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INFO: task hung in dev_ioctl (9)

Status: auto-obsoleted due to no activity on 2026/04/10 18:17
Subsystems: net
[Documentation on labels]
First crash: 156d, last: 156d
▶ ▼ Similar bugs (16)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.6 INFO: task hung in dev_ioctl 1 1 60d 60d 0/2 upstream: reported on 2026/04/17 10:38
upstream INFO: task hung in dev_ioctl (4) net 1 1 1855d 1855d 0/29 auto-closed as invalid on 2021/08/15 15:56
linux-4.14 INFO: task hung in dev_ioctl 1 1 1519d 1519d 0/1 auto-closed as invalid on 2022/08/17 13:11
android-49 INFO: task hung in dev_ioctl 1 1 2900d 2900d 0/3 auto-closed as invalid on 2019/02/22 12:59
upstream INFO: task hung in dev_ioctl (2) net 1 1 2614d 2614d 0/29 closed as invalid on 2019/05/08 13:05
android-414 INFO: task hung in dev_ioctl 1 2 2817d 2838d 0/1 auto-closed as invalid on 2019/03/27 22:33
android-414 INFO: task hung in dev_ioctl (2) 1 1 2390d 2390d 0/1 auto-closed as invalid on 2020/03/28 22:15
linux-6.1 INFO: task hung in dev_ioctl 1 3 729d 746d 0/3 auto-obsoleted due to no activity on 2024/09/25 07:18
upstream INFO: task hung in rtnetlink_rcv_msg net 1 C inconclusive inconclusive 1970 707d 2670d 26/29 fixed on 2024/07/09 19:14
upstream INFO: task hung in dev_ioctl (7) net 1 syz 6 464d 464d 0/29 closed as invalid on 2025/04/08 14:38
upstream INFO: task hung in dev_ioctl (8) net 1 1 275d 275d 0/29 auto-obsoleted due to no activity on 2025/12/12 19:44
upstream INFO: task hung in dev_ioctl net 1 2 2815d 2843d 0/29 auto-closed as invalid on 2019/03/30 00:48
upstream INFO: task hung in dev_ioctl (6) net 1 12 608d 633d 0/29 auto-obsoleted due to no activity on 2024/12/04 23:50
upstream INFO: task hung in dev_ioctl (3) net 1 7 1992d 2121d 0/29 auto-closed as invalid on 2021/04/01 04:28
linux-5.15 INFO: task hung in dev_ioctl 1 2 749d 755d 0/3 auto-obsoleted due to no activity on 2024/09/05 06:34
upstream INFO: task hung in dev_ioctl (5) net 1 20 1699d 1744d 0/29 auto-closed as invalid on 2022/01/19 01:57

Sample crash report:
INFO: task syz.2.1580:11728 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.1580      state:D stack:27608 pid:11728 tgid:11717 ppid:5837   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0x149b/0x4fd0 kernel/sched/core.c:6863
 __schedule_loop kernel/sched/core.c:6945 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6960
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7017
 __mutex_lock_common kernel/locking/mutex.c:692 [inline]
 __mutex_lock+0x7e6/0x1350 kernel/locking/mutex.c:776
 rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
 dev_ioctl+0x83c/0x1150 net/core/dev_ioctl.c:868
 sock_ioctl+0x719/0x790 net/socket.c:1300

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/01/10 18:17 net 7470a7a63dc1 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in dev_ioctl
* Struck through repros no longer work on HEAD.