syzbot


INFO: task hung in __tun_chr_ioctl (6)

Status: upstream: reported on 2024/06/07 06:03
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+26c7b4c3afe5450b3e15@syzkaller.appspotmail.com
First crash: 25d, last: 4d21h
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [net?] INFO: task hung in __tun_chr_ioctl (6) 0 (1) 2024/06/07 06:03
Similar bugs (7)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 INFO: task hung in __tun_chr_ioctl 7 4d17h 24d 0/3 upstream: reported on 2024/05/22 06:29
upstream INFO: task hung in __tun_chr_ioctl (4) net 1 437d 437d 0/27 auto-obsoleted due to no activity on 2023/07/04 14:00
upstream INFO: task hung in __tun_chr_ioctl net 2 2047d 2280d 0/27 closed as dup on 2018/03/19 06:35
linux-5.15 INFO: task hung in __tun_chr_ioctl 1 8d20h 8d20h 0/3 upstream: reported on 2024/06/06 21:32
upstream INFO: task hung in __tun_chr_ioctl (5) net 1 141d 141d 0/27 auto-obsoleted due to no activity on 2024/04/24 22:34
upstream INFO: task hung in __tun_chr_ioctl (3) net 2 629d 717d 0/27 auto-obsoleted due to no activity on 2023/01/03 09:42
upstream INFO: task hung in __tun_chr_ioctl (2) wireguard 1 1081d 1081d 0/27 auto-closed as invalid on 2021/09/27 23:09

Sample crash report:
INFO: task syz-executor.4:7398 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:27424 pid:7398  tgid:7397  ppid:5095   flags:0x00000006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x1796/0x49d0 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 __tun_chr_ioctl+0x48f/0x2400 drivers/net/tun.c:3110
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd55107cf69
RSP: 002b:00007fd550bff0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd5511b3f80 RCX: 00007fd55107cf69
RDX: 00000000200000c0 RSI: 00000000400454ca RDI: 0000000000000003
RBP: 00007fd5510da6fe R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fd5511b3f80 R15: 00007ffe1b6c15a8
 </TASK>
INFO: task syz-executor.4:7399 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc3-syzkaller #0

Crashes (45):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/10 06:47 upstream 83a7eefedc9b 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in __tun_chr_ioctl
2024/06/08 17:09 upstream dc772f8237f9 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in __tun_chr_ioctl
2024/06/05 22:08 upstream 71d7b52cc33b 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in __tun_chr_ioctl
2024/06/04 18:21 upstream 2ab795141095 a1feae05 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in __tun_chr_ioctl
2024/06/04 18:18 upstream 2ab795141095 a1feae05 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in __tun_chr_ioctl
2024/06/04 15:53 upstream 2ab795141095 a1feae05 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in __tun_chr_ioctl
2024/06/04 01:28 upstream f06ce441457d 0aba2352 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in __tun_chr_ioctl
2024/06/01 14:06 upstream cc8ed4d0a848 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in __tun_chr_ioctl
2024/06/01 03:19 upstream d8ec19857b09 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in __tun_chr_ioctl
2024/05/31 13:20 upstream 4a4be1ad3a6e 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in __tun_chr_ioctl
2024/05/31 10:13 upstream 4a4be1ad3a6e 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in __tun_chr_ioctl
2024/05/31 03:08 upstream 4a4be1ad3a6e 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in __tun_chr_ioctl
2024/05/28 21:23 upstream e0cce98fe279 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in __tun_chr_ioctl
2024/05/28 19:03 upstream e0cce98fe279 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in __tun_chr_ioctl
2024/05/28 08:48 upstream 2bfcfd584ff5 f550015e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in __tun_chr_ioctl
2024/05/25 18:41 upstream 56fb6f92854f a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in __tun_chr_ioctl
2024/05/25 18:39 upstream 56fb6f92854f a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in __tun_chr_ioctl
2024/05/20 23:31 upstream eb6a9339efeb c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in __tun_chr_ioctl
2024/06/10 20:19 net 5add2f728846 048c640a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __tun_chr_ioctl
2024/06/10 13:00 net 5add2f728846 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __tun_chr_ioctl
2024/06/01 16:33 net d8ec19857b09 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __tun_chr_ioctl
2024/05/27 22:17 net 52a2f0608366 f550015e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __tun_chr_ioctl
2024/05/26 17:17 net 0b4f5add9fa5 a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __tun_chr_ioctl
2024/05/25 15:54 net 0b4f5add9fa5 a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __tun_chr_ioctl
2024/05/25 02:58 net 0b4f5add9fa5 a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __tun_chr_ioctl
2024/05/22 18:10 net 30a92c9e3d6b 4d098039 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __tun_chr_ioctl
2024/06/10 11:49 net-next 28f961f9d5b7 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in __tun_chr_ioctl
2024/06/10 09:22 net-next 28f961f9d5b7 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in __tun_chr_ioctl
2024/06/08 10:05 net-next a99997323654 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in __tun_chr_ioctl
2024/06/03 20:59 net-next 93e30878f7ec 0aba2352 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in __tun_chr_ioctl
2024/06/03 07:07 net-next b5c089880723 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in __tun_chr_ioctl
2024/06/03 05:58 net-next b5c089880723 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in __tun_chr_ioctl
2024/05/28 20:18 net-next c30ff5f3aec3 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in __tun_chr_ioctl
2024/05/28 10:31 net-next 5233a55a5254 f550015e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in __tun_chr_ioctl
2024/05/28 02:43 net-next 5233a55a5254 f550015e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in __tun_chr_ioctl
2024/05/27 08:09 net-next 66ad4829ddd0 a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in __tun_chr_ioctl
2024/05/21 07:09 net-next 4b377b4868ef c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in __tun_chr_ioctl
2024/05/21 03:45 net-next 4b377b4868ef c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in __tun_chr_ioctl
2024/05/21 01:02 net-next 4b377b4868ef c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in __tun_chr_ioctl
2024/05/31 09:44 linux-next 0e1980c40b6e 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in __tun_chr_ioctl
2024/05/28 22:42 linux-next 6dc544b66971 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in __tun_chr_ioctl
2024/05/28 22:38 linux-next 6dc544b66971 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in __tun_chr_ioctl
2024/05/28 22:38 linux-next 6dc544b66971 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in __tun_chr_ioctl
2024/05/28 10:34 linux-next 6dc544b66971 f550015e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in __tun_chr_ioctl
* Struck through repros no longer work on HEAD.