syzbot


INFO: task hung in ppp_exit_net (4)

Status: upstream: reported on 2024/06/13 09:12
Subsystems: ppp
[Documentation on labels]
Reported-by: syzbot+32bd764abd98eb40dea8@syzkaller.appspotmail.com
First crash: 63d, last: 19d
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [ppp?] INFO: task hung in ppp_exit_net (4) 0 (1) 2024/06/13 09:12
Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 INFO: task hung in ppp_exit_net 1 56d 56d 0/3 upstream: reported on 2024/05/27 17:46
upstream INFO: task hung in ppp_exit_net (2) ppp 1 504d 504d 0/27 auto-obsoleted due to no activity on 2023/06/04 05:29
upstream INFO: task hung in ppp_exit_net (3) ppp 1 342d 342d 0/27 auto-obsoleted due to no activity on 2023/11/13 21:08
upstream INFO: task hung in ppp_exit_net ppp 1 754d 754d 0/27 auto-closed as invalid on 2022/09/27 15:01
linux-6.1 INFO: task hung in ppp_exit_net 1 61d 61d 0/3 upstream: reported on 2024/05/22 06:26

Sample crash report:
INFO: task kworker/u8:1:12 blocked for more than 152 seconds.
      Not tainted 6.10.0-rc6-syzkaller-00061-ge9d22f7a6655 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:1    state:D
 stack:19824 pid:12    tgid:12    ppid:2      flags:0x00004000
Workqueue: netns cleanup_net

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a20 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
 ppp_exit_net+0xe3/0x3d0 drivers/net/ppp/ppp_generic.c:1131

Crashes (69):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/07/03 12:11 upstream e9d22f7a6655 409d975c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in ppp_exit_net
2024/06/20 22:11 upstream 2ccbdf43d5e7 dac2aa43 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in ppp_exit_net
2024/06/18 11:19 upstream 2ccbdf43d5e7 ce6011bc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in ppp_exit_net
2024/06/16 15:26 upstream 2ccbdf43d5e7 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in ppp_exit_net
2024/06/15 10:32 upstream 2ccbdf43d5e7 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in ppp_exit_net
2024/06/12 03:59 upstream 2ef5971ff345 4d75f4f7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in ppp_exit_net
2024/06/11 12:35 upstream 83a7eefedc9b c7d7d815 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in ppp_exit_net
2024/06/09 08:59 upstream 771ed66105de 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in ppp_exit_net
2024/06/09 05:23 upstream 061d1af7b030 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in ppp_exit_net
2024/06/05 14:35 upstream 32f88d65f01b e1e2c66e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in ppp_exit_net
2024/06/04 20:55 upstream 2ab795141095 a1feae05 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in ppp_exit_net
2024/06/04 18:40 upstream 2ab795141095 a1feae05 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in ppp_exit_net
2024/06/04 15:54 upstream 2ab795141095 a1feae05 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in ppp_exit_net
2024/06/19 15:19 net be27b8965297 41b7e219 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in ppp_exit_net
2024/06/18 16:41 net be27b8965297 639d6cdf .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in ppp_exit_net
2024/06/16 17:15 net be27b8965297 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in ppp_exit_net
2024/06/14 11:35 net be27b8965297 a9616ff5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in ppp_exit_net
2024/06/13 07:45 net be27b8965297 2aa5052f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in ppp_exit_net
2024/06/12 06:57 net 144ba8580bcb 4d75f4f7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in ppp_exit_net
2024/06/11 20:14 net 36534d3c5453 c7d7d815 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in ppp_exit_net
2024/06/10 13:01 net 5add2f728846 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in ppp_exit_net
2024/06/10 05:23 net 0579f2724904 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in ppp_exit_net
2024/06/07 00:53 net b0c9a2643541 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in ppp_exit_net
2024/06/02 17:45 net 33700a0c9b56 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in ppp_exit_net
2024/06/02 05:29 net 45c0a209dcf2 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in ppp_exit_net
2024/06/01 16:12 net d8ec19857b09 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in ppp_exit_net
2024/05/28 04:45 net 52a2f0608366 f550015e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in ppp_exit_net
2024/05/26 20:42 net 0b4f5add9fa5 a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in ppp_exit_net
2024/05/25 03:39 net 0b4f5add9fa5 a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in ppp_exit_net
2024/05/24 17:34 net 30a92c9e3d6b 8f98448e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in ppp_exit_net
2024/05/24 14:59 net 30a92c9e3d6b 8f98448e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in ppp_exit_net
2024/06/20 18:53 net-next 3ec8d7572a69 dac2aa43 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/20 15:14 net-next 3ec8d7572a69 dac2aa43 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/20 07:47 net-next 3ec8d7572a69 41b7e219 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/19 22:49 net-next 3ec8d7572a69 41b7e219 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/18 03:06 net-next 3ec8d7572a69 1f11cfd7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/17 01:17 net-next 3ec8d7572a69 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/16 21:48 net-next 3ec8d7572a69 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/16 19:45 net-next 3ec8d7572a69 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/15 23:01 net-next 3ec8d7572a69 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/15 04:49 net-next 3ec8d7572a69 8d849073 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/14 12:43 net-next 3ec8d7572a69 a9616ff5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/14 03:56 net-next 3ec8d7572a69 a9616ff5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/14 02:00 net-next 3ec8d7572a69 a9616ff5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/13 20:26 net-next 3ec8d7572a69 a9616ff5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/12 00:55 net-next bb678f01804c c7d7d815 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/11 01:50 net-next 2ba6d15786f6 048c640a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/10 03:26 net-next 924ee5317548 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/09 03:55 net-next a99997323654 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/04 12:15 net-next 83042ce9b7c3 a1feae05 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/04 11:36 net-next 83042ce9b7c3 a1feae05 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/04 10:52 net-next 83042ce9b7c3 a1feae05 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/03 07:20 net-next b5c089880723 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/02 05:24 net-next 6d9e9c36e1a6 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/01 19:10 net-next e19de2064fdf 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/01 02:14 net-next ccf23c916ca3 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/05/22 19:37 net-next 4b377b4868ef 4d098039 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/05/21 08:34 net-next 4b377b4868ef c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/05/21 08:18 net-next 4b377b4868ef c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/05/20 19:57 net-next 4b377b4868ef c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ppp_exit_net
2024/06/07 20:12 linux-next d35b2284e966 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in ppp_exit_net
2024/06/05 06:09 linux-next 234cb065ad82 e1e2c66e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in ppp_exit_net
2024/05/23 20:41 linux-next 124cfbcd6d18 8f98448e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in ppp_exit_net
* Struck through repros no longer work on HEAD.