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INFO: task hung in wg_netns_pre_exit (5)

Status: upstream: reported on 2024/09/25 23:05
Subsystems: wireguard
[Documentation on labels]
Reported-by: syzbot+f2fbf7478a35a94c8b7c@syzkaller.appspotmail.com
First crash: 164d, last: 7d09h
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [wireguard?] INFO: task hung in wg_netns_pre_exit (5) 0 (1) 2024/09/25 23:05
▶ ▼ Similar bugs (6)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in wg_netns_pre_exit wireguard 3 1466d 1540d 0/28 auto-closed as invalid on 2021/03/15 22:17
upstream INFO: task hung in wg_netns_pre_exit (2) wireguard 39 1132d 1156d 0/28 auto-closed as invalid on 2022/03/15 05:14
linux-5.15 INFO: task hung in wg_netns_pre_exit 6 98d 211d 0/3 upstream: reported on 2024/05/24 01:54
upstream INFO: task hung in wg_netns_pre_exit (4) wireguard 127 165d 205d 26/28 fixed on 2024/07/09 19:14
upstream INFO: task hung in wg_netns_pre_exit (3) wireguard 4 485d 616d 0/28 auto-obsoleted due to no activity on 2023/11/21 16:36
linux-6.1 INFO: task hung in wg_netns_pre_exit 3 183d 213d 0/3 auto-obsoleted due to no activity on 2024/09/28 16:36

Sample crash report:
INFO: task kworker/u8:11:13576 blocked for more than 145 seconds.
      Not tainted 6.13.0-rc1-syzkaller-00025-gfeffde684ac2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:11   state:D stack:24272 pid:13576 tgid:13576 ppid:2      flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x1850/0x4c30 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6848
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
 __mutex_lock_common kernel/locking/mutex.c:665 [inline]
 __mutex_lock+0x7e7/0xee0 kernel/locking/mutex.c:735
 wg_netns_pre_exit+0x1f/0x1e0 drivers/net/wireguard/device.c:415
 ops_pre_exit_list net/core/net_namespace.c:162 [inline]
 cleanup_net+0x615/0xcc0 net/core/net_namespace.c:612
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310

Crashes (344):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/12/05 16:01 upstream feffde684ac2 6e50d07b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/12/03 20:21 upstream ceb8bf2ceaa7 578925bc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in wg_netns_pre_exit
2024/12/01 02:39 upstream cfd47302ac64 68914665 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/11/28 11:49 upstream b86545e02e8c 5df23865 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in wg_netns_pre_exit
2024/11/17 19:39 upstream f66d6acccbc0 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in wg_netns_pre_exit
2024/11/17 02:50 upstream e8bdb3c8be08 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/11/16 22:05 upstream e8bdb3c8be08 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/11/10 17:34 upstream de2f378f2b77 6b856513 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in wg_netns_pre_exit
2024/11/07 09:27 upstream 7758b206117d df3dc63b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in wg_netns_pre_exit
2024/11/03 02:18 upstream 11066801dd4b f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/11/01 06:55 upstream 6c52d4da1c74 96eb609f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in wg_netns_pre_exit
2024/10/31 19:00 upstream 0fc810ae3ae1 96eb609f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in wg_netns_pre_exit
2024/10/30 17:30 upstream c1e939a21eb1 66aeb999 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in wg_netns_pre_exit
2024/10/29 08:57 upstream e42b1a9a2557 66aeb999 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in wg_netns_pre_exit
2024/10/28 11:32 upstream 819837584309 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/28 01:38 upstream 284a2f899676 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in wg_netns_pre_exit
2024/10/25 15:49 upstream ae90f6a6170d 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in wg_netns_pre_exit
2024/10/19 18:45 upstream 9197b73fd7bb cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/18 09:43 upstream 4d939780b705 666f77ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/17 10:05 upstream c964ced77262 666f77ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in wg_netns_pre_exit
2024/10/17 08:16 upstream c964ced77262 666f77ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/17 01:44 upstream c964ced77262 666f77ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/16 21:51 upstream 2f87d0916ce0 666f77ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/16 04:55 upstream 2f87d0916ce0 bde2d81c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in wg_netns_pre_exit
2024/09/25 22:28 upstream aa486552a110 349a68c4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/09/21 22:55 upstream 88264981f208 6f888b75 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in wg_netns_pre_exit
2024/09/11 02:57 upstream 8d8d276ba2fb 79eef296 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in wg_netns_pre_exit
2024/11/28 22:12 upstream b86545e02e8c 5df23865 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in wg_netns_pre_exit
2024/11/28 15:11 upstream b86545e02e8c 5df23865 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in wg_netns_pre_exit
2024/10/27 02:57 upstream 850925a8133c 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in wg_netns_pre_exit
2024/10/17 23:15 upstream 6efbea77b390 666f77ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in wg_netns_pre_exit
2024/11/06 05:22 net 9eaff63bfb59 3a465482 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/12/14 05:23 net-next 2c27c7663390 7cbfbb3a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/11/01 02:49 net-next 157a4881225b 96eb609f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/28 05:48 net-next 6d858708d465 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/27 00:57 net-next 6d858708d465 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/25 18:46 net-next 6d858708d465 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/25 11:00 net-next 6d858708d465 c79b8ca5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/25 06:57 net-next 6d858708d465 c79b8ca5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/25 05:14 net-next 6d858708d465 c79b8ca5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/24 21:37 net-next 6d858708d465 9fc8fe02 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/24 04:48 net-next 6d858708d465 15fa2979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/23 22:29 net-next 6d858708d465 15fa2979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/23 13:18 net-next 6d858708d465 15fa2979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/23 06:09 net-next 6d858708d465 15fa2979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/21 08:11 net-next 6d858708d465 cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/20 00:28 net-next 6d858708d465 cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/18 20:51 net-next 6d858708d465 cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/18 18:39 net-next 6d858708d465 cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/18 07:24 net-next 6d858708d465 666f77ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/17 18:17 net-next 6d858708d465 666f77ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/17 13:04 net-next 6d858708d465 666f77ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/17 06:55 net-next 6d858708d465 666f77ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/10/16 23:29 net-next 6d858708d465 666f77ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in wg_netns_pre_exit
2024/11/23 15:57 linux-next cfba9f07a1d6 68da6d95 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in wg_netns_pre_exit
* Struck through repros no longer work on HEAD.