INFO: task hung in ip6mr_sk_done

Status: auto-obsoleted due to no activity on 2024/09/26 11:39
Reported-by: syzbot+f3fd3f2be965a2701ee6@syzkaller.appspotmail.com
First crash: 787d, last: 765d
▶ ▼ Similar bugs (8)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in ip6mr_sk_done (2) net 1 1 2119d 2119d 0/29 auto-closed as invalid on 2021/01/01 18:48
android-49 INFO: task hung in ip6mr_sk_done 1 1 3009d 3009d 0/3 auto-closed as invalid on 2019/02/22 12:59
upstream INFO: task hung in ip6mr_sk_done (3) net 1 15 1737d 1775d 0/29 auto-closed as invalid on 2022/01/19 01:57
android-44 INFO: task hung in ip6mr_sk_done 1 1 3022d 3022d 0/2 auto-closed as invalid on 2019/02/22 13:39
linux-4.14 INFO: task hung in ip6mr_sk_done 1 1 2320d 2320d 0/1 auto-closed as invalid on 2020/07/14 17:23
upstream INFO: task hung in ip6mr_sk_done net 1 1 2220d 2220d 0/29 auto-closed as invalid on 2020/09/23 10:25
linux-5.15 INFO: task hung in ip6mr_sk_done (2) 1 1 50d 50d 0/3 upstream: reported on 2026/06/03 18:15
linux-4.19 INFO: task hung in ip6mr_sk_done 1 1 1653d 1653d 0/1 auto-closed as invalid on 2022/05/13 06:41

Sample crash report:
INFO: task syz-executor.0:3675 blocked for more than 143 seconds.
      Not tainted 5.15.161-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:24056 pid: 3675 ppid:  3526 flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5030 [inline]
 __schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
 schedule+0x11b/0x1f0 kernel/sched/core.c:6459
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6518
 __mutex_lock_common+0xe34/0x25a0 kernel/locking/mutex.c:669
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
 ip6mr_sk_done+0xa0/0x2a0 net/ipv6/ip6mr.c:1584
 rawv6_close+0x60/0x80 net/ipv6/raw.c:1206
 inet_release+0x174/0x1f0 net/ipv4/af_inet.c:434
 __sock_release net/socket.c:649 [inline]
 sock_close+0xcd/0x230 net/socket.c:1336
 __fput+0x3bf/0x890 fs/file_table.c:280
 task_work_run+0x129/0x1a0 kernel/task_work.c:164
 exit_task_work include/linux/task_work.h:32 [inline]
 do_exit+0x6a3/0x2480 kernel/exit.c:872

Crashes (9):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/18 11:38 linux-5.15.y 4878aadf2d15 639d6cdf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in ip6mr_sk_done
2024/06/13 02:12 linux-5.15.y c61bd26ae81a 2aa5052f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in ip6mr_sk_done
2024/06/12 14:07 linux-5.15.y c61bd26ae81a f815599d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in ip6mr_sk_done
2024/06/10 18:27 linux-5.15.y c61bd26ae81a 048c640a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in ip6mr_sk_done
2024/06/07 21:46 linux-5.15.y c61bd26ae81a 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in ip6mr_sk_done
2024/06/04 13:14 linux-5.15.y c61bd26ae81a 11f2afa5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in ip6mr_sk_done
2024/06/01 03:01 linux-5.15.y c61bd26ae81a 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in ip6mr_sk_done
2024/06/01 02:01 linux-5.15.y c61bd26ae81a 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in ip6mr_sk_done
2024/05/28 01:55 linux-5.15.y c61bd26ae81a f550015e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in ip6mr_sk_done
* Struck through repros no longer work on HEAD.