syzbot


INFO: task hung in raw_release

Status: auto-obsoleted due to no activity on 2024/09/13 05:01
Reported-by: syzbot+815fd3ad10e80ef248a0@syzkaller.appspotmail.com
First crash: 152d, last: 152d
Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: task hung in raw_release 1 1615d 1615d 0/1 auto-closed as invalid on 2020/09/30 10:18
upstream INFO: task hung in raw_release can 1388 1224d 1762d 0/28 closed as dup on 2021/06/26 09:46
upstream INFO: task hung in raw_release (2) can 47 99d 145d 0/28 closed as invalid on 2024/08/26 16:08
linux-6.1 INFO: task hung in raw_release 3 148d 163d 0/3 auto-obsoleted due to no activity on 2024/09/16 15:07
linux-4.19 INFO: task hung in raw_release (2) syz error 4 1300d 1405d 0/1 upstream: reported syz repro on 2020/12/29 11:35

Sample crash report:
INFO: task syz-executor.1:5890 blocked for more than 143 seconds.
      Not tainted 5.15.160-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:25208 pid: 5890 ppid:  3523 flags:0x00004006
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
 raw_release+0x1b4/0x870 net/can/raw.c:388
 __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
 get_signal+0x143a/0x14e0 kernel/signal.c:2661
 arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/05 05:00 linux-5.15.y c61bd26ae81a e1e2c66e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in raw_release
* Struck through repros no longer work on HEAD.