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* INFO: task hung in fsnotify_connector_destroy_workfn (2)
@ 2018-09-15  2:33 syzbot
  2018-09-15 16:42 ` Amir Goldstein
  2018-09-15 17:25 ` Tetsuo Handa
  0 siblings, 2 replies; 9+ messages in thread
From: syzbot @ 2018-09-15  2:33 UTC (permalink / raw)
  To: amir73il, jack, linux-fsdevel, linux-kernel, syzkaller-bugs

Hello,

syzbot found the following crash on:

HEAD commit:    11da3a7f84f1 Linux 4.19-rc3
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=141ffbca400000
kernel config:  https://syzkaller.appspot.com/x/.config?x=9917ff4b798e1a1e
dashboard link: https://syzkaller.appspot.com/bug?extid=6fb572170402d311dd39
compiler:       gcc (GCC) 8.0.1 20180413 (experimental)
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=136a60ae400000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+6fb572170402d311dd39@syzkaller.appspotmail.com

hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
INFO: task kworker/u4:1:23 blocked for more than 140 seconds.
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
       Not tainted 4.19.0-rc3+ #231
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/u4:1    D20760    23      2 0x80000000
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
Workqueue: events_unbound fsnotify_connector_destroy_workfn
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
Call Trace:
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  context_switch kernel/sched/core.c:2825 [inline]
  __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  schedule+0xfe/0x460 kernel/sched/core.c:3517
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  schedule_timeout+0x1cc/0x260 kernel/time/timer.c:1780
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  do_wait_for_common kernel/sched/completion.c:83 [inline]
  __wait_for_common kernel/sched/completion.c:104 [inline]
  wait_for_common kernel/sched/completion.c:115 [inline]
  wait_for_completion+0x427/0x8a0 kernel/sched/completion.c:136
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  __synchronize_srcu+0x184/0x230 kernel/rcu/srcutree.c:934
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  synchronize_srcu_expedited kernel/rcu/srcutree.c:959 [inline]
  synchronize_srcu+0x356/0x5ab kernel/rcu/srcutree.c:1010
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  fsnotify_connector_destroy_workfn+0x44/0xa0 fs/notify/mark.c:174
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  process_one_work+0xc90/0x1b90 kernel/workqueue.c:2153
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  worker_thread+0x17f/0x1390 kernel/workqueue.c:2296
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  kthread+0x35a/0x420 kernel/kthread.c:246
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
INFO: task kworker/u4:5:2763 blocked for more than 140 seconds.
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
       Not tainted 4.19.0-rc3+ #231
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
kworker/u4:5    D
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
13912  2763      2 0x80000000
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
Workqueue: events_unbound fsnotify_mark_destroy_workfn
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
Call Trace:
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  context_switch kernel/sched/core.c:2825 [inline]
  __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  schedule+0xfe/0x460 kernel/sched/core.c:3517
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  schedule_timeout+0x1cc/0x260 kernel/time/timer.c:1780
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  do_wait_for_common kernel/sched/completion.c:83 [inline]
  __wait_for_common kernel/sched/completion.c:104 [inline]
  wait_for_common kernel/sched/completion.c:115 [inline]
  wait_for_completion+0x427/0x8a0 kernel/sched/completion.c:136
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  __synchronize_srcu+0x184/0x230 kernel/rcu/srcutree.c:934
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  synchronize_srcu+0x440/0x5ab kernel/rcu/srcutree.c:1012
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  fsnotify_mark_destroy_workfn+0x1be/0x510 fs/notify/mark.c:772
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  process_one_work+0xc90/0x1b90 kernel/workqueue.c:2153
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  worker_thread+0x17f/0x1390 kernel/workqueue.c:2296
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  kthread+0x35a/0x420 kernel/kthread.c:246
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0

Showing all locks held in the system:
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
3 locks held by kworker/0:0/5:
3 locks held by kworker/1:0/19:
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
2 locks held by kworker/u4:1/23:
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  #0:
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
00000000a4cafcdc
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  (
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
(wq_completion)"events_unbound"
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
){+.+.}
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
, at: __write_once_size include/linux/compiler.h:215 [inline]
, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline]
, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline]
, at: set_work_data kernel/workqueue.c:617 [inline]
, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline]
, at: process_one_work+0xb43/0x1b90 kernel/workqueue.c:2124
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  #1: 00000000dfade95d
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  (connector_reaper_work){+.+.}, at: process_one_work+0xb9a/0x1b90  
kernel/workqueue.c:2128
5 locks held by kworker/u4:3/80:
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  #0:
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
000000009a5c59fb
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  ((wq_completion)"%s""netns"){+.+.}, at: __write_once_size  
include/linux/compiler.h:215 [inline]
  ((wq_completion)"%s""netns"){+.+.}, at: arch_atomic64_set  
arch/x86/include/asm/atomic64_64.h:34 [inline]
  ((wq_completion)"%s""netns"){+.+.}, at: atomic64_set  
include/asm-generic/atomic-instrumented.h:40 [inline]
  ((wq_completion)"%s""netns"){+.+.}, at: atomic_long_set  
include/asm-generic/atomic-long.h:59 [inline]
  ((wq_completion)"%s""netns"){+.+.}, at: set_work_data  
kernel/workqueue.c:617 [inline]
  ((wq_completion)"%s""netns"){+.+.}, at: set_work_pool_and_clear_pending  
kernel/workqueue.c:644 [inline]
  ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0xb43/0x1b90  
kernel/workqueue.c:2124
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  #1:
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
00000000191741b6
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  (
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
net_cleanup_work){+.+.}
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
, at: process_one_work+0xb9a/0x1b90 kernel/workqueue.c:2128
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  #2:
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
0000000081d8c4f5
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  (
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
pernet_ops_rwsem
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
){++++}
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
, at: cleanup_net+0x13f/0xb10 net/core/net_namespace.c:518
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  #3:
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
00000000cfddf12a
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  (
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
rtnl_mutex
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77
  #4:
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
00000000adc11da2
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  (
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock  
kernel/rcu/tree_exp.h:297 [inline]
rcu_preempt_state.exp_mutex){+.+.}, at:  
_synchronize_rcu_expedited+0x562/0xfd0 kernel/rcu/tree_exp.h:667
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
1 lock held by khungtaskd/954:
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  #0: 00000000665b7ca6 (
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
rcu_read_lock
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
){....}, at: debug_show_all_locks+0xd0/0x424 kernel/locking/lockdep.c:4436
2 locks held by kworker/u4:5/2763:
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  #0:
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
00000000a4cafcdc
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  (
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
(wq_completion)"events_unbound"
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
){+.+.}
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
, at: __write_once_size include/linux/compiler.h:215 [inline]
, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline]
, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline]
, at: set_work_data kernel/workqueue.c:617 [inline]
, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline]
, at: process_one_work+0xb43/0x1b90 kernel/workqueue.c:2124
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  #1:
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
0000000015cd874b
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  (
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
(reaper_work).work
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
){+.+.}
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
, at: process_one_work+0xb9a/0x1b90 kernel/workqueue.c:2128
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
3 locks held by kworker/0:2/2911:
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  #0:
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
0000000001d6b697
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  (
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
(wq_completion)"%s"("ipv6_addrconf")
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
){+.+.}
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
, at: __write_once_size include/linux/compiler.h:215 [inline]
, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline]
, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline]
, at: set_work_data kernel/workqueue.c:617 [inline]
, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline]
, at: process_one_work+0xb43/0x1b90 kernel/workqueue.c:2124
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  #1:
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
00000000c720eac4
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  (
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
(work_completion)(&(&ifa->dad_work)->work)
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
){+.+.}
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
, at: process_one_work+0xb9a/0x1b90 kernel/workqueue.c:2128
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  #2:
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
00000000cfddf12a
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  (
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
rtnl_mutex
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
){+.+.}
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
2 locks held by getty/5305:
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  #0:
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
000000005215db21
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  (
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
&tty->ldisc_sem
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
){++++}
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  #1:
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
000000001f1b258b
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  (
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
&ldata->atomic_read_lock
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
){+.+.}
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
2 locks held by getty/5306:
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  #0:
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
000000005e69ee83
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  (
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
&tty->ldisc_sem
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
){++++}
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
  #1: 0000000000b35791 (&ldata->atomic_read_lock
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
){+.+.}
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
2 locks held by getty/5307:
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  #0:
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
00000000a3e5fdcd
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  (
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
&tty->ldisc_sem
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
){++++}
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
  #1:
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
000000001af5ef30
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  (&ldata->atomic_read_lock){+.+.}
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
2 locks held by getty/5308:
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  #0:
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
000000008ef488bc
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  (
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
&tty->ldisc_sem
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
){++++}
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  #1:
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
000000007a5cab3d
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  (&ldata->atomic_read_lock
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
){+.+.}
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
2 locks held by getty/5309:
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  #0:
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
0000000008bab84e
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  (
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
&tty->ldisc_sem
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
){++++}
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  #1:
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
000000003db87bad
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  (
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
&ldata->atomic_read_lock
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
2 locks held by getty/5310:
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  #0:
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
00000000c01f0bf4
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
  (
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
&tty->ldisc_sem
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
){++++}
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  #1:
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
00000000590d31e5
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
  (
hid-generic 0000:0000:0000.0006: unknown main item tag

---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@googlegroups.com.

syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with  
syzbot.
syzbot can test patches for this bug, for details see:
https://goo.gl/tpsmEJ#testing-patches

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: INFO: task hung in fsnotify_connector_destroy_workfn (2)
  2018-09-15  2:33 INFO: task hung in fsnotify_connector_destroy_workfn (2) syzbot
@ 2018-09-15 16:42 ` Amir Goldstein
  2018-09-15 17:25 ` Tetsuo Handa
  1 sibling, 0 replies; 9+ messages in thread
From: Amir Goldstein @ 2018-09-15 16:42 UTC (permalink / raw)
  To: Jan Kara; +Cc: linux-fsdevel, syzkaller-bugs

On Sat, Sep 15, 2018 at 5:33 AM syzbot
<syzbot+6fb572170402d311dd39@syzkaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit:    11da3a7f84f1 Linux 4.19-rc3
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=141ffbca400000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=9917ff4b798e1a1e
> dashboard link: https://syzkaller.appspot.com/bug?extid=6fb572170402d311dd39
> compiler:       gcc (GCC) 8.0.1 20180413 (experimental)
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=136a60ae400000
>

FWIW, I was not able to reproduce, but not using exact same kconfig and commit

Thanks,
Amir.

> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+6fb572170402d311dd39@syzkaller.appspotmail.com
>
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> INFO: task kworker/u4:1:23 blocked for more than 140 seconds.
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>        Not tainted 4.19.0-rc3+ #231
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> kworker/u4:1    D20760    23      2 0x80000000
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> Workqueue: events_unbound fsnotify_connector_destroy_workfn
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> Call Trace:
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   context_switch kernel/sched/core.c:2825 [inline]
>   __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   schedule+0xfe/0x460 kernel/sched/core.c:3517
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   schedule_timeout+0x1cc/0x260 kernel/time/timer.c:1780
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   do_wait_for_common kernel/sched/completion.c:83 [inline]
>   __wait_for_common kernel/sched/completion.c:104 [inline]
>   wait_for_common kernel/sched/completion.c:115 [inline]
>   wait_for_completion+0x427/0x8a0 kernel/sched/completion.c:136
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   __synchronize_srcu+0x184/0x230 kernel/rcu/srcutree.c:934
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   synchronize_srcu_expedited kernel/rcu/srcutree.c:959 [inline]
>   synchronize_srcu+0x356/0x5ab kernel/rcu/srcutree.c:1010
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   fsnotify_connector_destroy_workfn+0x44/0xa0 fs/notify/mark.c:174
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   process_one_work+0xc90/0x1b90 kernel/workqueue.c:2153
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   worker_thread+0x17f/0x1390 kernel/workqueue.c:2296
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   kthread+0x35a/0x420 kernel/kthread.c:246
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> INFO: task kworker/u4:5:2763 blocked for more than 140 seconds.
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>        Not tainted 4.19.0-rc3+ #231
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> kworker/u4:5    D
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> 13912  2763      2 0x80000000
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> Workqueue: events_unbound fsnotify_mark_destroy_workfn
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> Call Trace:
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   context_switch kernel/sched/core.c:2825 [inline]
>   __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   schedule+0xfe/0x460 kernel/sched/core.c:3517
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   schedule_timeout+0x1cc/0x260 kernel/time/timer.c:1780
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   do_wait_for_common kernel/sched/completion.c:83 [inline]
>   __wait_for_common kernel/sched/completion.c:104 [inline]
>   wait_for_common kernel/sched/completion.c:115 [inline]
>   wait_for_completion+0x427/0x8a0 kernel/sched/completion.c:136
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   __synchronize_srcu+0x184/0x230 kernel/rcu/srcutree.c:934
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   synchronize_srcu+0x440/0x5ab kernel/rcu/srcutree.c:1012
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   fsnotify_mark_destroy_workfn+0x1be/0x510 fs/notify/mark.c:772
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   process_one_work+0xc90/0x1b90 kernel/workqueue.c:2153
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   worker_thread+0x17f/0x1390 kernel/workqueue.c:2296
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   kthread+0x35a/0x420 kernel/kthread.c:246
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>
> Showing all locks held in the system:
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> 3 locks held by kworker/0:0/5:
> 3 locks held by kworker/1:0/19:
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> 2 locks held by kworker/u4:1/23:
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   #0:
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> 00000000a4cafcdc
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   (
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> (wq_completion)"events_unbound"
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> ){+.+.}
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> , at: __write_once_size include/linux/compiler.h:215 [inline]
> , at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
> , at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline]
> , at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline]
> , at: set_work_data kernel/workqueue.c:617 [inline]
> , at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline]
> , at: process_one_work+0xb43/0x1b90 kernel/workqueue.c:2124
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   #1: 00000000dfade95d
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   (connector_reaper_work){+.+.}, at: process_one_work+0xb9a/0x1b90
> kernel/workqueue.c:2128
> 5 locks held by kworker/u4:3/80:
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   #0:
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> 000000009a5c59fb
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   ((wq_completion)"%s""netns"){+.+.}, at: __write_once_size
> include/linux/compiler.h:215 [inline]
>   ((wq_completion)"%s""netns"){+.+.}, at: arch_atomic64_set
> arch/x86/include/asm/atomic64_64.h:34 [inline]
>   ((wq_completion)"%s""netns"){+.+.}, at: atomic64_set
> include/asm-generic/atomic-instrumented.h:40 [inline]
>   ((wq_completion)"%s""netns"){+.+.}, at: atomic_long_set
> include/asm-generic/atomic-long.h:59 [inline]
>   ((wq_completion)"%s""netns"){+.+.}, at: set_work_data
> kernel/workqueue.c:617 [inline]
>   ((wq_completion)"%s""netns"){+.+.}, at: set_work_pool_and_clear_pending
> kernel/workqueue.c:644 [inline]
>   ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0xb43/0x1b90
> kernel/workqueue.c:2124
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   #1:
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> 00000000191741b6
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   (
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> net_cleanup_work){+.+.}
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> , at: process_one_work+0xb9a/0x1b90 kernel/workqueue.c:2128
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   #2:
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> 0000000081d8c4f5
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   (
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> pernet_ops_rwsem
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> ){++++}
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> , at: cleanup_net+0x13f/0xb10 net/core/net_namespace.c:518
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   #3:
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> 00000000cfddf12a
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   (
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> rtnl_mutex
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> ){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77
>   #4:
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> 00000000adc11da2
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   (
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock
> kernel/rcu/tree_exp.h:297 [inline]
> rcu_preempt_state.exp_mutex){+.+.}, at:
> _synchronize_rcu_expedited+0x562/0xfd0 kernel/rcu/tree_exp.h:667
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> 1 lock held by khungtaskd/954:
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   #0: 00000000665b7ca6 (
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> rcu_read_lock
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> ){....}, at: debug_show_all_locks+0xd0/0x424 kernel/locking/lockdep.c:4436
> 2 locks held by kworker/u4:5/2763:
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   #0:
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> 00000000a4cafcdc
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   (
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> (wq_completion)"events_unbound"
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> ){+.+.}
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> , at: __write_once_size include/linux/compiler.h:215 [inline]
> , at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
> , at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline]
> , at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline]
> , at: set_work_data kernel/workqueue.c:617 [inline]
> , at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline]
> , at: process_one_work+0xb43/0x1b90 kernel/workqueue.c:2124
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   #1:
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> 0000000015cd874b
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   (
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> (reaper_work).work
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> ){+.+.}
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> , at: process_one_work+0xb9a/0x1b90 kernel/workqueue.c:2128
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> 3 locks held by kworker/0:2/2911:
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   #0:
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> 0000000001d6b697
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   (
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> (wq_completion)"%s"("ipv6_addrconf")
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> ){+.+.}
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> , at: __write_once_size include/linux/compiler.h:215 [inline]
> , at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
> , at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline]
> , at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline]
> , at: set_work_data kernel/workqueue.c:617 [inline]
> , at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline]
> , at: process_one_work+0xb43/0x1b90 kernel/workqueue.c:2124
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   #1:
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> 00000000c720eac4
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   (
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> (work_completion)(&(&ifa->dad_work)->work)
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> ){+.+.}
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> , at: process_one_work+0xb9a/0x1b90 kernel/workqueue.c:2128
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   #2:
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> 00000000cfddf12a
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   (
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> rtnl_mutex
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> ){+.+.}
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> , at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> 2 locks held by getty/5305:
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   #0:
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> 000000005215db21
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   (
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> &tty->ldisc_sem
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> ){++++}
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> , at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   #1:
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> 000000001f1b258b
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   (
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> &ldata->atomic_read_lock
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> ){+.+.}
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> , at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> 2 locks held by getty/5306:
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   #0:
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> 000000005e69ee83
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   (
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> &tty->ldisc_sem
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> ){++++}
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> , at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
>   #1: 0000000000b35791 (&ldata->atomic_read_lock
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> ){+.+.}
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> , at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> 2 locks held by getty/5307:
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   #0:
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> 00000000a3e5fdcd
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   (
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> &tty->ldisc_sem
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> ){++++}
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> , at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
>   #1:
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> 000000001af5ef30
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   (&ldata->atomic_read_lock){+.+.}
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> , at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> 2 locks held by getty/5308:
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   #0:
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> 000000008ef488bc
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   (
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> &tty->ldisc_sem
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> ){++++}
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> , at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   #1:
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> 000000007a5cab3d
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   (&ldata->atomic_read_lock
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> ){+.+.}
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> , at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> 2 locks held by getty/5309:
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   #0:
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> 0000000008bab84e
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   (
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> &tty->ldisc_sem
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> ){++++}
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> , at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   #1:
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> 000000003db87bad
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   (
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> &ldata->atomic_read_lock
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> ){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> 2 locks held by getty/5310:
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   #0:
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> 00000000c01f0bf4
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
>   (
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> &tty->ldisc_sem
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> ){++++}
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> , at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   #1:
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> 00000000590d31e5
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0005: unknown main item tag 0x0
> hid-generic 0000:0000:0000.0006: unknown main item tag 0x0
>   (
> hid-generic 0000:0000:0000.0006: unknown main item tag
>
> ---
> This bug is generated by a bot. It may contain errors.
> See https://goo.gl/tpsmEJ for more information about syzbot.
> syzbot engineers can be reached at syzkaller@googlegroups.com.
>
> syzbot will keep track of this bug report. See:
> https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with
> syzbot.
> syzbot can test patches for this bug, for details see:
> https://goo.gl/tpsmEJ#testing-patches

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: INFO: task hung in fsnotify_connector_destroy_workfn (2)
  2018-09-15  2:33 INFO: task hung in fsnotify_connector_destroy_workfn (2) syzbot
  2018-09-15 16:42 ` Amir Goldstein
@ 2018-09-15 17:25 ` Tetsuo Handa
  2018-09-15 23:05   ` Amir Goldstein
  1 sibling, 1 reply; 9+ messages in thread
From: Tetsuo Handa @ 2018-09-15 17:25 UTC (permalink / raw)
  To: syzbot, amir73il, jack, syzkaller-bugs; +Cc: linux-fsdevel, linux-kernel

On 2018/09/15 11:33, syzbot wrote:
> Hello,
> 
> syzbot found the following crash on:
> 
> HEAD commit:    11da3a7f84f1 Linux 4.19-rc3
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=141ffbca400000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=9917ff4b798e1a1e
> dashboard link: https://syzkaller.appspot.com/bug?extid=6fb572170402d311dd39
> compiler:       gcc (GCC) 8.0.1 20180413 (experimental)
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=136a60ae400000
> 
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+6fb572170402d311dd39@syzkaller.appspotmail.com
> 

Since it kept printk()ing for at least 93 seconds, it might have kept for 150 seconds.

[  174.614333] hid-generic 0000:0000:0000.0003: unknown main item tag 0x0
[  268.196102] INFO: task kworker/u4:1:23 blocked for more than 140 seconds.

Since the reproducer is simple, this might be lockup due to continuous printk().
If syzbot can reliably reproduce this problem using the reproducer, try
ratelimiting printk().

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: INFO: task hung in fsnotify_connector_destroy_workfn (2)
  2018-09-15 17:25 ` Tetsuo Handa
@ 2018-09-15 23:05   ` Amir Goldstein
  2018-09-24 13:19     ` Jiri Kosina
  0 siblings, 1 reply; 9+ messages in thread
From: Amir Goldstein @ 2018-09-15 23:05 UTC (permalink / raw)
  To: penguin-kernel
  Cc: syzbot+6fb572170402d311dd39, Jan Kara, syzkaller-bugs,
	linux-fsdevel, linux-kernel, Jiri Kosina

On Sat, Sep 15, 2018 at 8:26 PM Tetsuo Handa
<penguin-kernel@i-love.sakura.ne.jp> wrote:
>
> On 2018/09/15 11:33, syzbot wrote:
> > Hello,
> >
> > syzbot found the following crash on:
> >
> > HEAD commit:    11da3a7f84f1 Linux 4.19-rc3
> > git tree:       upstream
> > console output: https://syzkaller.appspot.com/x/log.txt?x=141ffbca400000
> > kernel config:  https://syzkaller.appspot.com/x/.config?x=9917ff4b798e1a1e
> > dashboard link: https://syzkaller.appspot.com/bug?extid=6fb572170402d311dd39
> > compiler:       gcc (GCC) 8.0.1 20180413 (experimental)
> > syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=136a60ae400000
> >
> > IMPORTANT: if you fix the bug, please add the following tag to the commit:
> > Reported-by: syzbot+6fb572170402d311dd39@syzkaller.appspotmail.com
> >
>
> Since it kept printk()ing for at least 93 seconds, it might have kept for 150 seconds.
>
> [  174.614333] hid-generic 0000:0000:0000.0003: unknown main item tag 0x0
> [  268.196102] INFO: task kworker/u4:1:23 blocked for more than 140 seconds.
>
> Since the reproducer is simple, this might be lockup due to continuous printk().
> If syzbot can reliably reproduce this problem using the reproducer, try
> ratelimiting printk().

Right.. and I was able to reproduce after setting CONFIG_HID_GENERIC=y
but unless I am missing something, the core problem doesn't seem related to
fsnotify and $SUBJECT, so CCing HID maintainer.

Thanks,
Amir.

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: INFO: task hung in fsnotify_connector_destroy_workfn (2)
  2018-09-15 23:05   ` Amir Goldstein
@ 2018-09-24 13:19     ` Jiri Kosina
  2018-09-24 13:31       ` Dmitry Vyukov
  2018-09-25  8:55       ` Petr Mladek
  0 siblings, 2 replies; 9+ messages in thread
From: Jiri Kosina @ 2018-09-24 13:19 UTC (permalink / raw)
  To: Amir Goldstein
  Cc: penguin-kernel, syzbot+6fb572170402d311dd39, Jan Kara,
	syzkaller-bugs, linux-fsdevel, linux-kernel, Sergey Senozhatsky,
	Petr Mladek

On Sun, 16 Sep 2018, Amir Goldstein wrote:

> > > syzbot found the following crash on:
> > >
> > > HEAD commit:    11da3a7f84f1 Linux 4.19-rc3
> > > git tree:       upstream
> > > console output: https://syzkaller.appspot.com/x/log.txt?x=141ffbca400000
> > > kernel config:  https://syzkaller.appspot.com/x/.config?x=9917ff4b798e1a1e
> > > dashboard link: https://syzkaller.appspot.com/bug?extid=6fb572170402d311dd39
> > > compiler:       gcc (GCC) 8.0.1 20180413 (experimental)
> > > syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=136a60ae400000
> > >
> > > IMPORTANT: if you fix the bug, please add the following tag to the commit:
> > > Reported-by: syzbot+6fb572170402d311dd39@syzkaller.appspotmail.com
> > >
> >
> > Since it kept printk()ing for at least 93 seconds, it might have kept for 150 seconds.
> >
> > [  174.614333] hid-generic 0000:0000:0000.0003: unknown main item tag 0x0
> > [  268.196102] INFO: task kworker/u4:1:23 blocked for more than 140 seconds.
> >
> > Since the reproducer is simple, this might be lockup due to continuous printk().
> > If syzbot can reliably reproduce this problem using the reproducer, try
> > ratelimiting printk().
> 
> Right.. and I was able to reproduce after setting CONFIG_HID_GENERIC=y
> but unless I am missing something, the core problem doesn't seem related to
> fsnotify and $SUBJECT, so CCing HID maintainer.

Alright, so you're basically triggering a never-ending flow of kmsgs being 
printed out from HID parser due to doing crazy things with the parser, and 
that causes the issues for the kworker trying to flush them out.

I guess the patch below fixes it, however the kworker should not really be 
blocked by this I think ... adding a few more printk folks to double-check 
why the kworker would get stuck due to massive printk() flood.

diff --git a/include/linux/hid.h b/include/linux/hid.h
index d44a78362942..b81332fe85a4 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -1157,22 +1157,22 @@ do {									\
 } while (0)
 
 #define hid_printk(level, hid, fmt, arg...)		\
-	dev_printk(level, &(hid)->dev, fmt, ##arg)
+	dev_printk_ratelimited(level, &(hid)->dev, fmt, ##arg)
 #define hid_emerg(hid, fmt, arg...)			\
-	dev_emerg(&(hid)->dev, fmt, ##arg)
+	dev_emerg_ratelimited(&(hid)->dev, fmt, ##arg)
 #define hid_crit(hid, fmt, arg...)			\
-	dev_crit(&(hid)->dev, fmt, ##arg)
+	dev_crit_ratelimited(&(hid)->dev, fmt, ##arg)
 #define hid_alert(hid, fmt, arg...)			\
-	dev_alert(&(hid)->dev, fmt, ##arg)
+	dev_alert_ratelimited(&(hid)->dev, fmt, ##arg)
 #define hid_err(hid, fmt, arg...)			\
-	dev_err(&(hid)->dev, fmt, ##arg)
+	dev_err_ratelimited(&(hid)->dev, fmt, ##arg)
 #define hid_notice(hid, fmt, arg...)			\
-	dev_notice(&(hid)->dev, fmt, ##arg)
+	dev_notice_ratelimited(&(hid)->dev, fmt, ##arg)
 #define hid_warn(hid, fmt, arg...)			\
-	dev_warn(&(hid)->dev, fmt, ##arg)
+	dev_warn_ratelimited(&(hid)->dev, fmt, ##arg)
 #define hid_info(hid, fmt, arg...)			\
-	dev_info(&(hid)->dev, fmt, ##arg)
+	dev_info_ratelimited(&(hid)->dev, fmt, ##arg)
 #define hid_dbg(hid, fmt, arg...)			\
-	dev_dbg(&(hid)->dev, fmt, ##arg)
+	dev_dbg_ratelimited(&(hid)->dev, fmt, ##arg)
 
 #endif

-- 
Jiri Kosina
SUSE Labs

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: INFO: task hung in fsnotify_connector_destroy_workfn (2)
  2018-09-24 13:19     ` Jiri Kosina
@ 2018-09-24 13:31       ` Dmitry Vyukov
  2018-09-24 14:03         ` Tetsuo Handa
  2018-09-25  8:55       ` Petr Mladek
  1 sibling, 1 reply; 9+ messages in thread
From: Dmitry Vyukov @ 2018-09-24 13:31 UTC (permalink / raw)
  To: Jiri Kosina
  Cc: Amir Goldstein, Tetsuo Handa, syzbot+6fb572170402d311dd39,
	Jan Kara, syzkaller-bugs, linux-fsdevel, linux-kernel,
	Sergey Senozhatsky, Petr Mladek

On Mon, Sep 24, 2018 at 3:19 PM, Jiri Kosina <jikos@kernel.org> wrote:
> On Sun, 16 Sep 2018, Amir Goldstein wrote:
>
>> > > syzbot found the following crash on:
>> > >
>> > > HEAD commit:    11da3a7f84f1 Linux 4.19-rc3
>> > > git tree:       upstream
>> > > console output: https://syzkaller.appspot.com/x/log.txt?x=141ffbca400000
>> > > kernel config:  https://syzkaller.appspot.com/x/.config?x=9917ff4b798e1a1e
>> > > dashboard link: https://syzkaller.appspot.com/bug?extid=6fb572170402d311dd39
>> > > compiler:       gcc (GCC) 8.0.1 20180413 (experimental)
>> > > syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=136a60ae400000
>> > >
>> > > IMPORTANT: if you fix the bug, please add the following tag to the commit:
>> > > Reported-by: syzbot+6fb572170402d311dd39@syzkaller.appspotmail.com
>> > >
>> >
>> > Since it kept printk()ing for at least 93 seconds, it might have kept for 150 seconds.
>> >
>> > [  174.614333] hid-generic 0000:0000:0000.0003: unknown main item tag 0x0
>> > [  268.196102] INFO: task kworker/u4:1:23 blocked for more than 140 seconds.
>> >
>> > Since the reproducer is simple, this might be lockup due to continuous printk().
>> > If syzbot can reliably reproduce this problem using the reproducer, try
>> > ratelimiting printk().
>>
>> Right.. and I was able to reproduce after setting CONFIG_HID_GENERIC=y
>> but unless I am missing something, the core problem doesn't seem related to
>> fsnotify and $SUBJECT, so CCing HID maintainer.
>
> Alright, so you're basically triggering a never-ending flow of kmsgs being
> printed out from HID parser due to doing crazy things with the parser, and
> that causes the issues for the kworker trying to flush them out.
>
> I guess the patch below fixes it, however the kworker should not really be
> blocked by this I think ... adding a few more printk folks to double-check
> why the kworker would get stuck due to massive printk() flood.


The task hanged in synchronize_rcu(). I think any infinite loop
(whether it prints or not) can cause this.


> diff --git a/include/linux/hid.h b/include/linux/hid.h
> index d44a78362942..b81332fe85a4 100644
> --- a/include/linux/hid.h
> +++ b/include/linux/hid.h
> @@ -1157,22 +1157,22 @@ do {                                                                    \
>  } while (0)
>
>  #define hid_printk(level, hid, fmt, arg...)            \
> -       dev_printk(level, &(hid)->dev, fmt, ##arg)
> +       dev_printk_ratelimited(level, &(hid)->dev, fmt, ##arg)
>  #define hid_emerg(hid, fmt, arg...)                    \
> -       dev_emerg(&(hid)->dev, fmt, ##arg)
> +       dev_emerg_ratelimited(&(hid)->dev, fmt, ##arg)
>  #define hid_crit(hid, fmt, arg...)                     \
> -       dev_crit(&(hid)->dev, fmt, ##arg)
> +       dev_crit_ratelimited(&(hid)->dev, fmt, ##arg)
>  #define hid_alert(hid, fmt, arg...)                    \
> -       dev_alert(&(hid)->dev, fmt, ##arg)
> +       dev_alert_ratelimited(&(hid)->dev, fmt, ##arg)
>  #define hid_err(hid, fmt, arg...)                      \
> -       dev_err(&(hid)->dev, fmt, ##arg)
> +       dev_err_ratelimited(&(hid)->dev, fmt, ##arg)
>  #define hid_notice(hid, fmt, arg...)                   \
> -       dev_notice(&(hid)->dev, fmt, ##arg)
> +       dev_notice_ratelimited(&(hid)->dev, fmt, ##arg)
>  #define hid_warn(hid, fmt, arg...)                     \
> -       dev_warn(&(hid)->dev, fmt, ##arg)
> +       dev_warn_ratelimited(&(hid)->dev, fmt, ##arg)
>  #define hid_info(hid, fmt, arg...)                     \
> -       dev_info(&(hid)->dev, fmt, ##arg)
> +       dev_info_ratelimited(&(hid)->dev, fmt, ##arg)
>  #define hid_dbg(hid, fmt, arg...)                      \
> -       dev_dbg(&(hid)->dev, fmt, ##arg)
> +       dev_dbg_ratelimited(&(hid)->dev, fmt, ##arg)
>
>  #endif
>
> --
> Jiri Kosina
> SUSE Labs
>
> --
> You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@googlegroups.com.
> To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/nycvar.YFH.7.76.1809241511500.15880%40cbobk.fhfr.pm.
> For more options, visit https://groups.google.com/d/optout.

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: INFO: task hung in fsnotify_connector_destroy_workfn (2)
  2018-09-24 13:31       ` Dmitry Vyukov
@ 2018-09-24 14:03         ` Tetsuo Handa
  0 siblings, 0 replies; 9+ messages in thread
From: Tetsuo Handa @ 2018-09-24 14:03 UTC (permalink / raw)
  To: Dmitry Vyukov, Jiri Kosina
  Cc: Amir Goldstein, syzbot+6fb572170402d311dd39, Jan Kara,
	syzkaller-bugs, linux-fsdevel, linux-kernel, Sergey Senozhatsky,
	Petr Mladek

On 2018/09/24 22:31, Dmitry Vyukov wrote:
> On Mon, Sep 24, 2018 at 3:19 PM, Jiri Kosina <jikos@kernel.org> wrote:
>> On Sun, 16 Sep 2018, Amir Goldstein wrote:
>>
>>>>> syzbot found the following crash on:
>>>>>
>>>>> HEAD commit:    11da3a7f84f1 Linux 4.19-rc3
>>>>> git tree:       upstream
>>>>> console output: https://syzkaller.appspot.com/x/log.txt?x=141ffbca400000
>>>>> kernel config:  https://syzkaller.appspot.com/x/.config?x=9917ff4b798e1a1e
>>>>> dashboard link: https://syzkaller.appspot.com/bug?extid=6fb572170402d311dd39
>>>>> compiler:       gcc (GCC) 8.0.1 20180413 (experimental)
>>>>> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=136a60ae400000
>>>>>
>>>>> IMPORTANT: if you fix the bug, please add the following tag to the commit:
>>>>> Reported-by: syzbot+6fb572170402d311dd39@syzkaller.appspotmail.com
>>>>>
>>>>
>>>> Since it kept printk()ing for at least 93 seconds, it might have kept for 150 seconds.
>>>>
>>>> [  174.614333] hid-generic 0000:0000:0000.0003: unknown main item tag 0x0
>>>> [  268.196102] INFO: task kworker/u4:1:23 blocked for more than 140 seconds.
>>>>
>>>> Since the reproducer is simple, this might be lockup due to continuous printk().
>>>> If syzbot can reliably reproduce this problem using the reproducer, try
>>>> ratelimiting printk().
>>>
>>> Right.. and I was able to reproduce after setting CONFIG_HID_GENERIC=y
>>> but unless I am missing something, the core problem doesn't seem related to
>>> fsnotify and $SUBJECT, so CCing HID maintainer.
>>
>> Alright, so you're basically triggering a never-ending flow of kmsgs being
>> printed out from HID parser due to doing crazy things with the parser, and
>> that causes the issues for the kworker trying to flush them out.
>>
>> I guess the patch below fixes it, however the kworker should not really be
>> blocked by this I think ... adding a few more printk folks to double-check
>> why the kworker would get stuck due to massive printk() flood.
> 
> 
> The task hanged in synchronize_rcu(). I think any infinite loop
> (whether it prints or not) can cause this.

This problem is occurring on CONFIG_PREEMPT=y CONFIG_PREEMPT_RCU=y kernel.
I think that any insane printk() stress can delay waiters long enough to
fire khungtaskd watchdog. Though syzbot might be unable to reliably test
this problem (because syzbot has succeeded to trigger this problem for only
two times), why not to let syzbot try the patch anyway?

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: INFO: task hung in fsnotify_connector_destroy_workfn (2)
  2018-09-24 13:19     ` Jiri Kosina
  2018-09-24 13:31       ` Dmitry Vyukov
@ 2018-09-25  8:55       ` Petr Mladek
  2018-09-25 12:30         ` Tetsuo Handa
  1 sibling, 1 reply; 9+ messages in thread
From: Petr Mladek @ 2018-09-25  8:55 UTC (permalink / raw)
  To: Jiri Kosina
  Cc: Amir Goldstein, penguin-kernel, syzbot+6fb572170402d311dd39,
	Jan Kara, syzkaller-bugs, linux-fsdevel, linux-kernel,
	Sergey Senozhatsky

On Mon 2018-09-24 15:19:35, Jiri Kosina wrote:
> On Sun, 16 Sep 2018, Amir Goldstein wrote:
> 
> > > > syzbot found the following crash on:
> > > >
> > > > HEAD commit:    11da3a7f84f1 Linux 4.19-rc3
> > > > git tree:       upstream
> > > > console output: https://syzkaller.appspot.com/x/log.txt?x=141ffbca400000
> > > > kernel config:  https://syzkaller.appspot.com/x/.config?x=9917ff4b798e1a1e
> > > > dashboard link: https://syzkaller.appspot.com/bug?extid=6fb572170402d311dd39
> > > > compiler:       gcc (GCC) 8.0.1 20180413 (experimental)
> > > > syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=136a60ae400000
> > > >
> > > > IMPORTANT: if you fix the bug, please add the following tag to the commit:
> > > > Reported-by: syzbot+6fb572170402d311dd39@syzkaller.appspotmail.com
> > > >
> > >
> > > Since it kept printk()ing for at least 93 seconds, it might have kept for 150 seconds.
> > >
> > > [  174.614333] hid-generic 0000:0000:0000.0003: unknown main item tag 0x0
> > > [  268.196102] INFO: task kworker/u4:1:23 blocked for more than 140 seconds.
> > >
> > > Since the reproducer is simple, this might be lockup due to continuous printk().
> > > If syzbot can reliably reproduce this problem using the reproducer, try
> > > ratelimiting printk().
> > 
> > Right.. and I was able to reproduce after setting CONFIG_HID_GENERIC=y
> > but unless I am missing something, the core problem doesn't seem related to
> > fsnotify and $SUBJECT, so CCing HID maintainer.
> 
> Alright, so you're basically triggering a never-ending flow of kmsgs being 
> printed out from HID parser due to doing crazy things with the parser, and 
> that causes the issues for the kworker trying to flush them out.

My understanding is that the flow of messages is long but it ends at
some point. For example, the many warnings for
"hid-generic 0000:0000:0000.0003" eventually ends with

[  221.223267] hid-generic 0000:0000:0000.0003: hidraw0: <UNKNOWN> HID v0.00 Device [syz1] on syz1


Next, there are usually intermixed messages for two devices, e.g.

[  174.776326] hid-generic 0000:0000:0000.0003: unknown main item tag 0x0
[  174.782734] hid-generic 0000:0000:0000.0004: unknown main item tag 0x0

Therefore I believe that console_lock is being transfered and no
process is stuck in printk()/console_unlock().


> I guess the patch below fixes it, however the kworker should not really be 
> blocked by this I think ... adding a few more printk folks to double-check 
> why the kworker would get stuck due to massive printk() flood.

It seems that the many printk() calls just delay the entire
process and rcu gets blocked for too long. The messages are
the same all the time. So some rate limiting looks like
a reasonable solution.

Best Regards,
Petr

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: INFO: task hung in fsnotify_connector_destroy_workfn (2)
  2018-09-25  8:55       ` Petr Mladek
@ 2018-09-25 12:30         ` Tetsuo Handa
  0 siblings, 0 replies; 9+ messages in thread
From: Tetsuo Handa @ 2018-09-25 12:30 UTC (permalink / raw)
  To: Petr Mladek, Jiri Kosina
  Cc: Amir Goldstein, syzbot+6fb572170402d311dd39, Jan Kara,
	syzkaller-bugs, linux-fsdevel, linux-kernel, Sergey Senozhatsky

On 2018/09/25 17:55, Petr Mladek wrote:
>> I guess the patch below fixes it, however the kworker should not really be 
>> blocked by this I think ... adding a few more printk folks to double-check 
>> why the kworker would get stuck due to massive printk() flood.
> 
> It seems that the many printk() calls just delay the entire
> process and rcu gets blocked for too long. The messages are
> the same all the time. So some rate limiting looks like
> a reasonable solution.
> 

Yes. Commit 128f380410350012 ("android: binder: Rate-limit debug and userspace triggered err msgs")
chose ratelimiting as a fix for https://syzkaller.appspot.com/bug?id=0e75779a6f0faac461510c6330514e8f0e893038 .

Since syzbot did not reproduce the problem with Jiri's patch applied,
I think we can apply Jiri's patch as a fix for this problem.

^ permalink raw reply	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2018-09-25 18:38 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-09-15  2:33 INFO: task hung in fsnotify_connector_destroy_workfn (2) syzbot
2018-09-15 16:42 ` Amir Goldstein
2018-09-15 17:25 ` Tetsuo Handa
2018-09-15 23:05   ` Amir Goldstein
2018-09-24 13:19     ` Jiri Kosina
2018-09-24 13:31       ` Dmitry Vyukov
2018-09-24 14:03         ` Tetsuo Handa
2018-09-25  8:55       ` Petr Mladek
2018-09-25 12:30         ` Tetsuo Handa

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