audit: type=1400 audit(1563636753.897:82): avc: denied { search } for pid=22075 comm="syz-executor.5" name="/" dev="sysfs" ino=1 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:sound_device_t:s0 tclass=dir permissive=1 ip6_tunnel: ip6tnl1 xmit: Local address not yet configured! INFO: task kworker/dying:64 blocked for more than 140 seconds. Not tainted 4.9.185+ #8 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/dying D24792 64 2 0x80000000 0000000000000087 ffff8801d78e97c0 0000000000000000 ffff8801db721000 ffff8801ae294740 ffff8801db721018 ffff8801d78ff8c0 ffffffff8280c5ae 0000000000000246 ffff8801d78e97c0 0000000000000000 ffff8801db7218f0 Call Trace: [<00000000e2d7d72b>] schedule+0x92/0x1c0 /kernel/sched/core.c:3546 [<00000000c9c09614>] __rt_mutex_slowlock+0x99/0x290 /kernel/locking/rtmutex.c:1221 [<0000000087f0333e>] rt_mutex_slowlock+0x199/0x4c0 /kernel/locking/rtmutex.c:1293 [<000000003f6aaad1>] rt_mutex_fastlock /kernel/locking/rtmutex.c:1439 [inline] [<000000003f6aaad1>] rt_mutex_lock+0x2d/0x40 /kernel/locking/rtmutex.c:1499 [<00000000eba3e5bf>] process_notifier /drivers/misc/uid_sys_stats.c:636 [inline] [<00000000eba3e5bf>] process_notifier+0x96/0x670 /drivers/misc/uid_sys_stats.c:625 [<000000007c77f4b4>] notifier_call_chain+0xb4/0x1d0 /kernel/notifier.c:93 [<00000000b57a8016>] __blocking_notifier_call_chain /kernel/notifier.c:317 [inline] [<00000000b57a8016>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] [<00000000b57a8016>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] [<00000000b57a8016>] blocking_notifier_call_chain+0x80/0xa0 /kernel/notifier.c:325 [<000000007e08dc76>] profile_task_exit+0x1f/0x30 /kernel/profile.c:140 [<0000000058d8d7cd>] do_exit+0x90/0x2aa0 /kernel/exit.c:744 [<000000008777e1bf>] kthread+0x22b/0x310 /kernel/kthread.c:214 [<000000009f82b5ba>] ret_from_fork+0x5c/0x70 /arch/x86/entry/entry_64.S:375 Showing all locks held in the system: 1 lock held by kworker/dying/5: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by kworker/dying/23: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 2 locks held by khungtaskd/24: #0: (rcu_read_lock){......}, at: [<000000009161113f>] check_hung_uninterruptible_tasks /kernel/hung_task.c:169 [inline] #0: (rcu_read_lock){......}, at: [<000000009161113f>] watchdog+0x14b/0xaf0 /kernel/hung_task.c:263 #1: (tasklist_lock){.+.+..}, at: [<00000000fd1f3c31>] debug_show_all_locks+0x7f/0x21f /kernel/locking/lockdep.c:4336 1 lock held by kworker/dying/64: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by rsyslogd/1898: #0: (&f->f_pos_lock){+.+.+.}, at: [<00000000bb77d2ab>] __fdget_pos+0xa8/0xd0 /fs/file.c:782 2 locks held by getty/2026: #0: (&tty->ldisc_sem){++++++}, at: [<000000008d08912d>] ldsem_down_read+0x33/0x40 /drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+...}, at: [<0000000023663285>] n_tty_read+0x1fe/0x1820 /drivers/tty/n_tty.c:2156 1 lock held by syz-executor.0/2101: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.2/2103: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.4/2104: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by kworker/dying/2112: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by kworker/dying/2119: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by kworker/dying/2126: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by kworker/dying/2134: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by kworker/dying/2164: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.3/3437: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.1/11047: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by kworker/dying/11359: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by kworker/dying/11363: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by kworker/dying/11366: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by kworker/dying/11372: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 2 locks held by kworker/u4:11/11383: #0: ("events_unbound"){.+.+.+}, at: [<00000000457aaa8f>] process_one_work+0x790/0x1600 /kernel/workqueue.c:2107 #1: ((&sub_info->work)){+.+.+.}, at: [<0000000043f39359>] process_one_work+0x7ce/0x1600 /kernel/workqueue.c:2111 2 locks held by kworker/u4:12/11387: #0: ("events_unbound"){.+.+.+}, at: [<00000000457aaa8f>] process_one_work+0x790/0x1600 /kernel/workqueue.c:2107 #1: ((&sub_info->work)){+.+.+.}, at: [<0000000043f39359>] process_one_work+0x7ce/0x1600 /kernel/workqueue.c:2111 1 lock held by kworker/dying/11398: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by kworker/dying/11405: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by kworker/dying/11417: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by kworker/dying/11426: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by kworker/dying/11441: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by kworker/dying/11744: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by kworker/dying/11759: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by kworker/dying/11774: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by kworker/dying/11791: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by kworker/dying/11794: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by kworker/dying/15653: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.5/22074: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by getty/23240: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by getty/23339: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by getty/23340: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by getty/23341: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by getty/23358: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by getty/23359: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.1/23447: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.2/23462: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.2/23463: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.2/23477: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.3/23464: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.3/23465: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.3/23475: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.3/23483: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.3/23466: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.0/23468: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.0/23476: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.0/23478: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.4/23471: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.5/23480: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.5/23481: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.5/23485: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by modprobe/23482: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by syz-executor.3/23484: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 1 lock held by modprobe/23486: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] __blocking_notifier_call_chain /kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain /kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000d89b1e07>] blocking_notifier_call_chain+0x6a/0xa0 /kernel/notifier.c:325 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 24 Comm: khungtaskd Not tainted 4.9.185+ #8 ffff8801d98d7cc8 ffffffff81b5a081 0000000000000000 0000000000000000 0000000000000000 ffffffff81099a01 dffffc0000000000 ffff8801d98d7d00 ffffffff81b6531c 0000000000000000 0000000000000000 0000000000000000 Call Trace: [<0000000043a2cf10>] __dump_stack /lib/dump_stack.c:15 [inline] [<0000000043a2cf10>] dump_stack+0xc1/0x120 /lib/dump_stack.c:51 [<000000009a2b8e92>] nmi_cpu_backtrace.cold+0x47/0x87 /lib/nmi_backtrace.c:99 [<000000003fd7b75e>] nmi_trigger_cpumask_backtrace+0x124/0x155 /lib/nmi_backtrace.c:60 [<00000000107819d9>] arch_trigger_cpumask_backtrace+0x14/0x20 /arch/x86/kernel/apic/hw_nmi.c:37 [<00000000acd5b743>] trigger_all_cpu_backtrace /./include/linux/nmi.h:58 [inline] [<00000000acd5b743>] check_hung_task /kernel/hung_task.c:126 [inline] [<00000000acd5b743>] check_hung_uninterruptible_tasks /kernel/hung_task.c:183 [inline] [<00000000acd5b743>] watchdog+0x670/0xaf0 /kernel/hung_task.c:263 [<00000000b3886f1a>] kthread+0x278/0x310 /kernel/kthread.c:211 [<000000009f82b5ba>] ret_from_fork+0x5c/0x70 /arch/x86/entry/entry_64.S:375 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff8281b701