Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable
INFO: task kworker/u4:2:362 blocked for more than 140 seconds.
Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable
      Not tainted 4.14.105+ #28
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/u4:2    D25936   362      2 0x80000000
Workqueue: netns cleanup_net
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3492
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3550
 __mutex_lock_common kernel/locking/mutex.c:833 [inline]
 __mutex_lock+0x559/0x1430 kernel/locking/mutex.c:893
 cleanup_net+0x136/0x860 net/core/net_namespace.c:449
 process_one_work+0x7c6/0x14e0 kernel/workqueue.c:2114
 worker_thread+0x5d7/0x1080 kernel/workqueue.c:2248
 kthread+0x310/0x420 kernel/kthread.c:232
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402

Showing all locks held in the system:
1 lock held by khungtaskd/23:
 #0:  (tasklist_lock){.+.+}, at: [<ffffffffba200e0c>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4541
3 locks held by kworker/u4:2/362:
 #0:  ("%s""netns"){+.+.}, at: [<ffffffffba1287d5>] process_one_work+0x6e5/0x14e0 kernel/workqueue.c:2085
 #1:  (net_cleanup_work){+.+.}, at: [<ffffffffba12880b>] process_one_work+0x71b/0x14e0 kernel/workqueue.c:2089
 #2:  (net_mutex){+.+.}, at: [<ffffffffbb2eefd6>] cleanup_net+0x136/0x860 net/core/net_namespace.c:449
2 locks held by getty/1757:
 #0:  (&tty->ldisc_sem){++++}, at: [<ffffffffbad38782>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:275
 #1:  (&ldata->atomic_read_lock){+.+.}, at: [<ffffffffbad33ba7>] n_tty_read+0x1f7/0x1700 drivers/tty/n_tty.c:2156
1 lock held by syz-executor.2/31972:
 #0:  (&sig->cred_guard_mutex){+.+.}, at: [<ffffffffba56db61>] prepare_bprm_creds+0x51/0x110 fs/exec.c:1389
1 lock held by syz-executor.3/32230:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/32235:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/32252:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/32266:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/32267:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/32273:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/32274:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/32279:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/32283:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/32296:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/32298:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/32302:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/32309:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/32310:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/32314:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/32335:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/32338:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/32342:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/32362:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/32377:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/32388:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/32391:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/32423:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/32428:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/32442:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/32447:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/32473:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/32485:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/32495:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/32496:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/32502:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/32518:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/32523:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/32533:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/32534:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/32539:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/32549:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/32554:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/32558:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/32561:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/32570:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/32580:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/32581:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/32587:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/32590:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/32599:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/32603:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/32608:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/32610:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/32654:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/32659:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/32664:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/32663:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/32665:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/32677:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/32684:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/32692:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/32701:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/32717:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/32720:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/32727:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/32732:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/32736:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/32739:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/32748:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/32758:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/32760:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/32767:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/310:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/318:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/325:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/332:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/341:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/367:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/382:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/387:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/390:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/403:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/416:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/418:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/422:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/427:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/431:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/442:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/457:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/458:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/480:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/484:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/493:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/497:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/500:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/508:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/519:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/525:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/534:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/540:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/551:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/555:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/561:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/569:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/580:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/581:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/587:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/595:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/603:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/614:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/619:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/629:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/630:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/639:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/643:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/651:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/660:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/662:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/667:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/670:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/676:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/680:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/708:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/712:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/727:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/731:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/759:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/760:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/787:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/795:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/803:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/891:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/948:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/990:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/1011:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/1301:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/1317:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/1334:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/1349:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/1368:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/1395:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.4/1402:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/1418:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/1449:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/1525:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/1571:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/1595:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.5/1662:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/1674:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/1733:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/1780:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/1869:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/1912:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.1/1924:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.0/1929:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/1957:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/2005:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/2075:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/2132:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/2176:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/2226:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/2282:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/2324:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/2325:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/2375:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/2376:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/2447:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/2511:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/2557:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/2598:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/2685:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/2703:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/2743:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/2806:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/2841:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.3/3168:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/11555:
 #0:  (net_mutex){+.+.}, at: [<ffffffffbb2efc06>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:409
1 lock held by syz-executor.2/12384:
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<ffffffffbb29dd26>] inode_lock include/linux/fs.h:715 [inline]
 #0:  (&sb->s_type->i_mutex_key#8){+.+.}, at: [<ffffffffbb29dd26>] __sock_release+0x86/0x250 net/socket.c:601

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.105+ #28
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xb9/0x10e lib/dump_stack.c:53
 nmi_cpu_backtrace.cold+0x47/0x86 lib/nmi_backtrace.c:101
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 190 Comm: udevd Not tainted 4.14.105+ #28
task: ffff8881d470de00 task.stack: ffff8881d47c0000
RIP: 0010:memcmp+0x72/0xb0 lib/string.c:864
RSP: 0018:ffff8881d47c7658 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff8881d47c7738 RCX: 0000000000000007
RDX: 00000000000000ff RSI: ffff8881d538a508 RDI: ffff8881d47c76f8
RBP: dffffc0000000000 R08: ffffffffbcc2ae3c R09: ffffffffbcc2ae38
R10: 000000000005f190 R11: 000000000001c033 R12: ffff8881d47c7738
R13: 0000000000000008 R14: ffff8881d47c76f8 R15: ffff8881d538a4b0
FS:  00007f81272b67a0(0000) GS:ffff8881db800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001888068 CR3: 00000001d4c4e006 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 find_stack lib/stackdepot.c:176 [inline]
 depot_save_stack+0x11d/0x418 lib/stackdepot.c:225
Code: 89 f2 48 89 f1 0f b6 03 48 c1 ea 03 83 e1 07 0f b6 14 2a 38 ca 7f 04 84 d2 75 1e 0f b6 16 29 d0 74 b7 48 83 c4 10 5b 5d 41 5c c3 <48> 83 c4 10 31 c0 5b 5d 41 5c c3 31 c0 c3 48 89 f7 89 44 24 0c