audit: type=1400 audit(1556727415.755:36): avc:  denied  { create } for  pid=19160 comm="syz-executor.5" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1
INFO: task syz-executor.3:21050 blocked for more than 140 seconds.
      Not tainted 4.4.174+ #4
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.3  D ffff8801cecefc28 28528 21050      1 0x00000004
 ffff8801cecefc28 ffff8801d8315f00 758c33c9c3aff95f ffff8801d8315f00
 0000000000000000 ffff8801d8316700 ffff8801db71f180 ffff8801db71f1a8
 ffff8801db71e898 ffff88009d525f00 ffff8801d8315f00 ffffed0039d9d001
Call Trace:
 [<ffffffff82709b79>] schedule+0x99/0x1d0 kernel/sched/core.c:3355
 [<ffffffff8270a333>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3388
 [<ffffffff8270c492>] __mutex_lock_common kernel/locking/mutex.c:582 [inline]
 [<ffffffff8270c492>] mutex_lock_nested+0x3c2/0xb80 kernel/locking/mutex.c:621
 [<ffffffff8221b16a>] copy_net_ns+0xca/0x250 net/core/net_namespace.c:387
 [<ffffffff81136a90>] create_new_namespaces+0x2f0/0x670 kernel/nsproxy.c:95
 [<ffffffff8113737b>] unshare_nsproxy_namespaces+0xab/0x1e0 kernel/nsproxy.c:190
 [<ffffffff810d28d2>] SYSC_unshare kernel/fork.c:2092 [inline]
 [<ffffffff810d28d2>] SyS_unshare+0x302/0x6f0 kernel/fork.c:2042
 [<ffffffff82718ba1>] entry_SYSCALL_64_fastpath+0x1e/0x9a