audit_printk_skb: 6 callbacks suppressed
audit: type=1400 audit(1537486955.339:125): avc:  denied  { sys_admin } for  pid=2092 comm="syz-executor0" capability=21  scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1
audit: type=1400 audit(1537486955.339:126): avc:  denied  { sys_admin } for  pid=2092 comm="syz-executor0" capability=21  scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1
audit: type=1400 audit(1537486956.329:127): avc:  denied  { net_admin } for  pid=2092 comm="syz-executor0" capability=12  scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1
INFO: task syz-executor3:14257 blocked for more than 140 seconds.
      Not tainted 4.9.128+ #93
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor3   D28856 14257   2098 0x00000002
 ffff8801936fdf00 ffff8801a652bc80 ffff8801d764ac00 ffff880194e28000
 ffff8801db621018 ffff880194da77a8 ffffffff8277ee02 0000000000000000
 ffff8801936fe7b0 ffffed00326dfcf5 00ff8801936fdf00 ffff8801db6218f0
Call Trace:
 [<ffffffff8278032f>] schedule+0x7f/0x1b0 kernel/sched/core.c:3553
 [<ffffffff82780cb3>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3586
 [<ffffffff82782936>] __mutex_lock_common kernel/locking/mutex.c:582 [inline]
 [<ffffffff82782936>] mutex_lock_nested+0x326/0x870 kernel/locking/mutex.c:621
 [<ffffffff81ccf2a8>] tty_release+0xa88/0xd00 drivers/tty/tty_io.c:1933
 [<ffffffff814f0ca3>] __fput+0x263/0x700 fs/file_table.c:208
 [<ffffffff814f11c5>] ____fput+0x15/0x20 fs/file_table.c:244
 [<ffffffff811392ac>] task_work_run+0x10c/0x180 kernel/task_work.c:116
 [<ffffffff810e4027>] exit_task_work include/linux/task_work.h:21 [inline]
 [<ffffffff810e4027>] do_exit+0x787/0x2750 kernel/exit.c:833
 [<ffffffff810ea481>] do_group_exit+0x111/0x300 kernel/exit.c:937
 [<ffffffff8110b411>] get_signal+0x4e1/0x1460 kernel/signal.c:2321
 [<ffffffff81051225>] do_signal+0x95/0x1b00 arch/x86/kernel/signal.c:807
 [<ffffffff81003e2e>] exit_to_usermode_loop+0x10e/0x150 arch/x86/entry/common.c:157
 [<ffffffff8100570d>] prepare_exit_to_usermode arch/x86/entry/common.c:191 [inline]
 [<ffffffff8100570d>] syscall_return_slowpath arch/x86/entry/common.c:260 [inline]
 [<ffffffff8100570d>] do_syscall_64+0x35d/0x480 arch/x86/entry/common.c:287
 [<ffffffff8278df13>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb

Showing all locks held in the system:
2 locks held by khungtaskd/24:
 #0:  (rcu_read_lock){......}, at: [<ffffffff8130a2a0>] rcu_read_unlock include/linux/rcupdate.h:927 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff8130a2a0>] rcu_lock_break kernel/hung_task.c:143 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff8130a2a0>] check_hung_uninterruptible_tasks kernel/hung_task.c:177 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff8130a2a0>] watchdog+0x310/0xa20 kernel/hung_task.c:239
 #1:  (tasklist_lock){.+.?..}, at: [<ffffffff813e71ec>] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336
1 lock held by rsyslogd/1896:
 #0:  (&f->f_pos_lock){+.+.+.}, at: [<ffffffff8154c6fc>] __fdget_pos+0xac/0xd0 fs/file.c:781
2 locks held by getty/2023:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff8278bfd2>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+.+.}, at: [<ffffffff81cdee72>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
1 lock held by syz-executor3/14257:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81ccf2a8>] tty_release+0xa88/0xd00 drivers/tty/tty_io.c:1933
1 lock held by syz-executor3/14330:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81ccf2a8>] tty_release+0xa88/0xd00 drivers/tty/tty_io.c:1933
1 lock held by syz-executor3/14557:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81ccf2a8>] tty_release+0xa88/0xd00 drivers/tty/tty_io.c:1933
1 lock held by syz-executor3/15160:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81ccf2a8>] tty_release+0xa88/0xd00 drivers/tty/tty_io.c:1933
1 lock held by syz-executor3/15291:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81ccf2a8>] tty_release+0xa88/0xd00 drivers/tty/tty_io.c:1933
1 lock held by syz-executor5/18077:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cec497>] ptmx_open+0xf7/0x310 drivers/tty/pty.c:753
1 lock held by syz-executor5/18092:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cec497>] ptmx_open+0xf7/0x310 drivers/tty/pty.c:753
1 lock held by init/18082:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd36a6>] tty_open_by_driver drivers/tty/tty_io.c:2047 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd36a6>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2125
1 lock held by init/18083:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd36a6>] tty_open_by_driver drivers/tty/tty_io.c:2047 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd36a6>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2125
1 lock held by init/18084:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd36a6>] tty_open_by_driver drivers/tty/tty_io.c:2047 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd36a6>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2125
1 lock held by init/18085:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd36a6>] tty_open_by_driver drivers/tty/tty_io.c:2047 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd36a6>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2125
1 lock held by init/18086:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd36a6>] tty_open_by_driver drivers/tty/tty_io.c:2047 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd36a6>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2125
1 lock held by init/18087:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd36a6>] tty_open_by_driver drivers/tty/tty_io.c:2047 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd36a6>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2125

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

NMI backtrace for cpu 1
CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.128+ #93
 ffff8801d98ffd08 ffffffff81af2469 0000000000000000 0000000000000001
 0000000000000001 0000000000000001 ffffffff810967d0 ffff8801d98ffd40
 ffffffff81afd1c9 0000000000000001 0000000000000000 0000000000000003
Call Trace:
 [<ffffffff81af2469>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81af2469>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81afd1c9>] nmi_cpu_backtrace.cold.0+0x48/0x87 lib/nmi_backtrace.c:99
 [<ffffffff81afd15c>] nmi_trigger_cpumask_backtrace+0x12c/0x151 lib/nmi_backtrace.c:60
 [<ffffffff810968d4>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37
 [<ffffffff8130a63d>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline]
 [<ffffffff8130a63d>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff8130a63d>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff8130a63d>] watchdog+0x6ad/0xa20 kernel/hung_task.c:239
 [<ffffffff8113e00d>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff8278e0dc>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 6912 Comm: syz-executor1 Not tainted 4.9.128+ #93
task: ffff8801d1d04740 task.stack: ffff8801a80f8000
RIP: 0010:[<ffffffff8138062d>] 
c [<ffffffff8138062d>] __bpf_prog_run+0x2b7d/0x54b0 kernel/bpf/core.c:606
RSP: 0018:ffff8801a80ff940  EFLAGS: 00000246
RAX: ffffffff8138062d RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8137db73 RDI: ffffffff8288ce38
RBP: ffff8801a80ffca8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801a80ffc80
R13: ffffffff8288c840 R14: ffffc9000f04e038 R15: 00000000000000bf
FS:  00007f69c3ed7700(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000070b1b4 CR3: 00000001c7d57000 CR4: 00000000001606b0
Stack:
 ffff8801d1d04fe0
c 00000000d1d05010
c 1ffff1003501ff2c
c ffff8801d1d04ff0
c
 0000000041b58ab3
c ffffffff82c325f8
c ffffffff8137dab0
c ffffffff82c30c68
c
 ffffffff811ff5f0
c ffff8801d1d05010
c ffff8801d1d04fe8
c 0000000000000046
c
Call Trace:
 [<ffffffff8130c6cc>] seccomp_run_filters kernel/seccomp.c:200 [inline]
 [<ffffffff8130c6cc>] __seccomp_filter+0x14c/0xc80 kernel/seccomp.c:589
 [<ffffffff8130ebc6>] __secure_computing+0xa6/0x290 kernel/seccomp.c:692
 [<ffffffff81004940>] syscall_trace_enter+0x550/0xd20 arch/x86/entry/common.c:117
 [<ffffffff8100566c>] do_syscall_64+0x2bc/0x480 arch/x86/entry/common.c:273
 [<ffffffff8278df13>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Code: 
ce8 
c03 
c80 
c3c 
c18 
c00 
c0f 
c85 
c6c 
c28 
c00 
c00 
c4b 
c8b 
c8c 
cfc 
c40 
cfd 
cff 
cff 
c48 
c89 
cf0 
c49 
c83 
cc6 
c08 
c48 
cd3 
ce8 
c49 
c89 
c84 
cd4 
c40 
cfd 
cff 
cff 
ce9 
c41 
cd5 
cff 
cff 
c<e8> 
c0e 
c94 
cf8 
cff 
c49 
c8d 
c7e 
c01 
c48 
c89 
cf8 
c48 
c89 
cfa 
c48 
cc1 
ce8 
c03 
c83 
ce2 
c