audit_printk_skb: 171 callbacks suppressed
audit: type=1400 audit(1536518455.560:38399): avc:  denied  { net_admin } for  pid=2118 comm="syz-executor7" 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
audit: type=1400 audit(1536518455.780:38400): avc:  denied  { sys_admin } for  pid=2116 comm="syz-executor2" 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(1536518456.460:38401): avc:  denied  { net_admin } for  pid=2116 comm="syz-executor2" 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-executor4:25267 blocked for more than 140 seconds.
      Not tainted 4.9.125+ #89
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor4   D29112 25267   2115 0x00000004
 ffff8801d43b0000 ffff8801d0b7a100 ffff8801c9146300 ffff8801cf4c4740
 ffff8801db621018 ffff88019c82fcf8 ffffffff8277d092 0000000000000000
 ffff8801d43b08b0 ffffed003a876115 00ff8801d43b0000 ffff8801db6218f0
Call Trace:
 [<ffffffff8277e5bf>] schedule+0x7f/0x1b0 kernel/sched/core.c:3553
 [<ffffffff8277ef43>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3586
 [<ffffffff82780bc6>] __mutex_lock_common kernel/locking/mutex.c:582 [inline]
 [<ffffffff82780bc6>] mutex_lock_nested+0x326/0x870 kernel/locking/mutex.c:621
 [<ffffffff81fe8522>] evdev_flush+0x72/0x120 drivers/input/evdev.c:350
 [<ffffffff814e2ed7>] filp_close+0xa7/0x140 fs/open.c:1129
 [<ffffffff8154bcc6>] __close_fd+0x156/0x230 fs/file.c:651
 [<ffffffff814e2fbc>] SYSC_close fs/open.c:1148 [inline]
 [<ffffffff814e2fbc>] SyS_close+0x4c/0x90 fs/open.c:1146
 [<ffffffff8100554f>] do_syscall_64+0x19f/0x480 arch/x86/entry/common.c:282
 [<ffffffff8278c193>] 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: [<ffffffff81309cb0>] rcu_read_unlock include/linux/rcupdate.h:927 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff81309cb0>] rcu_lock_break kernel/hung_task.c:143 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff81309cb0>] check_hung_uninterruptible_tasks kernel/hung_task.c:177 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff81309cb0>] watchdog+0x310/0xa20 kernel/hung_task.c:239
 #1:  (tasklist_lock){.+.+..}, at: [<ffffffff813e68fc>] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336
1 lock held by rsyslogd/1895:
 #0:  (&f->f_pos_lock){+.+.+.}, at: [<ffffffff8154c11c>] __fdget_pos+0xac/0xd0 fs/file.c:781
2 locks held by getty/2023:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff8278a262>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81cdd442>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
1 lock held by syz-executor4/25267:
 #0:  (&evdev->mutex){+.+.+.}, at: [<ffffffff81fe8522>] evdev_flush+0x72/0x120 drivers/input/evdev.c:350
1 lock held by init/25617:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd1c76>] tty_open_by_driver drivers/tty/tty_io.c:2047 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd1c76>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2125
1 lock held by init/25618:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd1c76>] tty_open_by_driver drivers/tty/tty_io.c:2047 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd1c76>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2125
1 lock held by init/25619:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd1c76>] tty_open_by_driver drivers/tty/tty_io.c:2047 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd1c76>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2125
1 lock held by init/25620:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd1c76>] tty_open_by_driver drivers/tty/tty_io.c:2047 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd1c76>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2125
1 lock held by init/25621:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd1c76>] tty_open_by_driver drivers/tty/tty_io.c:2047 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd1c76>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2125
1 lock held by init/25622:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd1c76>] tty_open_by_driver drivers/tty/tty_io.c:2047 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81cd1c76>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2125

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

NMI backtrace for cpu 1
CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.125+ #89
 ffff8801d9907d08 ffffffff81af0ae9 0000000000000000 0000000000000001
 0000000000000001 0000000000000001 ffffffff810967d0 ffff8801d9907d40
 ffffffff81afb849 0000000000000001 0000000000000000 0000000000000003
Call Trace:
 [<ffffffff81af0ae9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81af0ae9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81afb849>] nmi_cpu_backtrace.cold.0+0x48/0x87 lib/nmi_backtrace.c:99
 [<ffffffff81afb7dc>] 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
 [<ffffffff8130a04d>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline]
 [<ffffffff8130a04d>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff8130a04d>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff8130a04d>] watchdog+0x6ad/0xa20 kernel/hung_task.c:239
 [<ffffffff8113d9ad>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff8278c35c>] 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: 24179 Comm: syz-executor5 Not tainted 4.9.125+ #89
task: ffff88019e1697c0 task.stack: ffff8801c8ff8000
RIP: 0010:[<ffffffff81005606>] 
c [<ffffffff81005606>] __read_once_size include/linux/compiler.h:243 [inline]
RIP: 0010:[<ffffffff81005606>] 
c [<ffffffff81005606>] prepare_exit_to_usermode arch/x86/entry/common.c:188 [inline]
RIP: 0010:[<ffffffff81005606>] 
c [<ffffffff81005606>] syscall_return_slowpath arch/x86/entry/common.c:260 [inline]
RIP: 0010:[<ffffffff81005606>] 
c [<ffffffff81005606>] do_syscall_64+0x256/0x480 arch/x86/entry/common.c:287
RSP: 0018:ffff8801c8ffff00  EFLAGS: 00000802
RAX: dffffc0000000000 RBX: ffff8801c8ffff58 RCX: 0000000000000000
RDX: 1ffff10033c2d2f8 RSI: ffffffff810055f0 RDI: ffff88019e16a068
RBP: ffff8801c8ffff48 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88019e1697c0
R13: ffff8801c8ffffd0 R14: ffff88019e1697c0 R15: 0000000000000000
FS:  00007f617baa8700(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002086c000 CR3: 0000000192261000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000000
c 0000000000000000
c 0000000000000000
c 0000000000000000
c
 0000000000000000
c 0000000000000000
c 0000000000000000
c 0000000000000000
c
 0000000000000000
c 0000000000000000
c ffffffff8278c193
c 0000000000000000
c
Call Trace:
 [<ffffffff8278c193>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Code: 
c9c 
c58 
c0f 
c1f 
c44 
c00 
c00 
cf6 
cc4 
c02 
c0f 
c85 
ceb 
c00 
c00 
c00 
ce8 
c60 
c3e 
c30 
c00 
ce8 
c8b 
c12 
c20 
c00 
c4c 
c89 
ce2 
c48 
cb8 
c00 
c00 
c00 
c00 
c00 
cfc 
cff 
cdf 
c48 
cc1 
cea 
c03 
c<80> 
c3c 
c02 
c00 
c0f 
c85 
c26 
c01 
c00 
c00 
c4d 
c8b 
c2c 
c24 
c41 
cf7 
cc5 
c0e 
c18 
c00 
c00 
c