audit: type=1400 audit(1543536066.406:2864): avc:  denied  { read } for  pid=28492 comm="syz-executor0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1
audit: type=1400 audit(1543536067.046:2865): avc:  denied  { create } for  pid=28546 comm="syz-executor2" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1
audit: type=1400 audit(1543536067.056:2866): avc:  denied  { write } for  pid=28546 comm="syz-executor2" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1
INFO: task init:25345 blocked for more than 140 seconds.
      Not tainted 4.9.141+ #72
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
init            D28888 25345      1 0x10000000
 ffff8801a2b117c0 ffff8801ac935280 ffff8801d6d8f380 ffff88018f495f00
 ffff8801db621018 ffff88017965f580 ffffffff82807952 ffff8801a2b12070
 000000000000015b 0000000000000000 0000000000000000 ffff8801db6218f0
Call Trace:
 [<ffffffff82808e7f>] schedule+0x7f/0x1b0 kernel/sched/core.c:3553
 [<ffffffff82814665>] schedule_timeout+0x735/0xe20 kernel/time/timer.c:1771
 [<ffffffff82810c51>] __down_common kernel/locking/semaphore.c:221 [inline]
 [<ffffffff82810c51>] __down+0x191/0x2b0 kernel/locking/semaphore.c:238
 [<ffffffff811fcbfe>] down+0x5e/0x80 kernel/locking/semaphore.c:61
 [<ffffffff812223ac>] console_lock+0x2c/0x80 kernel/printk/printk.c:2217
 [<ffffffff8122793c>] console_device+0x1c/0xc0 kernel/printk/printk.c:2554
 [<ffffffff81d2c1a5>] tty_lookup_driver drivers/tty/tty_io.c:2008 [inline]
 [<ffffffff81d2c1a5>] tty_open_by_driver drivers/tty/tty_io.c:2053 [inline]
 [<ffffffff81d2c1a5>] tty_open+0x6f5/0xdf0 drivers/tty/tty_io.c:2130
 [<ffffffff81517bdd>] chrdev_open+0x22d/0x5c0 fs/char_dev.c:392
 [<ffffffff81501e3f>] do_dentry_open+0x3ef/0xc90 fs/open.c:766
 [<ffffffff8150576c>] vfs_open+0x11c/0x210 fs/open.c:879
 [<ffffffff8153c542>] do_last fs/namei.c:3410 [inline]
 [<ffffffff8153c542>] path_openat+0x542/0x2790 fs/namei.c:3534
 [<ffffffff81541617>] do_filp_open+0x197/0x270 fs/namei.c:3568
 [<ffffffff8150617d>] do_sys_open+0x30d/0x5c0 fs/open.c:1072
 [<ffffffff8150645d>] SYSC_open fs/open.c:1090 [inline]
 [<ffffffff8150645d>] SyS_open+0x2d/0x40 fs/open.c:1085
 [<ffffffff810056ef>] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285
 [<ffffffff82817c13>] 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: [<ffffffff8131c2c0>] rcu_read_unlock include/linux/rcupdate.h:927 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff8131c2c0>] rcu_lock_break kernel/hung_task.c:143 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff8131c2c0>] check_hung_uninterruptible_tasks kernel/hung_task.c:177 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff8131c2c0>] watchdog+0x310/0xa20 kernel/hung_task.c:239
 #1:  (tasklist_lock){.+.+..}, at: [<ffffffff813fe63f>] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336
1 lock held by rsyslogd/1890:
 #0:  (&f->f_pos_lock){+.+.+.}, at: [<ffffffff8156cc7c>] __fdget_pos+0xac/0xd0 fs/file.c:781
2 locks held by getty/2017:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815ce2>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d376f2>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by kworker/u4:1/5580:
 #0:  ("events_unbound"){.+.+.+}, at: [<ffffffff81130f0c>] process_one_work+0x73c/0x15f0 kernel/workqueue.c:2085
 #1:  ((reaper_work).work){+.+...}, at: [<ffffffff81130f44>] process_one_work+0x774/0x15f0 kernel/workqueue.c:2089
1 lock held by init/25345:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bf26>] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bf26>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130
1 lock held by init/25369:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bf26>] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bf26>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130
1 lock held by init/25376:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bf26>] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bf26>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130
1 lock held by init/25377:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bf26>] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bf26>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130
1 lock held by init/25380:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bf26>] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bf26>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130
1 lock held by init/25482:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bf26>] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bf26>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130

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

NMI backtrace for cpu 0
CPU: 0 PID: 24 Comm: khungtaskd Not tainted 4.9.141+ #72
 ffff8801d9907d08 ffffffff81b43209 0000000000000000 0000000000000000
 0000000000000000 0000000000000001 ffffffff810983b0 ffff8801d9907d40
 ffffffff81b4e319 0000000000000000 0000000000000000 0000000000000003
Call Trace:
 [<ffffffff81b43209>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81b43209>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81b4e319>] nmi_cpu_backtrace.cold.0+0x48/0x87 lib/nmi_backtrace.c:99
 [<ffffffff81b4e2ac>] nmi_trigger_cpumask_backtrace+0x12c/0x151 lib/nmi_backtrace.c:60
 [<ffffffff810984b4>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37
 [<ffffffff8131c65d>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline]
 [<ffffffff8131c65d>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff8131c65d>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff8131c65d>] watchdog+0x6ad/0xa20 kernel/hung_task.c:239
 [<ffffffff81142c3d>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff82817ddc>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 25308 Comm: syz-executor0 Not tainted 4.9.141+ #72
task: ffff8801c742c740 task.stack: ffff8801cbc20000
RIP: 0010:[<ffffffff81d628db>] 
c [<ffffffff81d628db>] inb arch/x86/include/asm/io.h:316 [inline]
RIP: 0010:[<ffffffff81d628db>] 
c [<ffffffff81d628db>] io_serial_in+0x6b/0x90 drivers/tty/serial/8250/8250_port.c:413
RSP: 0018:ffff8801cbc270f8  EFLAGS: 00000002
RAX: dffffc0000000000 RBX: 00000000000003fd RCX: 0000000000000000
RDX: 00000000000003fd RSI: ffffffff81d62881 RDI: ffffffff84b5bb58
RBP: ffff8801cbc27108 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff84b5bb20
R13: 0000000000000020 R14: fffffbfff096b7ab R15: fffffbfff096b76d
FS:  00007f553cffd700(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7e48455000 CR3: 00000001a3788000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff84b5bb20
c 000000000000270c
c ffff8801cbc27158
c ffffffff81d64af4
c
 ffffffff81b6d168
c ffffffff84b5bb68
c ffffffff84b5bd5a
c ffffffff84b5bb20
c
 0000000000000034
c ffffffff81d64c40
c dffffc0000000000
c 0000000000000034
c
Call Trace:
 [<ffffffff81d64af4>] serial_in drivers/tty/serial/8250/8250.h:111 [inline]
 [<ffffffff81d64af4>] wait_for_xmitr+0x94/0x1e0 drivers/tty/serial/8250/8250_port.c:1997
 [<ffffffff81d64c5f>] serial8250_console_putchar+0x1f/0x60 drivers/tty/serial/8250/8250_port.c:3103
 [<ffffffff81d4d079>] uart_console_write+0x59/0xf0 drivers/tty/serial/serial_core.c:1866
 [<ffffffff81d6fe78>] serial8250_console_write+0x528/0x820 drivers/tty/serial/8250/8250_port.c:3169
 [<ffffffff81d5d88f>] univ8250_console_write+0x5f/0x70 drivers/tty/serial/8250/8250_core.c:594
 [<ffffffff8122387d>] call_console_drivers.isra.0.constprop.15+0x1ad/0x360 kernel/printk/printk.c:1594
 [<ffffffff812265af>] console_unlock+0x47f/0xb50 kernel/printk/printk.c:2454
 [<ffffffff812270c8>] vprintk_emit+0x448/0x790 kernel/printk/printk.c:1908
 [<ffffffff81227438>] vprintk+0x28/0x30 kernel/printk/printk.c:1918
 [<ffffffff8122745d>] vprintk_default+0x1d/0x30 kernel/printk/printk.c:1919
 [<ffffffff81402f9f>] vprintk_func kernel/printk/internal.h:36 [inline]
 [<ffffffff81402f9f>] printk+0xaf/0xd7 kernel/printk/printk.c:1980
 [<ffffffff814078dc>] audit_printk_skb.cold.12+0x3f/0x4e kernel/audit.c:397
 [<ffffffff812f1ca4>] audit_log_end+0x3b4/0x600 kernel/audit.c:2016
 [<ffffffff81a47d96>] common_lsm_audit+0x546/0x1b40 security/lsm_audit.c:448
 [<ffffffff819ecb2f>] slow_avc_audit+0x17f/0x210 security/selinux/avc.c:773
 [<ffffffff819ee048>] avc_audit security/selinux/include/avc.h:140 [inline]
 [<ffffffff819ee048>] avc_has_perm+0x2f8/0x3a0 security/selinux/avc.c:1148
 [<ffffffff819f57c8>] sock_has_perm+0x288/0x3e0 security/selinux/hooks.c:4255
 [<ffffffff819f5b0f>] selinux_socket_sendmsg+0x3f/0x50 security/selinux/hooks.c:4502
 [<ffffffff819e88a3>] security_socket_sendmsg+0x83/0xc0 security/security.c:1283
 [<ffffffff822a0953>] sock_sendmsg+0x43/0x110 net/socket.c:655
 [<ffffffff822a26ac>] ___sys_sendmsg+0x6fc/0x840 net/socket.c:1982
 [<ffffffff822a56c9>] __sys_sendmsg+0xd9/0x190 net/socket.c:2016
 [<ffffffff822a57ad>] SYSC_sendmsg net/socket.c:2027 [inline]
 [<ffffffff822a57ad>] SyS_sendmsg+0x2d/0x50 net/socket.c:2023
 [<ffffffff810056ef>] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285
 [<ffffffff82817c13>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Code: 
c24 
cc9 
c00 
c00 
c00 
c49 
c8d 
c7c 
c24 
c38 
c48 
cb8 
c00 
c00 
c00 
c00 
c00 
cfc 
cff 
cdf 
c48 
c89 
cfa 
c48 
cc1 
cea 
c03 
cd3 
ce3 
c80 
c3c 
c02 
c00 
c75 
c17 
c41 
c03 
c5c 
c24 
c38 
c89 
cda 
cec 
c<5b> 
c0f 
cb6 
cc0 
c41 
c5c 
c5d 
cc3 
ce8 
c18 
c07 
c79 
cff 
ceb 
cc2 
ce8 
c71 
c07 
c79 
cff 
ceb 
c