Free swap  = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
313617 pages reserved
INFO: task init:12570 blocked for more than 140 seconds.
      Not tainted 4.9.141+ #23
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
init            D
29336 12570      1 0x00000000
 0000000000000000 ffff8801cf263180 ffffffff83029180 ffff8801db621018
 ffff8801c87cf738 ffffffff828075c2 0000000000000000 ffff8801d087cff0
 ffffed003a10f9fd 00ff8801d087c740 ffff8801db6218f0Call Trace:
 [<ffffffff82808aef>] schedule+0x7f/0x1b0 kernel/sched/core.c:3553
 [<ffffffff828094a3>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3586
 [<ffffffff8280b51d>] __mutex_lock_common kernel/locking/mutex.c:582 [inline]
 [<ffffffff8280b51d>] mutex_lock_nested+0x38d/0x900 kernel/locking/mutex.c:621
 [<ffffffff81d2bb96>] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline]
 [<ffffffff81d2bb96>] tty_open+0x476/0xdf0 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
 [<ffffffff82817893>] 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: [<ffffffff8131c0cc>] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline]
 (rcu_read_lock){......}, at: [<ffffffff8131c0cc>] watchdog+0x11c/0xa20 kernel/hung_task.c:239
 (tasklist_lock){.+.+..}, at: [<ffffffff813fe63f>] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336
 #0: 
 (&f->f_pos_lock){+.+.+.}, at: [<ffffffff8156cc7c>] __fdget_pos+0xac/0xd0 fs/file.c:781
 #0: 
 (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
 #0: 
 (tty_mutex){+.+.+.}, at: [<ffffffff81d2bb96>] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline]
 (tty_mutex){+.+.+.}, at: [<ffffffff81d2bb96>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130
 #0: 
 (tty_mutex){+.+.+.}, at: [<ffffffff81d2bb96>] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline]
 (tty_mutex){+.+.+.}, at: [<ffffffff81d2bb96>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130
 #0: 
 (tty_mutex){+.+.+.}, at: [<ffffffff81d2bb96>] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline]
 (tty_mutex){+.+.+.}, at: [<ffffffff81d2bb96>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130
 #0: 
 (tty_mutex){+.+.+.}, at: [<ffffffff81d2bb96>] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline]
 (tty_mutex){+.+.+.}, at: [<ffffffff81d2bb96>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130
 #0: 
 (tty_mutex){+.+.+.}, at: [<ffffffff81d2bb96>] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline]
 (tty_mutex){+.+.+.}, at: [<ffffffff81d2bb96>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130
=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.141+ #23
 ffff8801d9907d08
 ffffffff81b42e79 0000000000000000 0000000000000001 0000000000000001
 0000000000000001 ffffffff810983b0 ffff8801d9907d40 ffffffff81b4df89
 0000000000000001 0000000000000000 0000000000000003Call Trace:
 [<ffffffff81b42e79>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81b42e79>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81b4df89>] nmi_cpu_backtrace.cold.0+0x48/0x87 lib/nmi_backtrace.c:99
 [<ffffffff81b4df1c>] 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
 [<ffffffff82817a5c>] 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: 2244 Comm: syz-executor.3 Not tainted 4.9.141+ #23
task: ffff8801c95d2f80 task.stack: ffff8801c9658000
RIP: 0010:[<ffffffff814f2004>] 
c [<ffffffff814f2004>] kasan_kmalloc.part.1+0xd4/0xf0 mm/kasan/kasan.c:610
RSP: 0018:ffff8801c965fb08  EFLAGS: 00000296
RAX: 00000000cac000ed RBX: ffff8801d2b42d58 RCX: 0000000000000000
RDX: ffff8801c965f980 RSI: ffff8801c99ce5f8 RDI: 0000000000000000
RBP: ffff8801c965fb10 R08: 0000000000000010 R09: ffff8801c965f900
R10: ffffed00392cbf13 R11: ffff8801c965f89f R12: 0000000002408040
R13: 0000000000000000 R14: ffff8801d2b42cb0 R15: ffff8801d2b42d57
FS:  0000000000000000(0000) GS:ffff8801db600000(0063) knlGS:0000000009c78900
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000009c811b4 CR3: 00000001c9553000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8801da550640
c ffff8801c965fb58
c ffffffff814f230f
c 00000000000000a8
c
 02408040812073ad
c ffff8801c9a08e40
c ffff8801da550640
c 0000000002408040
c
 ffffffff819fbd80
c ffff8801d2b42cb0
c ffff8801c965fb68
c ffffffff814f28d2
c
Call Trace:
 [<ffffffff814f230f>] kasan_kmalloc+0xaf/0xc0 mm/kasan/kasan.c:594
 [<ffffffff814f28d2>] kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:547
 [<ffffffff814edc75>] slab_post_alloc_hook mm/slab.h:417 [inline]
 [<ffffffff814edc75>] slab_alloc_node mm/slub.c:2715 [inline]
 [<ffffffff814edc75>] slab_alloc mm/slub.c:2723 [inline]
 [<ffffffff814edc75>] kmem_cache_alloc+0xd5/0x2b0 mm/slub.c:2728
 [<ffffffff819fbd80>] kmem_cache_zalloc include/linux/slab.h:626 [inline]
 [<ffffffff819fbd80>] inode_alloc_security security/selinux/hooks.c:231 [inline]
 [<ffffffff819fbd80>] selinux_inode_alloc_security+0xb0/0x270 security/selinux/hooks.c:2825
 [<ffffffff819e3bfa>] security_inode_alloc+0x9a/0xe0 security/security.c:350
 [<ffffffff8155f79a>] inode_init_always+0x47a/0x9b0 fs/inode.c:166
 [<ffffffff81560ac0>] alloc_inode+0x80/0x180 fs/inode.c:214
 [<ffffffff81566557>] new_inode_pseudo+0x17/0xe0 fs/inode.c:890
 [<ffffffff8229e311>] sock_alloc+0x41/0x280 net/socket.c:571
 [<ffffffff8229f08d>] __sock_create+0x8d/0x5f0 net/socket.c:1159
 [<ffffffff822a2aae>] sock_create net/socket.c:1235 [inline]
 [<ffffffff822a2aae>] SYSC_socket net/socket.c:1265 [inline]
 [<ffffffff822a2aae>] SyS_socket+0xee/0x1f0 net/socket.c:1245
 [<ffffffff82390761>] C_SYSC_socketcall net/compat.c:810 [inline]
 [<ffffffff82390761>] compat_SyS_socketcall+0x381/0x680 net/compat.c:785
 [<ffffffff81006311>] do_syscall_32_irqs_on arch/x86/entry/common.c:328 [inline]
 [<ffffffff81006311>] do_fast_syscall_32+0x2f1/0xa10 arch/x86/entry/common.c:390
 [<ffffffff82818de0>] entry_SYSENTER_compat+0x90/0xa2 arch/x86/entry/entry_64_compat.S:137
Code: 
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