SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket
INFO: task init:3864 blocked for more than 140 seconds.
      Not tainted 4.4.174+ #4
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
init            D ffff8801d27bf718 28560  3864      1 0x00000000
 ffff8801d27bf718 ffff8801d464af80 cf8f1a2e5977d33f ffff8801d464af80
 0000000000000000 ffff8801d464b800 ffff8801db61f180 ffff8801db61f1a8
 ffff8801db61e898 ffffffff82e151c0 ffff8801d464af80 ffffed003a4f7001
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
 [<ffffffff81c8b2aa>] tty_open+0x56a/0xf50 drivers/tty/tty_io.c:2067
 [<ffffffff814a3ec0>] chrdev_open+0x230/0x630 fs/char_dev.c:388
 [<ffffffff8149154f>] do_dentry_open+0x38f/0xbd0 fs/open.c:749
 [<ffffffff81494d3b>] vfs_open+0x10b/0x210 fs/open.c:862
 [<ffffffff814c5ddf>] do_last fs/namei.c:3269 [inline]
 [<ffffffff814c5ddf>] path_openat+0x136f/0x4470 fs/namei.c:3406
 [<ffffffff814ccab1>] do_filp_open+0x1a1/0x270 fs/namei.c:3440
 [<ffffffff81495668>] do_sys_open+0x2f8/0x600 fs/open.c:1038
 [<ffffffff8149599d>] SYSC_open fs/open.c:1056 [inline]
 [<ffffffff8149599d>] SyS_open+0x2d/0x40 fs/open.c:1051
 [<ffffffff82718ba1>] entry_SYSCALL_64_fastpath+0x1e/0x9a
1 lock held by init/3864:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81c8b2aa>] tty_open+0x56a/0xf50 drivers/tty/tty_io.c:2067
Sending NMI to all CPUs:
NMI backtrace for cpu 0
CPU: 0 PID: 20 Comm: khungtaskd Not tainted 4.4.174+ #4
task: ffff8801da6c4740 task.stack: ffff8801d9ef0000
RIP: 0010:[<ffffffff8109b617>]  [<ffffffff8109b617>] _flat_send_IPI_mask arch/x86/kernel/apic/apic_flat_64.c:62 [inline]
RIP: 0010:[<ffffffff8109b617>]  [<ffffffff8109b617>] flat_send_IPI_mask+0xf7/0x1b0 arch/x86/kernel/apic/apic_flat_64.c:69
RSP: 0018:ffff8801d9ef7c88  EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000c00 RCX: 0000000000000000
RDX: 0000000000000c00 RSI: 0000000000000000 RDI: ffffffffff5fc300
RBP: ffff8801d9ef7cb8 R08: 0000000000000018 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000246
R13: 0000000003000000 R14: ffffffff82e5f2e0 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000625208 CR3: 00000001d405d000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000001 ffffffff82e5f2e0 ffffffff831a6ac0 fffffbfff0634c34
 000000000001b6c0 0000000000000008 ffff8801d9ef7cd8 ffffffff81092bee
 0000000000000008 ffffffff82924260 ffff8801d9ef7d30 ffffffff81ab8252
Call Trace:
 [<ffffffff81092bee>] nmi_raise_cpu_backtrace+0x5e/0x80 arch/x86/kernel/apic/hw_nmi.c:33
 [<ffffffff81ab8252>] nmi_trigger_all_cpu_backtrace.cold+0xa1/0xae lib/nmi_backtrace.c:85
 [<ffffffff81092ca4>] arch_trigger_all_cpu_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 [<ffffffff813b4762>] trigger_all_cpu_backtrace include/linux/nmi.h:44 [inline]
 [<ffffffff813b4762>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff813b4762>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff813b4762>] watchdog.cold+0xd3/0xee kernel/hung_task.c:238
 [<ffffffff811342c3>] kthread+0x273/0x310 kernel/kthread.c:211
 [<ffffffff82718fc5>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:537
Code: 00 c3 5f ff 80 e6 10 75 e1 41 c1 e5 18 44 89 2c 25 10 c3 5f ff 44 89 fa 09 da 80 cf 04 41 83 ff 02 0f 44 d3 89 14 25 00 c3 5f ff <41> f7 c4 00 02 00 00 75 1e 4c 89 e7 57 9d 0f 1f 44 00 00 e8 f1 
NMI backtrace for cpu 1
CPU: 1 PID: 10192 Comm: udevd Not tainted 4.4.174+ #4
task: ffff8800b8c717c0 task.stack: ffff8801cedd8000
RIP: 0010:[<ffffffff8147d99c>]  [<ffffffff8147d99c>] allocate_slab mm/slub.c:1457 [inline]
RIP: 0010:[<ffffffff8147d99c>]  [<ffffffff8147d99c>] new_slab+0x29c/0x380 mm/slub.c:1549
RSP: 0018:ffff8801ceddfa78  EFLAGS: 00000006
RAX: 0000000000000000 RBX: 00000000024000c0 RCX: 00000000024000c0
RDX: 00000000ffffffff RSI: 0000000000400000 RDI: ffff8801da401280
RBP: ffff8801ceddfab0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000001000c R14: ffff8801db721fd0 R15: ffff8801da401280
FS:  00007fdd42f2e7a0(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdd428eb518 CR3: 00000001d405d000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000000 ffff8800b8327410 00000000024000c0 0000000000000000
 ffff8801da401280 ffff8801db721fd0 0000000000000000 ffff8801ceddfb88
 ffffffff8147fc63 0000000000000000 ffffea0002e91e10 ffffffff8159da02
Call Trace:
 [<ffffffff8147fc63>] new_slab_objects mm/slub.c:2319 [inline]
 [<ffffffff8147fc63>] ___slab_alloc.constprop.0+0x323/0x3e0 mm/slub.c:2476
 [<ffffffff8147fd70>] __slab_alloc.isra.0.constprop.0+0x50/0xa0 mm/slub.c:2518
 [<ffffffff8148065c>] slab_alloc_node mm/slub.c:2581 [inline]
 [<ffffffff8148065c>] slab_alloc mm/slub.c:2623 [inline]
 [<ffffffff8148065c>] __kmalloc+0x27c/0x330 mm/slub.c:3609
 [<ffffffff8159da02>] kmalloc include/linux/slab.h:481 [inline]
 [<ffffffff8159da02>] load_elf_phdrs+0xb2/0x140 fs/binfmt_elf.c:423
 [<ffffffff815a2bf5>] load_elf_binary+0x815/0x4b80 fs/binfmt_elf.c:812
 [<ffffffff814aba1f>] search_binary_handler fs/exec.c:1475 [inline]
 [<ffffffff814aba1f>] search_binary_handler+0x14f/0x700 fs/exec.c:1453
 [<ffffffff814adc17>] exec_binprm fs/exec.c:1517 [inline]
 [<ffffffff814adc17>] do_execveat_common.isra.0+0x1007/0x1e90 fs/exec.c:1639
 [<ffffffff814af422>] do_execve fs/exec.c:1683 [inline]
 [<ffffffff814af422>] SYSC_execve fs/exec.c:1764 [inline]
 [<ffffffff814af422>] SyS_execve+0x42/0x50 fs/exec.c:1759
 [<ffffffff82718ef5>] stub_execve+0x5/0x5 arch/x86/entry/entry_64.S:440
Code: 2f ff ff ff 48 89 de 4c 89 ff e8 20 6d 00 00 48 89 df 49 8b 47 48 e8 64 04 2a 01 48 89 de 4c 89 ff e8 29 6d 00 00 e9 e2 fe ff ff <e8> ff 1b d8 ff fb 66 0f 1f 44 00 00 e9 95 fd ff ff 49 8b 04 24