SELinux: unrecognized netlink message: protocol=9 nlmsg_type=29697 sclass=netlink_audit_socket
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=3549 sclass=netlink_audit_socket
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=33807 sclass=netlink_audit_socket
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=19638 sclass=netlink_audit_socket
INFO: task loop0:18536 blocked for more than 120 seconds.
      Not tainted 4.4.135-ge75204c #53
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
loop0           D ffff88009f6c6d40 26880 18536      2 0x00000000
 ffff88009f6c6d40 ffff8800ae32b8d8 ffff8800ae32b900 ffff8800ae32b8e0
 1ffff10013ed8d00 ffff8801db21fdb8 ffff8801db21fde0 ffff8801db21f4d8
 ffff8801db21f4c0 ffff8801ba231800 ffff8800ae32b000 ffff88009f6c7610
Call Trace:
 [<ffffffff838b474a>] schedule+0x7a/0x1b0 kernel/sched/core.c:3359
 [<ffffffff838bfb61>] schedule_timeout+0x481/0x8b0 kernel/time/timer.c:1515
 [<ffffffff838b260a>] io_schedule_timeout+0x1ba/0x390 kernel/sched/core.c:4941
 [<ffffffff81db234f>] io_schedule include/linux/sched.h:447 [inline]
 [<ffffffff81db234f>] bt_get+0x2af/0x760 block/blk-mq-tag.c:301
 [<ffffffff81db3645>] __blk_mq_get_tag block/blk-mq-tag.c:325 [inline]
 [<ffffffff81db3645>] blk_mq_get_tag+0x1f5/0x360 block/blk-mq-tag.c:353
 [<ffffffff81da3307>] __blk_mq_alloc_request+0x27/0xa40 block/blk-mq.c:215
 [<ffffffff81da94b2>] blk_mq_map_request.isra.42+0x732/0xe00 block/blk-mq.c:1190
 [<ffffffff81dad52d>] blk_sq_make_request+0x1ad/0xe60 block/blk-mq.c:1361
 [<ffffffff81d7f541>] generic_make_request+0x211/0x9b0 block/blk-core.c:2081
 [<ffffffff81d7fdbf>] submit_bio+0xdf/0x3b0 block/blk-core.c:2154
 [<ffffffff815e19db>] dio_bio_submit fs/direct-io.c:409 [inline]
 [<ffffffff815e19db>] do_blockdev_direct_IO+0x5aab/0x82f0 fs/direct-io.c:1283
 [<ffffffff815e42ce>] __blockdev_direct_IO+0xae/0xe0 fs/direct-io.c:1342
 [<ffffffff815d10b2>] blkdev_direct_IO+0xb2/0xe0 fs/block_dev.c:167
 [<ffffffff814240fc>] generic_file_read_iter+0x35c/0x11a0 mm/filemap.c:1799
 [<ffffffff815d3db5>] blkdev_read_iter+0x105/0x170 fs/block_dev.c:1679
 [<ffffffff8251e151>] lo_rw_aio+0x481/0x870 drivers/block/loop.c:506
 [<ffffffff825203a7>] lo_rw_simple drivers/block/loop.c:520 [inline]
 [<ffffffff825203a7>] do_req_filebacked drivers/block/loop.c:558 [inline]
 [<ffffffff825203a7>] loop_handle_cmd drivers/block/loop.c:1705 [inline]
 [<ffffffff825203a7>] loop_queue_work+0x12b7/0x1620 drivers/block/loop.c:1717
 [<ffffffff81190c73>] kthread_worker_fn+0x1c3/0x610 kernel/kthread.c:602
 [<ffffffff81190958>] kthread+0x268/0x300 kernel/kthread.c:211
 [<ffffffff838c2b95>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:510
no locks held by loop0/18536.
Sending NMI to all CPUs:
NMI backtrace for cpu 0
CPU: 0 PID: 492 Comm: khungtaskd Not tainted 4.4.135-ge75204c #53
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800baca3000 task.stack: ffff8801d8e00000
RIP: 0010:[<ffffffff810bfeb6>]  [<ffffffff810bfeb6>] native_apic_mem_write arch/x86/include/asm/apic.h:94 [inline]
RIP: 0010:[<ffffffff810bfeb6>]  [<ffffffff810bfeb6>] __default_send_IPI_dest_field arch/x86/include/asm/ipi.h:119 [inline]
RIP: 0010:[<ffffffff810bfeb6>]  [<ffffffff810bfeb6>] _flat_send_IPI_mask arch/x86/kernel/apic/apic_flat_64.c:61 [inline]
RIP: 0010:[<ffffffff810bfeb6>]  [<ffffffff810bfeb6>] flat_send_IPI_mask+0xf6/0x1a0 arch/x86/kernel/apic/apic_flat_64.c:69
RSP: 0018:ffff8801d8e07cc8  EFLAGS: 00000046
RAX: 0000000003000000 RBX: 0000000000000c00 RCX: 0000000000000000
RDX: 0000000000000c00 RSI: 0000000000000000 RDI: ffffffffff5fb300
RBP: ffff8801d8e07cf0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000246
R13: 0000000000000003 R14: 0000000000000002 R15: ffffffff8446f7a0
FS:  0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001ed7b10 CR3: 00000000b47bf000 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff8446f7a0 ffffffff84a18e60 0000000000000007 fffffbfff0942c7c
 0000000000000040 ffff8801d8e07d10 ffffffff810b5e71 ffffffff83c0b560
 0000000000000003 ffff8801d8e07d68 ffffffff81e19d83 ffff8800ae32b000
Call Trace:
 [<ffffffff810b5e71>] nmi_raise_cpu_backtrace+0x61/0x80 arch/x86/kernel/apic/hw_nmi.c:33
 [<ffffffff81e19d83>] nmi_trigger_all_cpu_backtrace.cold.4+0x70/0xad lib/nmi_backtrace.c:85
 [<ffffffff810b5f14>] arch_trigger_all_cpu_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 [<ffffffff8141a3d9>] trigger_all_cpu_backtrace include/linux/nmi.h:44 [inline]
 [<ffffffff8141a3d9>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff8141a3d9>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff8141a3d9>] watchdog.cold.1+0xd3/0xee kernel/hung_task.c:238
 [<ffffffff81190958>] kthread+0x268/0x300 kernel/kthread.c:211
 [<ffffffff838c2b95>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:510
Code: b3 5f ff f6 c4 10 75 e2 44 89 e8 c1 e0 18 89 04 25 10 b3 5f ff 44 89 f2 09 da 80 cf 04 41 83 fe 02 0f 44 d3 89 14 25 00 b3 5f ff <41> f7 c4 00 02 00 00 75 1a 4c 89 e7 57 9d 0f 1f 44 00 00 e8 72 
NMI backtrace for cpu 1
CPU: 1 PID: 23407 Comm: getty Not tainted 4.4.135-ge75204c #53
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d3a08000 task.stack: ffff88009c558000
RIP: 0010:[<ffffffff81495abe>]  [<ffffffff81495abe>] zap_pte_range mm/memory.c:1157 [inline]
RIP: 0010:[<ffffffff81495abe>]  [<ffffffff81495abe>] zap_pmd_range mm/memory.c:1262 [inline]
RIP: 0010:[<ffffffff81495abe>]  [<ffffffff81495abe>] zap_pud_range mm/memory.c:1283 [inline]
RIP: 0010:[<ffffffff81495abe>]  [<ffffffff81495abe>] unmap_page_range mm/memory.c:1307 [inline]
RIP: 0010:[<ffffffff81495abe>]  [<ffffffff81495abe>] unmap_single_vma+0xaee/0x1250 mm/memory.c:1352
RSP: 0018:ffff88009c55fa88  EFLAGS: 00000246
RAX: 1ffffd40010ff1e1 RBX: ffff8800b35a9908 RCX: ffff88009c55fc50
RDX: 0000000000000000 RSI: ffffffff81495aa3 RDI: ffffea00087f8f08
RBP: ffff88009c55fbe0 R08: ffffffff85342b00 R09: 0000000000000000
R10: 0000000000000001 R11: ffff8801d3a08000 R12: 000000021fe3c025
R13: 000000021fe3c025 R14: dffffc0000000000 R15: ffffea00087f8f00
FS:  0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2099118a30 CR3: 00000000a573e000 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff88009c55fc68 fffffbfff0942a52 00007fb1ed321fff 00007fb1ed321fff
 00007fb1ed321fff ffffed0016dacd69 ffff8800b355d108 ffff8800b8f06ca0
 ffff8800b8f06ce8 ffff88009c55fb78 ffffed00138abf8d ffff8800a5a15638
Call Trace:
 [<ffffffff81497d41>] unmap_vmas+0x81/0xd0 mm/memory.c:1382
 [<ffffffff814b0219>] exit_mmap+0x1c9/0x3a0 mm/mmap.c:2926
 [<ffffffff81125508>] __mmput kernel/fork.c:715 [inline]
 [<ffffffff81125508>] mmput+0xf8/0x2d0 kernel/fork.c:735
 [<ffffffff81135178>] exit_mm kernel/exit.c:444 [inline]
 [<ffffffff81135178>] do_exit+0x8d8/0x26b0 kernel/exit.c:746
 [<ffffffff8113b1d1>] do_group_exit+0x111/0x330 kernel/exit.c:889
 [<ffffffff8113b40d>] SYSC_exit_group kernel/exit.c:900 [inline]
 [<ffffffff8113b40d>] SyS_exit_group+0x1d/0x20 kernel/exit.c:898
 [<ffffffff838c2765>] entry_SYSCALL_64_fastpath+0x22/0x9e
Code: ff 48 89 46 10 0f 84 9b fe ff ff e8 0d ba eb ff 49 8d 7f 08 48 89 f8 48 c1 e8 03 42 80 3c 30 00 0f 85 80 05 00 00 41 f6 47 08 01 <0f> 84 df 01 00 00 e8 e7 b9 eb ff 83 6d 9c 01 e8 de b9 eb ff 4c