SELinux: unrecognized netlink message: protocol=0 nlmsg_type=69 sclass=netlink_route_socket pig=18496 comm=syz-executor6
netlink: 17 bytes leftover after parsing attributes in process `syz-executor0'.
netlink: 17 bytes leftover after parsing attributes in process `syz-executor0'.
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=69 sclass=netlink_route_socket pig=18526 comm=syz-executor6
INFO: task syz-executor5:18464 blocked for more than 120 seconds.
      Not tainted 4.9.109-ge1815b3 #52
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor5   D28928 18464   3837 0x00000004
 ffff880198b01800 ffff8801d3012a00 ffff8801d30124c0 ffff88018ed94800
 ffff8801db321c18 ffff8801d41d78f0 ffffffff839e8a8d 0000000041b58ab3
 ffffffff843c2288 ffffffff81236160 00ff880198b01800 ffff8801db3224e8
Call Trace:
 [<ffffffff839ea08f>] schedule+0x7f/0x1b0 kernel/sched/core.c:3557
 [<ffffffff839f64a1>] schedule_timeout+0x861/0xf70 kernel/time/timer.c:1768
 [<ffffffff839e826a>] io_schedule_timeout+0x1ba/0x390 kernel/sched/core.c:5180
 [<ffffffff839eb4d9>] io_schedule include/linux/sched.h:460 [inline]
 [<ffffffff839eb4d9>] bit_wait_io+0x19/0xa0 kernel/sched/wait.c:582
 [<ffffffff839ead7e>] __wait_on_bit_lock+0xce/0x1c0 kernel/sched/wait.c:421
 [<ffffffff8143451f>] __lock_page+0xff/0x160 mm/filemap.c:934
 [<ffffffff8146b758>] lock_page include/linux/pagemap.h:454 [inline]
 [<ffffffff8146b758>] truncate_inode_pages_range+0x818/0x1290 mm/truncate.c:373
 [<ffffffff8163288d>] blkdev_fallocate+0x21d/0x440 fs/block_dev.c:1817
 [<ffffffff815686b9>] vfs_fallocate+0x359/0x600 fs/open.c:329
 [<ffffffff8156b5c3>] SYSC_fallocate fs/open.c:352 [inline]
 [<ffffffff8156b5c3>] SyS_fallocate+0x53/0x90 fs/open.c:346
 [<ffffffff81006316>] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
 [<ffffffff839f9993>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb

Showing all locks held in the system:
2 locks held by khungtaskd/519:
 #0:  (rcu_read_lock){......}, at: [<ffffffff8136662c>] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff8136662c>] watchdog+0x11c/0xa20 kernel/hung_task.c:239
 #1:  (tasklist_lock){.+.+..}, at: [<ffffffff81425cb7>] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336
1 lock held by rsyslogd/3678:
 #0:  (&f->f_pos_lock){+.+.+.}, at: [<ffffffff815d803c>] __fdget_pos+0xac/0xd0 fs/file.c:781
2 locks held by getty/3775:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff839f7b32>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+.+.}, at: [<ffffffff8211fce2>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2133
1 lock held by syz-executor5/18464:
 #0:  (sb_writers){.+.+.+}, at: [<ffffffff8156865b>] sb_start_write include/linux/fs.h:1573 [inline]
 #0:  (sb_writers){.+.+.+}, at: [<ffffffff8156865b>] vfs_fallocate+0x2fb/0x600 fs/open.c:328
1 lock held by syz-executor5/18528:
 #0:  (sb_writers){.+.+.+}, at: [<ffffffff8156865b>] sb_start_write include/linux/fs.h:1573 [inline]
 #0:  (sb_writers){.+.+.+}, at: [<ffffffff8156865b>] vfs_fallocate+0x2fb/0x600 fs/open.c:328

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

NMI backtrace for cpu 1
CPU: 1 PID: 519 Comm: khungtaskd Not tainted 4.9.109-ge1815b3 #52
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d8647d08 ffffffff81eb3e29 0000000000000000 0000000000000001
 0000000000000001 0000000000000001 ffffffff810b9580 ffff8801d8647d40
 ffffffff81ebf127 0000000000000001 0000000000000000 0000000000000003
Call Trace:
 [<ffffffff81eb3e29>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81eb3e29>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81ebf127>] nmi_cpu_backtrace.cold.2+0x48/0x87 lib/nmi_backtrace.c:99
 [<ffffffff81ebf0ba>] nmi_trigger_cpumask_backtrace+0x12a/0x14f lib/nmi_backtrace.c:60
 [<ffffffff810b9684>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37
 [<ffffffff81366bc4>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline]
 [<ffffffff81366bc4>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff81366bc4>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff81366bc4>] watchdog+0x6b4/0xa20 kernel/hung_task.c:239
 [<ffffffff8119d04d>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff839f9b5c>] 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: 1704 Comm: kworker/0:2 Not tainted 4.9.109-ge1815b3 #52
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801cf424800 task.stack: ffff8801cf018000
RIP: 0010:[<ffffffff81237147>] 
c [<ffffffff81237147>] __read_once_size include/linux/compiler.h:243 [inline]
RIP: 0010:[<ffffffff81237147>] 
c [<ffffffff81237147>] lookup_chain_cache kernel/locking/lockdep.c:2138 [inline]
RIP: 0010:[<ffffffff81237147>] 
c [<ffffffff81237147>] validate_chain kernel/locking/lockdep.c:2236 [inline]
RIP: 0010:[<ffffffff81237147>] 
c [<ffffffff81237147>] __lock_acquire+0xfe7/0x4070 kernel/locking/lockdep.c:3345
RSP: 0018:ffff8801cf01f920  EFLAGS: 00000083
RAX: ffffffff84f8a928 RBX: ffff8801cf4250f0 RCX: 0000000012e1b0d5
RDX: 1ffffffff09f2ef9 RSI: ffff8801cf4250f0 RDI: ffffffff84f8a938
RBP: ffff8801cf01fad0 R08: ffff8801cf425110 R09: 0000000000000000
R10: ffff8801cf424800 R11: 1ffff10039e84a1d R12: ffffffff84f8a928
R13: dffffc0000000000 R14: 0000000000000000 R15: c702248533bb8c93
FS:  0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000130 CR3: 00000001cba35000 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000021
c 0000000000000000
c 0000000000000000
c ffff8801cf4250ea
c
 ffff8801cf01fb00
c ffff8801cf424800
c ffffed0039e84a18
c ffff8801cf4250c8
c
 ffffffff846def20
c 0000000000000000
c ffffffff855891b0
c ffffffff812301d2
c
Call Trace:
 [<ffffffff8123ac40>] lock_acquire+0x130/0x3e0 kernel/locking/lockdep.c:3756
 [<ffffffff839f98ae>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:112 [inline]
 [<ffffffff839f98ae>] _raw_spin_lock_irqsave+0x4e/0x62 kernel/locking/spinlock.c:159
 [<ffffffff81f1c807>] debug_object_deactivate+0xf7/0x340 lib/debugobjects.c:475
 [<ffffffff8118ccbe>] debug_work_deactivate kernel/workqueue.c:496 [inline]
 [<ffffffff8118ccbe>] process_one_work+0x37e/0x1500 kernel/workqueue.c:2051
 [<ffffffff8118df16>] worker_thread+0xd6/0x10a0 kernel/workqueue.c:2226
 [<ffffffff8119d04d>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff839f9b5c>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373
Code: 
c49 
c83 
cfc 
c08 
c74 
c3d 
c49 
c8d 
c7c 
c24 
c10 
c48 
c89 
cf8 
c48 
cc1 
ce8 
c03 
c42 
c80 
c3c 
c28 
c00 
c0f 
c85 
c60 
c22 
c00 
c00 
c4d 
c3b 
c7c 
c24 
c10 
c0f 
c84 
ca2 
cf8 
cff 
cff 
c4c 
c89 
ce0 
c<48> 
cc1 
ce8 
c03 
c42 
c80 
c3c 
c28 
c00 
c0f 
c85 
c22 
c22 
c00 
c00 
c4d 
c8b 
c24 
c24 
c4d 
c85 
c