SELinux:  policydb magic number 0x100 does not match expected magic number 0xf97cff8c
SELinux:  policydb magic number 0x100 does not match expected magic number 0xf97cff8c
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 257s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=5/256
    in-flight: 6699:rtc_timer_do_work
    pending: destroy_super_work, free_obj_work, vmstat_shepherd, xfrm_state_gc_task
workqueue events_power_efficient: flags=0x80
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256
    pending: check_lifetime
workqueue lru-add-drain: flags=0x8
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256
    pending: lru_add_drain_per_cpu BAR(13709)
workqueue writeback: flags=0x4e
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=2/256
    in-flight: 2436:wb_workfn
    pending: wb_workfn
workqueue vmstat: flags=0xc
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256
    pending: vmstat_update
workqueue dm_bufio_cache: flags=0x8
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256
    pending: work_fn
pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=257s workers=3 idle: 346 22
pool 4: cpus=0-1 flags=0x4 nice=0 hung=0s workers=11 idle: 2617 9865 6 9858 2445 3723 3462 64 2440 2676
INFO: task syz-executor1:2319 blocked for more than 140 seconds.
      Not tainted 4.9.124+ #32
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor1   D28216  2319   2295 0x00000000
 ffff8801d5d54740 ffff8801a9aaa680 ffff8801bf3ccd00 ffff8801c4f40000
 ffff8801db6210d8 ffff8801a68df9c8 ffffffff8277c942 0000000000000000
 ffff8801d5d54ff0 ffffed003abaa9fd 00ff8801d5d54740 ffff8801db6219b0
Call Trace:
 [<ffffffff8277de6f>] schedule+0x7f/0x1b0 kernel/sched/core.c:3553
 [<ffffffff8277e7f3>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3586
 [<ffffffff82780476>] __mutex_lock_common kernel/locking/mutex.c:582 [inline]
 [<ffffffff82780476>] mutex_lock_nested+0x326/0x870 kernel/locking/mutex.c:621
 [<ffffffff81d8955c>] lo_ioctl+0x8c/0x1670 drivers/block/loop.c:1353
 [<ffffffff81abf4d4>] __blkdev_driver_ioctl block/ioctl.c:294 [inline]
 [<ffffffff81abf4d4>] blkdev_ioctl+0x7a4/0x1a50 block/ioctl.c:590
 [<ffffffff815b7f2e>] block_ioctl+0xde/0x120 fs/block_dev.c:1688
 [<ffffffff8153948c>] vfs_ioctl fs/ioctl.c:43 [inline]
 [<ffffffff8153948c>] file_ioctl fs/ioctl.c:493 [inline]
 [<ffffffff8153948c>] do_vfs_ioctl+0x1ac/0x11a0 fs/ioctl.c:677
 [<ffffffff8153a50f>] SYSC_ioctl fs/ioctl.c:694 [inline]
 [<ffffffff8153a50f>] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:685
 [<ffffffff8100554f>] do_syscall_64+0x19f/0x480 arch/x86/entry/common.c:282
 [<ffffffff8278ba53>] 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: [<ffffffff8131401c>] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff8131401c>] watchdog+0x11c/0xa20 kernel/hung_task.c:239
 #1:  (tasklist_lock){.+.+..}, at: [<ffffffff813f93a9>] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336
2 locks held by getty/2220:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82789b12>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81cddf12>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
1 lock held by syz-executor1/2319:
 #0:  (&lo->lo_ctl_mutex/1){+.+.+.}, at: [<ffffffff81d8955c>] lo_ioctl+0x8c/0x1670 drivers/block/loop.c:1353
3 locks held by kworker/u4:2/2436:
 #0:  ("writeback"){++++.+}, at: [<ffffffff8112fc00>] process_one_work+0x6a0/0x1470 kernel/workqueue.c:2085
 #1:  ((&(&wb->dwork)->work)){+.+.+.}, at: [<ffffffff8112fc38>] process_one_work+0x6d8/0x1470 kernel/workqueue.c:2089
 #2:  (&type->s_umount_key#28){++++..}, at: [<ffffffff81507090>] trylock_super+0x20/0xf0 fs/super.c:393
2 locks held by /selinux/avc/ca/13694:
 #0:  (&lo->lo_ctl_mutex/1){+.+.+.}, at: [<ffffffff81d8955c>] lo_ioctl+0x8c/0x1670 drivers/block/loop.c:1353
 #1:  (lock#2){+.+...}, at: [<ffffffff81437cfa>] lru_add_drain_all+0x4a/0x400 mm/swap.c:695
1 lock held by syz-executor6/13705:
 #0:  (&lo->lo_ctl_mutex/1){+.+.+.}, at: [<ffffffff81d8955c>] lo_ioctl+0x8c/0x1670 drivers/block/loop.c:1353
1 lock held by syz-executor6/13738:
 #0:  (&lo->lo_ctl_mutex/1){+.+.+.}, at: [<ffffffff81d8955c>] lo_ioctl+0x8c/0x1670 drivers/block/loop.c:1353
1 lock held by blkid/13700:
 #0:  (&lo->lo_ctl_mutex/1){+.+.+.}, at: [<ffffffff81d8955c>] lo_ioctl+0x8c/0x1670 drivers/block/loop.c:1353
3 locks held by syz-executor2/13709:
 #0:  (&lo->lo_ctl_mutex/1){+.+.+.}, at: [<ffffffff81d8955c>] lo_ioctl+0x8c/0x1670 drivers/block/loop.c:1353
 #1:  (lock#2){+.+...}, at: [<ffffffff81437cfa>] lru_add_drain_all+0x4a/0x400 mm/swap.c:695
 #2:  (cpu_hotplug.dep_map){++++++}, at: [<ffffffff810e2902>] get_online_cpus+0x32/0x90 kernel/cpu.c:253
1 lock held by syz-executor2/13715:
 #0:  (&lo->lo_ctl_mutex/1){+.+.+.}, at: [<ffffffff81d8955c>] lo_ioctl+0x8c/0x1670 drivers/block/loop.c:1353

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

NMI backtrace for cpu 0
CPU: 0 PID: 24 Comm: khungtaskd Not tainted 4.9.124+ #32
 ffff8801d9497d08 ffffffff81af4529 0000000000000000 0000000000000000
 0000000000000000 0000000000000001 ffffffff81096740 ffff8801d9497d40
 ffffffff81aff287 0000000000000000 0000000000000000 0000000000000003
Call Trace:
 [<ffffffff81af4529>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81af4529>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81aff287>] nmi_cpu_backtrace.cold.0+0x48/0x87 lib/nmi_backtrace.c:99
 [<ffffffff81aff21a>] nmi_trigger_cpumask_backtrace+0x12a/0x14f lib/nmi_backtrace.c:60
 [<ffffffff81096844>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37
 [<ffffffff813145ad>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline]
 [<ffffffff813145ad>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff813145ad>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff813145ad>] watchdog+0x6ad/0xa20 kernel/hung_task.c:239
 [<ffffffff811410dd>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff8278bc1c>] 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: 6699 Comm: kworker/1:3 Not tainted 4.9.124+ #32
Workqueue: events rtc_timer_do_work
c
task: ffff8801a3a6af80 task.stack: ffff8801d8600000
RIP: 0010:[<ffffffff81201f16>] 
c [<ffffffff81201f16>] mark_held_locks+0xa6/0x130 kernel/locking/lockdep.c:2652
RSP: 0018:ffff8801d8607990  EFLAGS: 00000002
RAX: 0000000000000000 RBX: 0000000000000002 RCX: 1ffff1003474d70f
RDX: 0000000000000002 RSI: ffff8801a3a6b880 RDI: ffff8801a3a6b8a2
RBP: ffff8801d86079d0 R08: ffff8801a3a6b878 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801a3a6b830
R13: ffffed003474d705 R14: ffff8801a3a6af80 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f961ac24000 CR3: 00000001c3834000 CR4: 00000000001606b0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Stack:
 0000000000000000
c ffff8801a3a6b828
c 0000000600000007
c ffff8801a3a6af80
c
 ffffffff8278b17a
c ffff8801d4cfdac8
c 0000000000000292
c dffffc0000000000
c
 ffff8801d86079f0
c ffffffff8120232b
c 0000000000000292
c ffff8801d4cfdac8
c
Call Trace:
 [<ffffffff8120232b>] __trace_hardirqs_on_caller kernel/locking/lockdep.c:2689 [inline]
 [<ffffffff8120232b>] trace_hardirqs_on_caller+0x38b/0x590 kernel/locking/lockdep.c:2736
 [<ffffffff8120253d>] trace_hardirqs_on+0xd/0x10 kernel/locking/lockdep.c:2743
 [<ffffffff8278b17a>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:162 [inline]
 [<ffffffff8278b17a>] _raw_spin_unlock_irqrestore+0x5a/0x70 kernel/locking/spinlock.c:191
 [<ffffffff8201e184>] spin_unlock_irqrestore include/linux/spinlock.h:362 [inline]
 [<ffffffff8201e184>] rtc_handle_legacy_irq+0x114/0x190 drivers/rtc/interface.c:521
 [<ffffffff8201e24f>] rtc_uie_update_irq+0x1f/0x30 drivers/rtc/interface.c:550
 [<ffffffff8201e53f>] rtc_timer_do_work+0x1ff/0x5e0 drivers/rtc/interface.c:881
 [<ffffffff8112fcf1>] process_one_work+0x791/0x1470 kernel/workqueue.c:2092
 [<ffffffff81130aa6>] worker_thread+0xd6/0x10a0 kernel/workqueue.c:2226
 [<ffffffff811410dd>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff8278bc1c>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373
Code: 
c08 
c00 
c00 
c49 
cc1 
ced 
c03 
c4d 
c01 
cfd 
c48 
c63 
cc3 
c48 
c8d 
c04 
c80 
c49 
c8d 
c34 
cc4 
c48 
c8d 
c7e 
c22 
c48 
c89 
cf8 
c48 
c89 
cfa 
c48 
cc1 
ce8 
c03 
c83 
ce2 
c07 
c42 
c0f 
cb6 
c04 
c38 
c<38> 
cd0 
c7f 
c04 
c84 
cc0 
c75 
c5e 
c0f 
cb6 
c46 
c22 
c8b 
c55 
cd4 
ca8 
c03 
c0f 
c45 
c55 
cd0 
c