SELinux: unrecognized netlink message: protocol=0 nlmsg_type=3852 sclass=netlink_route_socket pig=11905 comm=syz-executor1
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=3852 sclass=netlink_route_socket pig=11882 comm=syz-executor1
INFO: rcu_preempt self-detected stall on CPU
	0-...: (1 GPs behind) idle=3bb/140000000000001/0 softirq=23237/23239 fqs=6241 
	 (t=12500 jiffies g=3837 c=3836 q=52)
Task dump for CPU 0:
syz-executor0   R  running task    28472 11915   3836 0x2002000c
 ffff8801db207c18 ffffffff81424689 ffff8801db221c00 0000000000000000
 dffffc0000000000 ffffffff846e0380 ffffffff846e0384 ffff8801db207c38
 ffffffff814249ad ffffffff846e0300 0000000000000000 ffff8801db207ca0
Call Trace:
 <IRQ> [  260.175657]  [<ffffffff81424689>] sched_show_task.cold.127+0x1c9/0x279 kernel/sched/core.c:5321
 [<ffffffff814249ad>] dump_cpu_task+0x79/0x7e kernel/sched/core.c:9046
 [<ffffffff8142eb7a>] rcu_dump_cpu_stacks+0x191/0x1c1 kernel/rcu/tree.c:1303
 [<ffffffff8142f7b6>] print_cpu_stall kernel/rcu/tree.c:1446 [inline]
 [<ffffffff8142f7b6>] check_cpu_stall kernel/rcu/tree.c:1514 [inline]
 [<ffffffff8142f7b6>] __rcu_pending kernel/rcu/tree.c:3487 [inline]
 [<ffffffff8142f7b6>] rcu_pending kernel/rcu/tree.c:3551 [inline]
 [<ffffffff8142f7b6>] rcu_check_callbacks.cold.79+0x43a/0xd27 kernel/rcu/tree.c:2880
 [<ffffffff812a0990>] update_process_times+0x30/0x70 kernel/time/timer.c:1629
 [<ffffffff812cc565>] tick_sched_handle.isra.14+0x55/0xf0 kernel/time/tick-sched.c:151
 [<ffffffff812ccd82>] tick_sched_timer+0x72/0x120 kernel/time/tick-sched.c:1190
 [<ffffffff812a4645>] __run_hrtimer kernel/time/hrtimer.c:1255 [inline]
 [<ffffffff812a4645>] __hrtimer_run_queues+0x375/0xe50 kernel/time/hrtimer.c:1319
 [<ffffffff812a5b81>] hrtimer_interrupt+0x1b1/0x430 kernel/time/hrtimer.c:1353
 [<ffffffff810b1d34>] local_apic_timer_interrupt+0x74/0xa0 arch/x86/kernel/apic/apic.c:935
 [<ffffffff839fd49c>] smp_apic_timer_interrupt+0x7c/0xa0 arch/x86/kernel/apic/apic.c:959
 [<ffffffff839f9630>] apic_timer_interrupt+0xa0/0xb0 arch/x86/entry/entry_64.S:648
 <EOI> [  260.283908]  [<ffffffff8160fb18>] ? do_make_slave fs/pnode.c:84 [inline]
 <EOI> [  260.283908]  [<ffffffff8160fb18>] ? change_mnt_propagation+0x88/0xbd0 fs/pnode.c:130
 [<ffffffff815dbf06>] umount_tree+0x326/0x820 fs/namespace.c:1516
 [<ffffffff815e4110>] attach_recursive_mnt+0x750/0x8f0 fs/namespace.c:2058
 [<ffffffff815e441f>] graft_tree+0x16f/0x1f0 fs/namespace.c:2122
 [<ffffffff815e6ddf>] do_loopback fs/namespace.c:2243 [inline]
 [<ffffffff815e6ddf>] do_mount+0x1f5f/0x2740 fs/namespace.c:2829
 [<ffffffff8168c31c>] C_SYSC_mount fs/compat.c:810 [inline]
 [<ffffffff8168c31c>] compat_SyS_mount+0x4fc/0xff0 fs/compat.c:775
 [<ffffffff81006da7>] do_syscall_32_irqs_on arch/x86/entry/common.c:325 [inline]
 [<ffffffff81006da7>] do_fast_syscall_32+0x2f7/0x870 arch/x86/entry/common.c:387
 [<ffffffff839f93d0>] entry_SYSENTER_compat+0x90/0xa2 arch/x86/entry/entry_64_compat.S:137