SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=20273 comm=syz-executor.4 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=20289 comm=syz-executor.2 rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-...!: (1 GPs behind) idle=a8a/1/0x4000000000000004 softirq=32848/32850 fqs=19 rcu: (t=10502 jiffies g=24369 q=782) rcu: rcu_preempt kthread starved for 10465 jiffies! g24369 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 rcu: RCU grace-period kthread stack dump: rcu_preempt R running task 29208 10 2 0x80000000 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x78c/0x1c10 kernel/sched/core.c:3515 schedule+0x7f/0x1b0 kernel/sched/core.c:3559 schedule_timeout+0x3ab/0xda0 kernel/time/timer.c:1806 rcu_gp_kthread+0xce6/0x23d0 kernel/rcu/tree.c:2202 kthread+0x324/0x3e0 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 NMI backtrace for cpu 0 CPU: 0 PID: 20903 Comm: syz-executor.2 Not tainted 4.19.109-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x123/0x177 lib/dump_stack.c:118 nmi_cpu_backtrace.cold.4+0x3e/0x76 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0xe6/0x11a lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_dump_cpu_stacks+0x175/0x1c2 kernel/rcu/tree.c:1340 print_cpu_stall kernel/rcu/tree.c:1478 [inline] check_cpu_stall kernel/rcu/tree.c:1550 [inline] __rcu_pending kernel/rcu/tree.c:3293 [inline] rcu_pending kernel/rcu/tree.c:3336 [inline] rcu_check_callbacks.cold.81+0x5cc/0xd67 kernel/rcu/tree.c:2682 update_process_times+0x2a/0x60 kernel/time/timer.c:1638 tick_sched_handle+0x77/0x140 kernel/time/tick-sched.c:168 tick_sched_timer+0x37/0xf0 kernel/time/tick-sched.c:1278 __run_hrtimer kernel/time/hrtimer.c:1401 [inline] __hrtimer_run_queues+0x2f7/0xab0 kernel/time/hrtimer.c:1463 hrtimer_interrupt+0x2df/0x760 kernel/time/hrtimer.c:1521 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1067 [inline] smp_apic_timer_interrupt+0x114/0x540 arch/x86/kernel/apic/apic.c:1092 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:lock_release+0x44e/0x850 kernel/locking/lockdep.c:3925 Code: 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 f8 02 00 00 48 83 3d d9 04 c6 06 00 0f 84 49 02 00 00 48 8b bd 68 ff ff ff 57 9d <0f> 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 48 c7 04 03 00 00 00 RSP: 0018:ffff8880aea07c68 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 1ffff11015d40f91 RCX: 1ffff1100fed298e RDX: 1ffffffff10240e9 RSI: 0000000000000001 RDI: 0000000000000282 RBP: ffff8880aea07d10 R08: 0000000000000000 R09: ffffed1015d44732 R10: ffffed1015d44732 R11: ffff8880aea23993 R12: ffff88807f694400 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88807f694400 call_timer_fn+0x189/0x510 kernel/time/timer.c:1329 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] run_timer_softirq+0xb63/0x1180 kernel/time/timer.c:1697 __do_softirq+0x260/0x92d kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:544 [inline] smp_apic_timer_interrupt+0x13e/0x540 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:get_futex_key_refs.isra.12+0x65/0x90 kernel/futex.c:455 Code: 03 83 f8 01 74 2b 83 f8 02 75 19 48 8d 7b 5c be 04 00 00 00 e8 4c 84 39 00 f0 ff 43 5c 48 83 c4 08 5b 5d c3 f0 83 44 24 fc 00 <48> 83 c4 08 5b 5d c3 48 89 df e8 4c 42 47 00 48 83 c4 08 5b 5d c3 RSP: 0018:ffff888061b1f920 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: ffff88808ca2a7c0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff888061b1fb08 RDI: ffff88808ca2a7c0 RBP: ffff888061b1f930 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 00000000004c6855 R12: 000000000075bf2c R13: ffff88807f694400 R14: 0000000000000000 R15: ffffffffffffffda get_futex_key+0xb84/0x1030 kernel/futex.c:535 futex_wake+0xcb/0x590 kernel/futex.c:1589 do_futex+0x59a/0x1840 kernel/futex.c:3697 __do_sys_futex kernel/futex.c:3753 [inline] __se_sys_futex kernel/futex.c:3721 [inline] __x64_sys_futex+0x1cb/0x3a0 kernel/futex.c:3721 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459a09 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f8d67dc6cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 000000000075bf28 RCX: 0000000000459a09 RDX: 00000000004c6855 RSI: 0000000000000081 RDI: 000000000075bf2c RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000006 R11: 0000000000000246 R12: 000000000075bf2c R13: 00007fff212f348f R14: 00007f8d67dc79c0 R15: 000000000075bf2c selinux_nlmsg_perm: 114 callbacks suppressed SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=20940 comm=syz-executor.1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=20944 comm=syz-executor.1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=20947 comm=syz-executor.1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=20950 comm=syz-executor.1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=20953 comm=syz-executor.1