netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. device vlan508 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): veth1179: link is not ready device veth1179 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): vlan508: link is not ready rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (10499 ticks this GP) idle=dda/1/0x4000000000000004 softirq=76480/76480 fqs=5103 rcu: (t=10500 jiffies g=100349 q=1232) NMI backtrace for cpu 1 CPU: 1 PID: 12140 Comm: syz-executor.1 Not tainted 4.19.107-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+0x188/0x20d lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1eb lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_dump_cpu_stacks+0x170/0x1bb 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+0x634/0xddc kernel/rcu/tree.c:2682 update_process_times+0x2a/0x70 kernel/time/timer.c:1638 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:168 tick_sched_timer+0x42/0x130 kernel/time/tick-sched.c:1278 __run_hrtimer kernel/time/hrtimer.c:1401 [inline] __hrtimer_run_queues+0x2fc/0xd50 kernel/time/hrtimer.c:1463 hrtimer_interrupt+0x312/0x770 kernel/time/hrtimer.c:1521 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1067 [inline] smp_apic_timer_interrupt+0x10c/0x550 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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x91/0xe0 kernel/locking/spinlock.c:184 Code: 48 c7 c0 88 56 b2 88 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 37 48 83 3d fe 5d 92 01 00 74 22 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 c0 a1 26 fa 65 8b 05 29 f5 e1 78 RSP: 0018:ffff8880ae707c50 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff1164ad1 RBX: 0000000000000282 RCX: 1ffff110077f8941 RDX: dffffc0000000000 RSI: ffff88803bfc49e8 RDI: 0000000000000282 RBP: ffff8880ae723a00 R08: ffff88803bfc4140 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 1ffff11015ce0f95 R14: 0000000000000000 R15: ffff8880ae723a00 __mod_timer kernel/time/timer.c:1059 [inline] mod_timer+0x530/0xfb0 kernel/time/timer.c:1102 call_timer_fn+0x177/0x700 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x5d0/0x1540 kernel/time/timer.c:1697 __do_softirq+0x26c/0x93c kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x17b/0x1c0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:544 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x50 kernel/kcov.c:100 Code: 2c 6e 87 4c 89 25 5c 23 06 0a 41 bc f4 ff ff ff e8 4a 1c eb ff 48 c7 05 46 23 06 0a 00 00 00 00 e9 24 ec ff ff 90 48 8b 34 24 <65> 48 8b 04 25 40 ee 01 00 65 8b 15 fc 54 9a 7e 81 e2 00 01 1f 00 RSP: 0018:ffff88807a35fa78 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000002 RBX: ffff88803bfc4140 RCX: ffffffff83264683 RDX: 0000000000000001 RSI: ffffffff83264690 RDI: 0000000000000005 RBP: 0000000000000002 R08: ffff88803bfc4140 R09: ffffed1015ce4733 R10: ffffed1015ce4732 R11: ffff8880ae723993 R12: 0000000000000004 R13: 0000000000000074 R14: 0000000000000001 R15: ffff88809ffe6940 task_css include/linux/cgroup.h:482 [inline] task_devcgroup security/device_cgroup.c:53 [inline] __devcgroup_check_permission+0xd0/0x3b8 security/device_cgroup.c:811 devcgroup_check_permission include/linux/device_cgroup.h:32 [inline] devcgroup_inode_permission include/linux/device_cgroup.h:54 [inline] inode_permission+0x45b/0x550 fs/namei.c:455 may_open.isra.0+0x1a5/0x310 fs/namei.c:2974 do_last fs/namei.c:3417 [inline] path_openat+0xfb0/0x4200 fs/namei.c:3537 do_filp_open+0x1a1/0x280 fs/namei.c:3567 do_sys_open+0x3c0/0x500 fs/open.c:1088 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x416211 Code: 75 14 b8 02 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 19 00 00 c3 48 83 ec 08 e8 0a fa ff ff 48 89 04 24 b8 02 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fa ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007f372659e7a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000416211 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007f372659e850 RBP: 000000000076bf20 R08: 000000000000000f R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000293 R12: 00000000ffffffff R13: 0000000000000c09 R14: 00000000004cdf35 R15: 000000000076bf2c rcu: INFO: rcu_sched detected stalls on CPUs/tasks: rcu: 1-....: (0 ticks this GP) idle=dda/1/0x4000000000000000 softirq=76481/76481 fqs=5079 rcu: (detected by 0, t=10504 jiffies, g=16769, q=3)