netlink: 4 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor6'. rcu: INFO: rcu_sched self-detected stall on CPU rcu: 1-...!: (1 ticks this GP) idle=5a6/1/0x4000000000000002 softirq=108375/108375 fqs=0 rcu: (t=111958 jiffies g=238173 q=120) NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.18.0+ #192 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+0x1c9/0x2b4 lib/dump_stack.c:113 nmi_cpu_backtrace.cold.3+0x48/0x88 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x151/0x192 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:162 [inline] rcu_dump_cpu_stacks+0x175/0x1c2 kernel/rcu/tree.c:1340 print_cpu_stall.cold.78+0x2fb/0x59c kernel/rcu/tree.c:1478 check_cpu_stall kernel/rcu/tree.c:1550 [inline] __rcu_pending kernel/rcu/tree.c:3276 [inline] rcu_pending kernel/rcu/tree.c:3319 [inline] rcu_check_callbacks+0xd93/0x1660 kernel/rcu/tree.c:2665 update_process_times+0x2d/0x70 kernel/time/timer.c:1636 tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164 tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274 __run_hrtimer kernel/time/hrtimer.c:1398 [inline] __hrtimer_run_queues+0x3eb/0x10c0 kernel/time/hrtimer.c:1460 hrtimer_interrupt+0x2f3/0x750 kernel/time/hrtimer.c:1518 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1029 [inline] smp_apic_timer_interrupt+0x16d/0x730 arch/x86/kernel/apic/apic.c:1054 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 RIP: 0010:arch_local_irq_enable arch/x86/include/asm/paravirt.h:793 [inline] RIP: 0010:tick_nohz_idle_exit+0x190/0x290 kernel/time/tick-sched.c:1158 Code: 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 0c 01 00 00 48 83 3d 3a 87 82 06 00 0f 84 a7 00 00 00 e8 c7 9d 0d 00 fb 66 0f 1f 44 00 00 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 e8 b0 9d 0d 00 e8 2b 97 fc ff 31 RSP: 0018:ffff8801d9eefd18 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff8801d9ede380 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff816f3349 RDI: ffffffff87f1ba78 RBP: ffff8801d9eefd40 R08: ffff8801d9ede380 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801db126560 R13: ffff8801db1265ac R14: 0000000000000001 R15: 00000068a2385b38 do_idle+0x167/0x570 kernel/sched/idle.c:275 cpu_startup_entry+0x10c/0x120 kernel/sched/idle.c:368 start_secondary+0x433/0x5d0 arch/x86/kernel/smpboot.c:271 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:242