rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (1 GPs behind) idle=635/0/0x3 softirq=62667/62668 fqs=5125 (t=10500 jiffies g=79841 q=107) NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.15.114-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline] rcu_dump_cpu_stacks+0x223/0x390 kernel/rcu/tree_stall.h:343 print_cpu_stall kernel/rcu/tree_stall.h:627 [inline] check_cpu_stall kernel/rcu/tree_stall.h:711 [inline] rcu_pending kernel/rcu/tree.c:3888 [inline] rcu_sched_clock_irq+0xf26/0x1770 kernel/rcu/tree.c:2606 update_process_times+0x196/0x200 kernel/time/timer.c:1788 tick_sched_handle kernel/time/tick-sched.c:226 [inline] tick_sched_timer+0x22d/0x3c0 kernel/time/tick-sched.c:1430 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline] __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:__list_add include/linux/list.h:73 [inline] RIP: 0010:list_add_tail include/linux/list.h:100 [inline] RIP: 0010:list_move_tail include/linux/list.h:228 [inline] RIP: 0010:fq_pie_qdisc_dequeue+0x487/0xa90 net/sched/sch_fq_pie.c:248 Code: 08 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 93 50 60 f9 48 89 2b 48 89 e8 48 c1 e8 03 <48> bb 00 00 00 00 00 fc ff df 80 3c 18 00 74 08 48 89 ef e8 71 50 RSP: 0018:ffffc90000dd03d0 EFLAGS: 00000a06 RAX: 1ffff1100367fa5c RBX: ffff8880961b1858 RCX: dffffc0000000000 RDX: 0000000000000502 RSI: ffff88801b3fd2e0 RDI: ffff8880961b1850 RBP: ffff88801b3fd2e0 R08: ffffffff886900a4 R09: ffffffff885182b8 R10: 0000000000000002 R11: ffff88813fe68000 R12: ffff88801b3fd2f0 R13: ffff88801b3fd000 R14: ffff8880961b1850 R15: ffff88801b3fd2e0 dequeue_skb net/sched/sch_generic.c:292 [inline] qdisc_restart net/sched/sch_generic.c:397 [inline] __qdisc_run+0x253/0x1e90 net/sched/sch_generic.c:415 __dev_xmit_skb net/core/dev.c:3879 [inline] __dev_queue_xmit+0xf0a/0x3230 net/core/dev.c:4190 neigh_output include/net/neighbour.h:516 [inline] ip6_finish_output2+0xee4/0x14f0 net/ipv6/ip6_output.c:126 dst_output include/net/dst.h:449 [inline] NF_HOOK include/linux/netfilter.h:307 [inline] ndisc_send_skb+0xae0/0x13c0 net/ipv6/ndisc.c:508 addrconf_rs_timer+0x357/0x610 net/ipv6/addrconf.c:3932 call_timer_fn+0x16d/0x560 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1737 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1750 __do_softirq+0x3b3/0x93a kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:636 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:22 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline] RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:132 [inline] RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:110 [inline] RIP: 0010:acpi_idle_do_entry+0x10f/0x340 drivers/acpi/processor_idle.c:570 Code: ed 5b f7 48 83 e3 08 0f 85 0a 01 00 00 4c 8d 74 24 20 e8 94 5a 62 f7 0f 1f 44 00 00 e8 aa e9 5b f7 0f 00 2d 93 49 be 00 fb f4 <4c> 89 f3 48 c1 eb 03 42 80 3c 3b 00 74 08 4c 89 f7 e8 bb 44 a5 f7 RSP: 0018:ffffc90000d67b00 EFLAGS: 000002d3 RAX: ffffffff8a240fa6 RBX: 0000000000000000 RCX: ffff88813fe68000 RDX: 0000000000000000 RSI: ffffffff8a8afc60 RDI: ffffffff8ad85f80 RBP: ffffc90000d67b90 R08: ffffffff81866a60 R09: ffffed1027fcd001 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920001acf60 R13: ffff888016f67004 R14: ffffc90000d67b20 R15: dffffc0000000000 acpi_idle_enter+0x352/0x4f0 drivers/acpi/processor_idle.c:705 cpuidle_enter_state+0x521/0xef0 drivers/cpuidle/cpuidle.c:237 cpuidle_enter+0x59/0x90 drivers/cpuidle/cpuidle.c:351 call_cpuidle kernel/sched/idle.c:158 [inline] cpuidle_idle_call kernel/sched/idle.c:239 [inline] do_idle+0x3e4/0x670 kernel/sched/idle.c:306 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:403 start_secondary+0x371/0x500 arch/x86/kernel/smpboot.c:270 secondary_startup_64_no_verify+0xb1/0xbb