watchdog: BUG: soft lockup - CPU#0 stuck for 153s! [kworker/u4:16:7424] Modules linked in: irq event stamp: 1413863 hardirqs last enabled at (1413862): [] asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 hardirqs last disabled at (1413863): [] sysvec_apic_timer_interrupt+0xa/0xb0 arch/x86/kernel/apic/apic.c:1096 softirqs last enabled at (1301388): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last enabled at (1301388): [] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:636 softirqs last disabled at (1301395): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last disabled at (1301395): [] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:636 CPU: 0 PID: 7424 Comm: kworker/u4:16 Not tainted 5.15.115-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 Workqueue: netns cleanup_net RIP: 0010:trylock_clear_pending kernel/locking/qspinlock_paravirt.h:121 [inline] RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:435 [inline] RIP: 0010:__pv_queued_spin_lock_slowpath+0x5c4/0xc40 kernel/locking/qspinlock.c:508 Code: 44 24 10 0f b6 04 10 84 c0 0f 85 48 01 00 00 48 8b 44 24 08 c6 00 01 bb 00 80 ff ff eb 06 f3 90 ff c3 74 5e 41 0f b6 44 15 00 <84> c0 75 36 41 80 3f 00 75 ea 4c 89 ff be 02 00 00 00 e8 85 81 65 RSP: 0018:ffffc90000007920 EFLAGS: 00000282 RAX: 0000000000000000 RBX: 00000000ffffc6b6 RCX: ffffffff8162db08 RDX: dffffc0000000000 RSI: ffffffff8a8afc60 RDI: ffffffff8ad85f80 RBP: ffffc90000007a18 R08: dffffc0000000000 R09: fffffbfff1f79239 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b9a3a494 R13: 1ffff1100fc4091e R14: 1ffff11017340001 R15: ffff88807e2048f0 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff0c2e7f000 CR3: 0000000084aea000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline] queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock+0x269/0x370 kernel/locking/spinlock_debug.c:115 spin_lock include/linux/spinlock.h:363 [inline] fq_pie_timer+0x87/0x260 net/sched/sch_fq_pie.c:380 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:lock_acquire+0x252/0x4f0 kernel/locking/lockdep.c:5626 Code: 2b 00 74 08 4c 89 f7 e8 4c e4 66 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25 RSP: 0018:ffffc900046e78e0 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff920008dcf28 RCX: 1ffff920008dcec8 RDX: dffffc0000000000 RSI: ffffffff8a8b0f00 RDI: ffffffff8ad85f80 RBP: ffffc900046e7a40 R08: dffffc0000000000 R09: fffffbfff1f79221 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920008dcf24 R13: dffffc0000000000 R14: ffffc900046e7940 R15: 0000000000000246 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:269 rcu_read_lock include/linux/rcupdate.h:696 [inline] inet_twsk_purge+0x11e/0xa20 net/ipv4/inet_timewait_sock.c:268 ops_exit_list net/core/net_namespace.c:174 [inline] cleanup_net+0x763/0xb60 net/core/net_namespace.c:596 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2307 worker_thread+0xaca/0x1280 kernel/workqueue.c:2454 kthread+0x3f6/0x4f0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.15.115-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 RIP: 0010:list_empty include/linux/list.h:290 [inline] RIP: 0010:fq_pie_qdisc_dequeue+0xd5/0xa90 net/sched/sch_fq_pie.c:240 Code: 80 3c 18 00 74 08 4c 89 e7 e8 67 52 60 f9 49 8b 04 24 4c 39 e0 74 0a e8 b9 f7 16 f9 4d 89 e7 eb 24 48 8b 44 24 30 80 3c 18 00 <74> 08 4c 89 ff e8 41 52 60 f9 49 8b 07 4c 39 f8 0f 84 dd 08 00 00 RSP: 0018:ffffc90000dd03d0 EFLAGS: 00000246 RAX: 1ffff1100fc4095c RBX: dffffc0000000000 RCX: dffffc0000000000 RDX: 0000000000000502 RSI: ffff88807e204ae0 RDI: ffff88808cb19d50 RBP: ffff88807e204ae0 R08: ffffffff88690204 R09: ffffffff88518418 R10: 0000000000000002 R11: ffff88813fe68000 R12: ffff88807e204af0 R13: ffff88807e204800 R14: ffff88808cb19d50 R15: ffff88807e204ae0 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30a21000 CR3: 0000000084aea000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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: dd 5b f7 48 83 e3 08 0f 85 0a 01 00 00 4c 8d 74 24 20 e8 94 4a 62 f7 0f 1f 44 00 00 e8 aa d9 5b f7 0f 00 2d 93 39 be 00 fb f4 <4c> 89 f3 48 c1 eb 03 42 80 3c 3b 00 74 08 4c 89 f7 e8 ab 34 a5 f7 RSP: 0018:ffffc90000d67b00 EFLAGS: 000002d3 RAX: ffffffff8a241fa6 RBX: 0000000000000000 RCX: ffff88813fe68000 RDX: 0000000000000000 RSI: ffffffff8a8afc60 RDI: ffffffff8ad85f80 RBP: ffffc90000d67b90 R08: ffffffff81866a60 R09: ffffed1027fcd001 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920001acf60 R13: ffff888146030004 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