watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [swapper/1:0] Modules linked in: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.1.43-syzkaller-00235-g35361bdac25a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline] RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline] RIP: 0010:kvm_wait+0x147/0x180 arch/x86/kernel/kvm.c:1066 Code: 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b 74 24 1c 75 34 41 0f b6 45 00 44 38 f0 75 10 66 90 0f 00 2d ab 18 11 04 fb f4 24 ff ff ff fb e9 1e ff ff ff 44 89 e9 80 e1 07 38 c1 7c a3 4c RSP: 0018:ffffc900001aff60 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 1ffff92000035ff0 RCX: 1ffffffff0d9bc9d RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff8881f7137fd4 RBP: ffffc900001b0010 R08: dffffc0000000000 R09: ffffed103ee26ffb R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff8881f7137fd4 R14: 0000000000000001 R15: 1ffff92000035ff4 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3272c000 CR3: 0000000111a98000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:603 [inline] pv_wait_node kernel/locking/qspinlock_paravirt.h:325 [inline] __pv_queued_spin_lock_slowpath+0x362/0xda0 kernel/locking/qspinlock.c:476 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock include/linux/spinlock.h:186 [inline] __raw_spin_lock include/linux/spinlock_api_smp.h:134 [inline] _raw_spin_lock+0x139/0x1b0 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:350 [inline] __dev_xmit_skb net/core/dev.c:3861 [inline] __dev_queue_xmit+0xd76/0x3700 net/core/dev.c:4234 dev_queue_xmit include/linux/netdevice.h:3076 [inline] neigh_resolve_output+0x6c0/0x7c0 net/core/neighbour.c:1552 neigh_output include/net/neighbour.h:552 [inline] ip6_finish_output2+0x104a/0x1820 net/ipv6/ip6_output.c:134 __ip6_finish_output net/ipv6/ip6_output.c:195 [inline] ip6_finish_output+0x5d9/0xb60 net/ipv6/ip6_output.c:206 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip6_output+0x1f7/0x4d0 net/ipv6/ip6_output.c:227 dst_output include/net/dst.h:444 [inline] ip6_local_out+0x1ff/0x480 net/ipv6/output_core.c:161 ip6_send_skb net/ipv6/ip6_output.c:1989 [inline] ip6_push_pending_frames+0x14a/0x290 net/ipv6/ip6_output.c:2009 icmpv6_push_pending_frames+0x307/0x490 net/ipv6/icmp.c:303 icmp6_send+0x1461/0x1e50 net/ipv6/icmp.c:622 __icmpv6_send include/linux/icmpv6.h:28 [inline] icmpv6_send include/linux/icmpv6.h:49 [inline] ip6_link_failure+0x36/0x190 net/ipv6/route.c:2786 dst_link_failure include/net/dst.h:423 [inline] ndisc_error_report+0x9a/0xd0 net/ipv6/ndisc.c:728 neigh_invalidate+0x243/0x480 net/core/neighbour.c:1048 neigh_timer_handler+0x778/0xe70 net/core/neighbour.c:1135 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1480 expire_timers kernel/time/timer.c:1525 [inline] __run_timers+0x72a/0xa10 kernel/time/timer.c:1796 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1809 __do_softirq+0x1d8/0x661 kernel/softirq.c:613 invoke_softirq kernel/softirq.c:468 [inline] __irq_exit_rcu+0x50/0xf0 kernel/softirq.c:696 irq_exit_rcu+0x9/0x10 kernel/softirq.c:708 sysvec_apic_timer_interrupt+0x9a/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:40 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:75 [inline] RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:113 [inline] RIP: 0010:acpi_idle_do_entry drivers/acpi/processor_idle.c:572 [inline] RIP: 0010:acpi_idle_enter+0x416/0x760 drivers/acpi/processor_idle.c:709 Code: 89 de 48 83 e6 08 31 ff e8 37 69 79 fc 48 83 e3 08 0f 85 b1 00 00 00 0f 1f 44 00 00 e8 e3 64 79 fc 0f 00 2d 6c 28 b4 00 fb f4 e9 e3 00 00 00 49 83 c7 04 4c 89 f8 48 c1 e8 03 42 0f b6 04 30 RSP: 0018:ffffc90000147c50 EFLAGS: 000002d3 RAX: ffffffff84fb968d RBX: 0000000000000000 RCX: ffff888100390000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000147c90 R08: ffffffff84fb9679 R09: ffffed1020072001 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: ffff888100070804 R14: dffffc0000000000 R15: ffff888109867864 cpuidle_enter_state+0x5eb/0x17f0 drivers/cpuidle/cpuidle.c:251 cpuidle_enter+0x5f/0xa0 drivers/cpuidle/cpuidle.c:369 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:236 [inline] do_idle+0x3d1/0x580 kernel/sched/idle.c:303 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:400 start_secondary+0xe3/0xf0 arch/x86/kernel/smpboot.c:281 secondary_startup_64_no_verify+0xce/0xdb Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 15621 Comm: syz-executor.2 Not tainted 6.1.43-syzkaller-00235-g35361bdac25a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline] RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline] RIP: 0010:kvm_wait+0x147/0x180 arch/x86/kernel/kvm.c:1066 Code: 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b 74 24 1c 75 34 41 0f b6 45 00 44 38 f0 75 10 66 90 0f 00 2d ab 18 11 04 fb f4 24 ff ff ff fb e9 1e ff ff ff 44 89 e9 80 e1 07 38 c1 7c a3 4c RSP: 0018:ffffc9000c01ebe0 EFLAGS: 00000246 RAX: 0000000000000003 RBX: 1ffff92001803d80 RCX: ffffffff84fbdbec RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffffffff873a54ac RBP: ffffc9000c01ec90 R08: dffffc0000000000 R09: fffffbfff0e74a96 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffffffff873a54ac R14: 0000000000000003 R15: 1ffff92001803d84 FS: 00007f7d056806c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33322000 CR3: 0000000155084000 CR4: 00000000003506b0 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:603 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x6de/0xda0 kernel/locking/qspinlock.c:511 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock include/linux/spinlock.h:186 [inline] __raw_spin_lock_bh include/linux/spinlock_api_smp.h:127 [inline] _raw_spin_lock_bh+0x139/0x1b0 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:355 [inline] get_dist_table+0x215/0x2e0 net/sched/sch_netem.c:798 netem_change+0x9ec/0x20b0 net/sched/sch_netem.c:985 netem_init+0x5b/0xb0 net/sched/sch_netem.c:1072 qdisc_create+0x889/0x1160 net/sched/sch_api.c:1314 tc_modify_qdisc+0x8d0/0x19c0 rtnetlink_rcv_msg+0x9a5/0xca0 net/core/rtnetlink.c:6103 netlink_rcv_skb+0x1cd/0x410 net/netlink/af_netlink.c:2525 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:6121 netlink_unicast_kernel net/netlink/af_netlink.c:1328 [inline] netlink_unicast+0x8ee/0xad0 net/netlink/af_netlink.c:1354 netlink_sendmsg+0xa15/0xd30 net/netlink/af_netlink.c:1903 sock_sendmsg_nosec net/socket.c:716 [inline] sock_sendmsg net/socket.c:736 [inline] ____sys_sendmsg+0x5dc/0x9d0 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x2a9/0x390 net/socket.c:2565 __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x7f/0x90 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f7d0487cae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f7d056800c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f7d0499bf80 RCX: 00007f7d0487cae9 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000004 RBP: 00007f7d048c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f7d0499bf80 R15: 00007ffca026a1f8