watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [kworker/0:1:13] Modules linked in: irq event stamp: 82891 hardirqs last enabled at (82890): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:81 [inline] hardirqs last enabled at (82890): [] exit_to_kernel_mode+0x100/0x178 arch/arm64/kernel/entry-common.c:91 hardirqs last disabled at (82891): [] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227 softirqs last enabled at (77742): [] wg_socket_send_skb_to_peer+0x158/0x1a8 drivers/net/wireguard/socket.c:184 softirqs last disabled at (77743): [] __do_softirq kernel/softirq.c:592 [inline] softirqs last disabled at (77743): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (77743): [] do_softirq+0xfc/0x1b0 kernel/softirq.c:459 CPU: 0 PID: 13 Comm: kworker/0:1 Not tainted 5.15.172-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 Workqueue: wg-crypt-wg0 wg_packet_tx_worker pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : fq_flow_add_tail net/sched/sch_fq.c:165 [inline] pc : fq_dequeue+0x714/0x18fc net/sched/sch_fq.c:564 lr : fq_flow_add_tail net/sched/sch_fq.c:165 [inline] lr : fq_dequeue+0x700/0x18fc net/sched/sch_fq.c:564 sp : ffff80001bc76300 x29: ffff80001bc76420 x28: ffff0000d85062c0 x27: 0000000fbdde83d0 x26: dfff800000000000 x25: ffff0000cb4f6540 x24: ffff0000d85062e8 x23: 1fffe0001969ecb1 x22: ffff0000d85062d0 x21: ffff0000d85062d0 x20: ffff0000d85062d8 x19: ffff0000cb4f6588 x18: 0000000000000902 x17: 0000000000000000 x16: ffff8000082ec8b8 x15: 0000000000000001 x14: 1ffff0000295806a x13: dfff800000000000 x12: 0000000000000003 x11: 0000000000000902 x10: 0000000000000000 x9 : ffff0000c0950000 x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff80000804605c x2 : 0000000000000002 x1 : 00000000f90323ee x0 : 0000000000000001 Call trace: fq_flow_add_tail net/sched/sch_fq.c:165 [inline] fq_dequeue+0x714/0x18fc net/sched/sch_fq.c:564 dequeue_skb net/sched/sch_generic.c:292 [inline] qdisc_restart net/sched/sch_generic.c:397 [inline] __qdisc_run+0x1ec/0x1fc0 net/sched/sch_generic.c:415 __dev_xmit_skb net/core/dev.c:3910 [inline] __dev_queue_xmit+0x1038/0x2ac8 net/core/dev.c:4221 dev_queue_xmit+0x24/0x34 net/core/dev.c:4289 neigh_hh_output include/net/neighbour.h:493 [inline] neigh_output include/net/neighbour.h:507 [inline] ip_finish_output2+0xd3c/0x131c net/ipv4/ip_output.c:228 __ip_finish_output+0x1b0/0x458 ip_finish_output+0x40/0x218 net/ipv4/ip_output.c:316 NF_HOOK_COND include/linux/netfilter.h:291 [inline] ip_output+0x330/0x49c net/ipv4/ip_output.c:430 dst_output include/net/dst.h:443 [inline] ip_local_out+0x120/0x160 net/ipv4/ip_output.c:126 iptunnel_xmit+0x40c/0x8fc net/ipv4/ip_tunnel_core.c:82 udp_tunnel_xmit_skb+0x178/0x284 net/ipv4/udp_tunnel_core.c:175 geneve_xmit_skb drivers/net/geneve.c:1006 [inline] geneve_xmit+0x24cc/0x323c drivers/net/geneve.c:1119 __netdev_start_xmit include/linux/netdevice.h:5019 [inline] netdev_start_xmit include/linux/netdevice.h:5033 [inline] xmit_one net/core/dev.c:3617 [inline] dev_hard_start_xmit+0x2bc/0x92c net/core/dev.c:3633 __dev_queue_xmit+0x1378/0x2ac8 net/core/dev.c:4256 dev_queue_xmit+0x24/0x34 net/core/dev.c:4289 neigh_hh_output include/net/neighbour.h:493 [inline] neigh_output include/net/neighbour.h:507 [inline] ip6_finish_output2+0x132c/0x1cec net/ipv6/ip6_output.c:130 __ip6_finish_output+0x580/0x6ec net/ipv6/ip6_output.c:201 ip6_finish_output+0x40/0x218 net/ipv6/ip6_output.c:211 NF_HOOK_COND include/linux/netfilter.h:291 [inline] ip6_output+0x274/0x594 net/ipv6/ip6_output.c:234 dst_output include/net/dst.h:443 [inline] NF_HOOK include/linux/netfilter.h:302 [inline] ndisc_send_skb+0xbf8/0x1788 net/ipv6/ndisc.c:511 ndisc_send_rs+0x494/0x5fc net/ipv6/ndisc.c:705 addrconf_rs_timer+0x308/0x5a8 net/ipv6/addrconf.c:3959 call_timer_fn+0x19c/0x8f0 kernel/time/timer.c:1451 expire_timers kernel/time/timer.c:1496 [inline] __run_timers+0x554/0x718 kernel/time/timer.c:1767 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1780 handle_softirqs+0x384/0xdbc kernel/softirq.c:558 __do_softirq kernel/softirq.c:592 [inline] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] do_softirq+0xfc/0x1b0 kernel/softirq.c:459 __local_bh_enable_ip+0x298/0x470 kernel/softirq.c:383 __raw_read_unlock_bh include/linux/rwlock_api_smp.h:251 [inline] _raw_read_unlock_bh+0xf8/0x180 kernel/locking/spinlock.c:284 wg_socket_send_skb_to_peer+0x158/0x1a8 drivers/net/wireguard/socket.c:184 wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline] wg_packet_tx_worker+0x1a8/0x714 drivers/net/wireguard/send.c:276 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310 worker_thread+0x910/0x1034 kernel/workqueue.c:2457 kthread+0x37c/0x45c kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870