watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [kworker/0:4:6076]
Modules linked in:
irq event stamp: 211463
hardirqs last  enabled at (211462): [<ffff800012431fb8>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline]
hardirqs last  enabled at (211462): [<ffff800012431fb8>] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:94
hardirqs last disabled at (211463): [<ffff80001242fdb0>] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline]
hardirqs last disabled at (211463): [<ffff80001242fdb0>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:486
softirqs last  enabled at (205448): [<ffff80000db58ddc>] spin_unlock_bh include/linux/spinlock.h:395 [inline]
softirqs last  enabled at (205448): [<ffff80000db58ddc>] nsim_dev_trap_report drivers/net/netdevsim/dev.c:823 [inline]
softirqs last  enabled at (205448): [<ffff80000db58ddc>] nsim_dev_trap_report_work+0x620/0x924 drivers/net/netdevsim/dev.c:853
softirqs last disabled at (205449): [<ffff80000802a660>] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
CPU: 0 PID: 6076 Comm: kworker/0:4 Not tainted 6.4.0-rc3-syzkaller-geb0f1697d729 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Workqueue: events nsim_dev_trap_report_work
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __list_del_entry_valid+0xac/0x158 lib/list_debug.c:62
lr : __list_del_entry include/linux/list.h:134 [inline]
lr : list_move_tail include/linux/list.h:229 [inline]
lr : fq_pie_qdisc_dequeue+0x288/0x8ac net/sched/sch_fq_pie.c:248
sp : ffff8000080071e0
x29: ffff8000080071e0 x28: ffff00014af51310 x27: ffff000142b6aae8
x26: ffff000142b6aaf0 x25: dfff800000000000 x24: ffff000142b6aae0
x23: ffff00014af51300 x22: dfff800000000000 x21: ffff000142b6aae8
x20: ffff000142b6aae0 x19: ffff00014af51310 x18: ffff800008006e60
x17: 0000000000000000 x16: ffff80000850b36c x15: 0000000000000303
x14: 0000000000000100 x13: 0000000000000000 x12: 0000000000000001
x11: 0000000000000303 x10: 0000000000000100 x9 : ffff000142b6ab28
x8 : 0000000000000000 x7 : ffff80000841c468 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000
x2 : ffff00014af51310 x1 : 0000000000000000 x0 : ffff00014af51318
Call trace:
 __list_del_entry_valid+0xac/0x158 lib/list_debug.c:62
 __list_del_entry include/linux/list.h:134 [inline]
 list_move_tail include/linux/list.h:229 [inline]
 fq_pie_qdisc_dequeue+0x288/0x8ac net/sched/sch_fq_pie.c:248
 dequeue_skb net/sched/sch_generic.c:292 [inline]
 qdisc_restart net/sched/sch_generic.c:397 [inline]
 __qdisc_run+0x1fc/0x231c net/sched/sch_generic.c:415
 __dev_xmit_skb net/core/dev.c:3868 [inline]
 __dev_queue_xmit+0xc80/0x3318 net/core/dev.c:4210
 dev_queue_xmit include/linux/netdevice.h:3085 [inline]
 neigh_connected_output+0x2f8/0x38c net/core/neighbour.c:1581
 neigh_output include/net/neighbour.h:544 [inline]
 ip6_finish_output2+0xd60/0x1a1c net/ipv6/ip6_output.c:134
 __ip6_finish_output net/ipv6/ip6_output.c:195 [inline]
 ip6_finish_output+0x538/0x8c8 net/ipv6/ip6_output.c:206
 NF_HOOK_COND include/linux/netfilter.h:292 [inline]
 ip6_output+0x270/0x594 net/ipv6/ip6_output.c:227
 dst_output include/net/dst.h:458 [inline]
 NF_HOOK include/linux/netfilter.h:303 [inline]
 ndisc_send_skb+0xc30/0x1790 net/ipv6/ndisc.c:508
 ndisc_send_rs+0x47c/0x5d4 net/ipv6/ndisc.c:718
 addrconf_rs_timer+0x300/0x58c net/ipv6/addrconf.c:3936
 call_timer_fn+0x19c/0x8cc kernel/time/timer.c:1700
 expire_timers kernel/time/timer.c:1751 [inline]
 __run_timers+0x55c/0x734 kernel/time/timer.c:2022
 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:2035
 __do_softirq+0x2d0/0xd54 kernel/softirq.c:571
 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:882
 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85
 do_softirq+0x11c/0x1d8 kernel/softirq.c:472
 __local_bh_enable_ip+0x2b0/0x4ac kernel/softirq.c:396
 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline]
 _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:210
 spin_unlock_bh include/linux/spinlock.h:395 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:823 [inline]
 nsim_dev_trap_report_work+0x620/0x924 drivers/net/netdevsim/dev.c:853
 process_one_work+0x788/0x12d4 kernel/workqueue.c:2405
 worker_thread+0x8e0/0xfe8 kernel/workqueue.c:2552
 kthread+0x288/0x310 kernel/kthread.c:379
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:853