watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [ksoftirqd/1:21] Modules linked in: irq event stamp: 2919001 hardirqs last enabled at (2919000): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline] hardirqs last enabled at (2919000): [] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:94 hardirqs last disabled at (2919001): [] __el1_irq arch/arm64/kernel/entry-common.c:470 [inline] hardirqs last disabled at (2919001): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:488 softirqs last enabled at (2914468): [] softirq_handle_end kernel/softirq.c:414 [inline] softirqs last enabled at (2914468): [] __do_softirq+0xac0/0xd54 kernel/softirq.c:600 softirqs last disabled at (2914473): [] run_ksoftirqd+0x6c/0x158 kernel/softirq.c:939 CPU: 1 PID: 21 Comm: ksoftirqd/1 Not tainted 6.4.0-rc4-syzkaller-g7579d8f9bf90 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 pstate: 20400005 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : fq_pie_qdisc_dequeue+0xf0/0x8ac net/sched/sch_fq_pie.c:244 lr : fq_pie_qdisc_dequeue+0xe4/0x8ac net/sched/sch_fq_pie.c:240 sp : ffff8000928a6fb0 x29: ffff8000928a7020 x28: ffff0000f0c71380 x27: ffff0000d0874ae8 x26: ffff0000d0874af0 x25: dfff800000000000 x24: ffff0000d0874ae0 x23: ffff0000f0c71370 x22: 0000000000000040 x21: ffff0000d0874ae0 x20: ffff0000d0874ae0 x19: ffff0000d0874ae0 x18: ffff0001b425ff98 x17: 0000000000000000 x16: ffff80008050a9f0 x15: 0000000000000301 x14: 0000000000000100 x13: 0000000000000000 x12: 0000000000000001 x11: 0000000000000301 x10: 0000000000000100 x9 : 0000000000000000 x8 : 0000000000000000 x7 : ffff80008041beec x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff0000d0874ae0 x1 : ffff0000d0874ae0 x0 : 0000000000000001 Call trace: fq_pie_qdisc_dequeue+0xf0/0x8ac net/sched/sch_fq_pie.c:244 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 run_ksoftirqd+0x6c/0x158 kernel/softirq.c:939 smpboot_thread_fn+0x4b0/0x920 kernel/smpboot.c:164 kthread+0x288/0x310 kernel/kthread.c:379 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:853