watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [kworker/u8:7:4200] Modules linked in: irq event stamp: 2225211 hardirqs last enabled at (2225210): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:85 [inline] hardirqs last enabled at (2225210): [] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:95 hardirqs last disabled at (2225211): [] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline] hardirqs last disabled at (2225211): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:551 softirqs last enabled at (2220868): [] neigh_hh_init net/core/neighbour.c:1540 [inline] softirqs last enabled at (2220868): [] neigh_resolve_output+0x268/0x658 net/core/neighbour.c:1555 softirqs last disabled at (2220872): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 CPU: 1 PID: 4200 Comm: kworker/u8:7 Tainted: G W 6.10.0-rc3-syzkaller-00018-gac2193b4b460 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Workqueue: ipv6_addrconf addrconf_dad_work pstate: 20400005 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __list_del_entry_valid_or_report+0x88/0x158 lib/list_debug.c:62 lr : __list_del_entry_valid include/linux/list.h:124 [inline] lr : __list_del_entry include/linux/list.h:215 [inline] lr : list_move_tail include/linux/list.h:310 [inline] lr : fq_tin_dequeue include/net/fq_impl.h:112 [inline] lr : ieee80211_tx_dequeue+0x674/0x3b4c net/mac80211/tx.c:3854 sp : ffff80009edf6650 x29: ffff80009edf6650 x28: ffff80009edf68e0 x27: dfff800000000000 x26: ffff0000e28aad88 x25: ffff0000e28aac18 x24: ffff0000e28aac28 x23: ffff0000e29ea868 x22: dfff800000000000 x21: ffff0000e28aac28 x20: ffff0000e28aac28 x19: ffff0000e29ea868 x18: 1fffe000367ae9de x17: 0000000000000000 x16: ffff800080559da4 x15: ffff700013dbecb8 x14: 1ffff00013dbecb8 x13: 0000000000000004 x12: ffffffffffffffff x11: ffff700013dbecb8 x10: ffff0000dbe50f70 x9 : 0000000000000000 x8 : 0000000000000000 x7 : ffff80008a930ac0 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800080350e64 x2 : dead000000000122 x1 : 00000000862445ac x0 : ffff0000e29ea870 Call trace: __list_del_entry_valid_or_report+0x88/0x158 lib/list_debug.c:62 __list_del_entry_valid include/linux/list.h:124 [inline] __list_del_entry include/linux/list.h:215 [inline] list_move_tail include/linux/list.h:310 [inline] fq_tin_dequeue include/net/fq_impl.h:112 [inline] ieee80211_tx_dequeue+0x674/0x3b4c net/mac80211/tx.c:3854 wake_tx_push_queue net/mac80211/util.c:294 [inline] ieee80211_handle_wake_tx_queue+0x118/0x274 net/mac80211/util.c:315 drv_wake_tx_queue net/mac80211/driver-ops.h:1350 [inline] schedule_and_wake_txq net/mac80211/driver-ops.h:1357 [inline] ieee80211_queue_skb+0x18e0/0x2230 net/mac80211/tx.c:1664 ieee80211_tx+0x260/0x400 net/mac80211/tx.c:1966 ieee80211_xmit+0x278/0x354 net/mac80211/tx.c:2062 __ieee80211_subif_start_xmit+0xab8/0x122c net/mac80211/tx.c:4338 ieee80211_subif_start_xmit+0xe0/0x438 net/mac80211/tx.c:4532 __netdev_start_xmit include/linux/netdevice.h:4882 [inline] netdev_start_xmit include/linux/netdevice.h:4896 [inline] xmit_one net/core/dev.c:3578 [inline] dev_hard_start_xmit+0x260/0x904 net/core/dev.c:3594 __dev_queue_xmit+0x1670/0x33f4 net/core/dev.c:4393 dev_queue_xmit include/linux/netdevice.h:3095 [inline] neigh_resolve_output+0x558/0x658 net/core/neighbour.c:1565 neigh_output include/net/neighbour.h:542 [inline] ip6_finish_output2+0x104c/0x1ee8 net/ipv6/ip6_output.c:137 ip6_finish_output+0x428/0x7a0 net/ipv6/ip6_output.c:222 NF_HOOK_COND include/linux/netfilter.h:303 [inline] ip6_output+0x274/0x594 net/ipv6/ip6_output.c:243 dst_output include/net/dst.h:450 [inline] NF_HOOK include/linux/netfilter.h:314 [inline] ndisc_send_skb+0xaa8/0x14f0 net/ipv6/ndisc.c:509 ndisc_send_ns+0xd4/0x164 net/ipv6/ndisc.c:667 addrconf_dad_work+0x988/0x1350 net/ipv6/addrconf.c:4281 process_one_work+0x79c/0x15b8 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:3393 kthread+0x288/0x310 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 6.10.0-rc3-syzkaller-00018-gac2193b4b460 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:50 lr : default_idle_call+0xf8/0x128 kernel/sched/idle.c:124 sp : ffff80008f117cf0 x29: ffff80008f117cf0 x28: dfff800000000000 x27: 1ffff00011e22fac x26: ffff80008f19d000 x25: 0000000000000000 x24: 0000000000000001 x23: 1ffff00011e33aad x22: ffff80008f19d568 x21: 0000000000000000 x20: ffff80008f1c4e40 x19: ffff8000802e6844 x18: 1fffe000367aa1de x17: ffff80008f19d000 x16: ffff8000802e6108 x15: 0000000000000001 x14: 1fffe000367abf41 x13: 0000000000000000 x12: 0000000000000003 x11: 0000000000000001 x10: 0000000000000003 x9 : 0000000000000000 x8 : 000000000008f609 x7 : ffff80008047e2d4 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008b06b4bc x2 : 0000000000000000 x1 : ffff80008b1e00a0 x0 : ffff800124c6a000 Call trace: __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:48 cpuidle_idle_call kernel/sched/idle.c:191 [inline] do_idle+0x1f0/0x4e4 kernel/sched/idle.c:332 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:430 rest_init+0x2dc/0x2f4 init/main.c:747 start_kernel+0x3f4/0x4f4 init/main.c:1103 __primary_switched+0x84/0x8c arch/arm64/kernel/head.S:243