watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [kworker/u8:7:2239] Modules linked in: irq event stamp: 1460671 hardirqs last enabled at (1460670): [] irqentry_exit+0xd8/0x108 kernel/entry/common.c:214 hardirqs last disabled at (1460671): [] __enter_from_kernel_mode arch/arm64/kernel/entry-common.c:43 [inline] hardirqs last disabled at (1460671): [] enter_from_kernel_mode+0x14/0x34 arch/arm64/kernel/entry-common.c:50 softirqs last enabled at (1453098): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (1453098): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (1453119): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 CPU: 1 UID: 0 PID: 2239 Comm: kworker/u8:7 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 Workqueue: ocfs2_wq ocfs2_complete_recovery pstate: 03400005 (nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : preempt_count arch/arm64/include/asm/preempt.h:12 [inline] pc : in_softirq_really kernel/kcov.c:171 [inline] pc : check_kcov_mode kernel/kcov.c:183 [inline] pc : write_comp_data kernel/kcov.c:246 [inline] pc : __sanitizer_cov_trace_cmp4+0x2c/0xa0 kernel/kcov.c:288 lr : taprio_next_tc_txq net/sched/sch_taprio.c:768 [inline] lr : taprio_dequeue_tc_priority+0x1c4/0x620 net/sched/sch_taprio.c:795 sp : ffff800097c27170 x29: ffff800097c271e0 x28: ffff0000c84fb394 x27: 000000000000000c x26: 0000000000000000 x25: 000000000000000b x24: ffff0000c992c4c0 x23: 0000000000000008 x22: 0000000000000002 x21: 1fffe0001909f672 x20: 000000000000000c x19: dfff800000000000 x18: 00000000ffffffff x17: ffff800093605000 x16: ffff80008052b264 x15: 0000000000000001 x14: 1fffe0001909f627 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000030498ce0 x10: 0000000000ff0100 x9 : 0000000000000302 x8 : ffff0000ccab9e80 x7 : ffff800089662dfc x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 00000000ffffffff x2 : 0000000000000000 x1 : 000000000000000c x0 : 000000000000000c Call trace: in_softirq_really kernel/kcov.c:171 [inline] (P) check_kcov_mode kernel/kcov.c:183 [inline] (P) write_comp_data kernel/kcov.c:246 [inline] (P) __sanitizer_cov_trace_cmp4+0x2c/0xa0 kernel/kcov.c:288 (P) taprio_dequeue+0x174/0x4f8 net/sched/sch_taprio.c:-1 try_bulk_dequeue_skb_slow net/sched/sch_generic.c:213 [inline] dequeue_skb net/sched/sch_generic.c:300 [inline] qdisc_restart net/sched/sch_generic.c:399 [inline] __qdisc_run+0x224/0x1300 net/sched/sch_generic.c:417 __dev_xmit_skb net/core/dev.c:4183 [inline] __dev_queue_xmit+0xde0/0x32a8 net/core/dev.c:4691 dev_queue_xmit include/linux/netdevice.h:3361 [inline] neigh_resolve_output+0x550/0x654 net/core/neighbour.c:1595 neigh_output include/net/neighbour.h:547 [inline] ip6_finish_output2+0x1544/0x1c7c net/ipv6/ip6_output.c:141 __ip6_finish_output net/ipv6/ip6_output.c:-1 [inline] ip6_finish_output+0x418/0x7b4 net/ipv6/ip6_output.c:226 NF_HOOK_COND include/linux/netfilter.h:307 [inline] ip6_output+0x1e0/0x464 net/ipv6/ip6_output.c:248 dst_output include/net/dst.h:461 [inline] NF_HOOK include/linux/netfilter.h:318 [inline] ndisc_send_skb+0xb24/0x14ec net/ipv6/ndisc.c:512 ndisc_send_rs+0x378/0x514 net/ipv6/ndisc.c:722 addrconf_rs_timer+0x2f4/0x580 net/ipv6/addrconf.c:4037 call_timer_fn+0x1b4/0x818 kernel/time/timer.c:1747 expire_timers kernel/time/timer.c:1798 [inline] __run_timers kernel/time/timer.c:2372 [inline] __run_timer_base+0x51c/0x76c kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline] run_timer_softirq+0xcc/0x194 kernel/time/timer.c:2403 handle_softirqs+0x328/0xc88 kernel/softirq.c:579 __do_softirq+0x14/0x20 kernel/softirq.c:613 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:68 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:891 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:73 invoke_softirq kernel/softirq.c:460 [inline] __irq_exit_rcu+0x1b0/0x478 kernel/softirq.c:680 irq_exit_rcu+0x14/0x84 kernel/softirq.c:696 __el1_irq arch/arm64/kernel/entry-common.c:520 [inline] el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:532 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:537 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:592 __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P) arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] (P) __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] (P) _raw_spin_unlock_irq+0x34/0x80 kernel/locking/spinlock.c:202 (P) spin_unlock_irq include/linux/spinlock.h:401 [inline] loop_queue_work drivers/block/loop.c:863 [inline] loop_queue_rq+0x94c/0xaa8 drivers/block/loop.c:1887 __blk_mq_issue_directly block/blk-mq.c:2695 [inline] blk_mq_request_issue_directly+0x2c0/0x560 block/blk-mq.c:2782 blk_mq_issue_direct+0x254/0x558 block/blk-mq.c:2803 blk_mq_dispatch_queue_requests+0x568/0x674 block/blk-mq.c:2878 blk_mq_flush_plug_list+0x370/0x488 block/blk-mq.c:2961 __blk_flush_plug+0x330/0x408 block/blk-core.c:1220 blk_finish_plug block/blk-core.c:1247 [inline] __submit_bio+0x3f4/0x4d8 block/blk-core.c:649 __submit_bio_noacct_mq block/blk-core.c:722 [inline] submit_bio_noacct_nocheck+0x390/0xaac block/blk-core.c:751 submit_bio_noacct+0xc94/0x177c block/blk-core.c:874 submit_bio+0x3b4/0x550 block/blk-core.c:916 submit_bh_wbc+0x3ec/0x4bc fs/buffer.c:2824 submit_bh+0x30/0x40 fs/buffer.c:2829 ocfs2_read_blocks+0xb54/0x14f4 fs/ocfs2/buffer_head_io.c:330 ocfs2_read_inode_block_full fs/ocfs2/inode.c:1682 [inline] ocfs2_read_inode_block+0xd4/0x178 fs/ocfs2/inode.c:1694 ocfs2_dir_foreach_blk_id fs/ocfs2/dir.c:1770 [inline] ocfs2_dir_foreach_blk+0xc6c/0x14bc fs/ocfs2/dir.c:1933 ocfs2_dir_foreach+0x4c/0x7c fs/ocfs2/dir.c:1944 ocfs2_queue_orphans fs/ocfs2/journal.c:2222 [inline] ocfs2_recover_orphans fs/ocfs2/journal.c:2306 [inline] ocfs2_complete_recovery+0xb08/0x1ecc fs/ocfs2/journal.c:1373 process_one_work+0x7e8/0x155c kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 83400005 (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+0xd0/0xfc kernel/sched/idle.c:129 sp : ffff80008f7d7d20 x29: ffff80008f7d7d20 x28: 0000000000000001 x27: dfff800000000000 x26: 1ffff00011efafac x25: 0000000000000000 x24: 0000000000000000 x23: 1ffff00011f10c30 x22: ffff80008f85e768 x21: 1ffff00011f0bced x20: 0000000000000000 x19: ffff8000804cc330 x18: 1fffe00033771c88 x17: ffff80008f85e000 x16: ffff8000804cbc54 x15: 0000000000000001 x14: 1fffe00033773938 x13: 0000000000000000 x12: 0000000000000000 x11: ffff600033773939 x10: 0000000000000003 x9 : 0000000000000000 x8 : 0000000000074531 x7 : ffff80008066407c x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008b065634 x2 : 0000000000000000 x1 : ffff80008ee54d8e x0 : ffff80010c3e8000 Call trace: __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P) arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:48 (P) cpuidle_idle_call kernel/sched/idle.c:190 [inline] do_idle+0x1d8/0x454 kernel/sched/idle.c:330 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:428 rest_init+0x2d8/0x2f4 init/main.c:744 start_kernel+0x390/0x3e0 init/main.c:1097 __primary_switched+0x8c/0x94 arch/arm64/kernel/head.S:246