watchdog: BUG: soft lockup - CPU#1 stuck for 144s! [syz.3.66:6168] Modules linked in: irq event stamp: 13466915 hardirqs last enabled at (13466914): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:310 hardirqs last disabled at (13466915): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1050 softirqs last enabled at (13324364): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (13324364): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (13324364): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (13324367): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (13324367): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (13324367): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 1 UID: 0 PID: 6168 Comm: syz.3.66 Not tainted 6.15.0-syzkaller-ge41079f53e87 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:__ipv6_chk_addr_and_flags+0x39c/0x7e0 net/ipv6/addrconf.c:1989 Code: b3 38 01 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 b3 b0 0b f8 4d 8b 36 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 <74> 08 4c 89 f7 e8 9a b0 0b f8 49 8b 2e 48 85 ed 74 5b 48 89 e8 48 RSP: 0018:ffffc90000a07e10 EFLAGS: 00000246 RAX: 1ffff110061db200 RBX: ffff888059f6b400 RCX: 0000000000000100 RDX: ffff888025ca1e00 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 000000007f92a6b2 R08: 0000000000000000 R09: ffffffff8a181b87 R10: 0000000000000005 R11: 0000000000000100 R12: dffffc0000000000 R13: 0000000000000000 R14: ffff888030ed9000 R15: ffff8880594770e8 FS: 00007f286fb8d6c0(0000) GS:ffff888125d55000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000003274c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ipv6_chk_addr_and_flags net/ipv6/addrconf.c:2017 [inline] ipv6_chk_addr+0x3a/0x60 net/ipv6/addrconf.c:1958 icmp6_send+0x3b1/0x1940 net/ipv6/icmp.c:489 __icmpv6_send include/linux/icmpv6.h:28 [inline] icmpv6_send include/linux/icmpv6.h:49 [inline] ip6_link_failure+0x3b/0x4c0 net/ipv6/route.c:2843 dst_link_failure include/net/dst.h:429 [inline] vti6_xmit net/ipv6/ip6_vti.c:542 [inline] vti6_tnl_xmit+0x106c/0x1a60 net/ipv6/ip6_vti.c:580 __netdev_start_xmit include/linux/netdevice.h:5215 [inline] netdev_start_xmit include/linux/netdevice.h:5224 [inline] xmit_one net/core/dev.c:3830 [inline] dev_hard_start_xmit+0x2d7/0x830 net/core/dev.c:3846 __dev_queue_xmit+0x1adf/0x3a70 net/core/dev.c:4713 neigh_output include/net/neighbour.h:539 [inline] ip6_finish_output2+0x11fe/0x16a0 net/ipv6/ip6_output.c:141 __ip6_finish_output net/ipv6/ip6_output.c:-1 [inline] ip6_finish_output+0x234/0x7d0 net/ipv6/ip6_output.c:226 NF_HOOK include/linux/netfilter.h:317 [inline] ndisc_send_skb+0xb47/0x1400 net/ipv6/ndisc.c:513 addrconf_rs_timer+0x369/0x670 net/ipv6/addrconf.c:4041 call_timer_fn+0x17b/0x5f0 kernel/time/timer.c:1747 expire_timers kernel/time/timer.c:1798 [inline] __run_timers kernel/time/timer.c:2372 [inline] __run_timer_base+0x61a/0x860 kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline] run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403 handle_softirqs+0x286/0x870 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202 Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 aa 18 36 f6 48 89 df e8 02 b0 36 f6 e8 ed ba 5f f6 fb bf 01 00 00 00 32 aa 28 f6 65 8b 05 1b 83 34 07 85 c0 74 07 5b e9 81 4c 00 00 RSP: 0018:ffffc9000c2a7df0 EFLAGS: 00000286 RAX: 98eb742ea8136100 RBX: ffff888025ca2810 RCX: 98eb742ea8136100 RDX: 0000000000000000 RSI: ffffffff8d97cb93 RDI: 0000000000000001 RBP: ffffc9000c2a7ec0 R08: ffffffff8fa101f7 R09: 1ffffffff1f4203e R10: dffffc0000000000 R11: fffffbfff1f4203f R12: dffffc0000000000 R13: ffff888025ca3398 R14: ffff888025ca2810 R15: ffff888025ca2778 task_work_run+0x191/0x260 kernel/task_work.c:223 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:114 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline] do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f286ed8e929 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f286fb8d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffea RBX: 00007f286efb5fa0 RCX: 00007f286ed8e929 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000016 RBP: 00007f286ee10b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f286efb5fa0 R15: 00007ffd16a15658 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 1303 Comm: aoe_tx0 Not tainted 6.15.0-syzkaller-ge41079f53e87 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:put_dec_trunc8+0x1dd/0x340 lib/vsprintf.c:263 Code: 01 00 00 66 44 89 7b 04 48 83 c3 06 89 e8 4c 8d 34 45 a0 c5 b8 8c 4c 89 f0 48 c1 e8 03 42 0f b6 04 20 84 c0 75 42 45 0f b7 36 <48> 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 75 44 66 44 89 33 bf 0a RSP: 0018:ffffc900046ce968 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffc900046cea22 RCX: ffff888027a15a00 RDX: 0000000000000000 RSI: 00000000000000de RDI: 0000000000002710 RBP: 0000000000000002 R08: ffffc900046cea37 R09: 0000000000000000 R10: ffffc900046cea20 R11: fffff520008d9d47 R12: dffffc0000000000 R13: 00000000000000de R14: 0000000000003032 R15: ffffc900046cea22 FS: 0000000000000000(0000) GS:ffff888125c55000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2566f7d6e0 CR3: 000000007c4d8000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: number+0x2f8/0xf60 lib/vsprintf.c:505 vsnprintf+0x91b/0xf00 lib/vsprintf.c:2838 sprintf+0xd9/0x120 lib/vsprintf.c:3037 print_time kernel/printk/printk.c:1381 [inline] info_print_prefix+0x155/0x310 kernel/printk/printk.c:1407 record_print_text+0x154/0x430 kernel/printk/printk.c:1456 printk_get_next_message+0x26d/0x7b0 kernel/printk/printk.c:3024 console_emit_next_record kernel/printk/printk.c:3092 [inline] console_flush_all+0x4ca/0xc40 kernel/printk/printk.c:3226 __console_flush_and_unlock kernel/printk/printk.c:3285 [inline] console_unlock+0xc4/0x270 kernel/printk/printk.c:3325 vprintk_emit+0x5b7/0x7a0 kernel/printk/printk.c:2450 dev_vprintk_emit+0x337/0x3f0 drivers/base/core.c:4917 dev_printk_emit+0xe0/0x130 drivers/base/core.c:4928 __netdev_printk+0x3d7/0x4d0 net/core/dev.c:12508 netdev_warn+0x10a/0x160 net/core/dev.c:12561 ieee802154_subif_start_xmit+0x136/0x190 net/mac802154/tx.c:232 __netdev_start_xmit include/linux/netdevice.h:5215 [inline] netdev_start_xmit include/linux/netdevice.h:5224 [inline] xmit_one net/core/dev.c:3830 [inline] dev_hard_start_xmit+0x2d7/0x830 net/core/dev.c:3846 sch_direct_xmit+0x241/0x4b0 net/sched/sch_generic.c:344 __dev_xmit_skb net/core/dev.c:4102 [inline] __dev_queue_xmit+0x17b6/0x3a70 net/core/dev.c:4679 dev_queue_xmit include/linux/netdevice.h:3355 [inline] tx+0x6b/0x190 drivers/block/aoe/aoenet.c:62 kthread+0x1d0/0x3e0 drivers/block/aoe/aoecmd.c:1237 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245