watchdog: BUG: soft lockup - CPU#1 stuck for 144s! [syz.2.546:8328] Modules linked in: irq event stamp: 13326393 hardirqs last enabled at (13326392): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:200 hardirqs last disabled at (13326393): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1050 softirqs last enabled at (9632342): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (9632342): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (9632342): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (9632345): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (9632345): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (9632345): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 1 UID: 0 PID: 8328 Comm: syz.2.546 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:__read_once_word_nocheck+0x3/0x10 include/asm-generic/rwonce.h:67 Code: b0 00 48 ba 00 00 00 00 00 fc ff df e9 88 fc ff ff 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 07 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90000a07c70 EFLAGS: 00000246 RAX: ffffffff810014ca RBX: ffffc900173dfbc0 RCX: 0000000000000001 RDX: 0000000000000002 RSI: ffffc900173e0000 RDI: ffffc900173dfbc0 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffffff8172c195 R10: ffffc90000a07d98 R11: ffffffff81ac3930 R12: ffffc900173e0000 R13: 1ffff92000140fab R14: ffffc90000a07d48 R15: ffffc900173d8000 FS: 00007f6f5ab3d6c0(0000) GS:ffff888125d1c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6f57fd5d58 CR3: 000000006d586000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: deref_stack_reg arch/x86/kernel/unwind_orc.c:406 [inline] unwind_next_frame+0xc3c/0x2390 arch/x86/kernel/unwind_orc.c:585 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:243 [inline] __kasan_slab_free+0x5b/0x80 mm/kasan/common.c:275 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2417 [inline] slab_free mm/slub.c:4680 [inline] kmem_cache_free+0x18f/0x400 mm/slub.c:4782 skb_release_data+0x62d/0x7c0 net/core/skbuff.c:1086 skb_release_all net/core/skbuff.c:1151 [inline] __kfree_skb net/core/skbuff.c:1165 [inline] sk_skb_reason_drop+0x127/0x170 net/core/skbuff.c:1203 kfree_skb_reason include/linux/skbuff.h:1275 [inline] dev_kfree_skb_any_reason+0x111/0x120 net/core/dev.c:3442 dev_kfree_skb_any include/linux/netdevice.h:4140 [inline] team_dummy_transmit+0x1a/0x30 drivers/net/team/team_core.c:503 team_xmit+0x2e6/0x490 drivers/net/team/team_core.c:1732 __netdev_start_xmit include/linux/netdevice.h:5219 [inline] netdev_start_xmit include/linux/netdevice.h:5228 [inline] xmit_one net/core/dev.c:3827 [inline] dev_hard_start_xmit+0x2d7/0x830 net/core/dev.c:3843 __dev_queue_xmit+0x1b8d/0x3b50 net/core/dev.c:4713 dev_queue_xmit include/linux/netdevice.h:3358 [inline] neigh_hh_output include/net/neighbour.h:531 [inline] neigh_output include/net/neighbour.h:545 [inline] ip6_finish_output2+0x11bc/0x16a0 net/ipv6/ip6_output.c:141 NF_HOOK include/linux/netfilter.h:318 [inline] ndisc_send_skb+0xb54/0x1440 net/ipv6/ndisc.c:512 addrconf_rs_timer+0x369/0x670 net/ipv6/addrconf.c:4037 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+0x283/0x870 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:finish_task_switch+0x26b/0x950 kernel/sched/core.c:5225 Code: 0f 84 3c 01 00 00 48 85 db 0f 85 63 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 2f a7 ea 09 e8 5a 3f 36 00 fb 4c 8b 65 c0 <49> 8d bc 24 18 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0 RSP: 0018:ffffc900173dfc78 EFLAGS: 00000286 RAX: ada0307c75e18100 RBX: 0000000000000000 RCX: ada0307c75e18100 RDX: 0000000000000000 RSI: ffffffff8d9b68b0 RDI: ffffffff8be33280 RBP: ffffc900173dfcd0 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6 R10: dffffc0000000000 R11: fffffbfff1f46fc7 R12: ffff888030e25a00 R13: dffffc0000000000 R14: ffff888032bf0000 R15: ffff8880b873ab58 context_switch kernel/sched/core.c:5360 [inline] __schedule+0x17a0/0x4cc0 kernel/sched/core.c:6961 __schedule_loop kernel/sched/core.c:7043 [inline] schedule+0x165/0x360 kernel/sched/core.c:7058 exit_to_user_mode_loop kernel/entry/common.c:31 [inline] exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] irqentry_exit_to_user_mode+0x5d/0x120 kernel/entry/common.c:73 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0033:0x7f6f59c5ea7c Code: 74 24 50 bf 01 00 00 00 48 89 c2 48 c1 e2 04 48 29 c2 48 8d 05 15 bf 23 00 48 8b 2c d0 e8 dc 58 12 00 85 c0 0f 85 01 02 00 00 <48> 69 4c 24 50 e8 03 00 00 4c 8b 34 24 49 89 d8 48 ba db 34 b6 d7 RSP: 002b:00007f6f5ab3d060 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00000000000000da RDX: 00000000000000da RSI: 00007f6f5ab3d0b0 RDI: 0000000000000001 RBP: 00007f6f59e23b64 R08: 000000002a46186f R09: 7fffffffffffffff R10: 3fffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6f59fc6038 R14: 00007f6f59fc5fa0 R15: 00007ffd1e17db48 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 1306 Comm: aoe_tx0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:vsnprintf+0x693/0xf00 lib/vsprintf.c:-1 Code: 80 e1 07 38 c1 7c ce 4c 89 e7 e8 78 c7 ad f6 eb c4 e8 61 5f 4a f6 4c 8b 64 24 10 e9 40 04 00 00 41 83 ff 28 0f 87 17 02 00 00 <4c> 89 74 24 08 e8 43 5f 4a f6 48 8b 44 24 30 80 3c 18 00 4c 8b 74 RSP: 0018:ffffc9000469ead0 EFLAGS: 00000297 RAX: ffffffff8b7547ec RBX: dffffc0000000000 RCX: 0000000000000000 RDX: ffff88802757da00 RSI: 0000000000000010 RDI: 0000000000000029 RBP: ffffffff8b8b7e65 R08: ffff88802757da00 R09: 0000000000000008 R10: 0000000000000007 R11: 0000000000000000 R12: 0000000000000800 R13: ffffc9000469eda1 R14: 0000000000000801 R15: 0000000000000010 FS: 0000000000000000(0000) GS:ffff888125c1c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc7f3d04380 CR3: 000000006d586000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: sprintf+0xd9/0x120 lib/vsprintf.c:3089 print_time kernel/printk/printk.c:1381 [inline] info_print_prefix+0x155/0x310 kernel/printk/printk.c:1407 record_print_text+0x154/0x420 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:4914 dev_printk_emit+0xe0/0x130 drivers/base/core.c:4925 __netdev_printk+0x3d7/0x4d0 net/core/dev.c:12580 netdev_warn+0x10a/0x160 net/core/dev.c:12633 ieee802154_subif_start_xmit+0x136/0x190 net/mac802154/tx.c:232 __netdev_start_xmit include/linux/netdevice.h:5219 [inline] netdev_start_xmit include/linux/netdevice.h:5228 [inline] xmit_one net/core/dev.c:3827 [inline] dev_hard_start_xmit+0x2d7/0x830 net/core/dev.c:3843 sch_direct_xmit+0x241/0x4b0 net/sched/sch_generic.c:344 __dev_xmit_skb net/core/dev.c:4102 [inline] __dev_queue_xmit+0x1857/0x3b50 net/core/dev.c:4679 dev_queue_xmit include/linux/netdevice.h:3358 [inline] tx+0x6b/0x190 drivers/block/aoe/aoenet.c:62 kthread+0x1d0/0x3e0 drivers/block/aoe/aoecmd.c:1241 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245