watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz.1.4175:21887] Modules linked in: irq event stamp: 14792715 hardirqs last enabled at (14792714): [] irqentry_exit+0x5dd/0x660 kernel/entry/common.c:219 hardirqs last disabled at (14792715): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1056 softirqs last enabled at (7099918): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (7099918): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (7099918): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 softirqs last disabled at (7099921): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (7099921): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (7099921): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 CPU: 0 UID: 0 PID: 21887 Comm: syz.1.4175 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:unwind_next_frame+0x9fc/0x23d0 arch/x86/kernel/unwind_orc.c:536 Code: e9 a9 02 00 00 49 8d 5e 40 48 89 d8 48 c1 e8 03 80 3c 28 00 74 11 48 89 df e8 b0 0b b4 00 48 8b 34 24 48 8b 54 24 08 4c 8b 23 <48> 8d 5a 01 48 89 d0 48 c1 e8 03 0f b6 04 28 84 c0 0f 85 94 15 00 RSP: 0018:ffffc90000007418 EFLAGS: 00000246 RAX: 1ffff92000000eb1 RBX: ffffc90000007588 RCX: ffffffff8f9933c4 RDX: ffffffff90143d74 RSI: ffffffff90143d78 RDI: ffffffff8bc08680 RBP: dffffc0000000000 R08: 0000000000000005 R09: ffffffff8df41a20 R10: ffffc90000007048 R11: fffff52000000e0b R12: ffffc900000075d0 R13: ffffc90000007598 R14: ffffc90000007548 R15: ffffc90000007580 FS: 00007fb16cd4f6c0(0000) GS:ffff888125e34000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001780 CR3: 0000000094a22000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __unwind_start+0x5b9/0x760 arch/x86/kernel/unwind_orc.c:773 unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0xe4/0x150 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:56 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:77 unpoison_slab_object mm/kasan/common.c:339 [inline] __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:365 kasan_slab_alloc include/linux/kasan.h:252 [inline] slab_post_alloc_hook mm/slub.c:4953 [inline] slab_alloc_node mm/slub.c:5263 [inline] kmem_cache_alloc_node_noprof+0x43c/0x720 mm/slub.c:5315 __alloc_skb+0x255/0x430 net/core/skbuff.c:679 alloc_skb include/linux/skbuff.h:1383 [inline] ndisc_alloc_skb+0x9f/0x480 net/ipv6/ndisc.c:420 ndisc_send_rs+0x2b5/0x630 net/ipv6/ndisc.c:706 addrconf_rs_timer+0x369/0x6a0 net/ipv6/addrconf.c:4037 call_timer_fn+0x16e/0x590 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1799 [inline] __run_timers kernel/time/timer.c:2373 [inline] __run_timer_base+0x61a/0x860 kernel/time/timer.c:2385 run_timer_base kernel/time/timer.c:2394 [inline] run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2404 handle_softirqs+0x27d/0x850 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:bpf_prog_array_valid include/linux/trace_events.h:453 [inline] RIP: 0010:perf_trace_run_bpf_submit+0x44/0x170 kernel/events/core.c:10998 Code: 49 89 cd 89 d3 89 74 24 04 49 89 fc 48 bd 00 00 00 00 00 fc ff df e8 5b 84 ce ff 4d 8d 7d 68 4c 89 f8 48 c1 e8 03 80 3c 28 00 <74> 08 4c 89 ff e8 92 26 35 00 49 83 3f 00 74 5c 4c 89 e0 48 c1 e8 RSP: 0018:ffffc9000ea77708 EFLAGS: 00000246 RAX: 1ffffffff1bc1fad RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc9000dd7b000 RSI: 000000000000149c RDI: 000000000000149d RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff8880b86330f0 R10: dffffc0000000000 R11: fffff91ffff05205 R12: ffffe8ffff829000 R13: ffffffff8de0fd00 R14: ffff8880b86330f0 R15: ffffffff8de0fd68 do_perf_trace_lock include/trace/events/lock.h:50 [inline] perf_trace_lock+0x2f8/0x3b0 include/trace/events/lock.h:50 __do_trace_lock_release include/trace/events/lock.h:69 [inline] trace_lock_release include/trace/events/lock.h:69 [inline] lock_release+0x389/0x3b0 kernel/locking/lockdep.c:5879 rcu_lock_release include/linux/rcupdate.h:341 [inline] rcu_read_unlock include/linux/rcupdate.h:897 [inline] class_rcu_destructor include/linux/rcupdate.h:1195 [inline] unwind_next_frame+0x1ab1/0x23d0 arch/x86/kernel/unwind_orc.c:695 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:56 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:77 unpoison_slab_object mm/kasan/common.c:339 [inline] __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:365 kasan_slab_alloc include/linux/kasan.h:252 [inline] slab_post_alloc_hook mm/slub.c:4953 [inline] slab_alloc_node mm/slub.c:5263 [inline] kmem_cache_alloc_lru_noprof+0x36c/0x6e0 mm/slub.c:5282 sock_alloc_inode+0x28/0xc0 net/socket.c:322 alloc_inode+0x6a/0x1b0 fs/inode.c:346 new_inode_pseudo include/linux/fs.h:2964 [inline] sock_alloc net/socket.c:637 [inline] __sock_create+0x12d/0x9d0 net/socket.c:1569 sock_create net/socket.c:1663 [inline] __sys_socket_create net/socket.c:1700 [inline] __sys_socket+0xd7/0x1b0 net/socket.c:1747 __do_sys_socket net/socket.c:1761 [inline] __se_sys_socket net/socket.c:1759 [inline] __x64_sys_socket+0x7a/0x90 net/socket.c:1759 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb16bf8f749 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:00007fb16cd4f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007fb16c1e5fa0 RCX: 00007fb16bf8f749 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000010 RBP: 00007fb16c013f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb16c1e6038 R14: 00007fb16c1e5fa0 R15: 00007ffe8c69afa8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 1303 Comm: aoe_tx0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:strlen+0x3f/0x70 lib/string.c:420 Code: 00 00 00 00 fc ff df 48 89 fb 49 89 c7 48 89 d8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 11 48 ff c3 49 8d 47 01 42 80 7c 3f 01 00 <75> de eb 19 89 d9 80 e1 07 38 c1 7c e6 49 89 fc 48 89 df e8 09 a7 RSP: 0018:ffffc90000a08a58 EFLAGS: 00000006 RAX: 0000000000000009 RBX: ffffffff8b6c108a RCX: 000000008b6c1001 RDX: ffffffff819549a9 RSI: ffffffff8df41a20 RDI: ffffffff8b6c1080 RBP: ffffc90000a08b78 R08: ffff88801aea295f R09: 1ffff110035d452b R10: dffffc0000000000 R11: ffffed10035d452c R12: 1ffff92000141158 R13: ffffffff819549a9 R14: dffffc0000000000 R15: 0000000000000008 FS: 0000000000000000(0000) GS:ffff888125f34000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6ff3a98f98 CR3: 0000000076c5a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __fortify_strlen include/linux/fortify-string.h:268 [inline] trace_event_get_offsets_lock include/trace/events/lock.h:50 [inline] do_perf_trace_lock include/trace/events/lock.h:50 [inline] perf_trace_lock+0xc2/0x3b0 include/trace/events/lock.h:50 __do_trace_lock_release include/trace/events/lock.h:69 [inline] trace_lock_release include/trace/events/lock.h:69 [inline] lock_release+0x389/0x3b0 kernel/locking/lockdep.c:5879 rcu_lock_release include/linux/rcupdate.h:341 [inline] rcu_read_unlock include/linux/rcupdate.h:897 [inline] select_task_rq_fair+0x64c/0x3570 kernel/sched/fair.c:8583 select_task_rq kernel/sched/core.c:3497 [inline] try_to_wake_up+0x4d8/0x12b0 kernel/sched/core.c:4206 hrtimer_wakeup+0x4e/0x60 kernel/time/hrtimer.c:2013 __run_hrtimer kernel/time/hrtimer.c:1777 [inline] __hrtimer_run_queues+0x51c/0xc30 kernel/time/hrtimer.c:1841 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1903 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1045 [inline] __sysvec_apic_timer_interrupt+0x102/0x3e0 arch/x86/kernel/apic/apic.c:1062 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline] sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1056 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2037 [inline] RIP: 0010:vprintk_emit+0x4d0/0x5f0 kernel/printk/printk.c:2425 Code: 0f 84 34 ff ff ff e8 cf 62 20 00 fb eb 44 e8 c7 62 20 00 e8 a2 b2 ba 09 4d 85 f6 74 94 e8 b8 62 20 00 fb 48 c7 c7 e0 58 f3 8d <31> f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 45 31 c9 53 e8 28 26 RSP: 0018:ffffc90004257280 EFLAGS: 00000293 RAX: ffffffff81a14f78 RBX: ffffffff81a14dd1 RCX: ffff88802723db80 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8df358e0 RBP: ffffc90004257390 R08: ffffffff8f822377 R09: 1ffffffff1f0446e R10: dffffc0000000000 R11: fffffbfff1f0446f R12: 0000000000000000 R13: 000000000000002d R14: 0000000000000200 R15: 1ffff9200084ae54 dev_vprintk_emit+0x337/0x3f0 drivers/base/core.c:4914 dev_printk_emit+0xe0/0x130 drivers/base/core.c:4925 __netdev_printk+0x3e1/0x480 net/core/dev.c:12901 netdev_warn+0x10a/0x160 net/core/dev.c:12954 ieee802154_subif_start_xmit+0x136/0x190 net/mac802154/tx.c:232 __netdev_start_xmit include/linux/netdevice.h:5273 [inline] netdev_start_xmit include/linux/netdevice.h:5282 [inline] xmit_one net/core/dev.c:3853 [inline] dev_hard_start_xmit+0x2cd/0x800 net/core/dev.c:3869 sch_direct_xmit+0x241/0x4b0 net/sched/sch_generic.c:347 __dev_xmit_skb net/core/dev.c:4169 [inline] __dev_queue_xmit+0x136f/0x3140 net/core/dev.c:4783 dev_queue_xmit include/linux/netdevice.h:3381 [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+0x599/0xb30 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246