watchdog: BUG: soft lockup - CPU#0 stuck for 144s! [syz.8.5012:24851] Modules linked in: irq event stamp: 14210729 hardirqs last enabled at (14210728): [] irqentry_exit+0x5dd/0x660 kernel/entry/common.c:219 hardirqs last disabled at (14210729): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1056 softirqs last enabled at (182654): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (182654): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (182654): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 softirqs last disabled at (182657): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (182657): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (182657): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 CPU: 0 UID: 0 PID: 24851 Comm: syz.8.5012 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:perf_trace_buf_update+0x8/0x220 kernel/trace/trace_event_perf.c:426 Code: fc 02 e9 4f fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 48 89 e5 <41> 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec 80 00 00 00 41 89 RSP: 0018:ffffc90000006d70 EFLAGS: 00000246 RAX: ffffc90000006f40 RBX: ffffe8ffffcc03b8 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 00000000000000ec RDI: ffffe8ffffce7000 RBP: ffffc90000006d70 R08: ffffc90000006f4f R09: 0000000000000000 R10: ffffc90000006f40 R11: fffff52000000dea R12: 000000000000002c R13: ffffe8ffffce7000 R14: ffffc90000006e00 R15: dffffc0000000000 FS: 00007f29f1ab06c0(0000) GS:ffff888125e35000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b34424220 CR3: 0000000024eda000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: perf_tp_event+0xf6/0x1380 kernel/events/core.c:11067 perf_trace_run_bpf_submit+0xee/0x170 kernel/events/core.c:11005 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 poison_kmalloc_redzone mm/kasan/common.c:397 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:414 kasan_kmalloc include/linux/kasan.h:262 [inline] __kmalloc_cache_noprof+0x3e2/0x700 mm/slub.c:5776 kmalloc_noprof include/linux/slab.h:957 [inline] kzalloc_noprof include/linux/slab.h:1094 [inline] ref_tracker_alloc+0x133/0x460 lib/ref_tracker.c:271 __netdev_tracker_alloc include/linux/netdevice.h:4400 [inline] netdev_hold include/linux/netdevice.h:4429 [inline] dst_init+0xd9/0x450 net/core/dst.c:52 dst_alloc+0x12a/0x170 net/core/dst.c:93 ip6_dst_alloc net/ipv6/route.c:342 [inline] icmp6_dst_alloc+0x75/0x420 net/ipv6/route.c:3322 ndisc_send_skb+0x3f1/0x1510 net/ipv6/ndisc.c:491 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:preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:7190 Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 10 00 00 00 74 64 bf 01 00 00 00 e8 ab 26 34 f6 e8 46 a4 6c f6 fb bf 01 00 00 00 1b a8 ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24 RSP: 0018:ffffc90002e978e0 EFLAGS: 00000282 RAX: 6ba1168f70b09900 RBX: 0000000000000000 RCX: 6ba1168f70b09900 RDX: 0000000000000006 RSI: ffffffff8d7922ac RDI: 0000000000000001 RBP: ffffc90002e97980 R08: ffffffff8f821f77 R09: 1ffffffff1f043ee R10: dffffc0000000000 R11: fffffbfff1f043ef R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920005d2f1c irqentry_exit+0x5d8/0x660 kernel/entry/common.c:216 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:perf_trace_init+0x96/0x2d0 kernel/trace/trace_event_perf.c:223 Code: 5c 00 48 8b 1d 3b 28 2f 0c 48 81 fb 80 91 fa 8d 0f 84 75 01 00 00 4c 89 24 24 4c 8d 63 30 4c 89 e0 48 c1 e8 03 42 0f b6 04 30 <84> c0 0f 85 17 01 00 00 4d 63 24 24 4c 89 ff 4c 89 e6 e8 33 4b f6 RSP: 0018:ffffc90002e97a98 EFLAGS: 00000a02 RAX: 0000000000000000 RBX: ffffffff8ed0a4c0 RCX: 0000000000080000 RDX: ffffc9000d616000 RSI: 0000000000000de4 RDI: 0000000000000de5 RBP: 0000000000000002 R08: ffffffff8f821f77 R09: 1ffffffff1f043ee R10: dffffc0000000000 R11: fffffbfff1f043ef R12: ffffffff8ed0a4f0 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000149 perf_tp_event_init+0x8d/0x120 kernel/events/core.c:10941 perf_try_init_event+0x17f/0x870 kernel/events/core.c:12684 perf_init_event kernel/events/core.c:12782 [inline] perf_event_alloc+0x1430/0x2d50 kernel/events/core.c:13057 __do_sys_perf_event_open kernel/events/core.c:13575 [inline] __se_sys_perf_event_open+0x756/0x1d90 kernel/events/core.c:13456 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: 0033:0x7f29f0b8f749 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:00007f29f1ab0038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f29f0de5fa0 RCX: 00007f29f0b8f749 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000180 RBP: 00007f29f0c13f91 R08: 000000000000000a R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007f29f0de6038 R14: 00007f29f0de5fa0 R15: 00007ffeb88c1378 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 1300 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:check_preemption_disabled+0x0/0x120 lib/smp_processor_id.c:13 Code: c7 00 83 c0 8b 48 c7 c6 40 83 c0 8b eb 1c 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <55> 41 57 41 56 53 48 83 ec 10 65 48 8b 05 be e1 22 07 48 89 44 24 RSP: 0018:ffffc90000a089f8 EFLAGS: 00000046 RAX: 0000607ed9e8b3b8 RBX: ffffffff8de0fd60 RCX: 000000008b6d3e00 RDX: ffffffff81af68b5 RSI: ffffffff8bc08340 RDI: ffffffff8bc08300 RBP: ffffc90000a08ae8 R08: ffffffff81af68b5 R09: ffffffff998e3508 R10: dffffc0000000000 R11: ffffffff81b36590 R12: 1ffff92000141148 R13: 0000000000000010 R14: ffffffff8de0fd00 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888125f35000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f989248b729 CR3: 000000001108c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: do_perf_trace_lock include/trace/events/lock.h:50 [inline] perf_trace_lock+0xec/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 seqcount_lockdep_reader_access+0xde/0x1c0 include/linux/seqlock.h:73 ktime_get+0x45/0x200 kernel/time/timekeeping.c:824 tick_nohz_handler+0x93/0x710 kernel/time/tick-sched.c:310 __run_hrtimer kernel/time/hrtimer.c:1777 [inline] __hrtimer_run_queues+0x4d0/0xc30 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 82 62 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:ffffc9000493f280 EFLAGS: 00000293 RAX: ffffffff81a14f98 RBX: ffffffff81a14df1 RCX: ffff888027a09e80 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8df358e0 RBP: ffffc9000493f390 R08: ffffffff8f821f77 R09: 1ffffffff1f043ee R10: dffffc0000000000 R11: fffffbfff1f043ef R12: 0000000000000000 R13: 000000000000002d R14: 0000000000000200 R15: 1ffff92000927e54 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