watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz.7.3693:19330] Modules linked in: irq event stamp: 14330487 hardirqs last enabled at (14330486): [] irqentry_exit+0x5dd/0x660 kernel/entry/common.c:219 hardirqs last disabled at (14330487): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1056 softirqs last enabled at (14317192): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (14317192): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (14317192): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 softirqs last disabled at (14317195): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (14317195): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (14317195): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 CPU: 1 UID: 0 PID: 19330 Comm: syz.7.3693 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x0/0x90 kernel/kcov.c:320 Code: 7c 11 10 48 89 74 11 18 48 89 44 11 20 c3 cc cc cc cc cc 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 08 c0 7e 92 65 8b 15 08 09 RSP: 0018:ffffc90000a07938 EFLAGS: 00000246 RAX: ffffffff81cb8311 RBX: ffffe8ffffdee000 RCX: ffff888079ff8000 RDX: 0000000000000100 RSI: 0000000000000200 RDI: 0000000000000000 RBP: ffffc90000a079f0 R08: ffffc90000a07bcf R09: 0000000000000000 R10: ffffc90000a07bc0 R11: fffff52000140f7a R12: dffffc0000000000 R13: 1ffff92000140f2c R14: 00000000000000eb R15: 0000000000000000 FS: 00007fa7b07e56c0(0000) GS:ffff888125f34000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3320bff8 CR3: 00000000934c8000 CR4: 00000000003526f0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000200000000300 DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: arch_irqs_disabled_flags arch/x86/include/asm/irqflags.h:146 [inline] tracing_gen_ctx_flags include/linux/trace_events.h:199 [inline] tracing_gen_ctx include/linux/trace_events.h:208 [inline] perf_trace_buf_update+0x97/0x220 kernel/trace/trace_event_perf.c:429 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_acquire include/trace/events/lock.h:24 [inline] perf_trace_lock_acquire+0x335/0x410 include/trace/events/lock.h:24 __do_trace_lock_acquire include/trace/events/lock.h:24 [inline] trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0x2fb/0x340 kernel/locking/lockdep.c:5831 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:867 [inline] class_rcu_constructor include/linux/rcupdate.h:1195 [inline] is_module_text_address+0x39/0x1e0 kernel/module/main.c:3856 kernel_text_address+0x94/0xe0 kernel/extable.c:119 __kernel_text_address+0xd/0x40 kernel/extable.c:79 unwind_get_return_address+0x4d/0x90 arch/x86/kernel/unwind_orc.c:385 arch_stack_walk+0xfc/0x150 arch/x86/kernel/stacktrace.c:26 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 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584 poison_slab_object mm/kasan/common.c:252 [inline] __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:284 kasan_slab_free include/linux/kasan.h:234 [inline] slab_free_hook mm/slub.c:2540 [inline] slab_free mm/slub.c:6668 [inline] kmem_cache_free+0x197/0x620 mm/slub.c:6779 arp_process+0xee8/0x17a0 net/ipv4/arp.c:941 NF_HOOK+0x310/0x3a0 include/linux/netfilter.h:-1 __netif_receive_skb_list_ptype net/core/dev.c:6185 [inline] __netif_receive_skb_list_core+0x75a/0x800 net/core/dev.c:6227 __netif_receive_skb_list net/core/dev.c:6279 [inline] netif_receive_skb_list_internal+0x96f/0xcb0 net/core/dev.c:6370 gro_normal_list include/net/gro.h:524 [inline] gro_flush_normal include/net/gro.h:532 [inline] napi_complete_done+0x2aa/0x790 net/core/dev.c:6739 virtqueue_napi_complete drivers/net/virtio_net.c:766 [inline] virtnet_poll+0x24e0/0x2ee0 drivers/net/virtio_net.c:3144 __napi_poll+0xae/0x320 net/core/dev.c:7666 napi_poll net/core/dev.c:7729 [inline] net_rx_action+0x672/0xe50 net/core/dev.c:7881 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:check_preemption_disabled+0x2d/0x120 lib/smp_processor_id.c:53 Code: 41 56 53 48 83 ec 10 65 48 8b 05 be a1 22 07 48 89 44 24 08 65 8b 05 c6 a1 22 07 65 8b 0d bb a1 22 07 f7 c1 ff ff ff 7f 74 23 <65> 48 8b 0d 9b a1 22 07 48 3b 4c 24 08 0f 85 cc 00 00 00 48 83 c4 RSP: 0018:ffffc9000cf9eb08 EFLAGS: 00000202 RAX: 0000000000000001 RBX: ffffffff8de0fd60 RCX: 0000000000000002 RDX: ffffffff81743f85 RSI: ffffffff8bc086c0 RDI: ffffffff8bc08680 RBP: ffffc9000cf9ec40 R08: ffffc9000cf9f668 R09: 0000000000000000 R10: ffffc9000cf9edd8 R11: fffff520019f3dbd R12: 1ffff920019f3d70 R13: 000000000000000d R14: ffffffff8de0fd00 R15: dffffc0000000000 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 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+0x3e/0x60 mm/kasan/common.c:56 kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:556 __call_rcu_common kernel/rcu/tree.c:3119 [inline] call_rcu+0x157/0x9c0 kernel/rcu/tree.c:3239 context_switch kernel/sched/core.c:5259 [inline] __schedule+0x14c4/0x5000 kernel/sched/core.c:6863 preempt_schedule_notrace+0xd1/0x110 kernel/sched/core.c:7140 preempt_schedule_notrace_thunk+0x16/0x30 arch/x86/entry/thunk.S:13 class_preempt_notrace_destructor include/linux/preempt.h:469 [inline] __do_trace_lock_acquire include/trace/events/lock.h:24 [inline] trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0x331/0x340 kernel/locking/lockdep.c:5831 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:867 [inline] is_bpf_text_address+0x47/0x2b0 kernel/bpf/core.c:747 kernel_text_address+0xa5/0xe0 kernel/extable.c:125 __kernel_text_address+0xd/0x40 kernel/extable.c:79 unwind_get_return_address+0x4d/0x90 arch/x86/kernel/unwind_orc.c:385 arch_stack_walk+0xfc/0x150 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 save_stack+0xf5/0x1f0 mm/page_owner.c:165 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:320 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1395 [inline] __free_frozen_pages+0xbc8/0xd30 mm/page_alloc.c:2943 discard_slab mm/slub.c:3346 [inline] __put_partials+0x146/0x170 mm/slub.c:3886 put_cpu_partial+0x1f2/0x2d0 mm/slub.c:3961 __slab_free+0x288/0x2a0 mm/slub.c:5952 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x97/0x100 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_kmalloc+0x22/0xb0 mm/kasan/common.c:405 kasan_kmalloc include/linux/kasan.h:262 [inline] __do_kmalloc_node mm/slub.c:5657 [inline] __kmalloc_node_noprof+0x57a/0x820 mm/slub.c:5663 kmalloc_node_noprof include/linux/slab.h:987 [inline] __bpf_map_area_alloc kernel/bpf/syscall.c:395 [inline] bpf_map_area_alloc+0x64/0x180 kernel/bpf/syscall.c:408 htab_map_alloc+0x78/0xc40 kernel/bpf/hashtab.c:477 map_create+0xafd/0x16a0 kernel/bpf/syscall.c:1509 __sys_bpf+0x682/0x8a0 kernel/bpf/syscall.c:6184 __do_sys_bpf kernel/bpf/syscall.c:6315 [inline] __se_sys_bpf kernel/bpf/syscall.c:6313 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6313 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: 0033:0x7fa7af98f749 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:00007fa7b07e5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fa7afbe5fa0 RCX: 00007fa7af98f749 RDX: 0000000000000048 RSI: 0000200000000840 RDI: 0000000000000000 RBP: 00007fa7afa13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa7afbe6038 R14: 00007fa7afbe5fa0 R15: 00007ffc60e02b68 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 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:__migrate_enable include/linux/sched.h:2379 [inline] RIP: 0010:migrate_enable include/linux/sched.h:2429 [inline] RIP: 0010:bpf_prog_run_array include/linux/bpf.h:2430 [inline] RIP: 0010:trace_call_bpf+0x61e/0xb60 kernel/trace/bpf_trace.c:145 Code: c1 e8 03 42 80 3c 28 00 74 05 e8 1d 02 5b 00 48 8b 4c 24 28 48 89 c8 48 05 70 04 00 00 48 39 81 60 04 00 00 0f 85 92 02 00 00 ad 5f f4 ff 48 8b 44 24 20 42 0f b6 04 28 84 c0 0f 85 8e 04 00 RSP: 0018:ffffc900042ff000 EFLAGS: 00000046 RAX: ffff8880277822f0 RBX: 0000000000000001 RCX: ffff888027781e80 RDX: ffff888027781e80 RSI: 0000000000000001 RDI: ffff8880277822e0 RBP: ffffc900042ff118 R08: ffffc900042ff0af R09: 0000000000000000 R10: ffffc900042ff0a0 R11: ffffffffa0201808 R12: 0000000000000000 R13: dffffc0000000000 R14: 0000000000000001 R15: ffff888027782300 FS: 0000000000000000(0000) GS:ffff888125e34000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f01ba102030 CR3: 00000000b1b82000 CR4: 00000000003526f0 DR0: 0000200000000240 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: perf_trace_run_bpf_submit+0x78/0x170 kernel/events/core.c:11000 do_perf_trace_preemptirq_template include/trace/events/preemptirq.h:14 [inline] perf_trace_preemptirq_template+0x280/0x340 include/trace/events/preemptirq.h:14 __do_trace_irq_enable include/trace/events/preemptirq.h:40 [inline] trace_irq_enable+0xd8/0x100 include/trace/events/preemptirq.h:40 trace_hardirqs_on+0x18/0x40 kernel/trace/trace_preemptirq.c:73 console_trylock_spinning kernel/printk/printk.c:2030 [inline] vprintk_emit+0x420/0x5f0 kernel/printk/printk.c:2425 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