watchdog: BUG: soft lockup - CPU#0 stuck for 144s! [kworker/u8:33:28033] Modules linked in: irq event stamp: 6283400 hardirqs last enabled at (6283399): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:214 hardirqs last disabled at (6283400): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1052 softirqs last enabled at (6283398): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (6283398): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (6283398): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 softirqs last disabled at (6283389): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (6283389): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (6283389): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 CPU: 0 UID: 0 PID: 28033 Comm: kworker/u8:33 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:342 [inline] RIP: 0010:smp_call_function_many_cond+0xd38/0x12d0 kernel/smp.c:877 Code: 89 ee 83 e6 01 31 ff e8 96 73 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 41 6f 0b 00 eb 38 f3 90 42 0f b6 04 2b <84> c0 75 11 41 f7 04 24 01 00 00 00 74 1e e8 25 6f 0b 00 eb e4 44 RSP: 0018:ffffc9000ca87640 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 1ffff110170e7ffd RCX: ffff88802d7f3c80 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000ca877c0 R08: ffffffff8f9e1177 R09: 1ffffffff1f3c22e R10: dffffc0000000000 R11: fffffbfff1f3c22f R12: ffff8880b873ffe8 R13: dffffc0000000000 R14: ffff8880b863b240 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff888125d0c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffd66f0000 CR3: 000000000df38000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000200000000300 DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1043 on_each_cpu include/linux/smp.h:71 [inline] smp_text_poke_sync_each_cpu arch/x86/kernel/alternative.c:2713 [inline] smp_text_poke_batch_finish+0x5f9/0x1130 arch/x86/kernel/alternative.c:2923 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x128/0x250 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 toggle_allocation_gate+0xad/0x240 mm/kfence/core.c:852 process_one_work kernel/workqueue.c:3263 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 15924 Comm: syz.4.12582 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 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 19 28 RSP: 0018:ffffc90000a08178 EFLAGS: 00000006 RAX: 0000000000000002 RBX: ffffffff8b6d08a3 RCX: ffff888047d80000 RDX: ffffffff81adc79e RSI: ffff8880b8727ad8 RDI: ffffffff8b6d08a0 RBP: ffffc90000a08288 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff52000141050 R12: 1ffff9200014103c R13: ffffffff81adc79e R14: dffffc0000000000 R15: 0000000000000001 FS: 00007f8ad6c406c0(0000) GS:ffff888125e0c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffd66f0000 CR3: 00000000ae48a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 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+0x3b2/0x3e0 kernel/locking/lockdep.c:5879 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline] _raw_spin_unlock_irqrestore+0x70/0x110 kernel/locking/spinlock.c:194 unlock_hrtimer_base kernel/time/hrtimer.c:1013 [inline] hrtimer_try_to_cancel+0x3be/0x420 kernel/time/hrtimer.c:1360 hrtimer_cancel+0x3b/0x50 kernel/time/hrtimer.c:1481 perf_swevent_cancel_hrtimer kernel/events/core.c:11830 [inline] cpu_clock_event_stop+0xd9/0x130 kernel/events/core.c:11880 __perf_event_overflow+0x580/0xe40 kernel/events/core.c:10346 perf_swevent_hrtimer+0x3b8/0x500 kernel/events/core.c:11786 __run_hrtimer kernel/time/hrtimer.c:1777 [inline] __hrtimer_run_queues+0x4e0/0xc60 kernel/time/hrtimer.c:1841 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1903 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1041 [inline] __sysvec_apic_timer_interrupt+0x10b/0x410 arch/x86/kernel/apic/apic.c:1058 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1052 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xa8/0x110 kernel/locking/spinlock.c:194 Code: 74 05 e8 db 5b 79 f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 d3 8a 41 f6 65 8b 05 dc 98 42 07 85 c0 74 40 48 c7 04 24 0e 36 RSP: 0018:ffffc90000a08b40 EFLAGS: 00000206 RAX: 753a477e1d09d300 RBX: 0000000000000a06 RCX: 753a477e1d09d300 RDX: 0000000000000000 RSI: ffffffff8d7e83b6 RDI: 0000000000000001 RBP: ffffc90000a08bd0 R08: ffffffff8f9e1177 R09: 1ffffffff1f3c22e R10: dffffc0000000000 R11: fffffbfff1f3c22f R12: dffffc0000000000 R13: ffffffff81a82877 R14: ffffffff99c68798 R15: 1ffff92000141168 debug_rcu_head_unqueue kernel/rcu/rcu.h:248 [inline] rcu_do_batch kernel/rcu/tree.c:2597 [inline] rcu_core+0xc30/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 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:1052 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1052 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:lock_acquire+0x175/0x360 kernel/locking/lockdep.c:5872 Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 fb ac f3 10 <48> 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e RSP: 0018:ffffc9000406e9b8 EFLAGS: 00000206 RAX: 753a477e1d09d300 RBX: 0000000000000000 RCX: 753a477e1d09d300 RDX: 0000000000000001 RSI: ffffffff8d9d156c RDI: ffffffff8bc076e0 RBP: ffffffff8173cd25 R08: 0000000000000000 R09: ffffffff8173cd25 R10: ffffc9000406ebd8 R11: fffff5200080dd7d R12: 0000000000000002 R13: ffffffff8e13d2e0 R14: 0000000000000000 R15: 0000000000000246 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] unwind_next_frame+0xc2/0x2390 arch/x86/kernel/unwind_orc.c:479 __unwind_start+0x5b9/0x760 arch/x86/kernel/unwind_orc.c:758 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 poison_kmalloc_redzone mm/kasan/common.c:400 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:417 kasan_kmalloc include/linux/kasan.h:262 [inline] __do_kmalloc_node mm/slub.c:5627 [inline] __kmalloc_node_track_caller_noprof+0x568/0x800 mm/slub.c:5736 __do_krealloc mm/slub.c:6960 [inline] krealloc_node_align_noprof+0x140/0x390 mm/slub.c:7019 push_jmp_history+0x1d7/0x700 kernel/bpf/verifier.c:3910 check_cond_jmp_op+0xc60/0x2d50 kernel/bpf/verifier.c:16771 do_check_insn kernel/bpf/verifier.c:19929 [inline] do_check+0x5ac2/0xee10 kernel/bpf/verifier.c:20069 do_check_common+0x1938/0x24e0 kernel/bpf/verifier.c:23259 do_check_main kernel/bpf/verifier.c:23342 [inline] bpf_check+0x183de/0x1d720 kernel/bpf/verifier.c:24647 bpf_prog_load+0x13ba/0x19e0 kernel/bpf/syscall.c:3077 __sys_bpf+0x507/0x860 kernel/bpf/syscall.c:6149 __do_sys_bpf kernel/bpf/syscall.c:6259 [inline] __se_sys_bpf kernel/bpf/syscall.c:6257 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6257 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8ad5d8efc9 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:00007f8ad6c40038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f8ad5fe5fa0 RCX: 00007f8ad5d8efc9 RDX: 0000000000000048 RSI: 0000200000000200 RDI: 0000000000000005 RBP: 00007f8ad5e11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f8ad5fe6038 R14: 00007f8ad5fe5fa0 R15: 00007ffede15c9f8