watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.3.428:7417] Modules linked in: irq event stamp: 166570 hardirqs last enabled at (166569): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:200 hardirqs last disabled at (166570): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1050 softirqs last enabled at (166564): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (166564): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (166564): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (166559): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (166559): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (166559): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 1 UID: 0 PID: 7417 Comm: syz.3.428 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:csd_lock_wait kernel/smp.c:342 [inline] RIP: 0010:smp_call_function_many_cond+0xd33/0x12d0 kernel/smp.c:877 Code: 45 8b 2c 24 44 89 ee 83 e6 01 31 ff e8 56 63 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 01 5f 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 e5 5e RSP: 0018:ffffc9001b347940 EFLAGS: 00000293 RAX: ffffffff81b4601b RBX: 1ffff110170c8341 RCX: ffff888025b39e00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9001b347ac0 R08: ffffffff8fa3a437 R09: 1ffffffff1f47486 R10: dffffc0000000000 R11: fffffbfff1f47487 R12: ffff8880b8641a08 R13: dffffc0000000000 R14: ffff8880b873b1c0 R15: 0000000000000000 FS: 0000555558f34500(0000) GS:ffff888125d15000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33320ff8 CR3: 0000000076af0000 CR4: 00000000003526f0 Call Trace: on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1044 on_each_cpu include/linux/smp.h:71 [inline] smp_text_poke_sync_each_cpu arch/x86/kernel/alternative.c:2653 [inline] smp_text_poke_batch_finish+0x5f9/0x1130 arch/x86/kernel/alternative.c:2863 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_disable_cpuslocked+0xc5/0x1b0 kernel/jump_label.c:240 static_key_disable+0x1a/0x20 kernel/jump_label.c:248 tracepoint_remove_func kernel/tracepoint.c:370 [inline] tracepoint_probe_unregister+0x80e/0x9b0 kernel/tracepoint.c:504 bpf_raw_tp_link_release+0x43/0x70 kernel/bpf/syscall.c:3655 bpf_link_free+0xea/0x330 kernel/bpf/syscall.c:3166 bpf_link_put_direct kernel/bpf/syscall.c:3209 [inline] bpf_link_release+0x6b/0x80 kernel/bpf/syscall.c:3216 __fput+0x449/0xa70 fs/file_table.c:468 task_work_run+0x1d1/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:43 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline] do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5401d8eba9 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:00007fff6b7d1948 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007f5401fd7da0 RCX: 00007f5401d8eba9 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007f5401fd7da0 R08: 000000000000335c R09: 000000136b7d1c3f R10: 00000000003fca80 R11: 0000000000000246 R12: 0000000000028286 R13: 00007fff6b7d1a40 R14: ffffffffffffffff R15: 00007fff6b7d1a60 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 7424 Comm: syz.2.430 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:kasan_mem_to_shadow include/linux/kasan.h:64 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:130 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x6f/0x2c0 mm/kasan/generic.c:189 Code: 1e fa 4c 39 cf 0f 82 58 02 00 00 49 89 ff 49 c1 ef 03 49 ba 00 00 00 00 00 fc ff df 4f 8d 1c 17 49 ff c8 4d 89 c1 49 c1 e9 03 <48> bb 01 00 00 00 00 fc ff df 4d 8d 34 19 4d 89 f4 4d 29 dc 49 83 RSP: 0018:ffffc90000007788 EFLAGS: 00000806 RAX: 00000000ffffff01 RBX: ffff8880b8627a80 RCX: ffffffff819e12a2 RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff8880b8627a80 RBP: ffffc90000007870 R08: ffff8880b8627a83 R09: 1ffff110170c4f50 R10: dffffc0000000000 R11: ffffed10170c4f50 R12: ffff8880b8627a90 R13: ffff8880b8627a88 R14: 1ffff110170c4f52 R15: 1ffff110170c4f50 FS: 00007f81be4946c0(0000) GS:ffff888125c15000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000100000000 CR3: 000000007fdd4000 CR4: 00000000003526f0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: instrument_atomic_read_write include/linux/instrumented.h:96 [inline] atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1300 [inline] queued_spin_lock include/asm-generic/qspinlock.h:111 [inline] do_raw_spin_lock+0x112/0x290 kernel/locking/spinlock_debug.c:116 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline] _raw_spin_lock_irqsave+0xb3/0xf0 kernel/locking/spinlock.c:162 lock_hrtimer_base kernel/time/hrtimer.c:171 [inline] hrtimer_try_to_cancel+0x22b/0x420 kernel/time/hrtimer.c:1362 hrtimer_cancel+0x3b/0x50 kernel/time/hrtimer.c:1488 perf_swevent_cancel_hrtimer kernel/events/core.c:11813 [inline] cpu_clock_event_stop+0xd9/0x130 kernel/events/core.c:11863 __perf_event_overflow+0x57d/0xe40 kernel/events/core.c:10333 perf_swevent_hrtimer+0x3c5/0x550 kernel/events/core.c:11769 __run_hrtimer kernel/time/hrtimer.c:1761 [inline] __hrtimer_run_queues+0x4dd/0xc60 kernel/time/hrtimer.c:1825 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1887 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline] __sysvec_apic_timer_interrupt+0x108/0x410 arch/x86/kernel/apic/apic.c:1056 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__futex_unqueue+0x4/0x160 kernel/futex/core.c:853 Code: 03 00 00 00 5b 41 5e 5d e9 09 5d 15 03 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 <55> 41 57 41 56 41 55 41 54 53 48 89 fb 48 bd 00 00 00 00 00 fc ff RSP: 0018:ffffc9001b7b7ba0 EFLAGS: 00000293 RAX: ffffffff81b3e90a RBX: ffff8880788d5a00 RCX: ffff8880222fda00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffc9001b77faa0 RBP: ffff8880788d5a28 R08: ffff8880788d5a2b R09: 1ffff1100f11ab45 R10: dffffc0000000000 R11: ffffed100f11ab46 R12: ffffc9001b77faa0 R13: ffffc9001b77fb08 R14: dffffc0000000000 R15: ffffc9001b7b7c80 __futex_wake_mark kernel/futex/waitwake.c:115 [inline] futex_wake_mark+0xe2/0x200 kernel/futex/waitwake.c:140 futex_wake+0x3b8/0x560 kernel/futex/waitwake.c:191 do_futex+0x395/0x420 kernel/futex/syscalls.c:107 __do_sys_futex kernel/futex/syscalls.c:179 [inline] __se_sys_futex+0x36f/0x400 kernel/futex/syscalls.c:160 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f81bd58eba9 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:00007f81be4940e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007f81bd7d5fa8 RCX: 00007f81bd58eba9 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f81bd7d5fac RBP: 00007f81bd7d5fa0 R08: 7fffffffffffffff R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f81bd7d6038 R14: 00007ffff0853850 R15: 00007ffff0853938