watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz.1.2:5346] Modules linked in: irq event stamp: 11171217 hardirqs last enabled at (11171216): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (11171217): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1037 softirqs last enabled at (9664688): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (9664688): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (9664688): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 softirqs last disabled at (9664691): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (9664691): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (9664691): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 CPU: 0 UID: 0 PID: 5346 Comm: syz.1.2 Not tainted 6.11.0-syzkaller-10555-gbcd28cfd04eb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5826 Code: 2b 00 74 08 4c 89 f7 e8 0a 4d 8e 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25 RSP: 0018:ffffc90000007a20 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff92000000f50 RCX: 4f442e739512d800 RDX: dffffc0000000000 RSI: ffffffff8c0adbc0 RDI: ffffffff8c6100a0 RBP: ffffc90000007b68 R08: ffffffff942688a7 R09: 1ffffffff284d114 R10: dffffc0000000000 R11: fffffbfff284d115 R12: 1ffff92000000f4c R13: dffffc0000000000 R14: ffffc90000007a80 R15: 0000000000000246 FS: 00007f692c21f6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3251cff8 CR3: 0000000031ae4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] mrp_join_timer+0x28/0x180 net/802/mrp.c:604 call_timer_fn+0x18e/0x650 kernel/time/timer.c:1794 expire_timers kernel/time/timer.c:1845 [inline] __run_timers kernel/time/timer.c:2419 [inline] __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2430 run_timer_base kernel/time/timer.c:2439 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1037 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:preempt_schedule_irq+0xf6/0x1c0 kernel/sched/core.c:6997 Code: 89 f5 49 c1 ed 03 eb 0d 48 f7 03 08 00 00 00 0f 84 8b 00 00 00 bf 01 00 00 00 e8 d5 9a 96 f5 e8 b0 0c d0 f5 fb bf 01 00 00 00 85 ac ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 35 fd 31 f6 48 RSP: 0018:ffffc9000472f600 EFLAGS: 00000286 RAX: 4f442e739512d800 RBX: 1ffff920008e5ec8 RCX: ffffffff8170892a RDX: dffffc0000000000 RSI: ffffffff8c0aca40 RDI: 0000000000000001 RBP: ffffc9000472f6c0 R08: ffffffff942687c7 R09: 1ffffffff284d0f8 R10: dffffc0000000000 R11: fffffbfff284d0f9 R12: 1ffff920008e5ec0 R13: 1ffff920008e5ec4 R14: ffffc9000472f620 R15: dffffc0000000000 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:210 Code: 89 fb e8 23 00 00 00 48 8b 3d 14 dd 9c 0c 48 89 de 5b e9 63 c7 5d 00 0f 1f 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 c0 d7 03 00 65 8b 15 70 22 RSP: 0018:ffffc9000472f788 EFLAGS: 00000246 RAX: 0000000000000002 RBX: 0000000000000000 RCX: 0000000000000001 RDX: ffff888029af8000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000003 R08: ffffffff8188d3a9 R09: 1ffffffff284d0f8 R10: dffffc0000000000 R11: fffffbfff284d0f9 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff901ce568 on_each_cpu_cond_mask+0x74/0x80 kernel/smp.c:1052 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:2085 [inline] text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2295 text_poke_flush arch/x86/kernel/alternative.c:2486 [inline] text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2493 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 tracepoint_add_func+0x953/0x9e0 kernel/tracepoint.c:361 tracepoint_probe_register_prio kernel/tracepoint.c:511 [inline] tracepoint_probe_register+0x105/0x160 kernel/tracepoint.c:531 perf_trace_event_reg kernel/trace/trace_event_perf.c:129 [inline] perf_trace_event_init+0x478/0x930 kernel/trace/trace_event_perf.c:202 perf_trace_init+0x243/0x2e0 kernel/trace/trace_event_perf.c:226 perf_tp_event_init+0x8d/0x110 kernel/events/core.c:10358 perf_try_init_event+0x146/0x810 kernel/events/core.c:11892 perf_init_event kernel/events/core.c:11978 [inline] perf_event_alloc+0x135f/0x2310 kernel/events/core.c:12260 __do_sys_perf_event_open kernel/events/core.c:12767 [inline] __se_sys_perf_event_open+0xb1f/0x3870 kernel/events/core.c:12658 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f692b37dff9 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:00007f692c21f038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f692b535f80 RCX: 00007f692b37dff9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 00007f692b3f0296 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f692b535f80 R15: 00007ffca76a59a8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 5337 Comm: syz.3.4 Not tainted 6.11.0-syzkaller-10555-gbcd28cfd04eb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:asm_sysvec_irq_work+0x0/0x20 arch/x86/include/asm/idtentry.h:738 Code: b6 13 e4 ff e9 51 05 00 00 90 f3 0f 1e fa 0f 01 ca fc 6a ff e8 01 04 00 00 48 89 c4 48 89 e7 e8 16 f4 e3 ff e9 31 05 00 00 90 0f 1e fa 0f 01 ca fc 6a ff e8 e1 03 00 00 48 89 c4 48 89 e7 e8 RSP: 0018:ffffc90000a18e18 EFLAGS: 00000086 RAX: b8beb60eb6bf8b00 RBX: ffffc90000a18ee0 RCX: ffffffff8170892a RDX: dffffc0000000000 RSI: ffffffff8c0aca40 RDI: ffffffff8c6100a0 RBP: ffffc90000a18f50 R08: ffffffff942687f7 R09: 1ffffffff284d0fe R10: dffffc0000000000 R11: fffffbfff284d0ff R12: 0000000000000200 R13: 0000000000000000 R14: ffffffff8e60a0c0 R15: 1ffff1100535fb40 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc3ff146ff8 CR3: 0000000064374000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: RIP: 0010:variable_ffs arch/x86/include/asm/bitops.h:321 [inline] RIP: 0010:handle_softirqs+0x1e3/0x980 kernel/softirq.c:542 Code: 7c 24 70 45 0f b7 e4 48 c7 c7 60 bf 09 8c e8 a4 0a 6d 0a 65 66 c7 05 62 7e ac 7e 00 00 e8 55 1b 45 00 fb 49 c7 c6 c0 a0 60 8e ff ff ff ff 41 0f bc c4 41 89 c7 41 ff c7 0f 84 eb 03 00 00 44 RSP: 0018:ffffc90000a18e40 EFLAGS: 00000286