rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-....: (1 ticks this GP) idle=7014/1/0x4000000000000000 softirq=25002/25002 fqs=5247 rcu: hardirqs softirqs csw/system rcu: number: 12566820 0 0 rcu: cputime: 4868 47649 0 ==> 52500(ms) rcu: (detected by 0, t=10502 jiffies, g=26901, q=869 ncpus=2) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 8593 Comm: syz.3.2509 Not tainted 6.6.102-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:asm_exc_int3+0x0/0x40 arch/x86/include/asm/idtentry.h:607 Code: e9 05 07 00 00 90 90 90 90 90 f3 0f 1e fa 0f 01 ca fc 6a ff e8 01 06 00 00 48 89 c4 48 89 e7 e8 16 fa ec ff e9 e1 06 00 00 90 0f 1e fa 0f 01 ca fc 6a ff f6 44 24 10 03 75 18 ff 74 24 28 ff RSP: 0018:ffffc900001effb8 EFLAGS: 00000802 RAX: f2f2f200f1f1f1f1 RBX: 0000000000000001 RCX: ffff888025a4bc00 RDX: 0000000000000100 RSI: ffffffff813c0bcc RDI: ffffffff8cd2fca0 RBP: ffffc900001f00f0 R08: dffffc0000000000 R09: 1ffffffff21b46a0 R10: dffffc0000000000 R11: fffffbfff21b46a1 R12: ffffffff813c0bcc R13: dffffc0000000000 R14: ffffffff813c0bcc R15: 1ffff9200003e008 FS: 0000555585fc8500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2de63fff CR3: 0000000029504000 CR4: 00000000003506e0 Call Trace: RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline] RIP: 0010:static_key_false include/linux/jump_label.h:207 [inline] RIP: 0010:trace_lock_release include/trace/events/lock.h:69 [inline] RIP: 0010:lock_release+0x80/0x8b0 kernel/locking/lockdep.c:5765 Code: 60 80 67 81 4c 8d 7c 24 60 49 c1 ef 03 48 b8 f1 f1 f1 f1 00 f2 f2 f2 4b 89 04 2f 66 43 c7 44 2f 09 f3 f3 43 c6 44 2f 0b f3 cc <1f> 44 00 00 65 8b 05 21 39 9c 7e 83 f8 08 0f 83 24 05 00 00 89 c3 RSP: 0018:ffffc900001effe0 EFLAGS: 00000802 rcu_lock_release include/linux/rcupdate.h:344 [inline] rcu_read_unlock_sched include/linux/rcupdate.h:899 [inline] pfn_valid include/linux/mmzone.h:2021 [inline] __virt_addr_valid+0x439/0x540 arch/x86/mm/physaddr.c:65 kasan_addr_to_slab+0xd/0xd0 mm/kasan/common.c:35 __kasan_record_aux_stack+0xf/0xc0 mm/kasan/generic.c:477 irq_work_queue_on+0xf5/0x220 kernel/irq_work.c:150 rcu_read_unlock_special+0x3a7/0x4c0 kernel/rcu/tree_plugin.h:675 __rcu_read_unlock+0x7c/0xd0 kernel/rcu/tree_plugin.h:426 rcu_read_unlock include/linux/rcupdate.h:818 [inline] __perf_event_output kernel/events/core.c:7983 [inline] perf_event_output_forward+0x2e6/0x3a0 kernel/events/core.c:7992 __perf_event_overflow+0x447/0x630 kernel/events/core.c:9717 perf_swevent_overflow kernel/events/core.c:9793 [inline] perf_swevent_event+0x2f5/0x5c0 kernel/events/core.c:-1 perf_tp_event+0x4f9/0x13a0 kernel/events/core.c:10343 perf_trace_run_bpf_submit+0xf4/0x1c0 kernel/events/core.c:10267 perf_trace_preemptirq_template+0x281/0x340 include/trace/events/preemptirq.h:14 trace_irq_enable+0xbf/0xe0 include/trace/events/preemptirq.h:40 trace_hardirqs_on+0x18/0x40 kernel/trace/trace_preemptirq.c:56 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:723 RIP: 0010:rcu_read_unlock_special+0x88/0x4c0 kernel/rcu/tree_plugin.h:682 Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 39 58 93 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b RSP: 0018:ffffc900001f09c0 EFLAGS: 00000206 RAX: d386de256f90ed00 RBX: 1ffff9200003e140 RCX: d386de256f90ed00 RDX: dffffc0000000000 RSI: ffffffff8aaab9c0 RDI: ffffffff8afc66c0 RBP: ffffc900001f0ac0 R08: ffffffff90da35ff R09: 1ffffffff21b46bf R10: dffffc0000000000 R11: fffffbfff21b46c0 R12: ffffffff8cd35400 R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002 __rcu_read_unlock+0x7c/0xd0 kernel/rcu/tree_plugin.h:426 rcu_read_unlock include/linux/rcupdate.h:818 [inline] hsr_announce+0x2c8/0x340 net/hsr/hsr_device.c:384 call_timer_fn+0x16e/0x530 kernel/time/timer.c:1700 expire_timers kernel/time/timer.c:1751 [inline] __run_timers+0x52d/0x7d0 kernel/time/timer.c:2022 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2035 handle_softirqs+0x280/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xc7/0x190 kernel/softirq.c:661 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:smp_call_function_many_cond+0xcbd/0x1130 kernel/smp.c:850 Code: e8 58 d4 0a 00 0f 0b e9 77 f8 ff ff e8 4c d4 0a 00 e8 57 91 f2 08 48 85 db 0f 84 c1 fe ff ff e8 39 d4 0a 00 fb 83 7c 24 5c 00 <0f> 84 9e 01 00 00 44 39 a4 24 80 00 00 00 0f 83 90 01 00 00 4d 8d RSP: 0018:ffffc900039277c0 EFLAGS: 00000202 RAX: ffffffff817ab6e7 RBX: 0000000000000200 RCX: ffff888025a4bc00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90003927940 R08: ffffffff90da3507 R09: 1ffffffff21b46a0 R10: dffffc0000000000 R11: fffffbfff21b46a1 R12: 0000000000000002 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880b8f3d580 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1023 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:2222 [inline] text_poke_bp_batch+0x617/0x930 arch/x86/kernel/alternative.c:2494 text_poke_flush arch/x86/kernel/alternative.c:2623 [inline] text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2630 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_disable_cpuslocked+0xc5/0x1a0 kernel/jump_label.c:237 static_key_disable+0x1a/0x20 kernel/jump_label.c:245 tracepoint_remove_func kernel/tracepoint.c:417 [inline] tracepoint_probe_unregister+0x6ad/0x930 kernel/tracepoint.c:551 trace_event_reg+0x153/0x260 kernel/trace/trace_events.c:-1 perf_trace_event_unreg+0xb3/0x1b0 kernel/trace/trace_event_perf.c:162 perf_trace_destroy+0x9e/0x140 kernel/trace/trace_event_perf.c:241 _free_event+0xb73/0xf30 kernel/events/core.c:5279 put_event kernel/events/core.c:5376 [inline] perf_event_release_kernel+0x836/0x8c0 kernel/events/core.c:5501 perf_release+0x3b/0x40 kernel/events/core.c:5511 __fput+0x234/0x970 fs/file_table.c:384 task_work_run+0x1ce/0x250 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f434e58ebe9 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:00007ffe91a1c7d8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 0000000000024e83 RCX: 00007f434e58ebe9 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000491a1cacf R10: 0000001b2d220000 R11: 0000000000000246 R12: 00007f434e7b5fac R13: 00007f434e7b5fa0 R14: ffffffffffffffff R15: 0000000000000003