rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2627 jiffies s: 40641 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 11476 Comm: syz.2.1982 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:strlen+0x3b/0x60 lib/string.c:502
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 2d ed
RSP: 0018:ffffc900001e02b8 EFLAGS: 00000002
RAX: 000000000000000c RBX: ffffffff8a8d294d RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8cb2d6a0 RDI: ffffffff8a8d2940
RBP: ffffc900001e03e0 R08: 0000000000000002 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1c3fe86 R12: dffffc0000000000
R13: 1ffff9200003c08c R14: dffffc0000000000 R15: 000000000000000b
FS:  00007fa4b10c86c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa4b1086d58 CR3: 0000000077769000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __fortify_strlen include/linux/fortify-string.h:196 [inline]
 trace_event_get_offsets_lock_acquire include/trace/events/lock.h:24 [inline]
 perf_trace_lock_acquire+0xd9/0x3e0 include/trace/events/lock.h:24
 trace_lock_acquire include/trace/events/lock.h:24 [inline]
 lock_acquire+0x452/0x4a0 kernel/locking/lockdep.c:5633
 rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 rcu_read_lock_sched include/linux/rcupdate.h:883 [inline]
 pfn_valid include/linux/mmzone.h:1857 [inline]
 __virt_addr_valid+0x1a5/0x540 arch/x86/mm/physaddr.c:65
 kasan_addr_to_slab+0x9/0xc0 mm/kasan/common.c:36
 __kasan_record_aux_stack+0xf/0xc0 mm/kasan/generic.c:471
 irq_work_queue_on+0x10f/0x260 kernel/irq_work.c:140
 rcu_read_unlock_special+0x3c9/0x510 kernel/rcu/tree_plugin.h:678
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 trace_call_bpf+0x5bb/0x6b0 kernel/trace/bpf_trace.c:137
 perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:10027
 perf_trace_preemptirq_template+0x268/0x320 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0xd3/0x140 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:trace_lock_release include/trace/events/lock.h:69 [inline]
RIP: 0010:lock_release+0xca/0x920 kernel/locking/lockdep.c:5673
Code: bb 0c 0f 83 3a 05 00 00 41 89 de c1 eb 06 48 8d 3c dd 28 f4 1f 8e be 08 00 00 00 e8 20 c3 6e 00 4c 0f a3 35 20 34 bb 0c 73 0d <e8> c1 af 07 00 84 c0 0f 84 41 05 00 00 48 c7 c0 e4 28 20 8e 48 c1
RSP: 0018:ffffc900001e0a20 EFLAGS: 00000257
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff8164c000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e1ff428
RBP: ffffc900001e0b30 R08: ffffffff8e1ff42f R09: 1ffffffff1c3fe85
R10: dffffc0000000000 R11: fffffbfff1c3fe86 R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000000001 R15: 1ffff9200003c150
 __raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline]
 _raw_spin_unlock+0x12/0x40 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 mrp_join_timer+0x7e/0x170 net/802/mrp.c:606
 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x53e/0x800 kernel/time/timer.c:2023
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x2a1/0x930 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:trace_contention_begin+0x5a/0x170 include/trace/events/lock.h:95
Code: 3b 1d 8a 5e bc 0c 73 35 41 89 de c1 eb 06 48 8d 3c dd 28 f4 1f 8e be 08 00 00 00 e8 60 eb 6f 00 4c 0f a3 35 60 5c bc 0c 73 09 <e8> 01 d8 08 00 84 c0 74 0e 5b 41 5c 41 5d 41 5e 41 5f c3 0f 0b eb
RSP: 0018:ffffc90003487930 EFLAGS: 00000257
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff816397c0
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e1ff428
RBP: ffffc90003487ac0 R08: ffffffff8e1ff42f R09: 1ffffffff1c3fe85
R10: dffffc0000000000 R11: fffffbfff1c3fe86 R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000
 __mutex_lock_common kernel/locking/mutex.c:605 [inline]
 __mutex_lock+0x13e/0xaf0 kernel/locking/mutex.c:747
 jump_label_lock kernel/jump_label.c:27 [inline]
 static_key_enable_cpuslocked+0xc2/0x240 kernel/jump_label.c:204
 static_key_enable+0x16/0x20 kernel/jump_label.c:220
 tracepoint_add_func+0x907/0x990 kernel/tracepoint.c:361
 tracepoint_probe_register_prio kernel/tracepoint.c:511 [inline]
 tracepoint_probe_register+0x5a/0x90 kernel/tracepoint.c:531
 perf_trace_event_reg kernel/trace/trace_event_perf.c:129 [inline]
 perf_trace_event_init+0x420/0x940 kernel/trace/trace_event_perf.c:202
 perf_trace_init+0x234/0x2d0 kernel/trace/trace_event_perf.c:226
 perf_tp_event_init+0x89/0x110 kernel/events/core.c:10119
 perf_try_init_event+0x12b/0x3d0 kernel/events/core.c:11634
 perf_init_event kernel/events/core.c:11698 [inline]
 perf_event_alloc+0xf5c/0x21b0 kernel/events/core.c:11990
 __do_sys_perf_event_open kernel/events/core.c:12526 [inline]
 __se_sys_perf_event_open+0x6fd/0x1ec0 kernel/events/core.c:12418
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa4b019c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa4b10c8028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fa4b0415fa0 RCX: 00007fa4b019c819
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140
RBP: 00007fa4b0232c91 R08: 0000000000000001 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa4b0416038 R14: 00007fa4b0415fa0 R15: 00007fff45b3d2f8
 </TASK>