------------[ cut here ]------------
WARNING: CPU: 0 PID: 11556 at kernel/rcu/tree_stall.h:1050 rcu_check_gp_start_stall+0x2e4/0x470 kernel/rcu/tree_stall.h:1050
Modules linked in:
CPU: 0 UID: 0 PID: 11556 Comm: syz.2.1446 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:rcu_check_gp_start_stall+0x2e4/0x470 kernel/rcu/tree_stall.h:1050
Code: ff ff 48 c7 c7 20 64 b0 99 be 04 00 00 00 e8 23 da 7c 00 4c 89 f7 b8 01 00 00 00 87 05 55 5b 09 18 85 c0 0f 85 17 ff ff ff 90 <0f> 0b 90 48 81 ff 40 f4 13 8e 74 47 48 c7 c0 60 e5 a3 8f 48 c1 e8
RSP: 0018:ffffc90000007bb8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000a02 RCX: ffffffff81a708bd
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8e13f440
RBP: ffffc90000007e30 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff3360c84 R12: 0000000000002904
R13: 1ffff110170c75f2 R14: ffffffff8e13f440 R15: dffffc0000000000
FS:  00007f9ccf3eb6c0(0000) GS:ffff888125c12000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3544c4 CR3: 0000000028a3a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_core+0x5fa/0x1770 kernel/rcu/tree.c:2856
 handle_softirqs+0x283/0x870 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
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 b6 63 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 61 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 45 5f 0b 00 eb e4 44
RSP: 0018:ffffc90004abf600 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff110170e7f61 RCX: 0000000000080000
RDX: ffffc9000d53d000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc90004abf780 R08: ffffffff8fa3b437 R09: 1ffffffff1f47686
R10: dffffc0000000000 R11: fffffbfff1f47687 R12: ffff8880b873fb08
R13: dffffc0000000000 R14: ffff8880b863b1c0 R15: 0000000000000001
 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+0xb44/0x1130 arch/x86/kernel/alternative.c:2925
 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
 tracepoint_add_func+0x994/0xa10 kernel/tracepoint.c:315
 tracepoint_probe_register_prio kernel/tracepoint.c:464 [inline]
 tracepoint_probe_register+0x5d/0x90 kernel/tracepoint.c:484
 perf_trace_event_reg kernel/trace/trace_event_perf.c:129 [inline]
 perf_trace_event_init+0x4de/0x9d0 kernel/trace/trace_event_perf.c:202
 perf_trace_init+0x23d/0x2d0 kernel/trace/trace_event_perf.c:226
 perf_tp_event_init+0x8d/0x120 kernel/events/core.c:10859
 perf_try_init_event+0x17f/0x870 kernel/events/core.c:12588
 perf_init_event kernel/events/core.c:12686 [inline]
 perf_event_alloc+0x133e/0x2be0 kernel/events/core.c:12961
 __do_sys_perf_event_open kernel/events/core.c:13479 [inline]
 __se_sys_perf_event_open+0x772/0x1d70 kernel/events/core.c:13360
 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: 0033:0x7f9cce58eec9
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:00007f9ccf3eb038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f9cce7e5fa0 RCX: 00007f9cce58eec9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000180
RBP: 00007f9cce611f91 R08: 000000000000000a R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9cce7e6038 R14: 00007f9cce7e5fa0 R15: 00007ffdc3c398c8
 </TASK>
----------------
Code disassembly (best guess):
   0:	89 ee                	mov    %ebp,%esi
   2:	83 e6 01             	and    $0x1,%esi
   5:	31 ff                	xor    %edi,%edi
   7:	e8 b6 63 0b 00       	call   0xb63c2
   c:	41 83 e5 01          	and    $0x1,%r13d
  10:	49 bd 00 00 00 00 00 	movabs $0xdffffc0000000000,%r13
  17:	fc ff df
  1a:	75 07                	jne    0x23
  1c:	e8 61 5f 0b 00       	call   0xb5f82
  21:	eb 38                	jmp    0x5b
  23:	f3 90                	pause
  25:	42 0f b6 04 2b       	movzbl (%rbx,%r13,1),%eax
* 2a:	84 c0                	test   %al,%al <-- trapping instruction
  2c:	75 11                	jne    0x3f
  2e:	41 f7 04 24 01 00 00 	testl  $0x1,(%r12)
  35:	00
  36:	74 1e                	je     0x56
  38:	e8 45 5f 0b 00       	call   0xb5f82
  3d:	eb e4                	jmp    0x23
  3f:	44                   	rex.R