------------[ cut here ]------------
WARNING: CPU: 0 PID: 2426 at kernel/rcu/tree_stall.h:990 rcu_check_gp_start_stall+0x2cf/0x460 kernel/rcu/tree_stall.h:990
Modules linked in:
CPU: 0 PID: 2426 Comm: kworker/u8:7 Not tainted 6.9.0-rc5-syzkaller-00184-gba1cb99b559e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:rcu_check_gp_start_stall+0x2cf/0x460 kernel/rcu/tree_stall.h:990
Code: c7 60 f6 76 94 be 04 00 00 00 e8 cc 79 7d 00 b8 01 00 00 00 87 05 31 00 fa 12 85 c0 0f 85 1a ff ff ff 48 c7 c0 40 99 33 8e 90 <0f> 0b 90 49 39 c7 74 47 48 c7 c0 fc 30 a9 8f 48 c1 e8 03 42 0f b6
RSP: 0018:ffffc90000007bd8 EFLAGS: 00010046
RAX: ffffffff8e339940 RBX: 00000000ffffe566 RCX: ffffffff817cf624
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff9476f660
RBP: ffffc90000007e30 R08: 0000000000000003 R09: fffffbfff28edecc
R10: dffffc0000000000 R11: fffffbfff28edecc R12: dffffc0000000000
R13: ffff8880b943f580 R14: 0000000000000246 R15: ffffffff8e339940
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1a928e62d0 CR3: 000000000e134000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rcu_core+0x694/0x1830 kernel/rcu/tree.c:2466
 __do_softirq+0x2c6/0x980 kernel/softirq.c:554
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:645
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:smp_call_function_many_cond+0x18ac/0x2a00 kernel/smp.c:855
Code: 00 00 00 00 fc ff df 75 07 e8 c0 d6 0b 00 eb 38 f3 90 42 0f b6 04 23 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 a4 d6 0b 00 <eb> e4 44 89 e9 80 e1 07 80 c1 03 38 c1 7c e2 4c 89 ef e8 ad 43 70
RSP: 0018:ffffc90009ec76e0 EFLAGS: 00000293
RAX: ffffffff818a295c RBX: 1ffff110172a8869 RCX: ffff888029a75a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90009ec78e0 R08: ffffffff818a292b R09: 1ffffffff25e6aa0
R10: dffffc0000000000 R11: fffffbfff25e6aa1 R12: dffffc0000000000
R13: ffff8880b9544348 R14: ffff8880b943f7c0 R15: 0000000000000001
 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:2086 [inline]
 text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2296
 text_poke_flush arch/x86/kernel/alternative.c:2487 [inline]
 text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2494
 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
 static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:205
 static_key_enable+0x1a/0x20 kernel/jump_label.c:218
 toggle_allocation_gate+0xb5/0x250 mm/kfence/core.c:826
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_works+0xa10/0x17c0 kernel/workqueue.c:3335
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416
 kthread+0x2f0/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
----------------
Code disassembly (best guess), 6 bytes skipped:
   0:	df 75 07             	fbstp  0x7(%rbp)
   3:	e8 c0 d6 0b 00       	call   0xbd6c8
   8:	eb 38                	jmp    0x42
   a:	f3 90                	pause
   c:	42 0f b6 04 23       	movzbl (%rbx,%r12,1),%eax
  11:	84 c0                	test   %al,%al
  13:	75 11                	jne    0x26
  15:	41 f7 45 00 01 00 00 	testl  $0x1,0x0(%r13)
  1c:	00
  1d:	74 1e                	je     0x3d
  1f:	e8 a4 d6 0b 00       	call   0xbd6c8
* 24:	eb e4                	jmp    0xa <-- trapping instruction
  26:	44 89 e9             	mov    %r13d,%ecx
  29:	80 e1 07             	and    $0x7,%cl
  2c:	80 c1 03             	add    $0x3,%cl
  2f:	38 c1                	cmp    %al,%cl
  31:	7c e2                	jl     0x15
  33:	4c 89 ef             	mov    %r13,%rdi
  36:	e8                   	.byte 0xe8
  37:	ad                   	lods   %ds:(%rsi),%eax
  38:	43                   	rex.XB
  39:	70                   	.byte 0x70