------------[ cut here ]------------
WARNING: CPU: 0 PID: 426 at kernel/rcu/tree_stall.h:894 rcu_check_gp_start_stall.part.0+0x325/0x4b0 kernel/rcu/tree_stall.h:886
Modules linked in:
CPU: 0 PID: 426 Comm: syz-executor.5 Not tainted 5.14.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:rcu_check_gp_start_stall.part.0+0x325/0x4b0 kernel/rcu/tree_stall.h:894
Code: 0f 88 fa 00 00 00 be 04 00 00 00 48 c7 c7 a0 25 24 90 e8 5e a4 5a 00 b8 01 00 00 00 87 05 63 77 c2 0e 85 c0 0f 85 c9 00 00 00 <0f> 0b 48 81 fd c0 50 98 8b 48 c7 c3 ac c4 6c 8d 74 58 48 b8 00 00
RSP: 0018:ffffc90000007e30 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 000000010002781e RCX: ffffffff8161ae32
RDX: fffffbfff20484b4 RSI: 0000000000000004 RDI: ffffffff902425a0
RBP: ffffffff8b9850c0 R08: 0000000000000001 R09: 0000000000000003
R10: fffffbfff20484b4 R11: 1ffff1101738a526 R12: 1ffffffff16c1e30
R13: 0000000000000246 R14: ffff8880b9c52852 R15: 0000000000000001
FS:  00007f566b131700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000004 CR3: 000000008ac31000 CR4: 00000000001506f0
DR0: feffffff00000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_check_gp_start_stall kernel/rcu/tree_stall.h:857 [inline]
 rcu_core+0x4df/0x1380 kernel/rcu/tree.c:2780
 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x16e/0x1c0 kernel/softirq.c:636
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:preempt_schedule_irq+0x49/0x90 kernel/sched/core.c:6326
Code: 55 53 65 48 8b 1c 25 00 f0 01 00 48 89 dd 48 c1 ed 03 48 01 c5 bf 01 00 00 00 e8 92 26 20 f8 e8 dd 70 4c f8 fb bf 01 00 00 00 <e8> d2 cd ff ff 9c 58 fa f6 c4 02 75 27 bf 01 00 00 00 e8 a0 15 20
RSP: 0018:ffffc9000230faf8 EFLAGS: 00000206
RAX: 0000000000139495 RBX: ffff88807802b880 RCX: 1ffffffff1ad8cc1
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffed100f005710 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817bd258 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 irqentry_exit+0x31/0x80 kernel/entry/common.c:427
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:tomoyo_compare_number_union security/tomoyo/file.c:115 [inline]
RIP: 0010:tomoyo_check_path_number_acl+0xfe/0x320 security/tomoyo/file.c:282
Code: 00 00 48 8d 7d 40 4d 8b 6c 24 20 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 cb 01 00 00 4c 8b 75 40 <4d> 85 f6 0f 85 12 01 00 00 e8 74 15 d7 fd 48 8d 7d 30 48 b8 00 00
RSP: 0018:ffffc9000230fbc0 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc90014aa1000
RDX: 1ffff110068ad078 RSI: ffffffff839e93e6 RDI: ffff8880345683c0
RBP: ffff888034568380 R08: 0000000000000000 R09: 0000000000000004
R10: ffffffff839e93c9 R11: 000000000000001f R12: ffffc9000230fcb8
R13: 0000000000002402 R14: 0000000000000000 R15: 0000000000000002
 tomoyo_check_acl+0x13c/0x450 security/tomoyo/domain.c:175
 tomoyo_path_number_perm+0x32a/0x590 security/tomoyo/file.c:733
 security_file_ioctl+0x50/0xb0 security/security.c:1540
 __do_sys_ioctl fs/ioctl.c:1063 [inline]
 __se_sys_ioctl fs/ioctl.c:1055 [inline]
 __x64_sys_ioctl+0xb3/0x200 fs/ioctl.c:1055
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f566b131188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9
RDX: 0000000000000e43 RSI: 0000000000002402 RDI: 0000000000000005
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffde1fe241f R14: 00007f566b131300 R15: 0000000000022000
----------------
Code disassembly (best guess):
   0:	0f 88 fa 00 00 00    	js     0x100
   6:	be 04 00 00 00       	mov    $0x4,%esi
   b:	48 c7 c7 a0 25 24 90 	mov    $0xffffffff902425a0,%rdi
  12:	e8 5e a4 5a 00       	callq  0x5aa475
  17:	b8 01 00 00 00       	mov    $0x1,%eax
  1c:	87 05 63 77 c2 0e    	xchg   %eax,0xec27763(%rip)        # 0xec27785
  22:	85 c0                	test   %eax,%eax
  24:	0f 85 c9 00 00 00    	jne    0xf3
  2a:	0f 0b                	ud2     <-- trapping instruction
  2c:	48 81 fd c0 50 98 8b 	cmp    $0xffffffff8b9850c0,%rbp
  33:	48 c7 c3 ac c4 6c 8d 	mov    $0xffffffff8d6cc4ac,%rbx
  3a:	74 58                	je     0x94
  3c:	48                   	rex.W
  3d:	b8                   	.byte 0xb8