------------[ cut here ]------------
WARNING: CPU: 0 PID: 29668 at kernel/rcu/tree_stall.h:826 rcu_check_gp_start_stall.part.0+0x325/0x4b0 kernel/rcu/tree_stall.h:818
Modules linked in:
CPU: 0 PID: 29668 Comm: syz-executor.2 Not tainted 5.13.0-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:826
Code: 0f 88 fa 00 00 00 be 04 00 00 00 48 c7 c7 e0 54 9e 90 e8 de a3 59 00 b8 01 00 00 00 87 05 93 c2 3c 0f 85 c0 0f 85 c9 00 00 00 <0f> 0b 48 81 fd c0 46 18 8c 48 c7 c3 cc 3a eb 8d 74 58 48 b8 00 00
RSP: 0018:ffffc90000007e30 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000100025188 RCX: ffffffff81619242
RDX: fffffbfff213ca9c RSI: 0000000000000004 RDI: ffffffff909e54e0
RBP: ffffffff8c1846c0 R08: 0000000000000001 R09: 0000000000000003
R10: fffffbfff213ca9c R11: 1ffff11017386d36 R12: 1ffffffff17c1e30
R13: 0000000000000246 R14: ffff8880b9c368d2 R15: 0000000000000001
FS:  00007faba5442700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007faba5421718 CR3: 000000001da8e000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_check_gp_start_stall kernel/rcu/tree_stall.h:789 [inline]
 rcu_core+0x4df/0x1380 kernel/rcu/tree.c:2788
 __do_softirq+0x29b/0x9bd 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:6328
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 62 d6 2d f8 e8 5d 01 5a f8 fb bf 01 00 00 00 <e8> b2 cd ff ff 9c 58 fa f6 c4 02 75 27 bf 01 00 00 00 e8 70 c5 2d
RSP: 0018:ffffc900015af4c8 EFLAGS: 00000206
RAX: 0000000000001eb1 RBX: ffff888038243880 RCX: 1ffffffff2099f22
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffed1007048710 R08: 0000000000000001 R09: ffffffff9049593f
R10: 0000000000000001 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:check_kcov_mode kernel/kcov.c:163 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x1c/0x60 kernel/kcov.c:197
Code: 8b 45 00 48 63 c9 e9 64 ff ff ff 0f 1f 00 65 8b 05 39 6b 8c 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 00 f0 01 00 <a9> 00 01 ff 00 74 0e 85 c9 74 35 8b 82 34 15 00 00 85 c0 74 2b 8b
RSP: 0018:ffffc900015af598 EFLAGS: 00000246
RAX: 0000000080000000 RBX: 0000000000000010 RCX: 0000000000000000
RDX: ffff888038243880 RSI: ffffffff839b0f48 RDI: 0000000000000003
RBP: ffff888147155000 R08: 0000000000000000 R09: 0000000000000010
R10: ffffffff839b117a R11: 0000000000000010 R12: 0000000000000100
R13: 00000000000003f9 R14: dffffc0000000000 R15: 0000000000000000
 tomoyo_domain_quota_is_ok+0xf8/0x550 security/tomoyo/util.c:1054
 tomoyo_supervisor+0x2f2/0xf00 security/tomoyo/common.c:2089
 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline]
 tomoyo_path_permission security/tomoyo/file.c:587 [inline]
 tomoyo_path_permission+0x270/0x3a0 security/tomoyo/file.c:573
 tomoyo_check_open_permission+0x30f/0x380 security/tomoyo/file.c:780
 tomoyo_file_open security/tomoyo/tomoyo.c:311 [inline]
 tomoyo_file_open+0xa3/0xd0 security/tomoyo/tomoyo.c:306
 security_file_open+0x52/0x4f0 security/security.c:1633
 do_dentry_open+0x353/0x11c0 fs/open.c:813
 do_open fs/namei.c:3361 [inline]
 path_openat+0x1c0e/0x27e0 fs/namei.c:3494
 do_filp_open+0x190/0x3d0 fs/namei.c:3521
 do_sys_openat2+0x16d/0x420 fs/open.c:1195
 do_sys_open fs/open.c:1211 [inline]
 __do_sys_openat fs/open.c:1227 [inline]
 __se_sys_openat fs/open.c:1222 [inline]
 __x64_sys_openat+0x13f/0x1f0 fs/open.c:1222
 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: 0033:0x4665d9
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:00007faba5442188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9
RDX: 0000000000007a05 RSI: 0000000020000140 RDI: ffffffffffffff9c
RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001700 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffe9478bd5f R14: 00007faba5442300 R15: 0000000000022000