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BUG: KCSAN: data-race in tomoyo_check_acl / tomoyo_update_domain

write to 0xffff8880a1ef2418 of 1 bytes by task 7288 on cpu 1:
 tomoyo_update_domain+0x32f/0x450 security/tomoyo/domain.c:129
 tomoyo_update_path_acl security/tomoyo/file.c:398 [inline]
 tomoyo_write_file+0x34e/0x580 security/tomoyo/file.c:1022
 tomoyo_write_domain2+0xad/0x120 security/tomoyo/common.c:1150
 tomoyo_add_entry security/tomoyo/common.c:2040 [inline]
 tomoyo_supervisor+0xad7/0xd20 security/tomoyo/common.c:2101
 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline]
 tomoyo_path_permission security/tomoyo/file.c:587 [inline]
 tomoyo_path_permission+0x121/0x160 security/tomoyo/file.c:573
 tomoyo_path_perm+0x352/0x390 security/tomoyo/file.c:838
 tomoyo_path_rmdir+0x63/0x90 security/tomoyo/tomoyo.c:189
 security_path_rmdir+0xa3/0xd0 security/security.c:1037
 do_rmdir+0x227/0x300 fs/namei.c:3929
 __do_sys_unlinkat fs/namei.c:4095 [inline]
 __se_sys_unlinkat fs/namei.c:4089 [inline]
 __x64_sys_unlinkat+0xb6/0xd0 fs/namei.c:4089
 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff8880a1ef2418 of 1 bytes by task 7283 on cpu 0:
 tomoyo_check_acl+0x98/0x270 security/tomoyo/domain.c:170
 tomoyo_path_permission security/tomoyo/file.c:586 [inline]
 tomoyo_path_permission+0xe3/0x160 security/tomoyo/file.c:573
 tomoyo_path_perm+0x23e/0x390 security/tomoyo/file.c:838
 tomoyo_path_unlink+0x63/0x90 security/tomoyo/tomoyo.c:156
 security_path_unlink+0xa3/0xd0 security/security.c:1044
 do_unlinkat+0x2f1/0x530 fs/namei.c:4052
 __do_sys_unlinkat fs/namei.c:4097 [inline]
 __se_sys_unlinkat fs/namei.c:4089 [inline]
 __x64_sys_unlinkat+0x8d/0xd0 fs/namei.c:4089
 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 7283 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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