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BUG: KCSAN: data-race in tomoyo_supervisor / tomoyo_supervisor

write to 0xffffffff883bac78 of 8 bytes by task 4893 on cpu 1:
 tomoyo_update_stat security/tomoyo/common.c:2340 [inline]
 tomoyo_supervisor+0x176/0xb20 security/tomoyo/common.c:2079
 tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline]
 tomoyo_path_number_perm+0x227/0x2d0 security/tomoyo/file.c:734
 tomoyo_file_ioctl+0x1c/0x20 security/tomoyo/tomoyo.c:329
 security_file_ioctl+0x45/0x90 security/security.c:1481
 __do_sys_ioctl fs/ioctl.c:747 [inline]
 __se_sys_ioctl+0x48/0x140 fs/ioctl.c:739
 __x64_sys_ioctl+0x3f/0x50 fs/ioctl.c:739
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

write to 0xffffffff883bac78 of 8 bytes by task 13698 on cpu 0:
 tomoyo_update_stat security/tomoyo/common.c:2340 [inline]
 tomoyo_supervisor+0x176/0xb20 security/tomoyo/common.c:2079
 tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline]
 tomoyo_path_number_perm+0x227/0x2d0 security/tomoyo/file.c:734
 tomoyo_path_mknod+0xe0/0x100 security/tomoyo/tomoyo.c:240
 security_path_mknod+0x98/0xf0 security/security.c:1078
 may_o_create fs/namei.c:2928 [inline]
 lookup_open fs/namei.c:3069 [inline]
 open_last_lookups fs/namei.c:3178 [inline]
 path_openat+0x835/0x20a0 fs/namei.c:3366
 do_filp_open+0xbd/0x1d0 fs/namei.c:3396
 do_sys_openat2+0xa3/0x240 fs/open.c:1168
 do_sys_open fs/open.c:1184 [inline]
 __do_sys_open fs/open.c:1192 [inline]
 __se_sys_open fs/open.c:1188 [inline]
 __x64_sys_open+0xe2/0x110 fs/open.c:1188
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 13698 Comm: systemd-udevd Not tainted 5.10.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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