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BUG: KCSAN: data-race in inode_permission / inode_permission

write to 0xffff88813ee4631a of 2 bytes by task 1 on cpu 1:
 do_inode_permission fs/namei.c:450 [inline]
 inode_permission+0x258/0x290 fs/namei.c:513
 may_lookup fs/namei.c:1655 [inline]
 link_path_walk+0x17d/0x780 fs/namei.c:2211
 path_lookupat+0x7b/0x570 fs/namei.c:2420
 filename_lookup+0xff/0x390 fs/namei.c:2454
 user_path_at_empty+0x3b/0x50 fs/namei.c:2734
 user_path_at include/linux/namei.h:60 [inline]
 vfs_statx+0x98/0x290 fs/stat.c:203
 vfs_fstatat fs/stat.c:225 [inline]
 vfs_stat include/linux/fs.h:3382 [inline]
 __do_sys_newstat fs/stat.c:367 [inline]
 __se_sys_newstat+0x46/0x250 fs/stat.c:363
 __x64_sys_newstat+0x2d/0x40 fs/stat.c:363
 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff88813ee4631a of 2 bytes by task 15190 on cpu 0:
 do_inode_permission fs/namei.c:444 [inline]
 inode_permission+0x3e/0x290 fs/namei.c:513
 may_lookup fs/namei.c:1655 [inline]
 link_path_walk+0x17d/0x780 fs/namei.c:2211
 path_parentat fs/namei.c:2473 [inline]
 filename_parentat+0x104/0x950 fs/namei.c:2495
 filename_create+0x58/0x3c0 fs/namei.c:3575
 user_path_create fs/namei.c:3650 [inline]
 do_symlinkat+0x67/0x280 fs/namei.c:4192
 __do_sys_symlink fs/namei.c:4223 [inline]
 __se_sys_symlink fs/namei.c:4221 [inline]
 __x64_sys_symlink+0x32/0x40 fs/namei.c:4221
 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 15190 Comm: systemd-udevd Not tainted 5.12.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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