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BUG: KCSAN: data-race in dput / select_collect

write to 0xffff88803a3616c0 of 4 bytes by task 23963 on cpu 0:
 d_lru_del fs/dcache.c:410 [inline]
 select_collect+0xaf/0x2a0 fs/dcache.c:1505
 d_walk+0x298/0x4c0 fs/dcache.c:1326
 shrink_dcache_parent+0x85/0x3c0 fs/dcache.c:1565
 d_invalidate+0x70/0x1b0 fs/dcache.c:1677
 lookup_fast+0x2ed/0x370 fs/namei.c:1509
 walk_component+0x5c/0x350 fs/namei.c:1857
 link_path_walk+0x451/0x710 fs/namei.c:2180
 path_openat+0x19f/0x20a0 fs/namei.c:3365
 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

read to 0xffff88803a3616c0 of 4 bytes by task 4889 on cpu 1:
 fast_dput fs/dcache.c:746 [inline]
 dput+0x2f/0x420 fs/dcache.c:865
 path_put+0x1b/0x30 fs/namei.c:496
 do_dentry_open+0x312/0x870 fs/open.c:860
 vfs_open+0x43/0x50 fs/open.c:931
 do_open fs/namei.c:3252 [inline]
 path_openat+0x1844/0x20a0 fs/namei.c:3369
 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: 1 PID: 4889 Comm: systemd-journal Not tainted 5.10.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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