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BUG: KCSAN: data-race in __ext4_update_other_inode_time / d_instantiate_new

write to 0xffff88814b2a5c90 of 8 bytes by task 28419 on cpu 1:
 d_instantiate_new+0x99/0xe0 fs/dcache.c:2031
 ext4_mkdir+0x5fa/0x760 fs/ext4/namei.c:2963
 vfs_mkdir+0x2c8/0x3d0 fs/namei.c:3883
 do_mkdirat+0x12e/0x2c0 fs/namei.c:3909
 __do_sys_mkdir fs/namei.c:3929 [inline]
 __se_sys_mkdir fs/namei.c:3927 [inline]
 __x64_sys_mkdir+0x40/0x50 fs/namei.c:3927
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff88814b2a5c90 of 8 bytes by task 29003 on cpu 0:
 inode_is_dirtytime_only include/linux/fs.h:2470 [inline]
 __ext4_update_other_inode_time+0x45/0x550 fs/ext4/inode.c:5010
 ext4_update_other_inodes_time fs/ext4/inode.c:5053 [inline]
 ext4_do_update_inode fs/ext4/inode.c:5102 [inline]
 ext4_mark_iloc_dirty+0x4c6/0x890 fs/ext4/inode.c:5694
 __ext4_mark_inode_dirty+0x4ec/0x5f0 fs/ext4/inode.c:5890
 __ext4_ext_dirty fs/ext4/extents.c:183 [inline]
 ext4_ext_remove_space+0x11c9/0x14c0 fs/ext4/extents.c:3059
 ext4_ext_truncate+0xfe/0x170 fs/ext4/extents.c:4417
 ext4_truncate+0x76e/0xae0 fs/ext4/inode.c:4201
 ext4_evict_inode+0xad5/0xf10 fs/ext4/inode.c:287
 evict+0x1aa/0x410 fs/inode.c:590
 iput_final fs/inode.c:1670 [inline]
 iput+0x3ef/0x580 fs/inode.c:1696
 dentry_unlink_inode+0x23d/0x250 fs/dcache.c:376
 d_delete+0x78/0xa0 fs/dcache.c:2505
 vfs_rmdir+0x2bf/0x2e0 fs/namei.c:3982
 do_rmdir+0x18d/0x330 fs/namei.c:4030
 __do_sys_rmdir fs/namei.c:4049 [inline]
 __se_sys_rmdir fs/namei.c:4047 [inline]
 __x64_sys_rmdir+0x2c/0x30 fs/namei.c:4047
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x000000000000800f -> 0x0000000000000007

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 29003 Comm: syz-executor.1 Tainted: G        W         5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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