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BUG: KCSAN: data-race in __mark_inode_dirty / other_inode_match

read to 0xffff888128de21c0 of 8 bytes by task 23872 on cpu 1:
 other_inode_match+0x6b/0x5c0 fs/ext4/inode.c:4820
 find_inode_nowait+0x135/0x160 fs/inode.c:1437
 ext4_update_other_inodes_time fs/ext4/inode.c:4868 [inline]
 ext4_do_update_inode fs/ext4/inode.c:4994 [inline]
 ext4_mark_iloc_dirty+0x12a8/0x1580 fs/ext4/inode.c:5547
 ext4_mark_inode_dirty+0xe9/0x420 fs/ext4/inode.c:5740
 ext4_ext_tree_init+0x92/0xb0 fs/ext4/extents.c:872
 __ext4_new_inode+0x2d94/0x2f10 fs/ext4/ialloc.c:1164
 ext4_mkdir+0x270/0x820 fs/ext4/namei.c:2774
 vfs_mkdir+0x283/0x390 fs/namei.c:3819
 do_mkdirat+0x1ac/0x1f0 fs/namei.c:3842
 __do_sys_mkdir fs/namei.c:3858 [inline]
 __se_sys_mkdir fs/namei.c:3856 [inline]
 __x64_sys_mkdir+0x40/0x50 fs/namei.c:3856
 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

write to 0xffff888128de21c0 of 8 bytes by task 11835 on cpu 0:
 __mark_inode_dirty+0x601/0x940 fs/fs-writeback.c:2288
 mark_inode_dirty include/linux/fs.h:2172 [inline]
 dquot_alloc_space include/linux/quotaops.h:320 [inline]
 dquot_alloc_block include/linux/quotaops.h:337 [inline]
 ext4_mb_new_blocks+0x2fa/0x1de0 fs/ext4/mballoc.c:4506
 ext4_ext_map_blocks+0x1c0f/0x2320 fs/ext4/extents.c:4481
 ext4_map_blocks+0x23a/0xff0 fs/ext4/inode.c:623
 ext4_getblk+0x82/0x380 fs/ext4/inode.c:827
 ext4_bread+0x4a/0x210 fs/ext4/inode.c:877
 ext4_append+0xc8/0x1f0 fs/ext4/namei.c:67
 ext4_init_new_dir fs/ext4/namei.c:2739 [inline]
 ext4_mkdir+0x405/0x820 fs/ext4/namei.c:2784
 vfs_mkdir+0x283/0x390 fs/namei.c:3819
 do_mkdirat+0x1ac/0x1f0 fs/namei.c:3842
 __do_sys_mkdir fs/namei.c:3858 [inline]
 __se_sys_mkdir fs/namei.c:3856 [inline]
 __x64_sys_mkdir+0x40/0x50 fs/namei.c:3856
 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 11835 Comm: syz-executor.3 Not tainted 5.5.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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