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BUG: KCSAN: data-race in __mark_inode_dirty / other_inode_match

read to 0xffff888125b35be0 of 8 bytes by task 7332 on cpu 1:
 other_inode_match+0x6b/0x5c0 fs/ext4/inode.c:5156
 find_inode_nowait+0x135/0x160 fs/inode.c:1437
 ext4_update_other_inodes_time fs/ext4/inode.c:5204 [inline]
 ext4_do_update_inode fs/ext4/inode.c:5330 [inline]
 ext4_mark_iloc_dirty+0x12a8/0x1580 fs/ext4/inode.c:5876
 ext4_mark_inode_dirty+0xe9/0x420 fs/ext4/inode.c:6055
 ext4_ext_tree_init+0x92/0xb0 fs/ext4/extents.c:860
 __ext4_new_inode+0x2de5/0x3070 fs/ext4/ialloc.c:1169
 ext4_mkdir+0x289/0x820 fs/ext4/namei.c:2763
 vfs_mkdir+0x283/0x390 fs/namei.c:3807
 do_mkdirat+0x1ac/0x1f0 fs/namei.c:3830
 __do_sys_mkdir fs/namei.c:3846 [inline]
 __se_sys_mkdir fs/namei.c:3844 [inline]
 __x64_sys_mkdir+0x40/0x50 fs/namei.c:3844
 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

write to 0xffff888125b35be0 of 8 bytes by task 7365 on cpu 0:
 __mark_inode_dirty+0x1ce/0x940 fs/fs-writeback.c:2286
 mark_inode_dirty include/linux/fs.h:2165 [inline]
 dquot_alloc_space include/linux/quotaops.h:308 [inline]
 dquot_alloc_block include/linux/quotaops.h:325 [inline]
 ext4_mb_new_blocks+0x2fa/0x1de0 fs/ext4/mballoc.c:4506
 ext4_ext_map_blocks+0x1c1e/0x2330 fs/ext4/extents.c:4460
 ext4_map_blocks+0x23a/0xfa0 fs/ext4/inode.c:640
 ext4_getblk+0x82/0x380 fs/ext4/inode.c:974
 ext4_bread+0x4a/0x210 fs/ext4/inode.c:1024
 ext4_append+0xc8/0x1f0 fs/ext4/namei.c:67
 ext4_init_new_dir fs/ext4/namei.c:2728 [inline]
 ext4_mkdir+0x421/0x820 fs/ext4/namei.c:2773
 vfs_mkdir+0x283/0x390 fs/namei.c:3807
 do_mkdirat+0x1ac/0x1f0 fs/namei.c:3830
 __do_sys_mkdir fs/namei.c:3846 [inline]
 __se_sys_mkdir fs/namei.c:3844 [inline]
 __x64_sys_mkdir+0x40/0x50 fs/namei.c:3844
 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 7365 Comm: syz-executor.3 Not tainted 5.4.0-rc3+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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