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BUG: KCSAN: data-race in clear_inode / other_inode_match

read to 0xffff8880b77b3200 of 8 bytes by task 10283 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_dirty+0x101/0x120 fs/ext4/extents.c:165
 ext4_swap_extents+0xc81/0xe20 fs/ext4/extents.c:5923
 move_extent_per_page fs/ext4/move_extent.c:339 [inline]
 ext4_move_extents+0x1189/0x1de0 fs/ext4/move_extent.c:673
 ext4_ioctl+0x2b0f/0x31f0 fs/ext4/ioctl.c:992
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:509 [inline]
 do_vfs_ioctl+0x991/0xc60 fs/ioctl.c:696
 ksys_ioctl+0xbd/0xe0 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x4c/0x60 fs/ioctl.c:718
 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

write to 0xffff8880b77b3200 of 8 bytes by task 7570 on cpu 0:
 clear_inode+0x151/0x1b0 fs/inode.c:536
 ext4_clear_inode+0x34/0x110 fs/ext4/super.c:1174
 ext4_free_inode+0x11f/0xa50 fs/ext4/ialloc.c:279
 ext4_evict_inode+0x9a9/0xdb0 fs/ext4/inode.c:333
 evict+0x244/0x410 fs/inode.c:574
 iput_final fs/inode.c:1563 [inline]
 iput+0x371/0x4e0 fs/inode.c:1589
 do_unlinkat+0x378/0x530 fs/namei.c:4061
 __do_sys_unlink fs/namei.c:4102 [inline]
 __se_sys_unlink fs/namei.c:4100 [inline]
 __x64_sys_unlink+0x3b/0x50 fs/namei.c:4100
 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: 7570 Comm: syz-executor.1 Not tainted 5.4.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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