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BUG: KCSAN: data-race in ext4_free_inodes_count / ext4_free_inodes_set

write to 0xffff888103c7d00e of 2 bytes by task 3471 on cpu 0:
 ext4_free_inodes_set+0x1f/0x80 fs/ext4/super.c:405
 ext4_free_inode+0x436/0x810 fs/ext4/ialloc.c:323
 ext4_evict_inode+0xb1e/0xdc0 fs/ext4/inode.c:303
 evict+0x1aa/0x410 fs/inode.c:666
 iput_final fs/inode.c:1777 [inline]
 iput+0x42c/0x5b0 fs/inode.c:1803
 d_delete_notify include/linux/fsnotify.h:262 [inline]
 vfs_rmdir+0x274/0x2f0 fs/namei.c:4202
 do_rmdir+0x194/0x320 fs/namei.c:4248
 __do_sys_unlinkat fs/namei.c:4424 [inline]
 __se_sys_unlinkat fs/namei.c:4418 [inline]
 __x64_sys_unlinkat+0xa4/0xb0 fs/namei.c:4418
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

read to 0xffff888103c7d00e of 2 bytes by task 18369 on cpu 1:
 ext4_free_inodes_count+0x1c/0x80 fs/ext4/super.c:349
 find_group_other fs/ext4/ialloc.c:594 [inline]
 __ext4_new_inode+0x6eb/0x2270 fs/ext4/ialloc.c:1017
 ext4_symlink+0x242/0x590 fs/ext4/namei.c:3398
 vfs_symlink+0xc2/0x1a0 fs/namei.c:4464
 do_symlinkat+0xe3/0x340 fs/namei.c:4490
 __do_sys_symlinkat fs/namei.c:4506 [inline]
 __se_sys_symlinkat fs/namei.c:4503 [inline]
 __x64_sys_symlinkat+0x62/0x70 fs/namei.c:4503
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

value changed: 0x1855 -> 0x1856

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 18369 Comm: syz-executor.1 Not tainted 6.7.0-rc7-syzkaller-g861deac3b092 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
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