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BUG: KCSAN: data-race in ext4_free_inodes_count / ext4_free_inodes_set

write to 0xffff8881043c700e of 2 bytes by task 12138 on cpu 0:
 ext4_free_inodes_set+0x1f/0x80 fs/ext4/super.c:405
 __ext4_new_inode+0x1653/0x2230 fs/ext4/ialloc.c:1214
 ext4_mkdir+0x27f/0x740 fs/ext4/namei.c:3017
 vfs_mkdir+0x1f4/0x320 fs/namei.c:4257
 do_mkdirat+0x12f/0x2a0 fs/namei.c:4280
 __do_sys_mkdirat fs/namei.c:4295 [inline]
 __se_sys_mkdirat fs/namei.c:4293 [inline]
 __x64_sys_mkdirat+0x4e/0x60 fs/namei.c:4293
 x64_sys_call+0x2cd3/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:259
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff8881043c700e of 2 bytes by task 12147 on cpu 1:
 ext4_free_inodes_count+0x1c/0x80 fs/ext4/super.c:349
 __ext4_new_inode+0xa22/0x2230 fs/ext4/ialloc.c:1040
 ext4_symlink+0x242/0x5a0 fs/ext4/namei.c:3393
 vfs_symlink+0xca/0x1d0 fs/namei.c:4615
 do_symlinkat+0xe3/0x350 fs/namei.c:4641
 __do_sys_symlinkat fs/namei.c:4657 [inline]
 __se_sys_symlinkat fs/namei.c:4654 [inline]
 __x64_sys_symlinkat+0x5e/0x70 fs/namei.c:4654
 x64_sys_call+0x1dda/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:267
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x1852 -> 0x1851

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 12147 Comm: syz-executor.2 Not tainted 6.11.0-syzkaller-11462-g5e5466433d26 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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