xfs: check the return value of sb_min_blocksize() in xfs_fs_fill_super

sb_min_blocksize() may return 0. Check its return value to avoid the
filesystem super block when sb->s_blocksize is 0.

Cc: [email protected] # v6.15
Fixes: a64e5a5 ("bdev: add back PAGE_SIZE block size validation for sb_set_blocksize()")
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Yongpeng Yang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Christian Brauner <[email protected]>

Author: Yongpeng Yang

fs/xfs/xfs_super.c

@@ -1662,7 +1662,10 @@ xfs_fs_fill_super(
 	if (error)
 		return error;
 
-	sb_min_blocksize(sb, BBSIZE);
+	if (!sb_min_blocksize(sb, BBSIZE)) {
+		xfs_err(mp, "unable to set blocksize");
+		return -EINVAL;
+	}
 	sb->s_xattr = xfs_xattr_handlers;
 	sb->s_export_op = &xfs_export_operations;
 #ifdef CONFIG_XFS_QUOTA