From: Yongpeng Yang yangyongpeng@xiaomi.com
sb_min_blocksize() may return 0. Check its return value to avoid the filesystem super block when sb->s_blocksize is 0.
Cc: stable@vger.kernel.org # v6.15 Fixes: a64e5a596067bd ("bdev: add back PAGE_SIZE block size validation for sb_set_blocksize()") Signed-off-by: Yongpeng Yang yangyongpeng@xiaomi.com --- fs/xfs/xfs_super.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 1067ebb3b001..bc71aa9dcee8 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1693,7 +1693,10 @@ 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