fs/ntfs3: Break dir enumeration if directory contents error

If we somehow attempt to read beyond the directory size, an error
is supposed to be returned.

However, in some cases, read requests do not stop and instead enter
into a loop.

To avoid this, we set the position in the directory to the end.

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Cc: stable@vger.kernel.org

diff --git a/fs/ntfs3/dir.c b/fs/ntfs3/dir.c
index 5cf3d9decf646b1935517e8b564d807626e60e0f..45e556fd7c54fa61f2ea930895b6b3b96445a1f9 100644 (file)
--- a/fs/ntfs3/dir.c
+++ b/fs/ntfs3/dir.c
@@ -475,6 +475,7 @@ static int ntfs_readdir(struct file *file, struct dir_context *ctx)
                vbo = (u64)bit << index_bits;
                if (vbo >= i_size) {
                        ntfs_inode_err(dir, "Looks like your dir is corrupt");
+                       ctx->pos = eod;
                        err = -EINVAL;
                        goto out;
                }