1 files changed, 6 insertions, 0 deletions

diff --git a/fs/isofs/rock.c b/fs/isofs/rock.c
index f488bbae541a..bb63254ed848 100644
--- a/fs/isofs/rock.c
+++ b/fs/isofs/rock.c
@@ -30,6 +30,7 @@ struct rock_state {
         int cont_size;
         int cont_extent;
         int cont_offset;
+        int cont_loops;
         struct inode *inode;
 };
 
@@ -73,6 +74,9 @@ static void init_rock_state(struct rock_state *rs, struct inode *inode)
         rs->inode = inode;
 }
 
+/* Maximum number of Rock Ridge continuation entries */
+#define RR_MAX_CE_ENTRIES 32
+
 /*
  * Returns 0 if the caller should continue scanning, 1 if the scan must end
  * and -ve on error.
@@ -105,6 +109,8 @@ static int rock_continue(struct rock_state *rs)
                         goto out;
                 }
                 ret = -EIO;
+                if (++rs->cont_loops >= RR_MAX_CE_ENTRIES)
+                        goto out;
                 bh = sb_bread(rs->inode->i_sb, rs->cont_extent);
                 if (bh) {
                         memcpy(rs->buffer, bh->b_data + rs->cont_offset,