1 files changed, 2 insertions, 0 deletions

diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c
index a624c3ec8189..0509cedd415c 100644
--- a/fs/cramfs/inode.c
+++ b/fs/cramfs/inode.c
@@ -481,6 +481,8 @@ static int cramfs_readpage(struct file *file, struct page * page)
                 pgdata = kmap(page);
                 if (compr_len == 0)
                         ; /* hole */
+                else if (compr_len > (PAGE_CACHE_SIZE << 1))
+                        printk(KERN_ERR "cramfs: bad compressed blocksize %u\n", compr_len);
                 else {
                         mutex_lock(&read_mutex);
                         bytes_filled = cramfs_uncompress_block(pgdata,