ext2: reject inodes with negative size

[sfrench/cifs-2.6.git] / fs / ext2 / inode.c

diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 41b8b44a391cb5dc8ed833cb95b632424372e038..01f6d4be7f9aae0bb0a39899e2ab003da6045974 100644 (file)
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -1476,6 +1476,10 @@ struct inode *ext2_iget (struct super_block *sb, unsigned long ino)
                inode->i_size |= ((__u64)le32_to_cpu(raw_inode->i_size_high)) << 32;
        else
                ei->i_dir_acl = le32_to_cpu(raw_inode->i_dir_acl);
+       if (i_size_read(inode) < 0) {
+               ret = -EFSCORRUPTED;
+               goto bad_inode;
+       }
        ei->i_dtime = 0;
        inode->i_generation = le32_to_cpu(raw_inode->i_generation);
        ei->i_state = 0;