From: Theodore Ts'o Date: Thu, 26 Mar 2009 04:06:19 +0000 (-0400) Subject: ext4: Check for an valid i_mode when reading the inode from disk X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=563bdd61fe4dbd6b58cf7eb06f8d8f14479ae1dc;p=linux-2.6-omap-h63xx.git ext4: Check for an valid i_mode when reading the inode from disk Signed-off-by: "Theodore Ts'o" --- diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index bed4a0abd0d..c7d9250fbc3 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -4394,7 +4394,8 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino) inode->i_op = &ext4_symlink_inode_operations; ext4_set_aops(inode); } - } else { + } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || + S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { inode->i_op = &ext4_special_inode_operations; if (raw_inode->i_block[0]) init_special_inode(inode, inode->i_mode, @@ -4402,6 +4403,13 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino) else init_special_inode(inode, inode->i_mode, new_decode_dev(le32_to_cpu(raw_inode->i_block[1]))); + } else { + brelse(bh); + ret = -EIO; + ext4_error(inode->i_sb, __func__, + "bogus i_mode (%o) for inode=%lu", + inode->i_mode, inode->i_ino); + goto bad_inode; } brelse(iloc.bh); ext4_set_inode_flags(inode);