From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Carpenter Date: Thu, 1 Aug 2013 16:55:26 +0300 Subject: [Ocfs2-devel] [patch] ocfs2: fix recent memory corruption bug Message-ID: <20130801135526.GA17153@elgon.mountain> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ocfs2-devel@oss.oracle.com The pointer math in 6fdf3af1d2 "ocfs2: fix null pointer dereference in ocfs2_dir_foreach_blk_id()" isn't correct so it will zero out the wrong memory. Signed-off-by: Dan Carpenter --- Static checker stuff. diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c index c91d986..6942c22 100644 --- a/fs/ocfs2/dir.c +++ b/fs/ocfs2/dir.c @@ -2157,8 +2157,7 @@ int ocfs2_empty_dir(struct inode *inode) .ctx.pos = 0, }; - memset(&priv + sizeof(struct dir_context), 0, - sizeof(priv) - sizeof(struct dir_context)); + memset(&priv.seen_dot, 0, sizeof(priv) - sizeof(struct dir_context)); if (ocfs2_dir_indexed(inode)) { ret = ocfs2_empty_dir_dx(inode, &priv);