From mboxrd@z Thu Jan 1 00:00:00 1970 From: swhiteho@redhat.com Date: Tue, 14 Aug 2007 10:47:14 +0100 Subject: [Cluster-devel] [PATCH] [GFS2] Fix incorrect error path in prepare_write() In-Reply-To: <11870848365-git-send-email-swhiteho@redhat.com> References: <11870848365-git-send-email-swhiteho@redhat.com> Message-ID: <11870848591530-git-send-email-swhiteho@redhat.com> List-Id: To: cluster-devel.redhat.com MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit From: Steven Whitehouse The error path in prepare_write() was incorrect in the (very rare) event that the transaction fails to start. The following prevents a NULL pointer dereference, Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c index ce90032..42a5f58 100644 --- a/fs/gfs2/ops_address.c +++ b/fs/gfs2/ops_address.c @@ -416,7 +416,7 @@ static int gfs2_prepare_write(struct file *file, struct page *page, error = gfs2_trans_begin(sdp, rblocks, 0); if (error) - goto out; + goto out_trans_fail; if (gfs2_is_stuffed(ip)) { if (end > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode)) { @@ -434,6 +434,7 @@ prepare_write: out: if (error) { gfs2_trans_end(sdp); +out_trans_fail: if (alloc_required) { gfs2_inplace_release(ip); out_qunlock: -- 1.5.1.2