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authorJoseph Qi <joseph.qi@huawei.com>2013-09-12 01:19:52 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-12 02:56:44 +0400
commit2b0f6eae2dd2f7f21dbf93241938a687f6757dea (patch)
treef74caa2c881af2da388114c94d6d9f9e268d8f4e /fs/ocfs2/refcounttree.c
parent3d94ea51c1d8db6f41268a9d2aea5f5771e9a8d3 (diff)
downloadlinux-2b0f6eae2dd2f7f21dbf93241938a687f6757dea.tar.xz
ocfs2: add missing return value check of ocfs2_get_clusters()
In ocfs2_attach_refcount_tree() and ocfs2_duplicate_extent_list(), if error occurs when calling ocfs2_get_clusters(), it will go with unexpected behavior as local variables p_cluster, num_clusters and ext_flags are declared without initialization. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Reviewed-by: Jie Liu <jeff.liu@oracle.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ocfs2/refcounttree.c')
-rw-r--r--fs/ocfs2/refcounttree.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c
index a70d604593b6..bf4dfc14bb2c 100644
--- a/fs/ocfs2/refcounttree.c
+++ b/fs/ocfs2/refcounttree.c
@@ -3854,7 +3854,10 @@ static int ocfs2_attach_refcount_tree(struct inode *inode,
while (cpos < clusters) {
ret = ocfs2_get_clusters(inode, cpos, &p_cluster,
&num_clusters, &ext_flags);
-
+ if (ret) {
+ mlog_errno(ret);
+ goto unlock;
+ }
if (p_cluster && !(ext_flags & OCFS2_EXT_REFCOUNTED)) {
ret = ocfs2_add_refcount_flag(inode, &di_et,
&ref_tree->rf_ci,
@@ -4025,7 +4028,10 @@ static int ocfs2_duplicate_extent_list(struct inode *s_inode,
while (cpos < clusters) {
ret = ocfs2_get_clusters(s_inode, cpos, &p_cluster,
&num_clusters, &ext_flags);
-
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
if (p_cluster) {
ret = ocfs2_add_refcounted_extent(t_inode, &et,
ref_ci, ref_root_bh,