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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>
This commit is contained in:
Joseph Qi 2013-09-11 14:19:52 -07:00 committed by Linus Torvalds
parent 3d94ea51c1
commit 2b0f6eae2d
1 changed files with 8 additions and 2 deletions
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10
fs/ocfs2/refcounttree.c
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@ -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,