[dm-devel] [dm- devel][PATCH] libmultipath: fix a memory leak in dm_get_maps

[lixiaokeng]

In dm_get_maps func, if vector_alloc_slot(mp) fails, the
mpp should be free.

Here we call free_multipath(mpp, KEEP_PATHS) to free map.

Signed-off-by: Lixiaokeng <lixiaokeng at huawei.com>
Signed-off-by: Zhiqiang Liu <liuzhiqiang26 at huawei.com>

---
 libmultipath/devmapper.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libmultipath/devmapper.c b/libmultipath/devmapper.c
index f597ff8b..92eef6f1 100644
--- a/libmultipath/devmapper.c
+++ b/libmultipath/devmapper.c
@@ -1198,8 +1198,10 @@ dm_get_maps (vector mp)
 		if (!mpp)
 			goto out;

-		if (!vector_alloc_slot(mp))
+		if (!vector_alloc_slot(mp)) {
+			free_multipath(mpp, KEEP_PATHS);
 			goto out;
+		}

 		vector_set_slot(mp, mpp);
 		mpp = NULL;
--