[dm-devel] [PATCH 02/14] libmultipath: check malloc return value in, print_foreign_topology

[lixiaokeng]

We check the return value of malloc in print_foreign_topology.

Signed-off-by: Lixiaokeng <lixiaokeng at huawei.com>
Signed-off-by: Zhiqiang Liu <liuzhiqiang26 at huawei.com>
Signed-off-by: Linfeilong <linfeilong at huawei.com>
---
 libmultipath/foreign.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libmultipath/foreign.c b/libmultipath/foreign.c
index e8f61351..44f32d03 100644
--- a/libmultipath/foreign.c
+++ b/libmultipath/foreign.c
@@ -545,6 +545,10 @@ void print_foreign_topology(int verbosity)
 	char *buf = NULL, *tmp = NULL;

 	buf = malloc(buflen);
+	if (!buf) {
+		condlog (0, "malloc buf failed.");
+		return;
+	}
 	buf[0] = '\0';
 	while (buf != NULL) {
 		char *c = buf;
--