[dpdk-dev] [PATCH v2 2/2] examples/vhost: fix path allocation failure handling

[Tiwei Bie]

Add the missing failure handling for path allocation,
as realloc() may fail.

Fixes: ad0eef4d2203 ("examples/vhost: support multiple socket files")
Cc: stable at dpdk.org

Signed-off-by: Tiwei Bie <tiwei.bie at intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>
---
v2:
- Improve the title and add some explanations (Thomas);

 examples/vhost/main.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/examples/vhost/main.c b/examples/vhost/main.c
index 645cf51e9..5e914f58e 100644
--- a/examples/vhost/main.c
+++ b/examples/vhost/main.c
@@ -353,11 +353,19 @@ port_init(uint16_t port)
 static int
 us_vhost_parse_socket_path(const char *q_arg)
 {
+	char *old;
+
 	/* parse number string */
 	if (strnlen(q_arg, PATH_MAX) == PATH_MAX)
 		return -1;
 
+	old = socket_files;
 	socket_files = realloc(socket_files, PATH_MAX * (nb_sockets + 1));
+	if (socket_files == NULL) {
+		free(old);
+		return -1;
+	}
+
 	snprintf(socket_files + nb_sockets * PATH_MAX, PATH_MAX, "%s", q_arg);
 	nb_sockets++;
 
-- 
2.17.1