[dpdk-dev] [PATCH v2] vhost: fix check if cmsg is NULL

[Tomasz Kulasek]

Fixes: 8f972312b8f4 ("vhost: support vhost-user")
Cc: jianfeng....@intel.com
Cc: sta...@dpdk.org

Signed-off-by: Pawel Wodkowski <pawelx.wodkow...@intel.com>
Signed-off-by: Tomasz Kulasek <tomaszx.kula...@intel.com>
---
v2 changes:
  - Changed fixline to point right commit

---
 lib/librte_vhost/socket.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/librte_vhost/socket.c b/lib/librte_vhost/socket.c
index 83befdced..8fd47a4d8 100644
--- a/lib/librte_vhost/socket.c
+++ b/lib/librte_vhost/socket.c
@@ -153,6 +153,11 @@ send_fd_message(int sockfd, char *buf, int buflen, int 
*fds, int fd_num)
                msgh.msg_control = control;
                msgh.msg_controllen = sizeof(control);
                cmsg = CMSG_FIRSTHDR(&msgh);
+               if (cmsg == NULL) {
+                       RTE_LOG(ERR, VHOST_CONFIG, "cmsg == NULL\n");
+                       errno = EINVAL;
+                       return -1;
+               }
                cmsg->cmsg_len = CMSG_LEN(fdsize);
                cmsg->cmsg_level = SOL_SOCKET;
                cmsg->cmsg_type = SCM_RIGHTS;
-- 
2.14.1