sockets: avoid crash when cleaning up sockets for an invalid FD

If socket_listen_cleanup is passed an invalid FD, then querying the socket local address will fail. We must thus be prepared for the returned addr to be NULL

Reported-by Dr. David Alan Gilbert <[email protected]>

Signed-off-by Daniel P. Berrange <[email protected]>

---
 util/qemu-sockets.c | 3 +++
 1 file changed, 3 insertions(+)

util/qemu-sockets.c +3 -0

index b47fb45885..c7fdaa63fb 100644
@@ -1073,6 +1073,9 @@ void socket_listen_cleanup(int fd, Error **errp)
     SocketAddress *addr;
 
     addr = socket_local_address(fd, errp);
+    if (!addr) {
+        return;
+    }
 
     if (addr->type == SOCKET_ADDRESS_TYPE_UNIX
         && addr->u.q_unix.path) {

Signature · 1 line

2.13.6