bgpd: fix crash during configuration removal

Test the BFD config pointer before trying to free the session as it
might not exist.

Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>

diff --git a/bgpd/bgp_bfd.c b/bgpd/bgp_bfd.c
index f6f2f5f6e427e3670a56f2e687e596fcb9f01b9c..4995f9a1fd8bc4c3e73cba8d0f7851af8415d003 100644 (file)
--- a/bgpd/bgp_bfd.c
+++ b/bgpd/bgp_bfd.c
@@ -326,7 +326,9 @@ static void bgp_peer_remove_bfd(struct peer *p)
                return;
        }
 
-       bfd_sess_free(&p->bfd_config->session);
+       if (p->bfd_config)
+               bfd_sess_free(&p->bfd_config->session);
+
        XFREE(MTYPE_BFD_CONFIG, p->bfd_config);
 }