FUZZER: Certain types of fuzzing requires a default ospf instance

Crash found in the fuzzer is because the ospf pointer looked
up for the default vrf instance returns NULL, which immediately
crashes.  Normal OSPF code, to even get here, requires a default
instance of ospf.  As such the fuzzing code violated a tenant
of the main ospf code.  Let's just fix the ospf fuzzing code
to create a default vrf and then associate the ospf code
with it.

Signed-off-by: Donald Sharp <sharpd@nvidia.com>

diff --git a/ospfd/ospf_main.c b/ospfd/ospf_main.c
index 9d57007ca6111e6627fddddfe029106a10f274f1..df1e39b9246a89b2ddc52e8c16e65da3eb2873f7 100644 (file)
--- a/ospfd/ospf_main.c
+++ b/ospfd/ospf_main.c
@@ -173,11 +173,12 @@ static struct ospf *FuzzingCreateOspf(void)
 {
        struct prefix p;
        struct interface *ifp = if_get_by_name("fuzziface", 0, "default");
+       struct vrf *vrf = vrf_get(VRF_DEFAULT, VRF_DEFAULT_NAME);
        ifp->mtu = 68;
        str2prefix("11.0.2.0/24", &p);
 
        bool created;
-       struct ospf *o = ospf_get(0, "omgwtfbbq", &created);
+       struct ospf *o = ospf_get(0, VRF_DEFAULT_NAME, &created);
        o->fd = 69;
 
        struct in_addr in;
@@ -354,4 +355,4 @@ done:
        /* Not reached. */
        return 0;
 }
-#endif
\ No newline at end of file
+#endif