bgpd: reset fuzzer stream

Not resetting this results in random cov

Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>

diff --git a/bgpd/bgp_main.c b/bgpd/bgp_main.c
index 96d7006a268c2de387542843cc93e8cffb452a4c..f0b3a4c45a950134d79f10423b69df1e7f965ad6 100644 (file)
--- a/bgpd/bgp_main.c
+++ b/bgpd/bgp_main.c
@@ -509,8 +509,13 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
        p = FuzzingPeer;
 #endif /* FUZZING_LIBFUZZER */
 
+       ringbuf_reset(p->ibuf_work);
        ringbuf_put(p->ibuf_work, data, size);
 
+       int result = 0;
+       unsigned char pktbuf[BGP_MAX_PACKET_SIZE];
+       uint16_t pktsize = 0;
+
        /*
         * Simulate the read process done by bgp_process_reads().
         *
@@ -527,10 +532,6 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
        fprintf(stderr, "good header\n");
 
 
-       int result = 0;
-       unsigned char pktbuf[BGP_MAX_PACKET_SIZE];
-       uint16_t pktsize = 0;
-
        ringbuf_peek(p->ibuf_work, BGP_MARKER_SIZE, &pktsize, sizeof(pktsize));
        pktsize = ntohs(pktsize);