[#640,!351] Don't log EOF received from AFL

There seemed to be a lot of them and they were just filling up the log.

diff --git a/src/lib/dhcpsrv/fuzz.cc b/src/lib/dhcpsrv/fuzz.cc
index 592d5b720ce143b7816e54f562a7a616cc637aeb..11afbe1b685ce1d27fd61ff2a63e5dd71be27698 100644 (file)
--- a/src/lib/dhcpsrv/fuzz.cc
+++ b/src/lib/dhcpsrv/fuzz.cc
@@ -241,7 +241,10 @@ Fuzz::run(void) {
         char buf[BUFFER_SIZE];
         ssize_t length = read(0, buf, sizeof(buf));
         if (length <= 0) {
-            LOG_ERROR(fuzz_logger, FUZZ_READ_FAIL).arg(strerror(errno));
+            // Don't log EOFs received - they may be generated by AFL
+            if (length != 0) {
+                LOG_ERROR(fuzz_logger, FUZZ_READ_FAIL).arg(strerror(errno));
+            }
             usleep(SLEEP_INTERVAL);
             continue;
         }