From: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Date: Tue, 26 Feb 2019 12:12:53 +0000 (+0100)
Subject: fuzz-lldp: avoid assertion failure on samples which dont fit in pipe
X-Git-Tag: v242-rc1~240^2~1
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=d92e7b8fe46e450726106c7289d5ce36f6c3c611;p=thirdparty%2Fsystemd.git

fuzz-lldp: avoid assertion failure on samples which dont fit in pipe

Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=11603.
---

diff --git a/src/fuzz/fuzz-lldp.c b/src/fuzz/fuzz-lldp.c
index b9291d47837..7f252309cd5 100644
--- a/src/fuzz/fuzz-lldp.c
+++ b/src/fuzz/fuzz-lldp.c
@@ -23,6 +23,9 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
         _cleanup_(sd_event_unrefp) sd_event *e = NULL;
         _cleanup_(sd_lldp_unrefp) sd_lldp *lldp = NULL;
 
+        if (size > 2048)
+                return 0;
+
         assert_se(sd_event_new(&e) == 0);
         assert_se(sd_lldp_new(&lldp) >= 0);
         assert_se(sd_lldp_set_ifindex(lldp, 42) >= 0);
diff --git a/src/fuzz/fuzz-lldp.options b/src/fuzz/fuzz-lldp.options
new file mode 100644
index 00000000000..60bd9b0b2fa
--- /dev/null
+++ b/src/fuzz/fuzz-lldp.options
@@ -0,0 +1,2 @@
+[libfuzzer]
+max_len = 2048