From: Frantisek Sumsal <frantisek@sumsal.cz>
Date: Wed, 1 Nov 2023 19:18:28 +0000 (+0100)
Subject: fuzz: limit the size of the input
X-Git-Tag: v255-rc1~48
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=d0404391e5f87a892c2eaed3a89028281af34f6b;p=thirdparty%2Fsystemd.git

fuzz: limit the size of the input

To avoid timeouts in oss-fuzz. The timeout reported in #29736 happened
with a ~500K test case, so with a conservative 128K limit we should
still be well within a range for any reasonable-ish generated input to
get through, while avoiding timeouts.

Resolves: #29736
---

diff --git a/src/core/fuzz-execute-serialize.c b/src/core/fuzz-execute-serialize.c
index 862b525974b..6069efd519f 100644
--- a/src/core/fuzz-execute-serialize.c
+++ b/src/core/fuzz-execute-serialize.c
@@ -75,6 +75,9 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
         _cleanup_fclose_ FILE *f = NULL;
         _cleanup_fdset_free_ FDSet *fdset = NULL;
 
+        if (outside_size_range(size, 0, 128 * 1024))
+                return 0;
+
         fuzz_setup_logging();
 
         assert_se(fdset = fdset_new());