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[fuzz] Don't use afl++ deferred forkserver mode

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Deferring the forkserver initialization doesn't make sense for some of
our targets since they involve state that can't be forked (e.g.
threads). We therefore remove the use of __AFL_INIT entirely.

We also increase the __AFL_LOOP count to 100000. Our fuzz targets are
meant to all be deterministic and stateless therefore this should be
fine.
This commit is contained in:
dergoegge 2023-09-13 16:27:45 +01:00
parent f5c5ddafbc
commit 508d05f8a7
1 changed files with 1 additions and 7 deletions
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8
src/test/fuzz/fuzz.cpp
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@ -192,17 +192,11 @@ int main(int argc, char** argv)
{
initialize();
static const auto& test_one_input = *Assert(g_test_one_input);
#ifdef __AFL_HAVE_MANUAL_CONTROL
// Enable AFL deferred forkserver mode. Requires compilation using
// afl-clang-fast++. See fuzzing.md for details.
__AFL_INIT();
#endif
#ifdef __AFL_LOOP
// Enable AFL persistent mode. Requires compilation using afl-clang-fast++.
// See fuzzing.md for details.
const uint8_t* buffer = __AFL_FUZZ_TESTCASE_BUF;
while (__AFL_LOOP(1000)) {
while (__AFL_LOOP(100000)) {
size_t buffer_len = __AFL_FUZZ_TESTCASE_LEN;
test_one_input({buffer, buffer_len});
}