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Cap the number of fuzzed decoder packets to 200

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The fuzzer figured out that 3 bytes is enough to fuzz a package.
2 bytes for packet length, and 1 byte of actual packet. A 20K test case
can generate > 6000 packets. It does not seem like efficient fuzzing.

This CL simply stops execution when 200 packets have been generated.
That corresponds to 4 seconds of 20 ms packets.

Bug: chromium:840115
Change-Id: Id2742a6f8021134bacd8a6e8c71b32f20c7f1086
Reviewed-on: https://webrtc-review.googlesource.com/88566
Reviewed-by: Alex Loiko <aleloi@webrtc.org>
Commit-Queue: Sam Zackrisson <saza@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24000}
This commit is contained in:
Sam Zackrisson
2018-07-13 16:00:31 +02:00
committed by Commit Bot
parent 684b401016
commit 35c773dad6
1 changed files with 7 additions and 2 deletions
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9
test/fuzzers/audio_decoder_fuzzer.cc
View File

@ -51,8 +51,13 @@ void FuzzAudioDecoder(DecoderFunctionType decode_type,
const uint8_t* data_ptr = data;
size_t remaining_size = size;
size_t packet_len;
while (ParseInt<size_t, 2>(&data_ptr, &remaining_size, &packet_len) &&
packet_len <= remaining_size) {
constexpr size_t kMaxNumFuzzedPackets = 200;
for (size_t num_packets = 0; num_packets < kMaxNumFuzzedPackets;
++num_packets) {
if (!(ParseInt<size_t, 2>(&data_ptr, &remaining_size, &packet_len) &&
packet_len <= remaining_size)) {
break;
}
AudioDecoder::SpeechType speech_type;
switch (decode_type) {
case DecoderFunctionType::kNormalDecode: