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Skip big scaled advanced_api_fuzzer

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To avoid timeouts.

Change-Id: I8f04fd45313bef47004a616d2460be992692030d
This commit is contained in:
Yannis Guyon 2023-02-08 10:53:40 +01:00
parent 52b6f06703
commit 1347a32d82
1 changed files with 16 additions and 5 deletions
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19
tests/fuzzer/advanced_api_fuzzer.c
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@ -22,7 +22,6 @@
#include "src/webp/decode.h" #include "src/webp/decode.h"
int LLVMFuzzerTestOneInput(const uint8_t* const data, size_t size) { int LLVMFuzzerTestOneInput(const uint8_t* const data, size_t size) {
int i;
WebPDecoderConfig config; WebPDecoderConfig config;
if (!WebPInitDecoderConfig(&config)) return 0; if (!WebPInitDecoderConfig(&config)) return 0;
if (WebPGetFeatures(data, size, &config.input) != VP8_STATUS_OK) return 0; if (WebPGetFeatures(data, size, &config.input) != VP8_STATUS_OK) return 0;
@ -64,7 +63,7 @@ int LLVMFuzzerTestOneInput(const uint8_t* const data, size_t size) {
config.output.colorspace = (WEBP_CSP_MODE)(value % MODE_LAST); config.output.colorspace = (WEBP_CSP_MODE)(value % MODE_LAST);
#endif // WEBP_REDUCE_CSP #endif // WEBP_REDUCE_CSP
for (i = 0; i < 2; ++i) { for (int i = 0; i < 2; ++i) {
if (i == 1) { if (i == 1) {
// Use the bitstream data to generate extreme ranges for the options. An // Use the bitstream data to generate extreme ranges for the options. An
// alternative approach would be to use a custom corpus containing webp // alternative approach would be to use a custom corpus containing webp
@ -80,12 +79,24 @@ int LLVMFuzzerTestOneInput(const uint8_t* const data, size_t size) {
int scaled_height = config.options.scaled_height; int scaled_height = config.options.scaled_height;
if (WebPRescalerGetScaledDimensions(config.input.width, if (WebPRescalerGetScaledDimensions(config.input.width,
config.input.height, &scaled_width, config.input.height, &scaled_width,
&scaled_height) && &scaled_height)) {
(uint64_t)scaled_width * scaled_height > kFuzzPxLimit) { size_t fuzz_px_limit = kFuzzPxLimit;
if (scaled_width != config.input.width ||
scaled_height != config.input.height) {
// Using the WebPRescalerImport internally can significantly slow
// down the execution. Avoid timeouts due to that.
fuzz_px_limit /= 2;
}
// A big output canvas can lead to out-of-memory and timeout issues,
// but a big internal working buffer can too.
if ((uint64_t)scaled_width * scaled_height > fuzz_px_limit ||
(uint64_t)config.input.width * config.input.height >
fuzz_px_limit) {
break; break;
} }
} }
} }
}
if (size % 3) { if (size % 3) {
// Decodes incrementally in chunks of increasing size. // Decodes incrementally in chunks of increasing size.
WebPIDecoder* idec = WebPIDecode(NULL, 0, &config); WebPIDecoder* idec = WebPIDecode(NULL, 0, &config);