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[wasm] Update and run script to generate fuzzer corpus

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The wasm fuzzer corpus is pretty outdated. The script that was used to
generate it did not work any more.
This CL updates the script, and runs it. This generates a fuzzer corpus
of 42011 wasm modules, compared to 15290 before. The new modules will
contain new features like SIMD and multi-value, which will be
interesting fuzzer inputs.

R=ahaas@chromium.org

Change-Id: Ic3df26930cb8c1c6e8d521597ceb06cc338c02ed
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2565512
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71537}
This commit is contained in:
Clemens Backes 2020-11-30 17:54:36 +01:00 committed by Commit Bot
parent ca5e705f88
commit 89ffd740cd
2 changed files with 16 additions and 27 deletions
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2
test/fuzzer/wasm_corpus.tar.gz.sha1
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tools/wasm/update-wasm-fuzzers.sh
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# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
set -e
set -ex
TOOLS_WASM_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
cd "$( dirname "${BASH_SOURCE[0]}" )"
cd ../..
cd ${TOOLS_WASM_DIR}/../..
BUILD_DIR=out/mk_wasm_fuzzer_corpus
CORPUS_DIR=test/fuzzer/wasm_corpus
rm -rf test/fuzzer/wasm_corpus
rm -rf $BUILD_DIR $CORPUS_DIR
mkdir -p $CORPUS_DIR
tools/dev/gm.py x64.release all
# Build optdebug such that the --dump-wasm-module flag is available.
gn gen $BUILD_DIR --args='is_debug=true v8_optimized_debug=true target_cpu="x64" use_goma=true'
autoninja -C $BUILD_DIR
mkdir -p test/fuzzer/wasm_corpus
./tools/run-tests.py --outdir=$BUILD_DIR --extra-flags="--dump-wasm-module \
--dump-wasm-module-path=./$CORPUS_DIR/"
# wasm
./tools/run-tests.py -j8 --variants=default --timeout=10 --arch=x64 \
--mode=release --no-presubmit --extra-flags="--dump-wasm-module \
--dump-wasm-module-path=./test/fuzzer/wasm_corpus/" unittests
./tools/run-tests.py -j8 --variants=default --timeout=10 --arch=x64 \
--mode=release --no-presubmit --extra-flags="--dump-wasm-module \
--dump-wasm-module-path=./test/fuzzer/wasm_corpus/" wasm-spec-tests/*
./tools/run-tests.py -j8 --variants=default --timeout=10 --arch=x64 \
--mode=release --no-presubmit --extra-flags="--dump-wasm-module \
--dump-wasm-module-path=./test/fuzzer/wasm_corpus/" mjsunit/wasm/*
./tools/run-tests.py -j8 --variants=default --timeout=10 --arch=x64 \
--mode=release --no-presubmit --extra-flags="--dump-wasm-module \
--dump-wasm-module-path=./test/fuzzer/wasm_corpus/" \
$(cd test/; ls cctest/wasm/test-*.cc | \
sed -es/wasm\\///g | sed -es/[.]cc/\\/\\*/g)
rm -rf $BUILD_DIR
# Delete items over 20k.
for x in $(find ./test/fuzzer/wasm_corpus/ -type f -size +20k)
do
rm $x
done
find $CORPUS_DIR -type f -size +20k | xargs rm
# Upload changes.
cd test/fuzzer
cd $CORPUS_DIR/..
upload_to_google_storage.py -a -b v8-wasm-fuzzer wasm_corpus