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Correctly restore unstable encoding corpus and create tokio runtime only once per process #8480

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Merged
robert3005 merged 1 commit into from
Jun 17, 2026
+10 −8
Merged

Correctly restore unstable encoding corpus and create tokio runtime only once per process #8480

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3 changes: 2 additions & 1 deletion .github/workflows/run-fuzzer.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -116,6 +116,7 @@ jobs:
- name: Run fuzzing target
id: fuzz
run: |
CORPUS_DIR="fuzz/corpus/${FUZZ_NAME}"
FEATURES_FLAG=""
if [ -n "${{ inputs.extra_features }}" ]; then
FEATURES_FLAG="--features ${{ inputs.extra_features }}"
Expand All @@ -127,7 +128,7 @@ jobs:
${{ inputs.extra_env }} RUST_BACKTRACE=1 \
cargo +$NIGHTLY_TOOLCHAIN fuzz run --release --debug-assertions \
$FEATURES_FLAG \
${{ inputs.fuzz_target }} -- \
${{ inputs.fuzz_target }} "$CORPUS_DIR" -- \
$FORK_FLAG -max_total_time=${{ inputs.max_time }} -rss_limit_mb=0 \
2>&1 | tee fuzz_output.log
continue-on-error: true
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15 changes: 8 additions & 7 deletions fuzz/fuzz_targets/compress_gpu.rs
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Expand Up @@ -4,20 +4,21 @@
#![no_main]
#![expect(clippy::unwrap_used)]

use std::sync::LazyLock;

use libfuzzer_sys::Corpus;
use libfuzzer_sys::fuzz_target;
use tokio::runtime::Builder;
use tokio::runtime::Runtime;
use vortex_error::vortex_panic;
use vortex_fuzz::FuzzCompressGpu;
use vortex_fuzz::run_compress_gpu;

fuzz_target!(|fuzz: FuzzCompressGpu| -> Corpus {
// Use tokio runtime to run async GPU fuzzer
let rt = tokio::runtime::Builder::new_current_thread()
.enable_all()
.build()
.unwrap();
static RUNTIME: LazyLock<Runtime> =
LazyLock::new(|| Builder::new_current_thread().enable_all().build().unwrap());

match rt.block_on(run_compress_gpu(fuzz)) {
fuzz_target!(|fuzz: FuzzCompressGpu| -> Corpus {
match RUNTIME.block_on(run_compress_gpu(fuzz)) {
Ok(true) => Corpus::Keep,
Ok(false) => Corpus::Reject,
Err(e) => {
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