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feat: add fuzz-clean-usbip app and extract shared fuzz-env

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Adds `nix run .#fuzz-clean-usbip -- <target>` to re-check crash/oom/timeout
artifacts and delete the ones that no longer reproduce (already fixed).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Davíð Steinn Geirsson 2026-03-25 22:21:34 +00:00
parent 2e2a5961d6
commit d49d371509
1 changed files with 51 additions and 3 deletions
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54
flake.nix
View file

@ -79,11 +79,14 @@
};
apps = let
fuzz-usbip = pkgs.writeShellScriptBin "fuzz-usbip" ''
set -euo pipefail
export PATH="${rust-nightly}/bin:${pkgs.cargo-fuzz}/bin:${pkgs.stdenv.cc}/bin:${pkgs.pkg-config}/bin:$PATH"
fuzz-env = ''
export PATH="${rust-nightly}/bin:${pkgs.cargo-fuzz}/bin:${pkgs.stdenv.cc}/bin:${pkgs.pkg-config}/bin:${pkgs.coreutils}/bin:$PATH"
export PKG_CONFIG_PATH="${pkgs.libusb1.dev}/lib/pkgconfig''${PKG_CONFIG_PATH:+:$PKG_CONFIG_PATH}"${pkgs.lib.optionalString pkgs.stdenv.hostPlatform.isLinux '':${pkgs.udev.dev}/lib/pkgconfig''}
cd "$(${pkgs.git}/bin/git rev-parse --show-toplevel)/lib"
'';
fuzz-usbip = pkgs.writeShellScriptBin "fuzz-usbip" ''
set -euo pipefail
${fuzz-env}
if [ $# -eq 0 ]; then
cargo fuzz list
else
@ -107,11 +110,56 @@
fi
fi
'';
fuzz-clean-usbip = pkgs.writeShellScriptBin "fuzz-clean-usbip" ''
set -euo pipefail
${fuzz-env}
if [ $# -eq 0 ]; then
echo "Usage: fuzz-clean-usbip <target>"
echo "Available targets:"
cargo fuzz list
exit 1
fi
target="$1"
dir="fuzz/artifacts/$target"
if [ ! -d "$dir" ]; then
echo "No artifacts directory: $dir"
exit 0
fi
shopt -s nullglob
files=("$dir"/crash-* "$dir"/oom-* "$dir"/timeout-*)
if [ ''${#files[@]} -eq 0 ]; then
echo "No artifacts to test."
exit 0
fi
echo "Building $target..."
if ! cargo fuzz build "$target" 2>&1; then
echo "Build failed — not touching artifacts."
exit 1
fi
echo "Testing ''${#files[@]} artifacts for $target..."
removed=0
kept=0
for f in "''${files[@]}"; do
if timeout 30 cargo fuzz run "$target" "$f" -- -max_len=1048576 >/dev/null 2>&1; then
rm "$f"
removed=$((removed + 1))
else
kept=$((kept + 1))
fi
echo -ne "\r tested $((removed + kept))/''${#files[@]}, removed $removed, kept $kept"
done
echo ""
echo "Done: removed $removed fixed, kept $kept still-crashing."
'';
in {
fuzz-usbip = {
type = "app";
program = "${fuzz-usbip}/bin/fuzz-usbip";
};
fuzz-clean-usbip = {
type = "app";
program = "${fuzz-clean-usbip}/bin/fuzz-clean-usbip";
};
};
});
}