v2

build.sh

@@ -1,21 +1,27 @@
-#!/bin/bash
-export CC=afl-clang-lto
-export CXX=afl-clang-lto++
-export LD=$CXX
-
+#!/bin/bash -e
 args=(-DBUILD_EXAMPLES=ON -DENABLE_OPENGL=OFF -DBUILD_SHARED_LIBS=OFF)
 
+export CC=afl-clang-fast
+export CXX=afl-clang-fast++
+export LD=$CXX
 unset AFL_USE_ASAN
-grep -Fq '/afl-' build2/CMakeCache.txt || rm -rf build2
+if ! grep -Fq '/afl-' build2/CMakeCache.txt; then
+	rm -rf build2
 	cmake -S . -B build2 "${args[@]}"
+fi
 nice make -C build2 clean
 nice make -C build2 -j10
 for f in build2/bin/Linux/*; do
-	ln -sv "../../$f" "bin/Linux/${f##*/}_noasan"
+	ln -snfv "../../$f" "bin/Linux/${f##*/}_noasan"
 done
 
+export CC=afl-clang-lto
+export CXX=afl-clang-lto++
+export LD=$CXX
 export AFL_USE_ASAN=1
-grep -Fq '/afl-' CMakeCache.txt || rm -f CMakeCache.txt
+if ! grep -Fq '/afl-' CMakeCache.txt; then
+	rm -f CMakeCache.txt
 	cmake . "${args[@]}"
+fi
 nice make clean
 nice make -j10

examples/CMakeLists.txt

@@ -3,6 +3,7 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 set(IRREXAMPLES
 	LoadTexture
+	LoadMesh
 )
 if(FALSE)
 	list(APPEND IRREXAMPLES AutomatedTest)

examples/LoadMesh/main.cpp

@@ -0,0 +1,44 @@
+#include <irrlicht.h>
+#include <iostream>
+
+using namespace irr;
+
+int main(int argc, char *argv[])
+{
+	if (argc < 2)
+		return 1;
+
+	SIrrlichtCreationParameters p;
+	p.DriverType = video::EDT_NULL;
+	p.WindowSize = core::dimension2du(640, 480);
+	p.LoggingLevel = ELL_DEBUG;
+
+	auto *device = createDeviceEx(p);
+	if (!device)
+		return 1;
+	auto *smgr = device->getSceneManager();
+
+	while (__AFL_LOOP(10000)) {
+		auto *mfile = device->getFileSystem()->createAndOpenFile(argv[1]);
+		if (!mfile)
+			continue;
+		scene::IAnimatedMesh *mesh;
+		// Irrlicht matches on file extension so we have to do this by hand
+		for (u32 i = 0; i < smgr->getMeshLoaderCount(); i++) {
+			mfile->seek(0);
+			mesh = smgr->getMeshLoader(i)->createMesh(mfile);
+			if (mesh) {
+				core::stringc msg("Loaded using loader #");
+				msg += core::stringc(i);
+				device->getLogger()->log(msg.c_str(), ELL_DEBUG);
+				break;
+			}
+		}
+		if (mesh)
+			mesh->drop();
+		mfile->drop();
+	}
+
+	device->drop();
+	return 0;
+}

repro.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 aflout=out/default
 myout=out_rep
-exe=./bin/Linux/LoadTexture
+exe=./bin/Linux/LoadMesh
 rm -rf "$myout" && mkdir -p "$myout"
 find $aflout/crashes -name 'id:*' -print | \
 while read file; do
@@ -14,7 +14,7 @@ while read file; do
 	if grep -Fq '==ERROR: AddressSanitizer: SEGV on unknown address' "$fout"; then
 		gdb -q --batch -iex 'set confirm off' -ex r -ex bt --args \
 			${exe}_noasan "$file" >"$fout" 2>&1
-		if grep -q '^Thread.*received signal'; then
+		if grep -Eq '^(Thread|Program).*received signal' "$fout"; then
 			cp "$file" "$myout/$short.bin"
 			echo "✔ Reproduced (gdb)"
 		else

run.sh

@@ -1,15 +1,15 @@
 #!/bin/bash
 export AFL_SKIP_CPUFREQ=1
 export AFL_TMPDIR=/dev/shm
+exe=./bin/Linux/LoadMesh
 opts=(
 	-t 100
 	-i sample_u/
 	-o out/
 )
-exe=./bin/Linux/LoadTexture
 if ! [ -d sample_u ]; then
 	mkdir sample_u
-	afl-cmin.bash -i sample/ -o sample_u/ -- $exe @@
+	afl-cmin.bash -T 4 -i sample/ -o sample_u/ -- $exe @@
 	echo; echo
 fi
 exec afl-fuzz \