Add a qemu_coverage test in ci (#2883)

* add a qemu_coverage test in ci

* update CI path for changes in qemu-related code

Author: rmalmain

.github/workflows/build_and_test.yml

@@ -344,7 +344,7 @@ jobs:
               - 'libafl_bolts/**'
               - 'libafl_targets/**'
               - 'libafl_qemu/**'
-              - 'fuzzers/*qemu*/**'
+              - 'fuzzers/**/*qemu*/**'
 
   fuzzers-qemu:
     needs:

fuzzers/binary_only/qemu_coverage/Makefile.toml

@@ -288,10 +288,38 @@ rm -rf ${CARGO_MAKE_CRATE_TARGET_DIRECTORY}
 cargo clean
 '''
 
+[tasks.test_inner]
+script_runner = "@shell"
+script = '''
+cargo make ${FEATURE} || exit 1
+
+cargo run --manifest-path ../../../utils/drcov_utils/Cargo.toml --bin drcov_merge -- \
+  -i ${TARGET_DIR}/drcov-000.log ${TARGET_DIR}/drcov-001.log ${TARGET_DIR}/drcov-002.log ${TARGET_DIR}/drcov-003.log \
+  --output ${TARGET_DIR}/drcov-merged.log || exit 1
+
+TMP=$(cargo run --manifest-path ../../../utils/drcov_utils/Cargo.toml --bin drcov_dump_addrs -- \
+  -i ${TARGET_DIR}/drcov-merged.log | wc -l || exit 1)
+
+NB_BLOCKS=$((TMP - 1))
+
+echo "Nb blocks found: $NB_BLOCKS"
+
+if [ $NB_BLOCKS -ge 1700 ]; then
+  echo "Test succeeded"
+else
+  echo "Did not find more than 1700 blocks."
+  exit 1
+fi
+'''
+
 [tasks.arm]
 command = "cargo"
 args = ["make", "-p", "arm", "run"]
 
+[tasks.test_arm]
+command = "cargo"
+args = ["make", "-p", "arm", "test_inner"]
+
 [tasks.aarch64]
 command = "cargo"
 args = ["make", "-p", "aarch64", "run"]
@@ -300,6 +328,10 @@ args = ["make", "-p", "aarch64", "run"]
 command = "cargo"
 args = ["make", "-p", "x86_64", "run"]
 
+[tasks.test_x86_64]
+command = "cargo"
+args = ["make", "-p", "x86_64", "test_inner"]
+
 [tasks.i386]
 command = "cargo"
 args = ["make", "-p", "i386", "run"]
@@ -316,4 +348,4 @@ args = ["make", "-p", "ppc", "run"]
 dependencies = ["arm", "aarch64", "x86_64", "i386", "mips", "ppc"]
 
 [tasks.lightweight]
-dependencies = ["arm", "x86_64"]
+dependencies = ["test_x86_64", "test_arm"]