fix(ci): don't preload LSAN into gen script Python processes

The gen_*.py scripts import torch, which has internal pybind/JIT
allocations that LSAN reports as leaks.  These are not our leaks.
Previously, LD_PRELOAD=liblsan.so was set for the gen scripts to
handle dlopen of the sanitizer-built custom op .so, but this causes
LSAN to track all Python/torch allocations and fail on exit.

Fix: run gen scripts without LD_PRELOAD.  The gen scripts don't
need LSAN — only the C++ test binary (ctest) does, and ctest
already inherits LSAN via the -fsanitize=leak compile flag.

Also revert the DPA2 cpu_lmp_nlist test (needs further investigation).

Author: Han Wang

source/api_cc/tests/test_deeppot_dpa2_pt.cc

@@ -273,11 +273,6 @@ TYPED_TEST(TestInferDeepPotDpa2PtNoPbc, cpu_build_nlist) {
   }
 }
 
-// TODO: This test uses a flat nlist with nloc==nall (no ghost atoms),
-// so it does not exercise the mapping/ghost-atom code path that a PBC
-// simulation with _build_nlist would test.  Adding a proper PBC+ghost
-// lmp_nlist test requires generating reference values with ghost atoms,
-// which needs non-trivial test infrastructure changes.
 TYPED_TEST(TestInferDeepPotDpa2PtNoPbc, cpu_lmp_nlist) {
   using VALUETYPE = TypeParam;
   std::vector<VALUETYPE>& coord = this->coord;

source/install/test_cc_local.sh

@@ -35,21 +35,15 @@ cmake --build . -j${NPROC}
 cmake --install .
 # Generate PT/PT2 model files for C++ tests.
 # Must run after cmake --build so that libdeepmd_op_pt.so (custom ops) is available.
-# When the build uses -fsanitize=leak, the resulting .so requires the LSAN runtime;
-# Python's dlopen would fail unless we preload it.
+# Run WITHOUT LSAN preload — LSAN is only needed for the C++ test binary.
+# Preloading LSAN into Python causes false leak reports from torch/paddle
+# internal allocations (pybind/JIT init).
 INFER_SCRIPT_PATH=${SCRIPT_PATH}/../tests/infer
-_GEN_ENV=""
-if echo "${CXXFLAGS:-}" | grep -q fsanitize=leak; then
-	_LSAN_LIB=$(gcc -print-file-name=liblsan.so 2>/dev/null || true)
-	if [ -n "${_LSAN_LIB}" ] && [ -f "${_LSAN_LIB}" ]; then
-		_GEN_ENV="LD_PRELOAD=${_LSAN_LIB}"
-	fi
-fi
-env ${_GEN_ENV} python ${INFER_SCRIPT_PATH}/gen_sea.py
-env ${_GEN_ENV} python ${INFER_SCRIPT_PATH}/gen_dpa1.py
-env ${_GEN_ENV} python ${INFER_SCRIPT_PATH}/gen_dpa2.py
-env ${_GEN_ENV} python ${INFER_SCRIPT_PATH}/gen_dpa3.py
-env ${_GEN_ENV} python ${INFER_SCRIPT_PATH}/gen_fparam_aparam.py
+python ${INFER_SCRIPT_PATH}/gen_sea.py
+python ${INFER_SCRIPT_PATH}/gen_dpa1.py
+python ${INFER_SCRIPT_PATH}/gen_dpa2.py
+python ${INFER_SCRIPT_PATH}/gen_dpa3.py
+python ${INFER_SCRIPT_PATH}/gen_fparam_aparam.py
 if [ "${ENABLE_PADDLE:-TRUE}" == "TRUE" ]; then
 	PADDLE_INFERENCE_DIR=${BUILD_TMP_DIR}/paddle_inference_install_dir
 	export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${PADDLE_INFERENCE_DIR}/third_party/install/onednn/lib:${PADDLE_INFERENCE_DIR}/third_party/install/mklml/lib