diff --git a/.ci/scripts/unittest-macos-cmake.sh b/.ci/scripts/unittest-macos-cmake.sh
index 43eb1f21c3c..48f072a0cc1 100755
--- a/.ci/scripts/unittest-macos-cmake.sh
+++ b/.ci/scripts/unittest-macos-cmake.sh
@@ -12,8 +12,19 @@ set -eux
 export TORCHINDUCTOR_CACHE_DIR="$(mktemp -d "${RUNNER_TEMP:-/tmp}/torchinductor_cache_XXXXXX")"
 trap 'rm -rf "${TORCHINDUCTOR_CACHE_DIR}"' EXIT
 
-# Run pytest with coverage
-${CONDA_RUN} pytest -n auto --cov=./ --cov-report=xml
+# TODO(SS-JIA): AOTI tests hang on macOS CI runners — the thread blocks in
+# native C/C++ code (dlopen / inductor compilation) so faulthandler cannot
+# even produce a traceback. Diagnosis ongoing in #19886.
+AOTI_SKIPS=(
+  --ignore=examples/models/llama3_2_vision/preprocess/test_preprocess.py
+  --ignore=examples/models/llama3_2_vision/vision_encoder/test/test_vision_encoder.py
+  --ignore=examples/models/llama3_2_vision/text_decoder/test/test_text_decoder.py
+  --deselect=extension/llm/modules/test/test_position_embeddings.py::TilePositionalEmbeddingTest::test_tile_positional_embedding_aoti
+  --deselect=extension/llm/modules/test/test_position_embeddings.py::TiledTokenPositionalEmbeddingTest::test_tiled_token_positional_embedding_aoti
+  --deselect=extension/llm/modules/test/test_attention.py::AttentionTest::test_attention_aoti
+)
+
+${CONDA_RUN} pytest -n auto --cov=./ --cov-report=xml "${AOTI_SKIPS[@]}"
 # Run gtest
 LLVM_PROFDATA="xcrun llvm-profdata" LLVM_COV="xcrun llvm-cov" \
 ${CONDA_RUN} test/run_oss_cpp_tests.sh
diff --git a/.github/workflows/_unittest.yml b/.github/workflows/_unittest.yml
index 15c87bd79e4..a253857d2c0 100644
--- a/.github/workflows/_unittest.yml
+++ b/.github/workflows/_unittest.yml
@@ -49,6 +49,7 @@ jobs:
       python-version: '3.11'
       submodules: 'recursive'
       ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.sha || github.sha }}
+      timeout: 120
       script: |
         set -eux
         # This is needed to get the prebuilt PyTorch wheel from S3