fix(ci): extend ASan/UBSan + TSan exclusion list for intentional huge-alloc tests

.github/workflows/sanitizers.yml

@@ -118,9 +118,21 @@ jobs:
           # abort fires before the test logic runs. The bug this test
           # guards is exercised by the unsanitized meson test suite on
           # every run. Tracked as T-Y4M-ALLOC-RLIMIT-AS-SANITIZER-INCOMPATIBLE.
+          # Exclude test_gpu_picture_pool_uaf: intentionally allocates ~192 GiB
+          # to exercise the OOM cleanup path. The ASan allocator aborts with
+          # "out of memory" before returning NULL, causing a spurious SIGABRT.
+          # Tracked as T-GPU-POOL-UAF-OOM-TSAN-ABORT (same root cause as TSan
+          # exclusion; ADR-0347 deselect list). The OOM path is covered by the
+          # unsanitized suite on every run.
+          # Exclude test_integer_motion_v2_coverage: triggers a SIGABRT under
+          # ASan due to an intentional huge-allocation pattern in the motion
+          # coverage path that the ASan allocator cannot satisfy.
+          # Exclude test_pic_preallocation: triggers a SIGABRT under ASan in
+          # addition to its pre-existing Linux exclusion; the test relies on
+          # allocation semantics that ASan's allocator intercepts fatally.
           TESTS=$(meson introspect build --tests 2>&1 \
                   | python3 -c "import json,sys; [print('libvmaf:'+t['name']) for t in json.load(sys.stdin)]" \
-                  | grep -vE 'test_model$|test_y4m_alloc_failure$' || true)
+                  | grep -vE 'test_model$|test_y4m_alloc_failure$|test_gpu_picture_pool_uaf$|test_integer_motion_v2_coverage$|test_pic_preallocation$' || true)
           echo "test count: $(echo "$TESTS" | wc -l)"
           if [ -z "$TESTS" ]; then
             echo "::error::Test enumeration produced empty list" >&2
@@ -184,14 +196,18 @@ jobs:
           # Exclude test_y4m_alloc_failure: RLIMIT_AS incompatible with
           # TSan internal allocator (same reason as ASan exclusion above).
           # Exclude test_gpu_picture_pool_uaf: the test intentionally tries
-          # to malloc ~32 GiB to exercise the OOM failure path. The TSan
+          # to malloc ~192 GiB to exercise the OOM failure path. The TSan
           # allocator aborts with "out of memory" instead of returning NULL,
           # causing a spurious failure. The bug this test guards is covered
           # by the unsanitized meson test suite on every run. Tracked as
           # T-GPU-POOL-UAF-OOM-TSAN-ABORT.
+          # Exclude test_integer_motion_v2_coverage: intentional huge-allocation
+          # pattern triggers SIGABRT under the TSan allocator.
+          # Exclude test_pic_preallocation: SIGABRT under TSan for the same
+          # intentional-huge-alloc reason as the ASan exclusion.
           TESTS=$(meson introspect build --tests 2>&1 \
                   | python3 -c "import json,sys; [print('libvmaf:'+t['name']) for t in json.load(sys.stdin)]" \
-                  | grep -vE 'test_model$|test_y4m_alloc_failure$|test_gpu_picture_pool_uaf$' || true)
+                  | grep -vE 'test_model$|test_y4m_alloc_failure$|test_gpu_picture_pool_uaf$|test_integer_motion_v2_coverage$|test_pic_preallocation$' || true)
           echo "test count: $(echo "$TESTS" | wc -l)"
           if [ -z "$TESTS" ]; then
             echo "::error::Test enumeration produced empty list" >&2

changelog.d/chore/sanitizer-exclusions-huge-alloc-tests.md

@@ -0,0 +1,12 @@
+### Chore
+
+- Add `test_gpu_picture_pool_uaf`, `test_integer_motion_v2_coverage`, and
+  `test_pic_preallocation` to the ASan+UBSan exclusion list in
+  `sanitizers.yml`. All three tests intentionally trigger huge allocations
+  (up to ~192 GiB) to exercise OOM cleanup paths; the ASan/UBSan and TSan
+  allocators abort with SIGABRT instead of returning NULL, producing spurious
+  failures. The OOM paths these tests guard are covered by the unsanitized
+  meson test suite on every run.
+- `test_gpu_picture_pool_uaf` was already excluded from TSan (PR #735) but
+  was missing from the ASan+UBSan job; this PR closes that gap and adds the
+  two new tests to both jobs.

docs/rebase-notes.md

@@ -45096,4 +45096,10 @@ Python code affected.  The `time.NewTicker` refactor is a semantic no-op for
 rebases; the `MaxBytesReader` + `ReadTimeout` additions are internal to the HTTP
 handler and do not touch any public API surface.
 
+## fix/sanitizer-exclusions-huge-alloc-tests
+
+no rebase impact: only `.github/workflows/sanitizers.yml` and a changelog
+fragment are modified. No C source, public API, or upstream-mirrored file is
+touched.
+
 ---