Disable VGF tests

Summary: Temporary to unblock diff train.

Differential Revision: D100808720

Author: digantdesai

backends/arm/test/targets.bzl

@@ -3,7 +3,7 @@ load("@fbcode_macros//build_defs:python_pytest.bzl", "python_pytest")
 load("@bazel_skylib//lib:paths.bzl", "paths")
 load("@fbsource//xplat/executorch/build:runtime_wrapper.bzl", "runtime")
 
-_ENABLE_VGF = True
+_ENABLE_VGF = False  # Disabled: memfd_create blocked by seccomp on Sandcastle causes segfaults before Python pre-flight check can run
 
 def define_arm_tests():
     # TODO [fbonly] Add more tests
@@ -72,6 +72,7 @@ def define_arm_tests():
             resources = ["conftest.py"],
             compile = "with-source",
             typing = False,
+            skip_on_mode_mac = True,
             env = {} if runtime.is_oss else ({
                 "MODEL_CONVERTER_PATH": "$(location fbsource//third-party/pypi/ai-ml-sdk-model-converter/0.8.0:model-converter-bin)",
                 "MODEL_CONVERTER_LIB_DIR": "$(location fbsource//third-party/nvidia-nsight-systems:linux-x86_64)/host-linux-x64",