diff --git a/.github/workflows/pr.yaml b/.github/workflows/pr.yaml
index 7b9524e61ff9..887fa46fa01a 100644
--- a/.github/workflows/pr.yaml
+++ b/.github/workflows/pr.yaml
@@ -51,7 +51,7 @@ jobs:
       - narwhals-tests
       - telemetry-setup
       - third-party-integration-tests-cudf-pandas
-    uses: rapidsai/shared-workflows/.github/workflows/pr-builder.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/pr-builder.yaml@test-gb300
     permissions:
       contents: read
     if: always()
@@ -94,7 +94,7 @@ jobs:
       packages: read
       pull-requests: read
     needs: telemetry-setup
-    uses: rapidsai/shared-workflows/.github/workflows/changed-files.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/changed-files.yaml@test-gb300
     with:
       files_yaml: |
         build_docs:
@@ -372,7 +372,7 @@ jobs:
     permissions:
       contents: read
     needs: telemetry-setup
-    uses: rapidsai/shared-workflows/.github/workflows/checks.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/checks.yaml@test-gb300
     with:
       enable_check_generated_files: false
       ignored_pr_jobs: "telemetry-summarize spark-rapids-jni cuml-compat-tests"
@@ -385,7 +385,7 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-build.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-build.yaml@test-gb300
     with:
       build_type: pull-request
       build-datetime: ${{ needs.build-details.outputs.build-datetime }}
@@ -400,7 +400,7 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@test-gb300
     with:
       build_type: pull-request
       node_type: cpu16
@@ -416,7 +416,7 @@ jobs:
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
     needs: checks
-    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@test-gb300
     with:
       build_type: pull-request
       script: "ci/cpp_linters.sh"
@@ -428,7 +428,7 @@ jobs:
       id-token: write
       packages: read
       pull-requests: read
-    uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-post-build-checks.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-post-build-checks.yaml@test-gb300
     with:
       build_type: pull-request
       package_name: libcudf
@@ -441,13 +441,11 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-tests.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-tests.yaml@test-gb300
     if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_cpp
     with:
       build_type: pull-request
       script: ci/test_cpp.sh
-      # https://github.com/NVIDIA/cudf/issues/23498
-      matrix_filter: map(select(.GPU != "gb300" and .GPU != "gh200"))
   conda-python-build:
     needs: [build-details, conda-cpp-build]
     permissions:
@@ -457,7 +455,7 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/conda-python-build.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/conda-python-build.yaml@test-gb300
     with:
       build_type: pull-request
       build-datetime: ${{ needs.build-details.outputs.build-datetime }}
@@ -473,7 +471,7 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/conda-python-build.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/conda-python-build.yaml@test-gb300
     with:
       build_type: pull-request
       build-datetime: ${{ needs.build-details.outputs.build-datetime }}
@@ -488,13 +486,11 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/conda-python-tests.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/conda-python-tests.yaml@test-gb300
     if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python_conda && fromJSON(needs.changed-files.outputs.changed_file_groups).neither_cudf_polars_nor_dask_cudf
     with:
       build_type: pull-request
       script: "ci/test_python_cudf.sh"
-      # https://github.com/NVIDIA/cudf/issues/23498
-      matrix_filter: map(select(.GPU != "gb300" and .GPU != "gh200"))
   conda-python-other-tests:
     # Tests for dask_cudf, cudf_polars, custreamz, cudf_kafka are separated for CI parallelism
     needs: [conda-python-build-noarch, changed-files]
@@ -505,15 +501,13 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/conda-python-tests.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/conda-python-tests.yaml@test-gb300
     if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python_conda
     with:
       build_type: pull-request
       # https://github.com/NVIDIA/cudf/pull/22381/changes#r3196736965
       container-options: "--cap-add CAP_SYS_PTRACE --shm-size=8g --ulimit=nofile=1000000:1000000"
       script: "ci/test_python_other.sh"
-      # https://github.com/NVIDIA/cudf/issues/23498
-      matrix_filter: map(select(.GPU != "gb300" and .GPU != "gh200"))
   conda-java-tests:
     needs: [conda-cpp-build, changed-files]
     permissions:
@@ -523,7 +517,7 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@test-gb300
     if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_java
     with:
       build_type: pull-request
@@ -593,7 +587,7 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@test-gb300
     if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_notebooks
     with:
       build_type: pull-request
@@ -610,7 +604,7 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@test-gb300
     if: fromJSON(needs.changed-files.outputs.changed_file_groups).build_docs
     with:
       build_type: pull-request
@@ -633,7 +627,7 @@ jobs:
       target-aws-region: ${{ secrets.NVIDIA_DOCS_AWS_REGION }}
       target-aws-secret-access-key: ${{ secrets.NVIDIA_DOCS_AWS_SECRET_ACCESS_KEY }}
       target-s3-bucket: ${{ secrets.NVIDIA_DOCS_S3_BUCKET }}
-    uses: rapidsai/shared-workflows/.github/workflows/publish-api-docs.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/publish-api-docs.yaml@test-gb300
     with:
       docs-projects: cudf,dask-cudf,libcudf
       dry-run: true
@@ -647,7 +641,7 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@test-gb300
     with:
       # build for every combination of arch and CUDA version, but only for the latest Python
       matrix_filter: group_by([.ARCH, (.CUDA_VER|split(".")|map(tonumber)|.[0])]) | map(max_by(.PY_VER|split(".")|map(tonumber)))
@@ -666,7 +660,7 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@test-gb300
     with:
       # build for every combination of arch and CUDA version, but only for the latest Python
       matrix_filter: group_by([.ARCH, (.CUDA_VER|split(".")|map(tonumber)|.[0])]) | map(max_by(.PY_VER|split(".")|map(tonumber)))
@@ -685,7 +679,7 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@test-gb300
     with:
       # Build a wheel for each CUDA x ARCH x minimum supported Python version
       matrix_filter: group_by({CUDA_VER, ARCH}) | map(min_by(.PY_VER | split(".") | map(tonumber)))
@@ -704,13 +698,11 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@test-gb300
     if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python_wheels
     with:
       build_type: pull-request
       script: ci/test_wheel_cudf_streaming.sh
-      # https://github.com/NVIDIA/cudf/issues/23498
-      matrix_filter: map(select(.GPU != "gb300" and .GPU != "gh200"))
   wheel-build-pylibcudf:
     needs: [build-details, checks, wheel-build-libcudf]
     permissions:
@@ -720,7 +712,7 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@test-gb300
     with:
       build_type: pull-request
       build-datetime: ${{ needs.build-details.outputs.build-datetime }}
@@ -739,7 +731,7 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@test-gb300
     with:
       build_type: pull-request
       build-datetime: ${{ needs.build-details.outputs.build-datetime }}
@@ -758,13 +750,11 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@test-gb300
     if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python_wheels && fromJSON(needs.changed-files.outputs.changed_file_groups).neither_cudf_polars_nor_dask_cudf
     with:
       build_type: pull-request
       script: ci/test_wheel_cudf.sh
-      # https://github.com/NVIDIA/cudf/issues/23498
-      matrix_filter: map(select(.GPU != "gb300" and .GPU != "gh200"))
   wheel-build-cudf-polars:
     needs: [build-details, wheel-build-pylibcudf]
     permissions:
@@ -774,7 +764,7 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@test-gb300
     with:
       # This selects "ARCH=amd64 + the latest supported Python + CUDA".
       matrix_filter: map(select(.ARCH == "amd64")) | group_by(.CUDA_VER|split(".")|map(tonumber)|.[0]) | map(max_by([(.PY_VER|split(".")|map(tonumber)), (.CUDA_VER|split(".")|map(tonumber))]))
@@ -794,11 +784,11 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@test-gb300
     if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python_wheels && fromJSON(needs.changed-files.outputs.changed_file_groups).neither_cudf_nor_dask_cudf
     with:
       # This selects "ARCH=amd64 + the latest supported Python + CUDA".
-      matrix_filter: map(select(.ARCH == "amd64")) | group_by(.CUDA_VER|split(".")|map(tonumber)|.[0]) | map(max_by([(.PY_VER|split(".")|map(tonumber)), (.CUDA_VER|split(".")|map(tonumber))]))
+      matrix_filter: map(select(.ARCH == "arm64")) | group_by(.CUDA_VER|split(".")|map(tonumber)|.[0]) | map(max_by([(.PY_VER|split(".")|map(tonumber)), (.CUDA_VER|split(".")|map(tonumber))]))
       build_type: pull-request
       container-options: "--cap-add CAP_SYS_PTRACE --shm-size=8g --ulimit=nofile=1000000:1000000"
       script: "env POLARS_VERSIONS=endpoints ci/test_wheel_cudf_polars.sh"
@@ -811,11 +801,11 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@test-gb300
     if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python_wheels && fromJSON(needs.changed-files.outputs.changed_file_groups).neither_cudf_nor_dask_cudf
     with:
       # This selects "ARCH=amd64 + the latest supported Python + CUDA".
-      matrix_filter: map(select(.ARCH == "amd64")) | group_by(.CUDA_VER|split(".")|map(tonumber)|.[0]) | map(max_by([(.PY_VER|split(".")|map(tonumber)), (.CUDA_VER|split(".")|map(tonumber))]))
+      matrix_filter: map(select(.ARCH == "arm64")) | group_by(.CUDA_VER|split(".")|map(tonumber)|.[0]) | map(max_by([(.PY_VER|split(".")|map(tonumber)), (.CUDA_VER|split(".")|map(tonumber))]))
       build_type: pull-request
       script: "ci/test_cudf_polars_polars_tests.sh"
   wheel-build-dask-cudf:
@@ -827,7 +817,7 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-build.yaml@test-gb300
     with:
       # This selects "ARCH=amd64 + the latest supported Python + CUDA".
       matrix_filter: map(select(.ARCH == "amd64")) | group_by(.CUDA_VER|split(".")|map(tonumber)|.[0]) | map(max_by([(.PY_VER|split(".")|map(tonumber)), (.CUDA_VER|split(".")|map(tonumber))]))
@@ -847,11 +837,11 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@test-gb300
     if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python_wheels && fromJSON(needs.changed-files.outputs.changed_file_groups).not_cudf_polars
     with:
       # This selects "ARCH=amd64 + the latest supported Python + CUDA".
-      matrix_filter: map(select(.ARCH == "amd64")) | group_by(.CUDA_VER|split(".")|map(tonumber)|.[0]) | map(max_by([(.PY_VER|split(".")|map(tonumber)), (.CUDA_VER|split(".")|map(tonumber))]))
+      matrix_filter: map(select(.ARCH == "arm64")) | group_by(.CUDA_VER|split(".")|map(tonumber)|.[0]) | map(max_by([(.PY_VER|split(".")|map(tonumber)), (.CUDA_VER|split(".")|map(tonumber))]))
       build_type: pull-request
       script: ci/test_wheel_dask_cudf.sh
   # build cudf with benchmarks but disable for cudf_streaming since we can't use MPI/UCX in wheel-based builds
@@ -864,7 +854,7 @@ jobs:
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
     needs: telemetry-setup
-    uses: rapidsai/shared-workflows/.github/workflows/build-in-devcontainer.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/build-in-devcontainer.yaml@test-gb300
     with:
       arch: '["amd64", "arm64"]'
       cuda: '["13.3"]'
@@ -887,12 +877,11 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@test-gb300
     if: (fromJSON(needs.changed-files.outputs.changed_file_groups).test_python_wheels || fromJSON(needs.changed-files.outputs.changed_file_groups).test_cudf_pandas) && fromJSON(needs.changed-files.outputs.changed_file_groups).neither_cudf_polars_nor_dask_cudf
     with:
       # This selects the latest supported Python + CUDA minor versions for each ARCH/CUDA major version combo
-      # Filter out GB300 due to https://github.com/NVIDIA/cudf/issues/23498
-      matrix_filter: group_by([(.ARCH), (.CUDA_VER|split(".")|map(tonumber)|.[0])]) | map(max_by([(.PY_VER|split(".")|map(tonumber)), (.CUDA_VER|split(".")|map(tonumber))])) | map(select(.GPU != "gb300" and .GPU != "gh200"))
+      matrix_filter: group_by([(.ARCH), (.CUDA_VER|split(".")|map(tonumber)|.[0])]) | map(max_by([(.PY_VER|split(".")|map(tonumber)), (.CUDA_VER|split(".")|map(tonumber))]))
       build_type: pull-request
       script: ci/cudf_pandas_scripts/run_tests.sh
   third-party-integration-tests-cudf-pandas:
@@ -904,7 +893,7 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@test-gb300
     if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python_conda && fromJSON(needs.changed-files.outputs.changed_file_groups).neither_cpp_nor_cudf_polars_nor_dask_cudf
     with:
       build_type: pull-request
@@ -967,7 +956,8 @@ jobs:
       id-token: write
       packages: read
       pull-requests: read
-    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@main
+    secrets: inherit # zizmor: ignore[secrets-inherit]
+    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@test-gb300
     if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python_wheels && fromJSON(needs.changed-files.outputs.changed_file_groups).neither_cpp_nor_cudf_polars_nor_dask_cudf
     with:
       build_type: pull-request
@@ -1012,7 +1002,7 @@ jobs:
       packages: read
       pull-requests: read
     secrets: inherit # zizmor: ignore[secrets-inherit]
-    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@main
+    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@test-gb300
     if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python_conda && fromJSON(needs.changed-files.outputs.changed_file_groups).neither_cpp_nor_cudf_polars_nor_dask_cudf
     with:
       build_type: pull-request
diff --git a/cpp/CMakeLists.txt b/cpp/CMakeLists.txt
index 8e237b08b128..4ee1a805d369 100644
--- a/cpp/CMakeLists.txt
+++ b/cpp/CMakeLists.txt
@@ -1547,6 +1547,7 @@ if(CUDF_BUILD_TESTUTIL)
 endif()
 
 # * build cudf_identify_stream_usage --------------------------------------------------------------
+message(STATUS "CUDF: Build with stream testing enabled: ${CUDF_BUILD_STREAMS_TEST_UTIL}")
 if(CUDF_BUILD_STREAMS_TEST_UTIL)
   # Libraries for stream-related testing. We build the library twice, one with STREAM_MODE_TESTING
   # on and one with it set to off. Each test will then be configured to use the appropriate library
diff --git a/cpp/include/cudf_test/column_wrapper.hpp b/cpp/include/cudf_test/column_wrapper.hpp
index e749a086cd6b..7c473bcb97fe 100644
--- a/cpp/include/cudf_test/column_wrapper.hpp
+++ b/cpp/include/cudf_test/column_wrapper.hpp
@@ -850,6 +850,7 @@ class strings_column_wrapper : public detail::column_wrapper {
       cudf::detail::make_device_uvector(offsets, stream, mr.get_output_mr()),
       rmm::device_buffer{},
       0);
+    cudf::test::get_default_stream().synchronize();
     wrapped =
       cudf::make_strings_column(num_strings, std::move(d_offsets), d_chars.release(), 0, {});
   }
@@ -1890,6 +1891,7 @@ class lists_column_wrapper : public detail::column_wrapper {
     // construct the list column
     wrapped = make_lists_column(
       cols.size(), std::move(offsets), std::move(data), null_count, std::move(null_mask));
+    cudf::test::get_default_stream().synchronize();
   }
 
   /**
diff --git a/cpp/src/interop/from_arrow_device.cu b/cpp/src/interop/from_arrow_device.cu
index 3a79b001bad7..08060019c510 100644
--- a/cpp/src/interop/from_arrow_device.cu
+++ b/cpp/src/interop/from_arrow_device.cu
@@ -198,7 +198,7 @@ dispatch_tuple_t dispatch_from_arrow_device::operator()<cudf::string_view>(
     // gather strings into output column
     auto out_col = cudf::make_strings_column(d_indices, stream, mr);
     owned.emplace_back(std::move(out_col));
-    cudf::detail::sync_stream(stream);
+    cudf::detail::sync_stream(stream);  // variadic_ptrs goes out of scope
     return std::make_tuple<column_view, owned_columns_t>(owned.front()->view(), std::move(owned));
   }
 
diff --git a/cpp/src/interop/from_arrow_host_strings.cu b/cpp/src/interop/from_arrow_host_strings.cu
index fbc6869c84d2..94498cece8c1 100644
--- a/cpp/src/interop/from_arrow_host_strings.cu
+++ b/cpp/src/interop/from_arrow_host_strings.cu
@@ -114,7 +114,7 @@ std::unique_ptr<column> from_arrow_stringview(ArrowSchemaView const* schema,
       return {data, size};
     });
 
-  cudf::detail::sync_stream(stream);
+  cudf::detail::sync_stream(stream);  // variadic_ptrs goes out of scope
   return cudf::make_strings_column(d_indices, stream, mr);
 }
 
diff --git a/cpp/src/io/orc/stripe_enc.cu b/cpp/src/io/orc/stripe_enc.cu
index 7ea3b8de315d..e5d3087d80aa 100644
--- a/cpp/src/io/orc/stripe_enc.cu
+++ b/cpp/src/io/orc/stripe_enc.cu
@@ -1425,7 +1425,7 @@ void decimal_sizes_to_offsets(device_2dspan<rowgroup_rows const> rg_bounds,
   auto const num_blocks = elem_sizes.size() * rg_bounds.size().first;
   decimal_sizes_to_offsets_kernel<block_size>
     <<<num_blocks, block_size, 0, stream.get()>>>(rg_bounds, d_sizes);
-  stream.sync();
+  stream.sync();  // h_sizes goes out of scope
 }
 
 }  // namespace cudf::io::orc::detail
diff --git a/cpp/src/io/orc/writer_impl.cu b/cpp/src/io/orc/writer_impl.cu
index dc864799f277..9290b73daaea 100644
--- a/cpp/src/io/orc/writer_impl.cu
+++ b/cpp/src/io/orc/writer_impl.cu
@@ -1513,7 +1513,7 @@ encoded_footer_statistics finish_statistic_blobs(Footer const& footer,
       file_blobs[i].assign(stat_begin, stat_end);
     }
 
-    stream.sync();
+    stream.sync();  // h_stat_chunks goes out of scope
     return {{}, std::move(file_blobs)};
   }
 
@@ -1596,7 +1596,7 @@ encoded_footer_statistics finish_statistic_blobs(Footer const& footer,
     file_blobs[i].assign(stat_begin, stat_end);
   }
 
-  stream.sync();
+  stream.sync();  // h_srcs, h_dsts, h_lens go out of scope
   return {std::move(stripe_blobs), std::move(file_blobs)};
 }
 
@@ -2042,7 +2042,7 @@ orc_table_view make_orc_table_view(table_view const& table,
     },
     stream);
 
-  stream.sync();
+  stream.sync();  // type_kinds goes out of scope
   return {std::move(orc_columns),
           std::move(d_orc_columns),
           str_col_indexes,
diff --git a/cpp/src/io/parquet/experimental/deletion_vectors_helpers.cu b/cpp/src/io/parquet/experimental/deletion_vectors_helpers.cu
index 4a061ad22d86..6c212322430f 100644
--- a/cpp/src/io/parquet/experimental/deletion_vectors_helpers.cu
+++ b/cpp/src/io/parquet/experimental/deletion_vectors_helpers.cu
@@ -132,7 +132,7 @@ std::unique_ptr<cudf::column> compute_row_index_column(
     row_indices_iter,
     row_indices_iter);
 
-  stream.sync();
+  stream.sync();  // row_group_span_offsets goes out of scope
   return std::make_unique<cudf::column>(cudf::data_type{cudf::type_id::UINT64},
                                         num_rows,
                                         std::move(row_indices),