ci: add coverity scan action

Add an action for scanning using scan.coverity.com.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

Author: nashif

.github/workflows/coverity.yml

@@ -0,0 +1,125 @@
+name: Coverity Code Scanning
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+      - v*-branch
+      - collab-*
+permissions:
+  contents: read
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  CoverityScanCode:
+    if: github.repository_owner == 'zephyrproject-rtos'
+    runs-on:
+      group: zephyr-runner-v2-linux-x64-4xlarge
+    container:
+      image: ghcr.io/zephyrproject-rtos/ci-repo-cache:v0.28.0.20250523
+      options: '--entrypoint /bin/bash'
+    steps:
+      - name: Print cloud service information
+        run: |
+          echo "ZEPHYR_RUNNER_CLOUD_PROVIDER = ${ZEPHYR_RUNNER_CLOUD_PROVIDER}"
+          echo "ZEPHYR_RUNNER_CLOUD_NODE = ${ZEPHYR_RUNNER_CLOUD_NODE}"
+          echo "ZEPHYR_RUNNER_CLOUD_POD = ${ZEPHYR_RUNNER_CLOUD_POD}"
+
+      - name: Apply container owner mismatch workaround
+        run: |
+          # FIXME: The owner UID of the GITHUB_WORKSPACE directory may not
+          #        match the container user UID because of the way GitHub
+          #        Actions runner is implemented. Remove this workaround when
+          #        GitHub comes up with a fundamental fix for this problem.
+          git config --global --add safe.directory ${GITHUB_WORKSPACE}
+
+      - name: Clone cached Zephyr repository
+        continue-on-error: true
+        run: |
+          git clone --shared /repo-cache/zephyrproject/zephyr .
+          git remote set-url origin ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}
+
+      - name: Checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+          fetch-depth: 0
+          persist-credentials: false
+
+      - name: Environment Setup
+        run: |
+          if [ "${{github.event_name}}" = "pull_request" ]; then
+            git config --global user.email "bot@zephyrproject.org"
+            git config --global user.name "Zephyr Builder"
+            rm -fr ".git/rebase-apply"
+            rm -fr ".git/rebase-merge"
+            git rebase origin/${BASE_REF}
+            git clean -f -d
+            git log  --pretty=oneline | head -n 10
+          fi
+          echo "$HOME/.local/bin" >> $GITHUB_PATH
+          echo "$HOME/.cargo/bin" >> $GITHUB_PATH
+
+          west init -l . || true
+          west config manifest.group-filter -- +ci,+optional
+          west config --global update.narrow true
+          west update --path-cache /repo-cache/zephyrproject 2>&1 1> west.update.log || west update --path-cache /repo-cache/zephyrproject 2>&1 1> west.update.log || ( rm -rf ../modules ../bootloader ../tools && west update --path-cache /repo-cache/zephyrproject)
+          west forall -c 'git reset --hard HEAD'
+
+          echo "ZEPHYR_SDK_INSTALL_DIR=/opt/toolchains/zephyr-sdk-$( cat SDK_VERSION )" >> $GITHUB_ENV
+
+      - name: Check Environment
+        run: |
+          cmake --version
+          gcc --version
+          cargo --version
+          rustup target list --installed
+          ls -la
+          echo "github.ref: ${{ github.ref }}"
+          echo "github.base_ref: ${{ github.base_ref }}"
+          echo "github.ref_name: ${{ github.ref_name }}"
+
+      - name: SCA Setup
+        uses: zephyrproject-rtos/action-sca-setup@main
+        with:
+          tool-name: coverity
+          install-dir: coverity
+          s3-access-key-id: ${{ secrets.TOOLDIST_ACCESS_KEY }}
+          s3-secret-access-key: ${{ secrets.TOOLDIST_SECRET_ACCESS_KEY }}
+
+      - name: Set Up Python 3.12
+        uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
+        with:
+          python-version: 3.12
+          cache: pip
+          cache-dependency-path: scripts/requirements-actions.txt
+
+      - name: install-packages
+        run: |
+          pip install -r scripts/requirements-actions.txt --require-hashes
+
+      - name: Check Env
+        run: |
+          export COVERITY_OUTPUT_DIR=${PWD}/cov-int
+          ./scripts/twister -j 16 -p qemu_x86  -T tests/kernel/threads --build-only -v  -xZEPHYR_SCA_VARIANT=coverity
+
+          tar -cJvf coverity-results.tar.xz cov-int
+
+          ver=`git describe`
+          echo "PAYLOAD_VERSION=${ver}" >> $GITHUB_ENV
+          echo "PAYLOAD_DESC=${ver}" >> $GITHUB_ENV
+
+      - name: Analyze
+        uses: zephyrproject-rtos/action-sca-setup/analyze@main
+        with:
+          tool-name: coverity
+          payload: coverity-results.tar.xz
+          service: https://scan.coverity.com/builds?project=Zephyr+Testing
+          user: ${{ secrets.COVERITY_USER }}
+          token: ${{ secrets.COVERITY_TOKEN }}
+          version: ${{ env.PAYLOAD_VERSION }}
+          description: ${{ env.PAYLOAD_DESC }}