PS-10014 feature: Add Valgrind testing to the CI

https://perconadev.atlassian.net/browse/PS-10014

Added new "GCC 14 Valgrind" matrix job to GitHub Actions that builds
project using "debug_gcc14" CMake preset and run MTR with '--valgrind'
option.

Author: percona-ysorokin

.github/workflows/cmake.yml

@@ -67,12 +67,14 @@ jobs:
             name: "GCC 14 Debug",
             label: "debug_gcc14",
             run_mtr: true,
+            mtr_options: "--repeat=2",
             run_ctest: true
           }
         - {
             name: "GCC 14 RelWithDebInfo",
             label: "release_gcc14",
             run_mtr: true,
+            mtr_options: "--repeat=2",
             run_ctest: true
           }
         - {
@@ -82,6 +84,13 @@ jobs:
             mtr_options: "--sanitize",
             run_ctest: true
           }
+        - {
+            name: "GCC 14 Valgrind",
+            label: "debug_gcc14",
+            run_mtr: true,
+            mtr_options: "--valgrind",
+            run_ctest: true
+          }
         - {
             name: "Clang 20 Debug",
             label: "debug_clang20",
@@ -136,6 +145,15 @@ jobs:
       run: |
         sudo apt-get install g++-14
 
+    - name: Install Valgrind on ubuntu
+      if: contains(matrix.config.mtr_options, '--valgrind')
+      # installing Valgrind 3.25 here from Ubuntu 25.10 that has support for syscall 333
+      run: |
+        sudo apt-get install libc6-dbg
+        wget -q http://mirrors.kernel.org/ubuntu/pool/main/v/valgrind/valgrind_3.25.1-0ubuntu1_amd64.deb
+        sudo dpkg -i valgrind_3.25.1-0ubuntu1_amd64.deb
+        rm -f valgrind_3.25.1-0ubuntu1_amd64.deb
+
     - name: Fixing libaio1 for MySQL Server tarball
       if: matrix.config.run_mtr
       run: |
@@ -300,7 +318,7 @@ jobs:
       run: |
         BINSRV=${{github.workspace}}/src-build-${{matrix.config.label}}/binlog_server ./mtr \
           --vardir=${{runner.temp}}/mtrvardir80 \
-          --force --max-test-fail=0 --retry=0 --nounit-tests --big-test --repeat=2 --parallel=${{steps.cpu-cores.outputs.count}} \
+          --force --max-test-fail=0 --retry=0 --nounit-tests --big-test --parallel=${{steps.cpu-cores.outputs.count}} \
           --suite=binlog_streaming ${{matrix.config.mtr_options}}
 
     - name: MTR 8.4 tests
@@ -309,7 +327,7 @@ jobs:
       run: |
         BINSRV=${{github.workspace}}/src-build-${{matrix.config.label}}/binlog_server ./mtr \
           --vardir=${{runner.temp}}/mtrvardir84 \
-          --force --max-test-fail=0 --retry=0 --nounit-tests --big-test --repeat=2 --parallel=${{steps.cpu-cores.outputs.count}} \
+          --force --max-test-fail=0 --retry=0 --nounit-tests --big-test --parallel=${{steps.cpu-cores.outputs.count}} \
           --suite=binlog_streaming ${{matrix.config.mtr_options}}
 
     - name: CTest