Google Sanitizers

VPP is instrumented to support Google Sanitizers. As of today, only AddressSanitizer is supported, both for GCC and clang.

AddressSanitizer

AddressSanitizer (aka ASan) is a memory error detector for C/C++. Think Valgrind but much faster.

In order to use it, VPP must be recompiled with ASan support. It is implemented as a cmake build option, so all VPP targets should be supported. For example:

# build a debug image with ASan support:
$ make rebuild VPP_EXTRA_CMAKE_ARGS=-DVPP_ENABLE_SANITIZE_ADDR=ON
....

# build a release image with ASan support:
$ make rebuild-release VPP_EXTRA_CMAKE_ARGS=-DVPP_ENABLE_SANITIZE_ADDR=ON
....

# build packages in debug mode with ASan support:
$ make pkg-deb-debug VPP_EXTRA_CMAKE_ARGS=-DVPP_ENABLE_SANITIZE_ADDR=ON
....

# run GBP plugin tests in debug mode with ASan
$ make test-debug TEST=test_gbp VPP_EXTRA_CMAKE_ARGS=-DVPP_ENABLE_SANITIZE_ADDR=ON
....

Once VPP has been built with ASan support you can use it as usual including under gdb:

$ gdb --args $PWD/build-root/install-vpp_debug-native/vpp/bin/vpp "unix { interactive }"
....