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 }"
....