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SubjectRe: [PATCH v1] perf build: Pretend scandirat is missing with msan
On Wed, Mar 20, 2024 at 09:32:44AM -0700, Ian Rogers wrote:
> Memory sanitizer lacks an interceptor for scandirat, reporting all
> memory it allocates as uninitialized. Memory sanitizer has a scandir
> interceptor so use the fallback function in this case. This allows
> perf test to run under memory sanitizer.

Thanks, applied to perf-tools-next,

- Arnaldo

> Signed-off-by: Ian Rogers <irogers@google.com>
> ---
> tools/perf/Makefile.config | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
> index 1fe8df97fe88..74e0b17050b5 100644
> --- a/tools/perf/Makefile.config
> +++ b/tools/perf/Makefile.config
> @@ -486,7 +486,10 @@ ifdef NO_DWARF
> endif
>
> ifeq ($(feature-scandirat), 1)
> - CFLAGS += -DHAVE_SCANDIRAT_SUPPORT
> + # Ignore having scandirat with memory sanitizer that lacks an interceptor.
> + ifeq ($(filter s% -fsanitize=memory%,$(EXTRA_CFLAGS),),)
> + CFLAGS += -DHAVE_SCANDIRAT_SUPPORT
> + endif
> endif
>
> ifeq ($(feature-sched_getcpu), 1)
> --
> 2.44.0.291.gc1ea87d7ee-goog

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