Re: [PATCH v2] tests/tcg: Skip failing ppc64 multi-threaded tests

[Alex Bennée]

Nicholas Piggin <npiggin@gmail.com> writes:

> In Gitlab CI, some ppc64 multi-threaded tcg tests crash when run in the
> clang-user job with an assertion failure in glibc that seems to
> indicate corruption:
>
>   signals: allocatestack.c:223: allocate_stack:
>     Assertion `powerof2 (pagesize_m1 + 1)' failed.
>
> Disable these tests for now.
>
> Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
> ---
>  tests/tcg/ppc64/Makefile.target | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
>
> diff --git a/tests/tcg/ppc64/Makefile.target b/tests/tcg/ppc64/Makefile.target
> index 8c3e4e4038..509a20be2b 100644
> --- a/tests/tcg/ppc64/Makefile.target
> +++ b/tests/tcg/ppc64/Makefile.target
> @@ -11,6 +11,18 @@ config-cc.mak: Makefile
>  
>  -include config-cc.mak
>  
> +# multi-threaded tests are known to fail (e.g., clang-user CI job)
> +# See: https://gitlab.com/qemu-project/qemu/-/issues/2456

Given this is only a problem with clang can we only apply these
workaround if we detect "clang" in $(CC)?

> +run-signals: signals
> +     $(call skip-test, $<, "BROKEN (flaky with clang) ")
> +run-plugin-signals-with-%:
> +     $(call skip-test, $<, "BROKEN (flaky with clang) ")
> +
> +run-threadcount: threadcount
> +     $(call skip-test, $<, "BROKEN (flaky with clang) ")
> +run-plugin-threadcount-with-%:
> +     $(call skip-test, $<, "BROKEN (flaky with clang) ")
> +
>  ifneq ($(CROSS_CC_HAS_POWER8_VECTOR),)
>  PPC64_TESTS=bcdsub non_signalling_xscv
>  endif

-- 
Alex Bennée
Virtualisation Tech Lead @ Linaro