linux-kernel - Re: selftests: arm64: fp-stress: KERNEL-1-0/3-0/4-0/6-0 - gcc-13 - Failed

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Date: Fri, 14 Jun 2024 16:23:34 +0100
From: Mark Brown <broonie@...nel.org>
To: Naresh Kamboju <naresh.kamboju@...aro.org>
Cc: Linux ARM <linux-arm-kernel@...ts.infradead.org>,
	open list <linux-kernel@...r.kernel.org>,
	"open list:KERNEL SELFTEST FRAMEWORK" <linux-kselftest@...r.kernel.org>,
	lkft-triage@...ts.linaro.org,
	Linux Regressions <regressions@...ts.linux.dev>,
	Arnd Bergmann <arnd@...db.de>,
	Catalin Marinas <catalin.marinas@....com>,
	Mark Rutland <mark.rutland@....com>,
	James Morse <james.morse@....com>,
	Aishwarya TCV <Aishwarya.TCV@....com>
Subject: Re: selftests: arm64: fp-stress: KERNEL-1-0/3-0/4-0/6-0 - gcc-13 -
 Failed - clang-pass

On Thu, Jun 13, 2024 at 07:21:15PM +0530, Naresh Kamboju wrote:
> The following selftests: arm64 tests failed on FVP-aemva test and kernel
> built with gcc-13 but pass with clang.
> 
> arm64_fp-stress_KERNEL-1-0/3-0/4-0/6-0 - gcc-13 - Failed
> arm64_fp-stress_KERNEL-1-0/3-0/4-0/6-0 - clang-18 - Pass

This seems vanishingly unlikely to be compiler related without some
other information suggesting why it might compiler related.  It is more
likely that your GCC run suffered the very intermittent glitch which
we've been aware of for a while.

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