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From: "hjl.tools at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/27398] x86: Sporadic failures in tst-cpu-features-cpuinfo
Date: Fri, 12 Feb 2021 13:51:48 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D27398

--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Siddhesh Poyarekar from comment #0)
> The following tests fail sporadically on my machine:
>=20
> Checking HAS_CPU_FEATURE (HLE):
>   HAS_CPU_FEATURE (HLE): 1
>   cpuinfo (hle): 0
>  *** failure ***
> --
> Checking HAS_CPU_FEATURE (RTM):
>   HAS_CPU_FEATURE (RTM): 1
>   cpuinfo (rtm): 0
>  *** failure ***
>=20
> Whenever it succeeds, HAS_CPU_FEATURE is 0 in both cases but every once i=
n a
> while it returns 1.
>=20

This sounds like CPUID instruction returns different value on your procseso=
rs.

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