From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <sourceware-bugzilla@sourceware.org>
Received: by sourceware.org (Postfix, from userid 48)
 id 1B8C63857C5B; Tue, 18 Jan 2022 16:38:21 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 1B8C63857C5B
From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/27398] x86: Improve testing false positive for
 tst-cpu-features-cpuinfo with bad hardware.
Date: Tue, 18 Jan 2022 16:38:20 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: glibc
X-Bugzilla-Component: libc
X-Bugzilla-Version: 2.35
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: carlos at redhat dot com
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: hjl.tools at gmail dot com
X-Bugzilla-Target-Milestone: 2.35
X-Bugzilla-Flags: security-
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-27398-131-IN46IxfFaI@http.sourceware.org/bugzilla/>
In-Reply-To: <bug-27398-131@http.sourceware.org/bugzilla/>
References: <bug-27398-131@http.sourceware.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://sourceware.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-BeenThere: glibc-bugs@sourceware.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Glibc-bugs mailing list <glibc-bugs.sourceware.org>
List-Unsubscribe: <https://sourceware.org/mailman/options/glibc-bugs>,
 <mailto:glibc-bugs-request@sourceware.org?subject=unsubscribe>
List-Archive: <https://sourceware.org/pipermail/glibc-bugs/>
List-Help: <mailto:glibc-bugs-request@sourceware.org?subject=help>
List-Subscribe: <https://sourceware.org/mailman/listinfo/glibc-bugs>,
 <mailto:glibc-bugs-request@sourceware.org?subject=subscribe>
X-List-Received-Date: Tue, 18 Jan 2022 16:38:21 -0000

https://sourceware.org/bugzilla/show_bug.cgi?id=3D27398

--- Comment #18 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Carlos O'Donell from comment #17)
> (In reply to H.J. Lu from comment #16)
> > Created attachment 13914 [details]
> > The v4 patch
> >=20
> > Please try this.
>=20
> That works. Extending it to cover 0xc stepping fixes both failures.
>=20
> As one of the Intel maintainers for glibc I'm going to rely on your
> judgement here if extending the errata to cover 0xc is acceptable. Worst
> case this is pessimistic for this hardware and we get user feedback that
> they want the range adjusted.

Note that Siddhesh's hardware is also stepping 12, so this isn't something
random, but a specific flaw with this stepping or a kernel issue. But we can
sort out the latter with more time, and blacklisting this CPU seems correct=
 for
now.

--=20
You are receiving this mail because:
You are on the CC list for the bug.=