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 48813383C7FB; Tue, 13 Dec 2022 19:13:58 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 48813383C7FB
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org;
	s=default; t=1670958838;
	bh=qJr6SeA0PLf1G7dS92SZMY0t7Zf9DTcSj/9vsSzENgU=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=NzpVTIZyiJ221zkYt9cjC6vilTkSeUoNA9WdUwgKhZATZ0531IaZhw5iTB678Gv3M
	 yPK2rR1/PUpSpVAZF9Oq2cIeMXvpIvI/RRTEAuWJGVnHdq6A1rWLZas9H/H3Vd+lxU
	 EUKZU+hFm+JnZTLfZ2JG6mW3RUbf7if/E2faglQM=
From: "goldstein.w.n at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/29863] Segmentation fault in memcmp-sse2.S if memory
 contents can concurrently change
Date: Tue, 13 Dec 2022 19:13:57 +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: 2.36
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: goldstein.w.n at gmail dot com
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: unassigned at sourceware dot org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: cc
Message-ID: <bug-29863-131-5Mel5KQT9l@http.sourceware.org/bugzilla/>
In-Reply-To: <bug-29863-131@http.sourceware.org/bugzilla/>
References: <bug-29863-131@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
List-Id: <glibc-bugs.sourceware.org>

https://sourceware.org/bugzilla/show_bug.cgi?id=3D29863

Noah Goldstein <goldstein.w.n at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |goldstein.w.n at gmail dot=
 com

--- Comment #7 from Noah Goldstein <goldstein.w.n at gmail dot com> ---
The fix is basically just:
https://sourceware.org/git/?p=3Dglibc.git;a=3Dblob;f=3Dsysdeps/x86_64/multi=
arch/memcmp-sse2.S;h=3Dafd450d0206d6633da9fbc4607a7fa6aeb4e137c;hb=3DHEAD#l=
46
```
-#   define SIZE_OFFSET (CHAR_PER_VEC * 2)
+#   define SIZE_OFFSET 0
```

Want to add the other functions / implementations are likely
also affected by a similar bug.

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