Bug 1871394

Summary:	glibc: Fix AVX2 off-by-one error in strncmp (swbz#25933)
Product:	Red Hat Enterprise Linux 8	Reporter:	Carlos O'Donell <codonell>
Component:	glibc	Assignee:	Patsy Griffin <pfrankli>
Status:	CLOSED ERRATA	QA Contact:	Sergey Kolosov <skolosov>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	8.4	CC:	ashankar, codonell, dj, fweimer, mcermak, mnewsome, pfrankli, sipoyare, skolosov, vmukhame
Target Milestone:	rc	Keywords:	Triaged
Target Release:	8.0	Flags:	pm-rhel: mirror+
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	glibc-2.28-130.el8	Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-05-18 14:36:34 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1877115

Description Carlos O'Donell 2020-08-23 02:31:05 UTC

Backport the following patches to improve the Intel performance and implementation:

76d5b2f002a1243ddba06bd646249553353f4322
x86: Update Intel Atom processor family optimization

75870237ff3bb363447b03f4b0af100227570910
Fix avx2 strncmp offset compare condition check [BZ #25933]

Comment 2 Carlos O'Donell 2020-09-08 20:43:44 UTC

I'm reworking this bug to only include the AVX2 fix.

Comment 9 Sergey Kolosov 2020-10-09 13:40:13 UTC

Tested with string/test-strncmp, string/test-strcmp.

Comment 17 errata-xmlrpc 2021-05-18 14:36:34 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Moderate: glibc security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2021:1585