Bug 1313308

Summary: invalid fastbin entry (free), missing glibc patch
Product: Red Hat Enterprise Linux 7 Reporter: Jaroslav Reznik <jreznik>
Component: glibcAssignee: Carlos O'Donell <codonell>
Status: CLOSED ERRATA QA Contact: qe-baseos-tools-bugs
Severity: high Docs Contact:
Priority: urgent    
Version: 7.0CC: ashankar, a.stimec, bkunal, codonell, cww, dkochuka, efi, fweimer, jkachuck, ken.verma, magoldma, mcermak, mnavrati, mnewsome, mpetlan, pfrankli, rcyriac, sumeet.keswani, tfrazier, trinh.dao, zpytela
Target Milestone: rcKeywords: Patch, ZStream
Target Release: ---   
Hardware: Unspecified   
OS: Linux   
Whiteboard:
Fixed In Version: glibc-2.17-106.el7_2.6 Doc Type: Bug Fix
Doc Text:
Previously, certain code paths used by the C library's memory allocator "fastbins" feature, which were enabled by default, were not thread-safe. When the non-safe code paths executed, the code paths could cause corruption in the allocator, which cause the application terminate unexpectedly with a segmentation fault. The thread-unsafe code paths have been made thread-safe, and the described problem no longer occurs.
Story Points: ---
Clone Of: 1305406 Environment:
Last Closed: 2016-05-12 09:59:37 UTC Type: ---
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: 1305406    
Bug Blocks: 1097825    

Description Jaroslav Reznik 2016-03-01 11:23:23 UTC
This bug has been copied from bug #1305406 and has been proposed
to be backported to 7.2 z-stream (EUS).

Comment 8 Michael Petlan 2016-04-22 16:39:59 UTC
Presence of the patch checked in glibc-2.17-106.el7_2.106 build tree.

Comment 9 Michael Petlan 2016-04-22 17:42:59 UTC
Since there is no reliable reproducer, we have to be content with SanityOnly here.

Comment 11 errata-xmlrpc 2016-05-12 09:59:37 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, 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://rhn.redhat.com/errata/RHBA-2016-1030.html