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Bug 985419

Summary: p11-kit: realloc behavior
Product: Red Hat Enterprise Linux 7 Reporter: Florian Weimer <fweimer>
Component: p11-kitAssignee: Daiki Ueno <dueno>
Status: CLOSED ERRATA QA Contact: Alicja Kario <hkario>
Severity: low Docs Contact:
Priority: low    
Version: 7.1CC: hkario, nmavrogi, stefw
Target Milestone: rc   
Target Release: 7.1   
Hardware: Unspecified   
OS: Windows   
Whiteboard:
Fixed In Version: p11-kit-0.20.4-1.el7 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2017-08-01 16:52:09 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: 983512    
Attachments:
Description Flags
common: Don't do repeated linear reallocation of array memory none

Description Florian Weimer 2013-07-17 12:59:09 UTC
Some mallocs (notably on Windows) have really poor behavior when called repeatedly with a linearly growing buffer.

This appears to affect p11-kit/pin.c:p11_kit_pin_file_callback() and common/array.c:maybe_expand_array().  An exponential growth policy would prevent that.

Comment 2 Stef Walter 2013-07-17 18:36:44 UTC
Thanks. Will work on this later in p11-kit git master, rather than the stable branch.

Comment 5 Stef Walter 2014-08-07 06:40:11 UTC
Created attachment 924720 [details]
common: Don't do repeated linear reallocation of array memory

Some mallocs (notably on Windows) have really poor behavior when
called repeatedly with a linearly growing buffer.

Comment 6 Stef Walter 2014-08-07 06:41:30 UTC
Didn't fix the case in p11_kit_pin_file_callback() as it only has a couple possible iterations, and very unlikely to realloc() in any case.

Comment 10 Stef Walter 2014-10-13 16:16:08 UTC
This fix was not included in the stable 0.20.x series of p11-kit. It is in the 0.22.x series. Removing from RHEL 7.1.

Comment 12 Mike McCune 2016-03-28 23:37:25 UTC
This bug was accidentally moved from POST to MODIFIED via an error in automation, please see mmccune with any questions

Comment 16 errata-xmlrpc 2017-08-01 16:52:09 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://access.redhat.com/errata/RHEA-2017:1981