Bug 698439

Summary:	Wrong use of memcpy in zsh
Product:	[Fedora] Fedora	Reporter:	Felipe Contreras <felipe.contreras>
Component:	zsh	Assignee:	Dominic Hopf <dmaphy>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	16	CC:	dmaphy, gholms, james.antill
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-02-02 21:55:38 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:
Bug Blocks:	696096

Description Felipe Contreras 2011-04-20 21:33:05 UTC

Description of problem: zsh uses memcpy wrongly

Version-Release number of selected component (if applicable): 4.3.10-5

Follow the instructions in parent bug #696096.

Paste the following into the command line:

foo:            baaaaaaaaaaaaaaaaaaaaaaaaaar
foo:            baaaaaaaaaaaaaaaaaaaaaaaaaar
foo:            baaaaaaaaaaaaaaaaaaaaaaaaaar

A crash occurs.

Comment 1 Dominic Hopf 2011-12-17 19:01:27 UTC

Trying to reproduce the issue with the instructions you described 696096 is not causing a crash anymore, unfortunately. I was able to point out lines like this in /var/log/messages instead:

Dec 17 19:56:21 hellraiser ksmtuned[1127]: ERROR: ld.so: object '/tmp/memcpy_check.so' from /etc/ld.so.preload cannot be preloaded: ignored.


For the record: I have an F16 installation here and run Zsh version 4.3.14 which is available in updates-testing.


Is there any other way to maybe reproduce this issue or can we assume this has been fixed in the meanwhile?

Comment 2 Felipe Contreras 2011-12-22 16:28:25 UTC

(In reply to comment #1)
> Trying to reproduce the issue with the instructions you described 696096 is not
> causing a crash anymore, unfortunately. I was able to point out lines like this
> in /var/log/messages instead:
> 
> Dec 17 19:56:21 hellraiser ksmtuned[1127]: ERROR: ld.so: object
> '/tmp/memcpy_check.so' from /etc/ld.so.preload cannot be preloaded: ignored.

You must be doing something wrong then.

Please use attachment #493497 [details].

And do this:
% gcc -O2 -fPIC -Wall -Werror memcpy_check.c --shared -o /tmp/memcpy_check.so
% echo /tmp/memcpy_check.so | sudo tee /etc/ld.so.preload

Make sure that all these commands succeed, that ld.so.preload contains /tmp/memcpy_check.so, and that 'file /tmp/memcpy_check.so' returns something that is compatible to your machine.

FTR, still crashes here.

Comment 3 Felipe Contreras 2012-02-02 21:55:38 UTC

Seems to be fixed now. Maybe 4.3.14, or maybe 4.3.15.