Bug 652857

Summary:	misaddresed user-space probes on prelinked shared libraries on i686 (REL)
Product:	[Fedora] Fedora	Reporter:	Roland McGrath <roland>
Component:	elfutils	Assignee:	Roland McGrath <roland>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	low
Version:	13	CC:	fche, jistone, mjw, mjw, pmachata
Target Milestone:	---
Target Release:	---
Hardware:	i686
OS:	Unspecified
Whiteboard:
Fixed In Version:	elfutils-0.150-1.fc14	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:	646871	Environment:	elfutils-0.149-1.fc13.x86_64
Last Closed:	2010-11-27 23:38:15 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:	646871, 652858

Description Roland McGrath 2010-11-13 00:51:51 UTC

Due to a suspected problem in the way systemtap/elfutils
compute PC addresses to place int3 probe breakpoints into
prelinked shared libraries, sometimes the wrong instruction
is modified.  This can lead to lost probes, or segmentation
violations, or more subtle errors.  This problem appears to
exist in all versions of systemtap.

"prelink -u /usr/lib/libFOO.so" corrects the miscalculations,
as a temporary workaround.

This issue is being tracked upstream at
http://sourceware.org/bugzilla/show_bug.cgi?id=12141

Comment 1 Roland McGrath 2010-11-13 00:53:34 UTC

Bug is in libdwfl handling of prelink REL->RELA changes vs separate debug file.

Comment 2 Roland McGrath 2010-11-13 00:54:09 UTC

commit 1743d7f should fix this, needs more thorough/regression testing still.

Comment 3 Fedora Update System 2010-11-23 22:00:50 UTC

elfutils-0.150-1.fc14 has been submitted as an update for Fedora 14.
https://admin.fedoraproject.org/updates/elfutils-0.150-1.fc14

Comment 4 Fedora Update System 2010-11-23 22:01:04 UTC

elfutils-0.150-1.fc13 has been submitted as an update for Fedora 13.
https://admin.fedoraproject.org/updates/elfutils-0.150-1.fc13

Comment 5 Fedora Update System 2010-11-24 22:39:00 UTC

elfutils-0.150-1.fc14 has been pushed to the Fedora 14 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update elfutils'.  You can provide feedback for this update here: https://admin.fedoraproject.org/updates/elfutils-0.150-1.fc14

Comment 6 Fedora Update System 2010-11-27 23:38:06 UTC

elfutils-0.150-1.fc14 has been pushed to the Fedora 14 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 7 Fedora Update System 2011-01-13 01:17:43 UTC

elfutils-0.151-1.fc14 has been submitted as an update for Fedora 14.
https://admin.fedoraproject.org/updates/elfutils-0.151-1.fc14

Comment 8 Fedora Update System 2011-01-13 01:17:55 UTC

elfutils-0.151-1.fc13 has been submitted as an update for Fedora 13.
https://admin.fedoraproject.org/updates/elfutils-0.151-1.fc13

Comment 9 Fedora Update System 2011-01-21 23:06:33 UTC

elfutils-0.151-1.fc14 has been pushed to the Fedora 14 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 10 Fedora Update System 2011-04-12 21:26:48 UTC

elfutils-0.152-1.fc13 has been pushed to the Fedora 13 stable repository.  If problems still persist, please make note of it in this bug report.