Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

For bugs related to Red Hat Enterprise Linux 5 product line. The current stable release is 5.10. For Red Hat Enterprise Linux 6 and above, please visit Red Hat JIRA https://issues.redhat.com/secure/CreateIssue!default.jspa?pid=12332745 to report new issues.

Bug 646870

Summary:	misaddresed user-space probes on prelinked shared libraries on i686 (REL)
Product:	Red Hat Enterprise Linux 5	Reporter:	Frank Ch. Eigler <fche>
Component:	systemtap	Assignee:	Frank Ch. Eigler <fche>
Status:	CLOSED ERRATA	QA Contact:	qe-baseos-tools-bugs
Severity:	high	Docs Contact:
Priority:	low
Version:	5.6	CC:	jeast, mjw, pmuller
Target Milestone:	rc
Target Release:	---
Hardware:	i686
OS:	Unspecified
Whiteboard:
Fixed In Version:	systemtap-1.3-5.el5	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:
Clones:	646871 (view as bug list)		Environment:
Last Closed:	2011-07-21 11:11:08 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

Description Frank Ch. Eigler 2010-10-26 14:23:42 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 Frank Ch. Eigler 2010-11-29 16:37:01 UTC

A future refresh of systemtap can update its bundled elfutils to version 0.150 to fix this problem.

Comment 4 Frank Ch. Eigler 2011-05-13 13:06:50 UTC

Please copy notes from bug #652858, which fixed the corresponding issues in RHEL6.

Comment 6 errata-xmlrpc 2011-07-21 11:11:08 UTC

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2011-1044.html