Bug 646870 - misaddresed user-space probes on prelinked shared libraries on i686 (REL)
Summary: misaddresed user-space probes on prelinked shared libraries on i686 (REL)
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: systemtap
Version: 5.6
Hardware: i686
OS: Unspecified
low
high
Target Milestone: rc
: ---
Assignee: Frank Ch. Eigler
QA Contact: qe-baseos-tools-bugs
URL:
Whiteboard:
Depends On:
Blocks: 646871
TreeView+ depends on / blocked
 
Reported: 2010-10-26 14:23 UTC by Frank Ch. Eigler
Modified: 2011-07-21 11:11 UTC (History)
3 users (show)

Fixed In Version: systemtap-1.3-5.el5
Doc Type: Bug Fix
Doc Text:
Clone Of:
: 646871 (view as bug list)
Environment:
Last Closed: 2011-07-21 11:11:08 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2011:1044 0 normal SHIPPED_LIVE systemtap bug fix update 2011-07-20 15:43:43 UTC

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


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