Bug 614808

Summary: prelink shifts .bss address by .dynbss breaking gdb
Product: Red Hat Enterprise Linux 6 Reporter: Jan Kratochvil <jan.kratochvil>
Component: gdbAssignee: Jan Kratochvil <jan.kratochvil>
Status: CLOSED CURRENTRELEASE QA Contact: Petr Muller <pmuller>
Severity: medium Docs Contact:
Priority: low    
Version: 6.0CC: ebachalo, ohudlick, pmuller, syeghiay
Target Milestone: rcKeywords: Regression
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: gdb-7.1-29.el6 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: 614806 Environment:
Last Closed: 2010-11-10 20:27:21 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: 614659, 614806    
Bug Blocks:    

Description Jan Kratochvil 2010-07-15 10:07:19 UTC 
+++ This bug was initially created as a clone of Bug #614806 +++

there is a regression since gdb-7.0 for a combination of:
 * prelinked
 * main executable
 * using separate debug info
 * using copy relocations

Hopefully it may not affect customer applications but it makes debugging of the RHEL components difficult:

int bssvar, *bssvarp = &bssvar;

(gdb) p &bssvar
$1 = (int *) 0x600b54
(gdb) p bssvarp
$2 = (int *) 0x600b50

Version-Release number of selected component (if applicable):
FAIL gdb-7.1-28.el6
FAIL gdb-7.1-28.fc13.x86_64
PASS <= FSF GDB 7.0
FAIL >= FSF GDB 7.1

How reproducible:
Always.

Steps to Reproduce:
Updated gdb.base/prelink.exp testcase.

Fix + testcase:
http://sourceware.org/ml/gdb-patches/2010-07/msg00237.html
Comment 3 Petr Muller 2010-08-03 14:39:02 UTC 
# runtest --tool=gdb gdb.base/prelink.exp
(...)
                === gdb Summary ===

# of expected passes            4
Comment 4 releng-rhel@redhat.com 2010-11-10 20:27:21 UTC 
Red Hat Enterprise Linux 6.0 is now available and should resolve
the problem described in this bug report. This report is therefore being closed
with a resolution of CURRENTRELEASE. You may reopen this bug report if the
solution does not work for you.