Bug 76607

Summary: Misleading output in Oops: Using_Versions []
Product: [Retired] Red Hat Linux Reporter: Philip Pokorny <ppokorny>
Component: kernelAssignee: Arjan van de Ven <arjanv>
Status: CLOSED CURRENTRELEASE QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 7.3   
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2004-09-30 15:40:07 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:

Description Philip Pokorny 2002-10-24 02:22:43 UTC 
Description of Problem:
If a corruption occurs that results in the kernel executing data (outside normal
kernel code), the show_regs() function displays:

EIP is at Using_Versions [] 0x40401234

Where 0x40401234 is one less than the unhandled kernel page fault address.

How Reproducible:
Completely

Steps to Reproduce:
1. Corrupt the process table (This is the hard part...)
2. Collect the Oops.
3. 

Actual Results:
EIP is at Using_Versions [] 0x40401234


Expected Results:
EIP is at [unresolved]


Additional Information:

One idea would be to change the value of Using_Versions in kernel/ksyms.c to
something like '0xf0000001' so that it sorts numerically after kernel code. 
However that's very 32-bit and probably not cross-platform portable.

Perhaps the lookup_symbol in kernel/kksymoops.c or the functions in
kernel/kallsyms.c should be made to avoid the __ksymtab section?
Comment 1 Bugzilla owner 2004-09-30 15:40:07 UTC 
Thanks for the bug report. However, Red Hat no longer maintains this version of
the product. Please upgrade to the latest version and open a new bug if the problem
persists.

The Fedora Legacy project (http://fedoralegacy.org/) maintains some older releases, 
and if you believe this bug is interesting to them, please report the problem in
the bug tracker at: http://bugzilla.fedora.us/