Bug 74944

Summary: Kudzu ddc detection segfaults on bogus horizontal/veritical sync/refresh data
Product: [Retired] Red Hat Linux Reporter: Dan Burcaw <dburcaw>
Component: kudzuAssignee: Bill Nottingham <notting>
Status: CLOSED RAWHIDE QA Contact: David Lawrence <dkl>
Severity: medium Docs Contact:
Priority: medium    
Version: 8.0CC: mharris, mitr, rvokal
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Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2003-01-17 05:44:46 UTC Type: ---
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Proposed fix for this bug. none

Description Dan Burcaw 2002-10-02 23:04:14 UTC 
From Bugzilla Helper:
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Description of problem:
Kudzu's ddc checking uses values from the monitor's entry in MonitorsDB
if the horizontal and vertical ranges for the monitor are bogus.
Unfortunately, if the MonitorsDB doesn't have an entry for the monitor,
kudzu segfaults.  This is because it tries to access a null pointer.

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1.Run kudzu -b DDC on a monitor with bogus horz/vert ranges such as many LCDs.
Due this without that monitor having an entry in MonitorsDB.
2.
3.
	

Actual Results:  Seg fault.

Expected Results:  No seg fault. :-)

Additional info:

Attached is a patch to fix this problem.  It basically
checks not only that the ranges are bogus, but also that
we have in fact found a monitor entry in the MonitorsDB
to use.
Comment 1 Dan Burcaw 2002-10-02 23:05:04 UTC 
Created attachment 78284 [details]
Proposed fix for this bug.
Comment 2 Miloslav Trmac 2002-10-03 01:21:07 UTC 
duplicate of 70190 and 74424
Comment 3 Bill Nottingham 2003-01-17 05:44:46 UTC 
Added, will be in 0.99.89-1.