Bug 21131

Summary:	Mesa 7.4 causes mythtv to segfault when using VESA
Product:	Mesa	Reporter:	Mario Limonciello <mario_limonciello>
Component:	Mesa core	Assignee:	mesa-dev
Status:	RESOLVED DUPLICATE	QA Contact:
Severity:	normal
Priority:	medium
Version:	unspecified
Hardware:	x86 (IA32)
OS:	Linux (All)
URL:	https://bugs.edge.launchpad.net/ubuntu/+source/mesa/+bug/355242
Whiteboard:
i915 platform:		i915 features:
Attachments:	initialize variables

Description Mario Limonciello 2009-04-11 16:02:01 UTC

Hi:

Ubuntu 9.04 recently updated to Mesa 7.4 from Mesa 7.3.  The upgrade has caused mythfrontend and mythtv-setup (both QT3 based applications) to segfault in one of the QT3 resize functions.

Reverting to Mesa 7.3, everything works fine.  I attempted to bisect the git tree to find the commit that introduced problems.  The first bad commit it found was fe5328bfad063f2ccbcafa2cebe6971d7e8e1db7.  Unfortunately, simply reverting this commit does not solve the problems.

Comment 1 Mario Limonciello 2009-04-11 16:31:06 UTC

I should have actually looked at that commit, it's a fix to a comment :)

Comment 2 Brian Paul 2009-04-14 08:27:47 UTC

I don't know how a segfault in a QT function would be related to Mesa.  Can you provide a stack trace or any additional info?

Comment 3 Mario Limonciello 2009-04-14 08:29:10 UTC

Yeah, there is a stack trace on the Ubuntu bug:

http://launchpadlibrarian.net/24813889/Stacktrace.txt

It's related to mesa since all other variables constant - downgrading to Mesa 7.3 makes it go away.

Comment 4 Mario Limonciello 2009-04-14 09:54:23 UTC

Some additional comments;
This segfault is happening on situations that would be using the software rasterizer such as :
 *-vesa
 *-nv
 *-radeon w/o DRI

Comment 5 Mario Limonciello 2009-04-14 23:12:22 UTC

Created attachment 24807 [details] [review]
initialize variables

Comment 6 Mario Limonciello 2009-04-14 23:24:13 UTC


*** This bug has been marked as a duplicate of bug 21053 ***

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