Bug 748798 – Xorg crashes when switching to console by Ctrl+Alt+Fn on RHEL 6 guests

Bug 748798 - Xorg crashes when switching to console by Ctrl+Alt+Fn on RHEL 6 guests

Summary:	Xorg crashes when switching to console by Ctrl+Alt+Fn on RHEL 6 guests

Status:	CLOSED CURRENTRELEASE

Aliases:	None

Product:	Red Hat Enterprise Linux 6
Classification:	Red Hat
Component:	xorg-x11-drv-qxl (Show other bugs)
Sub Component:
Version:	6.3
Hardware:	Unspecified Linux

Priority	high Severity high
Target Milestone:	rc
Target Release:	---
Assigned To:	Søren Sandmann Pedersen
QA Contact:	Desktop QE
Docs Contact:

URL:
Whiteboard:
Keywords:	Regression

Duplicates:	835881 (view as bug list)
Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2011-10-25 08:11 EDT by Marian Krcmarik
Modified:	2014-06-18 05:14 EDT (History)
CC List:	7 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2013-03-26 20:06:03 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Xorg.log (63.89 KB, text/plain) 2011-10-25 08:11 EDT, Marian Krcmarik	no flags	Details
X.log (68.18 KB, text/plain) 2012-09-10 11:01 EDT, Marko Myllynen	no flags	Details
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description Marian Krcmarik 2011-10-25 08:11:56 EDT

Created attachment 530071 [details]
Xorg.log

Description of problem:
Xorg server crashes when switching to console by Ctrl+Alt+Fn shortcut on i386 guest. It does occur always when doing the switching first time after boot, after crash It does not occur on all guests always. Xorg.log in attachment. We had this problem some time ago and It was fixed that's why I consider it to be regression.

Version-Release number of selected component (if applicable):
xorg-x11-drv-qxl-0.0.14-10.el6.i686
Linux Guest - Linux localhost.localdomain 2.6.32-211.el6.i686 #1 SMP Tue Oct 18 15:55:38 EDT 2011 i686 i686 i386 GNU/Linux
spice-vdagent-0.8.1-2.el6.i686

How reproducible:
Always

Steps to Reproduce:
1. Connect with spice client to a Linux guest after booting the guest
2. Press Ctrl+Alt+Fn to switch into console.
  
Actual results:
Segfault

Expected results:
No segfault

Additional info:
On x86_64 I am not able to reproduce so far.

Comment 2 Christophe Fergeau 2012-02-28 05:30:53 EST

Here are some more details about how to reproduce (I have only asked some clarifications on IRC, I haven't tried to reproduce this)

1. start a linux guest
2. connect to it with spicec on a linux client
3. switch to a VT in the guest by pressing Ctrl+Alt+Fn (press Alt for a few seconds so that it sticks, and then press Ctrl+Fn)

Result: x.org on the guest segfaults
Expected result: no segfaults

Comment 4 Marko Myllynen 2012-09-10 11:00:11 EDT

I'm seeing the same problem on RHEL 6.3 + latest errata on x86_64. After booting up the guest and switching to a console X starts crashing constantly.

I'll attach Xorg.log with the xorg nevr's appended.

Thanks.

Comment 5 Marko Myllynen 2012-09-10 11:01:58 EDT

Created attachment 611471 [details]
X.log

Comment 6 Marko Myllynen 2012-09-10 11:02:35 EDT

*** Bug 835881 has been marked as a duplicate of this bug. ***

Comment 7 Adam Jackson 2012-09-10 11:26:42 EDT

This patch looks like it might be relevant:

http://cgit.freedesktop.org/xorg/driver/xf86-video-qxl/commit/src/qxl_surface.c?id=f838df1589c63fba8e99200238cf0b4e3acac6b1

Comment 8 Marko Myllynen 2012-09-11 04:58:52 EDT

(In reply to comment #7)
> This patch looks like it might be relevant:
> 
> http://cgit.freedesktop.org/xorg/driver/xf86-video-qxl/commit/src/
> qxl_surface.c?id=f838df1589c63fba8e99200238cf0b4e3acac6b1

Thanks a lot for the pointer, I've rebuilt xorg-x11-drv-qxl-0.0.14-13.el6_2 with the patch and it fixed this issue.

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