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
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: xorg-x11-drv-qxl
Version: 6.3
Hardware: Unspecified
OS: Linux
high
high
Target Milestone: rc
: ---
Assignee: Søren Sandmann Pedersen
QA Contact: Desktop QE
URL:
Whiteboard:
: 835881 (view as bug list)
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-10-25 12:11 UTC by Marian Krcmarik
Modified: 2018-12-01 18:05 UTC (History)
7 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2013-03-27 00:06:03 UTC
Target Upstream Version:

Attachments (Terms of Use)
Xorg.log (63.89 KB, text/plain)
2011-10-25 12:11 UTC, Marian Krcmarik 		no flags Details
X.log (68.18 KB, text/plain)
2012-09-10 15:01 UTC, Marko Myllynen 		no flags Details
View All Add an attachment (proposed patch, testcase, etc.)

Description Marian Krcmarik 2011-10-25 12:11:56 UTC 
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 10:30:53 UTC 
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 15:00:11 UTC 
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 15:01:58 UTC 
Created attachment 611471 [details]
X.log
Comment 6 Marko Myllynen 2012-09-10 15:02:35 UTC 
*** Bug 835881 has been marked as a duplicate of this bug. ***
Comment 7 Adam Jackson 2012-09-10 15:26:42 UTC 
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 08:58:52 UTC 
(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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