[Bug 30188] New: X server crashes with a SIGBUS on Evergreen

[Bug 30188] New: X server crashes with a SIGBUS on Evergreen

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https://bugs.freedesktop.org/show_bug.cgi?id=30188

           Summary: X server crashes with a SIGBUS on Evergreen
           Product: DRI
           Version: XOrg CVS
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: tomasz.figa@gmail.com


I have recently switched my desktop PC with Radeon HD 5770 from fglrx to
xf86-video-ati and discovered a problem causing the X server to crash with a
SIGBUS signal.

I can reproduce this bug by opening a PDF document in Okular and scrolling
through several pages back and forth, then mouse cursor hangs and X server
crashes. It happens regardless of kernel version.

Disabling RenderAccel helps, but it's not a solution since it turns off the
acceleration.

It's not a duplicate of https://bugs.freedesktop.org/show_bug.cgi?id=29738 ,
because it still happens with pre-709ea97145c125b3811ff70429e90ebdb0e832e5
kernels.

My setup:

Linux 2.6.35.4, git drm-fixes or git drm-radeon-testing
xorg-server git 09/13
xf86-video-ati git 09/13
libdrm git 09/13

Intel Core 2 Quad Q6600 Processor
AMD Radeon HD 5770

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[Bug 30188] X server crashes with a SIGBUS on Evergreen

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https://bugs.freedesktop.org/show_bug.cgi?id=30188

--- Comment #1 from Tomasz Figa <tomasz.figa@gmail.com> 2010-09-14 10:13:03 PDT ---
Created an attachment (id=38699)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=38699)
X server log

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[Bug 30188] X server crashes with a SIGBUS on Evergreen

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https://bugs.freedesktop.org/show_bug.cgi?id=30188

--- Comment #2 from Tomasz Figa <tomasz.figa@gmail.com> 2010-09-14 10:13:57 PDT ---
Created an attachment (id=38700)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=38700)
dmesg log

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[Bug 30188] X server crashes with a SIGBUS on Evergreen

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https://bugs.freedesktop.org/show_bug.cgi?id=30188

--- Comment #3 from Tomasz Figa <tomasz.figa@gmail.com> 2010-09-14 10:44:52 PDT ---
(From update of attachment 38700)
drm-2.6 commit 7a6b2896f261894dde287d3faefa4b432cddca53

2.6.35.4, latest drm-fixes and drm-radeon-testing don't give any interesting
output

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[Bug 30188] X server crashes with a SIGBUS on Evergreen

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--- Comment #4 from Jure Repinc <jlp.bugs@gmail.com> 2010-09-23 08:42:13 PDT ---
I think I have the same bug, I also first noticed it while opening a PDF in
Okular. Later I also got ceashes when switching the virtual desktop. This is
with kernel 2.6.36 RC5 and eMachines E640G laptop with integrated ATI Mobility
Radeon HD 5470.

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[Bug 30188] X server crashes with a SIGBUS on Evergreen

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--- Comment #5 from Alex Deucher <agd5f@yahoo.com> 2010-09-24 10:35:13 PDT ---
I still think this is a related bug 29738.  The backtrace is just about the
same.

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[Bug 30188] X server crashes with a SIGBUS on Evergreen

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--- Comment #6 from Tomasz Figa <tomasz.figa@gmail.com> 2010-09-24 10:58:40 PDT ---
I doubt that this issue shares with bug 29738 anything more than similar
behavior.

Bug 29738 was related to a single commit and as I said, I have tested kernel
revisions from before and after the problematic change and both options didn't
work.

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[Bug 30188] X server crashes with a SIGBUS on Evergreen

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--- Comment #7 from Francesco R <maillist@pnpitalia.it> 2010-09-26 06:25:31 PDT ---
Created an attachment (id=38962)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=38962)
various; bt full, dmesg, sw version

me too, evergreen 1002:68f9.

The attach contain various things I've tried to inspect may be useful or not.

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[Bug 30188] X server crashes with a SIGBUS on Evergreen

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Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |felixblanke@gmail.com

--- Comment #8 from Alex Deucher <agd5f@yahoo.com> 2010-09-30 15:42:04 PDT ---
*** Bug 30517 has been marked as a duplicate of this bug. ***

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[Bug 30188] X server crashes with a SIGBUS on Evergreen

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--- Comment #9 from Felix Blanke <felixblanke@gmail.com> 2010-10-05 08:42:50 PDT ---
Are there any kind of information I (we) can provide to help to solve this bug?

I'm getting this bug a lot and it is really frustrating losing some work etc.
while X is crashing :/

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[Bug 30188] X server crashes with a SIGBUS on Evergreen

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--- Comment #10 from Maggioni Marcello <hayarms@gmail.com> 2010-10-05 17:47:06 PDT ---
same problem here with similar backtrace. (I'll attach the backtrace)

The mouse freezes and X restarts. Okular is the only application that seems to
trigger easily this bug.

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[Bug 30188] X server crashes with a SIGBUS on Evergreen

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--- Comment #11 from Maggioni Marcello <hayarms@gmail.com> 2010-10-05 17:47:36 PDT ---
Created an attachment (id=39200)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=39200)
Xorg backtrace

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[Bug 30188] X server crashes with a SIGBUS on Evergreen

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--- Comment #12 from Maggioni Marcello <hayarms@gmail.com> 2010-10-06 01:34:19 PDT ---
I found another situation where xorg crashes. Bringing virtualbox fullscreen
makes the x server crash immediatly, but this time not with a sigbus, but with
a segfault.

another backtrace attached

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[Bug 30188] X server crashes with a SIGBUS on Evergreen

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--- Comment #13 from Maggioni Marcello <hayarms@gmail.com> 2010-10-06 01:35:18 PDT ---
Created an attachment (id=39213)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=39213)
Xorg backtrace 2

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[Bug 30188] X server crashes with a SIGBUS on Evergreen

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--- Comment #14 from Felix Blanke <felixblanke@gmail.com> 2010-10-06 01:59:20 PDT ---
Virtualbox triggers that bug a lot at my machine.

But I'm getting a sigbus, not a segfault. My backtrace is in the duplicate bug
30517.

Sometimes it happens when simply starting virtualbox, sometimes when switching
to fullscreen,...

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[Bug 30188] X server crashes with a SIGBUS on Evergreen

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--- Comment #15 from Rafael Monica <monraaf@gmail.com> 2010-10-06 03:32:38 PDT ---
Created an attachment (id=39218)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=39218)
xorg backtrace

Also getting a SIGBUS with Evergreen. For me it's triggered by browsing google
image search with Firefox. Backtrace attached.

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[Bug 30188] X server crashes with a SIGBUS on Evergreen

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Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #39213|application/x-trash         |text/plain
          mime type|                            |
  Attachment #39213|0                           |1
           is patch|                            |

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[Bug 30188] X server crashes with a SIGBUS on Evergreen

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Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #39200|text/x-log                  |text/plain
          mime type|                            |
  Attachment #39200|0                           |1
           is patch|                            |

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--- Comment #16 from Alex Deucher <agd5f@yahoo.com> 2010-10-06 17:14:30 PDT ---
This might be an issue with non-cpu accessible vram.  Do you still see the
issue with the drm-next or drm-radeon-testing branches of Dave's drm tree?

Specifically, make sure your kernel has this patch:
http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commitdiff;h=d7ccd8fc11700502b5a104b7bad595b492a3aa1b

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--- Comment #17 from Felix Blanke <felixblanke@gmail.com> 2010-10-07 01:42:53 PDT ---
Maybe it's a noob question but how do I apply that patch on top of 2.6.26-rc6?

Or do I have to use the newest git kernel for that?

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--- Comment #18 from Tomasz Figa <tomasz.figa@gmail.com> 2010-10-07 03:58:48 PDT ---
With current drm-radeon-testing, after some short testing I can say that I
can't trigger the bug by Okular anymore. 

Will see how it performs in normal use.

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--- Comment #19 from Felix Blanke <felixblanke@gmail.com> 2010-10-07 04:11:22 PDT ---
Same for me. Can't trigger the bug with drm-testing @virtualbox.


Will that stuff be in 2.6.37?

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--- Comment #20 from Jure Repinc <jlp.bugs@gmail.com> 2010-10-07 05:25:41 PDT ---
Looks good so far for me too. No crash after several hours of use.

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--- Comment #21 from Alex Deucher <agd5f@yahoo.com> 2010-10-07 07:39:05 PDT ---
The blit stuff will be in 2.6.37 and Jerome has a set of patches we need to try
and get into stable to avoid this on older kernels.

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--- Comment #22 from Rafael Monica <monraaf@gmail.com> 2010-10-07 10:11:48 PDT ---
Just a me too. Latest drm-radeon-testing seems to have fixed my bus errors
also.

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--- Comment #23 from Maggioni Marcello <hayarms@gmail.com> 2010-10-07 14:47:22 PDT ---
Hei, I tried the drm-radeon-testing kernel and now Okular works, but X still
crashes with a segfault when going fullscreen with virtualbox.

Someone is having this problem? Do you think is related to this bug?

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--- Comment #24 from Alex Deucher <agd5f@yahoo.com> 2010-10-07 16:09:43 PDT ---
(In reply to comment #23)
> Hei, I tried the drm-radeon-testing kernel and now Okular works, but X still
> crashes with a segfault when going fullscreen with virtualbox.
> 
> Someone is having this problem? Do you think is related to this bug?

That's a different issue.  Please file a different bug for that.

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--- Comment #25 from Felix Blanke <felixblanke@gmail.com> 2010-10-08 03:12:10 PDT ---
Virtualbox fullscreen with a Win7 guest works for me. This should be really a
different issue.

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--- Comment #26 from Alex Deucher <agd5f@yahoo.com> 2010-10-12 09:19:50 PDT ---
Created an attachment (id=39385)
 View: https://bugs.freedesktop.org/attachment.cgi?id=39385
 Review: https://bugs.freedesktop.org/review?bug=30188&attachment=39385

fix for 2.6.35 and 2.6.36

This patch should fix the issue on stable kernels.

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--- Comment #27 from Alex Deucher <agd5f@yahoo.com> 2010-10-13 13:53:07 PDT ---
This patch, scheduled hopefully for 2.6.36 should also fix the issue:
http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commitdiff;h=c919b371cb734f42b1130e706ecee262f8d9261d

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--- Comment #28 from Alex Deucher <agd5f@yahoo.com> 2010-10-15 08:40:42 PDT ---
(In reply to comment #27)
> This patch, scheduled hopefully for 2.6.36 should also fix the issue:
> http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commitdiff;h=c919b371cb734f42b1130e706ecee262f8d9261d

Linus pulled this into 2.6.36:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=c919b371cb734f42b1130e706ecee262f8d9261d

I'd like to get something into 2.6.35 stable as well.

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Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

--- Comment #29 from Alex Deucher <agd5f@yahoo.com> 2010-11-11 17:08:18 PST ---
fixes pushed.

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