[Bug 71081] kernel: kernel BUG at drivers/gpu/drm/radeon/radeon_sa.c:322!

[Bug 71081] kernel: kernel BUG at drivers/gpu/drm/radeon/radeon_sa.c:322!

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=71081

Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alan@lxorguk.ukuu.org.uk
          Component|Video(Other)                |Video(DRI - non Intel)
           Assignee|drivers_video-other@kernel- |drivers_video-dri@kernel-bu
                   |bugs.osdl.org               |gs.osdl.org

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[Bug 71081] kernel: kernel BUG at drivers/gpu/drm/radeon/radeon_sa.c:322!

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=71081

Alex Deucher <alexdeucher@gmail.com> changed:

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

--- Comment #1 from Alex Deucher <alexdeucher@gmail.com> ---
Please attach your full dmesg output.  Was there a particular app or operation
that triggered this?

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[Bug 71081] kernel: kernel BUG at drivers/gpu/drm/radeon/radeon_sa.c:322!

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=71081

--- Comment #2 from William Shuman <wshuman3@gmail.com> ---
Created attachment 127351
  --> https://bugzilla.kernel.org/attachment.cgi?id=127351&action=edit
journal

Attaching. 

This happened while using firefox and browsing google maps in street view.

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[Bug 71081] kernel: kernel BUG at drivers/gpu/drm/radeon/radeon_sa.c:322!

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=71081

William Shuman <wshuman3@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #127351|application/octet-stream    |text/plain
          mime type|                            |

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[Bug 71081] kernel: kernel BUG at drivers/gpu/drm/radeon/radeon_sa.c:322!

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=71081

Christian König <deathsimple@vodafone.de> changed:

           What    |Removed                     |Added
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                 CC|                            |deathsimple@vodafone.de

--- Comment #3 from Christian König <deathsimple@vodafone.de> ---
That's a known problem with the current VM implementation. The application just
tries to use a buffer larger than what we can handle in the VM code, but still
small enough to not trigger the error path.

Please try the drm-next-3.15-wip branch from
git://people.freedesktop.org/~deathsimple/linux and see if you can still
reproduce the problem.

Thanks in advance,
Christian.

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[Bug 71081] kernel: kernel BUG at drivers/gpu/drm/radeon/radeon_sa.c:322!

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=71081

--- Comment #4 from William Shuman <wshuman3@gmail.com> ---
Created attachment 127451
  --> https://bugzilla.kernel.org/attachment.cgi?id=127451&action=edit
journal_wip

Attaching journal from drm-next-3.15-wip

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[Bug 71081] kernel: kernel BUG at drivers/gpu/drm/radeon/radeon_sa.c:322!

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=71081

--- Comment #5 from Christian König <deathsimple@vodafone.de> ---
(In reply to William Shuman from comment #4)
> Created attachment 127451 [details]
> journal_wip
> 
> Attaching journal from drm-next-3.15-wip

Thanks, that was helpful.

The initial bug is gone, but we now see new bugs with VM handling. Probably
need to work a bit more on that patchset.

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