[Bug 43941] 'BUG: scheduling while atomic' after: 'panic occurred, switching back to text console'

[Bug 43941] 'BUG: scheduling while atomic' after: 'panic occurred, switching back to text console'

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=43941

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|xorg-driver-ati@lists.x.org |dri-devel@lists.freedesktop
                   |                            |.org
          QAContact|xorg-team@lists.x.org       |
            Summary|Driver BUG on MCE error     |'BUG: scheduling while
                   |report                      |atomic' after: 'panic
                   |                            |occurred, switching back to
                   |                            |text console'
            Product|xorg                        |DRI
            Version|7.7 (2011)                  |unspecified
          Component|Driver/Radeon               |DRM/Radeon

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[Bug 43941] 'BUG: scheduling while atomic' after: 'panic occurred, switching back to text console'

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=43941

--- Comment #11 from Michel Dänzer <michel@daenzer.net> 2011-12-19 07:09:11 PST ---
Created attachment 54573
  --> https://bugs.freedesktop.org/attachment.cgi?id=54573
Use mdelay instead of msleep

Does this patch fix the hang when switching back to console after the MCE?

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[Bug 43941] 'BUG: scheduling while atomic' after: 'panic occurred, switching back to text console'

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=43941

--- Comment #12 from Drago <drago.ivanov@gmail.com> 2011-12-19 07:39:11 PST ---
Thanks, I will test this, but it may take some time for MCE to happen again.
I will report with the result here.

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[Bug 43941] 'BUG: scheduling while atomic' after: 'panic occurred, switching back to text console'

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=43941

Drago <drago.ivanov@gmail.com> changed:

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

--- Comment #13 from Drago <drago.ivanov@gmail.com> 2011-12-31 03:35:14 PST ---
Yes, this fixes the hang after and MCE, and it shows the error log on the
screen.

Any, clues how to debug this MCE error? It doesn't happen in windows, so I
guess some driver didn't program some piece of hardware right.
Thank you.

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[Bug 43941] 'BUG: scheduling while atomic' after: 'panic occurred, switching back to text console'

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=43941

--- Comment #14 from Michel Dänzer <michel@daenzer.net> 2012-01-03 10:07:36 PST ---
(In reply to comment #13)
> Yes, this fixes the hang after and MCE, and it shows the error log on the
> screen.

Great, thanks for testing. Note that in general a bug report shouldn't be
resolved before the fix is applied or at least submitted, but anyway I've
submitted it now.


> Any, clues how to debug this MCE error?

Unfortunately not.

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[Bug 43941] 'BUG: scheduling while atomic' after: 'panic occurred, switching back to text console'

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=43941

--- Comment #15 from Florian Mickler <florian@mickler.org> 2012-01-21 08:46:56 PST ---
A patch referencing this bug report has been merged in Linux v3.3-rc1:

commit cc1f71942944890c7e05fc55dc4427c94b63d4f1
Author: Dave Airlie <airlied@redhat.com>
Date:   Thu Jan 5 09:55:22 2012 +0000

    drm: introduce drm_can_sleep and use in intel/radeon drivers. (v2)

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