[Bug 59089] New: [bisected, regression] flood of GPU fault detected in logs caused by 9af20... drm/radeon: fix fence locking in the pageflip callback

[Bug 59089] New: [bisected, regression] flood of GPU fault detected in logs caused by 9af20... drm/radeon: fix fence locking in the pageflip callback

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https://bugs.freedesktop.org/show_bug.cgi?id=59089

          Priority: medium
            Bug ID: 59089
          Assignee: dri-devel@lists.freedesktop.org
           Summary: [bisected, regression] flood of GPU fault detected in
                    logs caused by 9af20... drm/radeon: fix fence locking
                    in the pageflip callback
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: alexandre.f.demers@gmail.com
          Hardware: All
            Status: NEW
           Version: git
         Component: Drivers/Gallium/r600
           Product: Mesa

GPU fault detected flood in logs (dmesg, kernel, errors and everything) of the
following form:
[  533.928472] radeon 0000:03:00.0: GPU fault detected: 146 0x00335514
[  533.928477] radeon 0000:03:00.0:   VM_CONTEXT1_PROTECTION_FAULT_ADDR  
0x00000000
[  533.928483] radeon 0000:03:00.0:   VM_CONTEXT1_PROTECTION_FAULT_STATUS
0x00000000

>From time to time, there will be an address value different from 0x00000000.
They are produced at an awful rate, producing GB of logs in no time.

Appeared in kernel 3.8.0-rcX using a cayman GPU (HD 6950).

Bisecting to identify when the flood first appeared points at:
Commit: 4ac0533abaec2b83a7f2c675010eedd55664bc26

Author: Jerome Glisse <jglisse@redhat.com>  2012-12-13 12:08:11
Committer: Alex Deucher <alexander.deucher@amd.com>  2012-12-14 10:45:24
Parent: 9af20792124850369e764965690b99b20623dfc4 (drm/radeon: fix fence locking
in the pageflip callback)
Branch: remotes/origin/master
Follows: v3.7-rc7
Precedes: v3.8-rc1

    drm/radeon: fix htile buffer size computation for command stream checker

    Fix the size computation of the htile buffer.

    Signed-off-by: Jerome Glisse <jglisse@redhat.com>
    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Maybe be related to some of the crashes seen in bug 58667.

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[Bug 59089] [bisected, regression] flood of GPU fault detected in logs caused by 9af20... drm/radeon: fix fence locking in the pageflip callback

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https://bugs.freedesktop.org/show_bug.cgi?id=59089

Alexandre Demers <alexandre.f.demers@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugs.freedesktop.or
                   |                            |g/show_bug.cgi?id=58667

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[Bug 59089] [bisected, regression] flood of GPU fault detected in logs caused by 9af20... drm/radeon: fix fence locking in the pageflip callback

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https://bugs.freedesktop.org/show_bug.cgi?id=59089

--- Comment #1 from Alex Deucher <agd5f@yahoo.com> ---
Should be fixed with this mesa commit:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=4332f6fc185f968e7563e748b8c949021937c935

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[Bug 59089] [bisected, regression] flood of GPU fault detected in logs caused by 9af20... drm/radeon: fix fence locking in the pageflip callback

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--- Comment #2 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
Seems good now.

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[Bug 59089] [bisected, regression] flood of GPU fault detected in logs caused by 9af20... drm/radeon: fix fence locking in the pageflip callback

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https://bugs.freedesktop.org/show_bug.cgi?id=59089

Alexandre Demers <alexandre.f.demers@gmail.com> changed:

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

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[Bug 59089] [bisected, regression] flood of GPU fault detected in logs caused by 9af20... drm/radeon: fix fence locking in the pageflip callback

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https://bugs.freedesktop.org/show_bug.cgi?id=59089

Thomas Rohloff <v10lator@myway.de> changed:

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

--- Comment #3 from Thomas Rohloff <v10lator@myway.de> ---
I don't want to play the bad guy but for me this is not fixed, just reduced.

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[Bug 59089] [bisected, regression] flood of GPU fault detected in logs caused by 9af20... drm/radeon: fix fence locking in the pageflip callback

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https://bugs.freedesktop.org/show_bug.cgi?id=59089

--- Comment #4 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #3)
> I don't want to play the bad guy but for me this is not fixed, just reduced.

Well, I closed it because I don't have the continuous GPU fault flood happening
anymore. However, I was unable to determine if there was still a GPU fault
happening. This bug is really about the flood.

So, I don't have any problem in reopening it if you do experience a flood of
GPU faults. I was getting GB of logs in no time.

Are you still seeing GPU faults only in some circumstances (games or specific
applications) or just opening a session (for me it's with Gnome Shell) is
enough? Also, keep in mind this bug is pinpointing a specific commit.

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[Bug 59089] [bisected, regression] flood of GPU fault detected in logs caused by 9af20... drm/radeon: fix fence locking in the pageflip callback

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https://bugs.freedesktop.org/show_bug.cgi?id=59089

--- Comment #5 from Anthony Waters <awaters1@gmail.com> ---
I get the GPU faults starting with mesa commit

3e163a137be7f9a80ec720903c4bda028de5681f is the first bad commit
commit 3e163a137be7f9a80ec720903c4bda028de5681f
Author: Marek Olšák <maraeo@gmail.com>
Date:   Thu Nov 29 02:55:01 2012 +0100

    gallium/postprocess: share pipe_context and cso_context with the state
tracker

    Using one context instead of two is more efficient and
    we can skip another context flush.

    Reviewed-by: Brian Paul <brianp@vmware.com>

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[Bug 59089] [bisected, regression] flood of GPU fault detected in logs caused by 9af20... drm/radeon: fix fence locking in the pageflip callback

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--- Comment #6 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #5)
> I get the GPU faults starting with mesa commit
> 
> 3e163a137be7f9a80ec720903c4bda028de5681f is the first bad commit
> commit 3e163a137be7f9a80ec720903c4bda028de5681f
> Author: Marek Olšák <maraeo@gmail.com>
> Date:   Thu Nov 29 02:55:01 2012 +0100
> 
>     gallium/postprocess: share pipe_context and cso_context with the state
> tracker
>     
>     Using one context instead of two is more efficient and
>     we can skip another context flush.
>     
>     Reviewed-by: Brian Paul <brianp@vmware.com>

Is it a flood? Other commits may create GPU faults, but it shouldn't flood your
logs. I think it would be better to track different sources of GPU faults in
different bugs.

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[Bug 59089] [bisected, regression] flood of GPU fault detected in logs caused by 9af20... drm/radeon: fix fence locking in the pageflip callback

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https://bugs.freedesktop.org/show_bug.cgi?id=59089

--- Comment #7 from Anthony Waters <awaters1@gmail.com> ---
I would consider it a flood, the message continually appears until glxgears is
exited.  Can you confirm whether 3e163a137be7f9a80ec720903c4bda028de5681f in
mesa stops all of the GPU faults? If it does I will open another bug report
seeing as it may be different.

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[Bug 59089] [bisected, regression] flood of GPU fault detected in logs caused by 9af20... drm/radeon: fix fence locking in the pageflip callback

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--- Comment #8 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #7)
> I would consider it a flood, the message continually appears until glxgears
> is exited.  Can you confirm whether 3e163a137be7f9a80ec720903c4bda028de5681f
> in mesa stops all of the GPU faults? If it does I will open another bug
> report seeing as it may be different.

Neither glxgears nor Heroes of Newerth produce GPU fault flood since applied
fix in mesa. If you are still experiencing a flood when glxgears is running,
I'm pretty sure it is not the same thing under the hood. Which makes me think:
what kernel version are you using? Did you test with latest mesa version since
fix was pushed in git? Which gpu do you have?

I'm running latest kernel from Linus' git, latest mesa git and I'm using an HD
6950.

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[Bug 59089] [bisected, regression] flood of GPU fault detected in logs caused by 9af20... drm/radeon: fix fence locking in the pageflip callback

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--- Comment #9 from Anthony Waters <awaters1@gmail.com> ---
Mesa is at latest git, however, my kernel wasn't at Linus' git, so that may be
the issue, using HD 6950. I will try the newest kernel and if it doesn't work
I'll create a new bug report.

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[Bug 59089] [bisected, regression] flood of GPU fault detected in logs caused by 9af20... drm/radeon: fix fence locking in the pageflip callback

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--- Comment #10 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #9)
> Mesa is at latest git, however, my kernel wasn't at Linus' git, so that may
> be the issue, using HD 6950. I will try the newest kernel and if it doesn't
> work I'll create a new bug report.

Ok, let me know. Meanwhile, I'll test something on my side to see if your bad
commit could be related to another bug I'm experiencing with Tropics.

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--- Comment #11 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #9)
> Mesa is at latest git, however, my kernel wasn't at Linus' git, so that may
> be the issue, using HD 6950. I will try the newest kernel and if it doesn't
> work I'll create a new bug report.

Also, you could see if updating libdrm and/or ddx driver could help, there were
some commits for both of them in the last couple of weeks.

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[Bug 59089] [bisected, regression] flood of GPU fault detected in logs caused by 9af20... drm/radeon: fix fence locking in the pageflip callback

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--- Comment #12 from Anthony Waters <awaters1@gmail.com> ---
I have been able to get rid of the flood, the message appears some times in
dmesg so there is some other bug that exists.

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--- Comment #13 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #12)
> I have been able to get rid of the flood, the message appears some times in
> dmesg so there is some other bug that exists.

I agree with you on that point, Thomas and I are also experiencing gpu faults
in some cases.

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[Bug 59089] [bisected, regression] flood of GPU fault detected in logs caused by 9af20... drm/radeon: fix fence locking in the pageflip callback

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Alexandre Demers <alexandre.f.demers@gmail.com> changed:

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

--- Comment #14 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
Closing since original bug/commit was fixed. The remaining GPU faults must have
a different root.

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