[Bug 95195] Tonga agd5f drm-next-4.7-wip UVD Oops/lock since drm/amdgpu: keep vm in job instead of ib

[Bug 95195] Tonga agd5f drm-next-4.7-wip UVD Oops/lock since drm/amdgpu: keep vm in job instead of ib

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https://bugs.freedesktop.org/show_bug.cgi?id=95195

            Bug ID: 95195
           Summary: Tonga agd5f drm-next-4.7-wip UVD Oops/lock since
                    drm/amdgpu: keep vm in job instead of ib
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: adf.lists@gmail.com

Created attachment 123327
  --> https://bugs.freedesktop.org/attachment.cgi?id=123327&action=edit
dmesg showing Oops

Tonga on agd5f drm-next-4.7-wip

Getting an Oops followed by a GPU lock using UVD since -

commit 5599239c331b9860c35d5e0fd7c6acbc838fc20d
Author: Monk Liu <Monk.Liu@amd.com>
Date:   Tue Apr 19 20:11:32 2016 +0800

    drm/amdgpu: keep vm in job instead of ib

    ib.vm is a legacy way to get vm, after scheduler
    implemented vm should be get from job, and all ibs
    from one job share the same vm, no need to keep ib.vm
    just move vm field to job.

    this patch as well add job as paramter to ib_schedule
    so it can get vm from job->vm.

Easy to provoke with powerplay=1 and auto clocks. Harder to provoke, but also 
happens with powerplay=0.

dmesg with Oops attached.

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[Bug 95195] Tonga agd5f drm-next-4.7-wip UVD Oops/lock since drm/amdgpu: keep vm in job instead of ib

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https://bugs.freedesktop.org/show_bug.cgi?id=95195

--- Comment #1 from Alex Deucher <alexdeucher@gmail.com> ---
Created attachment 123329
  --> https://bugs.freedesktop.org/attachment.cgi?id=123329&action=edit
possible fix

Does the attached patch help?

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[Bug 95195] Tonga agd5f drm-next-4.7-wip UVD Oops/lock since drm/amdgpu: keep vm in job instead of ib

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https://bugs.freedesktop.org/show_bug.cgi?id=95195

--- Comment #2 from Andy Furniss <adf.lists@gmail.com> ---
(In reply to Alex Deucher from comment #1)
> Created attachment 123329 [details] [review]
> possible fix
> 
> Does the attached patch help?

Yes, so far running OK with that.

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[Bug 95195] Tonga agd5f drm-next-4.7-wip UVD Oops/lock since drm/amdgpu: keep vm in job instead of ib

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https://bugs.freedesktop.org/show_bug.cgi?id=95195

Andy Furniss <adf.lists@gmail.com> changed:

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

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