[Bug 89734] GL_AMD_pinned_memory extension causing a kernel hardlock

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Comment # 8 on bug 89734 from
(In reply to poub365-bugzilla from comment #7)
> Installed the new kernel (3.19) and rebooted on it. Same freeze on the exit
> of Dolphin. Here's the new dmesg log. Hope I did it right.

Yeah, thanks! That's exactly what I needed.

And my initial suspicion was right, for some reason we try to free the SG table
twice:

[  141.833287] [drm:radeon_ttm_backend_unbind [radeon]] *ERROR* ttm->sg =
ffff880222930e00, ttm->sg->sgl = ffff8802238bd200
...
[  141.898159] [drm:radeon_ttm_backend_unbind [radeon]] *ERROR* ttm->sg =
ffff880222930e00, ttm->sg->sgl =           (null)

Which then obviously causes problems.

For a quick fix we could try to double check if we haven't already freed the
table, but I think the underlying problem is that we try to free the BO twice
as well.

@Michel any ideas?


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