[Bug 37168] Regression: Kernel hard-lock when running Second Life

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=37168

--- Comment #9 from Sean McNamara <gm.potato.ul at gmail.com> 2011-06-10 15:04:01 PDT ---
(In reply to comment #6)
> Created an attachment (id=47812)
 View: https://bugs.freedesktop.org/attachment.cgi?id=47812
 Review: https://bugs.freedesktop.org/review?bug=37168&attachment=47812

> proposed patch
> 
> I'm having the same memory leak issue (though I kill the game when swapping
> starts so I did not experience kernel lock).
> 
> The attached patch seems to fix the problem; could you please test it with your
> setup ?

Also, I believe I fixed my kernel hardlocks by disabling my motherboard
chipset's buggy IOMMU. The IOMMU for Intel VT-D on the ASUS P6T Deluxe
motherboard is so buggy that it makes VT-d completely unusable on this
motherboard. ASUS seems unwilling to patch their broken BIOS, maybe because the
hardware is just broken.

Anyway, I can't reproduce the kernel hardlock with Linux 3.0-rc2 and the IOMMU
disabled in the BIOS (VT-d set to disabled).

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