Re: Bad rss-counter state from drm/ttm, drm/vmwgfx: Support huge TTM pagefaults

[Thomas HellstrÃm (VMware)]

On 4/7/20 2:38 AM, Alex Xu (Hello71) wrote:
> Excerpts from Thomas HellstrÃm (VMware)'s message of April 6, 2020 5:04 pm:
> > Hi,
> >
> > On 4/6/20 9:51 PM, Alex Xu (Hello71) wrote:
> > > Using 314b658 with amdgpu, starting sway and firefox causes "BUG: Bad
> > > rss-counter state" and "BUG: non-zero pgtables_bytes on freeing mm" to
> > > start filling dmesg, and then closing programs causes more BUGs and
> > > hangs, and then everything grinds to a halt (can't start more programs,
> > > can't even reboot through systemd).
> > >
> > > Using master and reverting that branch up to that point fixes the
> > > problem.
> > >
> > > I'm using a Ryzen 1600 and AMD Radeon RX 480 on an ASRock B450 Pro4
> > > board with IOMMU enabled.
> > If you could try the attached patch, that'd be great!
> >
> > Thanks,
> >
> > Thomas
> Yeah, that works too. Kernel config sent off-list.
>
> Regards,
> Alex.

Thanks. Do you want me to add your

Reported-by: and Tested-by: To this patch?

/Thomas