omapdrm + etnaviv memory leak

[Lucas Stach]

Hi Tomi,

Am Donnerstag, den 24.05.2018, 11:39 +0300 schrieb Tomi Valkeinen:
> Hi Lucas,
> 
> On 23/05/18 11:53, Lucas Stach wrote:
> 
> > > With each run, I can see buffers being left lying around, visible
> > > in
> > > both omapdrm's and etnaviv's 'gem' debugfs file. And they're
> > > there
> > > even after killing X.
> > > 
> > > If I try to rmmod etnaviv, I get the warnings below. Unloading
> > > omapdrm is not possible, as it's being referenced by something
> > > (presumably by etnaviv having imported omapdrm's dmabufs).
> > > 
> > > I haven't debugged this much yet, but we do use dmabuf import &
> > > export successfully with omapdrm and v4l2. Has etnaviv dmabuf
> > > import/export been tested?
> > 
> > Yes, dma-buf import/export with etnaviv is extensively being used,
> > as
> > we need to work with imx-drm on the scanout side and a V4L2 driven
> > VPU
> > for video-decode.
> 
> I managed to create a simple test case for this, and I can see the
> leak
> happen without omapdrm too, with etna + vgem combination.
> 
> https://github.com/tomba/kmsxx/blob/etna-debug/utils/buftest.cpp
> 
> With etna_bo_map(), buffers leak.

Thanks, this is really helpful! I'll have a look.

Regards,
Lucas