Bug#855105: xserver-xorg-core: numerous deleted DRM mmaped objects in Xorg server memory mappings

[Michel Dänzer <michel@daenzer.net>]

On 14/02/17 05:40 PM, Laurent Bonnaud wrote:
> Package: xserver-xorg-core
> Version: 2:1.19.1-4
> Severity: normal
> 
> 
> Dear Maintainer,
> 
> here is the problem:
> 
> # grep /drm /proc/$(pidof Xorg)/maps
> 7f4afc942000-7f4afc94a000 rw-s 00000000 00:05 293242                     /drm mm object (deleted)
> 7f4afc9a4000-7f4afc9ac000 rw-s 00000000 00:05 292174                     /drm mm object (deleted)
> 7f4b009d8000-7f4b009e0000 rw-s 00000000 00:05 292169                     /drm mm object (deleted)
> 7f4b00b4c000-7f4b00b50000 rw-s 00000000 00:05 292165                     /drm mm object (deleted)
> 7f4b00b52000-7f4b00b53000 rw-s 00000000 00:05 292159                     /drm mm object (deleted)
> 
> This is just after the Xorg server has been started by lightdm.
> Those deleted mappings should probably not be there and waste memory.

I'm not seeing any such mappings with an AMD GPU. I suspect they might
be from the Mesa i965 driver.


P.S. Please file bugs either upstream or downstream, not both at the
same time.

-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer