[PATCH 5.10 1/1] drm/amdgpu: Ensure the AMDGPU file descriptor is legitimate

[Lee Jones]

On Thu, 14 Apr 2022, Greg KH wrote:

> On Tue, Apr 12, 2022 at 04:20:57PM +0100, Lee Jones wrote:
> > [ Upstream commit b40a6ab2cf9213923bf8e821ce7fa7f6a0a26990 ]
> > 
> > This is a partial cherry-pick of the above upstream commit.
> > 
> > It ensures the file descriptor passed in by userspace is a valid one.
> > 
> > Cc: Felix Kuehling <Felix.Kuehling at amd.com>
> > Cc: Alex Deucher <alexander.deucher at amd.com>
> > Cc: "Christian König" <christian.koenig at amd.com>
> > Cc: David Airlie <airlied at linux.ie>
> > Cc: Daniel Vetter <daniel at ffwll.ch>
> > Cc: amd-gfx at lists.freedesktop.org
> > Cc: dri-devel at lists.freedesktop.org
> > Signed-off-by: Lee Jones <lee.jones at linaro.org>
> > ---
> >  drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 10 +++++++---
> >  1 file changed, 7 insertions(+), 3 deletions(-)
> 
> Now queued up, thanks.

Could you also back-port this into v5.4 please?

FYI, in the v5.10.y tree, it's now called:

  f0c31f192f38c drm/amdkfd: Use drm_priv to pass VM from KFD to amdgpu

-- 
Lee Jones [李琼斯]
Principal Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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