drm/amdgpu: Fix for drm buddy memory corruption

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User reported gpu page fault when running graphics applications
and in some cases garbaged graphics are observed as soon as X
starts. This patch fixes all the issues.

Fixed the typecast issue for fpfn and lpfn variables, thus
preventing the overflow problem which resolves the memory
corruption.

Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Reported-by: Mike Lothian <mike@fireburn.co.uk>
Tested-by: Mike Lothian <mike@fireburn.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20220714101214.7620-1-Arunpravin.PaneerSelvam@amd.com
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>

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This commit is contained in:

Arunpravin Paneer Selvam 2022-07-14 03:12:14 -07:00 • committed by Christian König

parent c96cfaf8fc

commit 6f2c8d5f16

2 changed files with 9 additions and 9 deletions

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16

drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c

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2

drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.h

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