iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/amdgpu: check alignment on CPU page for bo map

Browse Source 
The page table of AMDGPU requires an alignment to CPU page so we should
check ioctl parameters for it.  Return -EINVAL if some parameter is
unaligned to CPU page, instead of corrupt the page table sliently.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Xi Ruoyao <xry111@mengyan1223.wang>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Xℹ Ruoyao 2021-03-30 23:33:34 +08:00 committed by Alex Deucher
parent f4d3da72a7
commit 9a89a721b4
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
View File

@ -2198,8 +2198,8 @@ int amdgpu_vm_bo_map(struct amdgpu_device *adev,
uint64_t eaddr;
/* validate the parameters */
if (saddr & AMDGPU_GPU_PAGE_MASK || offset & AMDGPU_GPU_PAGE_MASK ||
size == 0 || size & AMDGPU_GPU_PAGE_MASK)
if (saddr & ~PAGE_MASK || offset & ~PAGE_MASK ||
size == 0 || size & ~PAGE_MASK)
return -EINVAL;
/* make sure object fit at this offset */
@ -2264,8 +2264,8 @@ int amdgpu_vm_bo_replace_map(struct amdgpu_device *adev,
int r;
/* validate the parameters */
if (saddr & AMDGPU_GPU_PAGE_MASK || offset & AMDGPU_GPU_PAGE_MASK ||
size == 0 || size & AMDGPU_GPU_PAGE_MASK)
if (saddr & ~PAGE_MASK || offset & ~PAGE_MASK ||
size == 0 || size & ~PAGE_MASK)
return -EINVAL;
/* make sure object fit at this offset */