Ensure there is no address overlapping. Reported-by: Vlad Stolyarov <hexed@xxxxxxxxxx> Signed-off-by: xinhui pan <xinhui.pan@xxxxxxx> --- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 8af3f0fd3073..f1315a854192 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -1852,6 +1852,12 @@ int amdgpu_vm_bo_clear_mappings(struct amdgpu_device *adev, LIST_HEAD(removed); uint64_t eaddr; + /* validate the parameters */ + if (saddr & ~PAGE_MASK || size & ~PAGE_MASK) + return -EINVAL; + if (saddr + size <= saddr) + return -EINVAL; + eaddr = saddr + size - 1; saddr /= AMDGPU_GPU_PAGE_SIZE; eaddr /= AMDGPU_GPU_PAGE_SIZE; -- 2.34.1
