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From 0be52de91c5e275dff61f0ed2314d84c9d68b385 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Mon, 18 May 2015 14:37:27 +0200
Subject: [PATCH 0215/1050] drm/amdgpu: validate amdgpu_vm_bo_map parameters
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 1cc01fb..b25e533 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -936,6 +936,13 @@ int amdgpu_vm_bo_map(struct amdgpu_device *adev,
uint64_t eaddr;
int r;
+ /* validate the parameters */
+ if (saddr & AMDGPU_GPU_PAGE_MASK || offset & AMDGPU_GPU_PAGE_MASK ||
+ size == 0 || size & AMDGPU_GPU_PAGE_MASK) {
+ amdgpu_bo_unreserve(bo_va->bo);
+ return -EINVAL;
+ }
+
/* make sure object fit at this offset */
eaddr = saddr + size;
if ((saddr >= eaddr) || (offset + size > amdgpu_bo_size(bo_va->bo))) {
--
1.9.1
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