From: Roger He <Hongbo.He@amd.com>
Date: Fri, 17 Nov 2017 04:45:18 +0000 (+0800)
Subject: drm/amd/amdgpu: fix over-bound accessing in amdgpu_cs_wait_any_fence
X-Git-Tag: v4.15-rc1~19^2~5^2~5
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=eb174c77e258f93b0f1046afd23a0aede68be3f2;p=linux.git

drm/amd/amdgpu: fix over-bound accessing in amdgpu_cs_wait_any_fence

Fixes an oops in amdgpu_cs_wait_any_fence.

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 146e05f21d35..bdef497a6a26 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -1498,7 +1498,7 @@ static int amdgpu_cs_wait_any_fence(struct amdgpu_device *adev,
 	wait->out.status = (r > 0);
 	wait->out.first_signaled = first;
 
-	if (array[first])
+	if (first < fence_count && array[first])
 		r = array[first]->error;
 	else
 		r = 0;