[PATCH] drm/amdgpu/gfx10: fix out-of-bound mqd_backup array access

[Zhang, Hawking]

Reviewed-by: Hawking Zhang <Hawking.Zhang at amd.com>

Regards,
Hawking
-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Xiaojie Yuan
Sent: 2019年11月20日 14:48
To: amd-gfx at lists.freedesktop.org
Cc: Yuan, Xiaojie <Xiaojie.Yuan at amd.com>
Subject: [PATCH] drm/amdgpu/gfx10: fix out-of-bound mqd_backup array access

Fixes: 4990f957c845 ("drm/amdgpu/gfx10: fix mqd backup/restore for gfx rings")
Signed-off-by: Xiaojie Yuan <xiaojie.yuan at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
index a492174ef29b..52c27e49bc7b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
@@ -454,8 +454,6 @@ void amdgpu_gfx_mqd_sw_fini(struct amdgpu_device *adev)
 	}
 
 	ring = &adev->gfx.kiq.ring;
-	if (adev->asic_type >= CHIP_NAVI10 && amdgpu_async_gfx_ring)
-		kfree(adev->gfx.me.mqd_backup[AMDGPU_MAX_GFX_RINGS]);
 	kfree(adev->gfx.mec.mqd_backup[AMDGPU_MAX_COMPUTE_RINGS]);
 	amdgpu_bo_free_kernel(&ring->mqd_obj,
 			      &ring->mqd_gpu_addr,
-- 
2.20.1

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