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drm/amdgpu: fix memory overflow in the IB test

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[ Upstream commit 6b0b7789a7a5f3e69185449f891beea58e563f9b ]

Fix a memory overflow issue in the gfx IB test
for some ASICs. At least 20 bytes are needed for
the IB test packet.

v2: correct code indentation errors. (Christian)

Signed-off-by: Tim Huang <Tim.Huang@amd.com>
Reviewed-by: Yifan Zhang <yifan1.zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Tim Huang 2023-11-21 11:06:51 +08:00 • committed by Greg Kroah-Hartman
parent 1705927a10
commit 613eaee445
3 changed files with 5 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

2
drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
View file

@ -397,7 +397,7 @@ static int gfx_v11_0_ring_test_ib(struct amdgpu_ring *ring, long timeout)
adev->wb.wb[index] = cpu_to_le32(0xCAFEDEAD);
cpu_ptr = &adev->wb.wb[index];
r = amdgpu_ib_get(adev, NULL, 16, AMDGPU_IB_POOL_DIRECT, &ib);
r = amdgpu_ib_get(adev, NULL, 20, AMDGPU_IB_POOL_DIRECT, &ib);
if (r) {
DRM_ERROR("amdgpu: failed to get ib (%ld).\n", r);
goto err1;

4
drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
View file

@ -883,8 +883,8 @@ static int gfx_v8_0_ring_test_ib(struct amdgpu_ring *ring, long timeout)
gpu_addr = adev->wb.gpu_addr + (index * 4);
adev->wb.wb[index] = cpu_to_le32(0xCAFEDEAD);
memset(&ib, 0, sizeof(ib));
r = amdgpu_ib_get(adev, NULL, 16,
AMDGPU_IB_POOL_DIRECT, &ib);
r = amdgpu_ib_get(adev, NULL, 20, AMDGPU_IB_POOL_DIRECT, &ib);
if (r)
goto err1;

4
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
View file

@ -1034,8 +1034,8 @@ static int gfx_v9_0_ring_test_ib(struct amdgpu_ring *ring, long timeout)
gpu_addr = adev->wb.gpu_addr + (index * 4);
adev->wb.wb[index] = cpu_to_le32(0xCAFEDEAD);
memset(&ib, 0, sizeof(ib));
r = amdgpu_ib_get(adev, NULL, 16,
AMDGPU_IB_POOL_DIRECT, &ib);
r = amdgpu_ib_get(adev, NULL, 20, AMDGPU_IB_POOL_DIRECT, &ib);
if (r)
goto err1;