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SubjectRe: [PATCH] drm/amdgpu: fix i2s_pdata out of bound array access
On Wed, Jul 27, 2022 at 10:42 AM Vijendar Mukunda
<Vijendar.Mukunda@amd.com> wrote:
>
> Fixed following Smatch static checker warning:
>
> drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c:393 acp_hw_init()
> error: buffer overflow 'i2s_pdata' 3 <= 3
> drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c:396 acp_hw_init()
> error: buffer overflow 'i2s_pdata' 3 <= 3
>
> Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
> Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c | 8 --------
> 1 file changed, 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
> index bcc7ee02e0fc..6d72355ac492 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
> @@ -390,14 +390,6 @@ static int acp_hw_init(void *handle)
> i2s_pdata[2].i2s_reg_comp1 = ACP_BT_COMP1_REG_OFFSET;
> i2s_pdata[2].i2s_reg_comp2 = ACP_BT_COMP2_REG_OFFSET;
>
> - i2s_pdata[3].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET;
> - switch (adev->asic_type) {
> - case CHIP_STONEY:
> - i2s_pdata[3].quirks |= DW_I2S_QUIRK_16BIT_IDX_OVERRIDE;
> - break;
> - default:
> - break;
> - }

Is this actually not used or should we just increase the allocation size?

Alex

> adev->acp.acp_res[0].name = "acp2x_dma";
> adev->acp.acp_res[0].flags = IORESOURCE_MEM;
> adev->acp.acp_res[0].start = acp_base;
> --
> 2.25.1
>

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