[PATCH] drm/amd: Use a constant format string for amdgpu_ucode_request

Alex Deucher alexdeucher at gmail.com
Mon Aug 5 20:12:48 UTC 2024


Applied.  Thanks!

On Fri, Jul 19, 2024 at 6:35 AM Arnd Bergmann <arnd at kernel.org> wrote:
>
> From: Arnd Bergmann <arnd at arndb.de>
>
> Multiple files in amdgpu call amdgpu_ucode_request() with a fw_name
> variable that the compiler cannot check for being a valid format string,
> as seen by enabling the (default-disabled) -Wformat-security option:
>
> drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c: In function 'amdgpu_mes_init_microcode':
> drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c:1517:61: error: format not a string literal and no format arguments [-Werror=format-security]
>  1517 |         r = amdgpu_ucode_request(adev, &adev->mes.fw[pipe], fw_name);
>       |                                                             ^~~~~~~
> drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c: In function 'amdgpu_uvd_sw_init':
> drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c:263:9: error: format not a string literal and no format arguments [-Werror=format-security]
>   263 |         r = amdgpu_ucode_request(adev, &adev->uvd.fw, fw_name);
>       |         ^
> drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c: In function 'amdgpu_vce_sw_init':
> drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c:161:9: error: format not a string literal and no format arguments [-Werror=format-security]
>   161 |         r = amdgpu_ucode_request(adev, &adev->vce.fw, fw_name);
>       |         ^
> drivers/gpu/drm/amd/amdgpu/amdgpu_umsch_mm.c: In function 'amdgpu_umsch_mm_init_microcode':
> drivers/gpu/drm/amd/amdgpu/amdgpu_umsch_mm.c:590:9: error: format not a string literal and no format arguments [-Werror=format-security]
>   590 |         r = amdgpu_ucode_request(adev, &adev->umsch_mm.fw, fw_name);
>       |         ^
> drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c: In function 'amdgpu_cgs_get_firmware_info':
> drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c:417:72: error: format not a string literal and no format arguments [-Werror=format-security]
>   417 |                         err = amdgpu_ucode_request(adev, &adev->pm.fw, fw_name);
>       |                                                                        ^~~~~~~
> drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c: In function 'load_dmcu_fw':
> drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:2221:9: error: format not a string literal and no format arguments [-Werror=format-security]
>  2221 |         r = amdgpu_ucode_request(adev, &adev->dm.fw_dmcu, fw_name_dmcu);
>       |         ^
> drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c: In function 'dm_init_microcode':
> drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:5147:9: error: format not a string literal and no format arguments [-Werror=format-security]
>  5147 |         r = amdgpu_ucode_request(adev, &adev->dm.dmub_fw, fw_name_dmub);
>       |         ^
>
> Change these all to use a "%s" format with the actual name as an argument,
> to let the compiler prove this to be correct.
>
> Fixes: e5a7d047f41b ("drm/amd: Use `amdgpu_ucode_*` helpers for CGS")
> Fixes: 52215e2a5d4a ("drm/amd: Use `amdgpu_ucode_*` helpers for VCE")
> Signed-off-by: Arnd Bergmann <arnd at arndb.de>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c           | 2 +-
>  drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c           | 2 +-
>  drivers/gpu/drm/amd/amdgpu/amdgpu_umsch_mm.c      | 2 +-
>  drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c           | 2 +-
>  drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c           | 2 +-
>  drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 ++--
>  6 files changed, 7 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
> index c3d89088123d..16153d275d7a 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
> @@ -414,7 +414,7 @@ static int amdgpu_cgs_get_firmware_info(struct cgs_device *cgs_device,
>                                 return -EINVAL;
>                         }
>
> -                       err = amdgpu_ucode_request(adev, &adev->pm.fw, fw_name);
> +                       err = amdgpu_ucode_request(adev, &adev->pm.fw, "%s", fw_name);
>                         if (err) {
>                                 DRM_ERROR("Failed to load firmware \"%s\"", fw_name);
>                                 amdgpu_ucode_release(&adev->pm.fw);
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
> index e499d6ba306b..5d89a9a6f910 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
> @@ -1514,7 +1514,7 @@ int amdgpu_mes_init_microcode(struct amdgpu_device *adev, int pipe)
>                          pipe == AMDGPU_MES_SCHED_PIPE ? "" : "1");
>         }
>
> -       r = amdgpu_ucode_request(adev, &adev->mes.fw[pipe], fw_name);
> +       r = amdgpu_ucode_request(adev, &adev->mes.fw[pipe], "%s", fw_name);
>         if (r && need_retry && pipe == AMDGPU_MES_SCHED_PIPE) {
>                 dev_info(adev->dev, "try to fall back to %s_mes.bin\n", ucode_prefix);
>                 r = amdgpu_ucode_request(adev, &adev->mes.fw[pipe],
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_umsch_mm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_umsch_mm.c
> index fbc2852278e1..6162582d0aa2 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_umsch_mm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_umsch_mm.c
> @@ -587,7 +587,7 @@ int amdgpu_umsch_mm_init_microcode(struct amdgpu_umsch_mm *umsch)
>                 break;
>         }
>
> -       r = amdgpu_ucode_request(adev, &adev->umsch_mm.fw, fw_name);
> +       r = amdgpu_ucode_request(adev, &adev->umsch_mm.fw, "%s", fw_name);
>         if (r) {
>                 release_firmware(adev->umsch_mm.fw);
>                 adev->umsch_mm.fw = NULL;
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
> index 07d930339b07..775c09d57222 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
> @@ -260,7 +260,7 @@ int amdgpu_uvd_sw_init(struct amdgpu_device *adev)
>                 return -EINVAL;
>         }
>
> -       r = amdgpu_ucode_request(adev, &adev->uvd.fw, fw_name);
> +       r = amdgpu_ucode_request(adev, &adev->uvd.fw, "%s", fw_name);
>         if (r) {
>                 dev_err(adev->dev, "amdgpu_uvd: Can't validate firmware \"%s\"\n",
>                         fw_name);
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
> index 968ca2c84ef7..51b045de409d 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
> @@ -158,7 +158,7 @@ int amdgpu_vce_sw_init(struct amdgpu_device *adev, unsigned long size)
>                 return -EINVAL;
>         }
>
> -       r = amdgpu_ucode_request(adev, &adev->vce.fw, fw_name);
> +       r = amdgpu_ucode_request(adev, &adev->vce.fw, "%s", fw_name);
>         if (r) {
>                 dev_err(adev->dev, "amdgpu_vce: Can't validate firmware \"%s\"\n",
>                         fw_name);
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> index 7e7929f24ae4..80b7dc651f6b 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -2218,7 +2218,7 @@ static int load_dmcu_fw(struct amdgpu_device *adev)
>                 return 0;
>         }
>
> -       r = amdgpu_ucode_request(adev, &adev->dm.fw_dmcu, fw_name_dmcu);
> +       r = amdgpu_ucode_request(adev, &adev->dm.fw_dmcu, "%s", fw_name_dmcu);
>         if (r == -ENODEV) {
>                 /* DMCU firmware is not necessary, so don't raise a fuss if it's missing */
>                 DRM_DEBUG_KMS("dm: DMCU firmware not found\n");
> @@ -5144,7 +5144,7 @@ static int dm_init_microcode(struct amdgpu_device *adev)
>                 /* ASIC doesn't support DMUB. */
>                 return 0;
>         }
> -       r = amdgpu_ucode_request(adev, &adev->dm.dmub_fw, fw_name_dmub);
> +       r = amdgpu_ucode_request(adev, &adev->dm.dmub_fw, "%s", fw_name_dmub);
>         return r;
>  }
>
> --
> 2.39.2
>


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