On 3/22/2024 12:24 PM, Srinivasan Shanmugam wrote:
> The total size of the fw_name buffer is 8 (for "amdgpu/") + 30 (for
> ucode_prefix) + 5 (for "_pfp") + 5 (for "_wks") + 5 (for ".bin") = 53
> characters.
>
> Fixes the below with gcc W=1:
> drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c: In function ‘gfx_v10_0_early_init’:
> drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:3982:58: warning: ‘%s’ directive output may be truncated writing up to 4 bytes into a region of size between 0 and 29 [-Wformat-truncation=]
> 3982 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_pfp%s.bin", ucode_prefix, wks);
> | ^~
> drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:3982:9: note: ‘snprintf’ output between 16 and 49 bytes into a destination of size 40
> 3982 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_pfp%s.bin", ucode_prefix, wks);
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:3988:57: warning: ‘%s’ directive output may be truncated writing up to 4 bytes into a region of size between 1 and 30 [-Wformat-truncation=]
> 3988 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_me%s.bin", ucode_prefix, wks);
> | ^~
> drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:3988:9: note: ‘snprintf’ output between 15 and 48 bytes into a destination of size 40
> 3988 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_me%s.bin", ucode_prefix, wks);
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:3994:57: warning: ‘%s’ directive output may be truncated writing up to 4 bytes into a region of size between 1 and 30 [-Wformat-truncation=]
> 3994 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_ce%s.bin", ucode_prefix, wks);
> | ^~
> drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:3994:9: note: ‘snprintf’ output between 15 and 48 bytes into a destination of size 40
> 3994 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_ce%s.bin", ucode_prefix, wks);
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:4001:62: warning: ‘_rlc.bin’ directive output may be truncated writing 8 bytes into a region of size between 4 and 33 [-Wformat-truncation=]
> 4001 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_rlc.bin", ucode_prefix);
> | ^~~~~~~~
> drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:4001:17: note: ‘snprintf’ output between 16 and 45 bytes into a destination of size 40
> 4001 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_rlc.bin", ucode_prefix);
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:4017:58: warning: ‘%s’ directive output may be truncated writing up to 4 bytes into a region of size between 0 and 29 [-Wformat-truncation=]
> 4017 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_mec%s.bin", ucode_prefix, wks);
> | ^~
> drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:4017:9: note: ‘snprintf’ output between 16 and 49 bytes into a destination of size 40
> 4017 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_mec%s.bin", ucode_prefix, wks);
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:4024:54: warning: ‘_mec2’ directive output may be truncated writing 5 bytes into a region of size between 4 and 33 [-Wformat-truncation=]
> 4024 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_mec2%s.bin", ucode_prefix, wks);
> | ^~~~~
> drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c:4024:9: note: ‘snprintf’ output between 17 and 50 bytes into a destination of size 40
> 4024 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_mec2%s.bin", ucode_prefix, wks);
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Cc: Alex Deucher <alexander.deucher@xxxxxxx>
> Cc: Christian König <christian.koenig@xxxxxxx>
> Suggested-by: Lijo Lazar <lijo.lazar@xxxxxxx>
> Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@xxxxxxx>
Reviewed-by: Lijo Lazar <lijo.lazar@xxxxxxx>
Thanks,
Lijo
> ---
> drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
> index f90905ef32c7..d524f1a353ed 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
> @@ -3964,7 +3964,7 @@ static void gfx_v10_0_check_gfxoff_flag(struct amdgpu_device *adev)
>
> static int gfx_v10_0_init_microcode(struct amdgpu_device *adev)
> {
> - char fw_name[40];
> + char fw_name[53];
> char ucode_prefix[30];
> const char *wks = "";
> int err;
