Reducing the size of ucode_prefix to 25 in the amdgpu_vcn_early_init
function. This would ensure that the total number of characters being
written into fw_name does not exceed its size of 40.
Fixes the below with gcc W=1:
drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c: In function ‘amdgpu_vcn_early_init’:
drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c:102:66: warning: ‘snprintf’ output may
be truncated before the last format character [-Wformat-truncation=]
102 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s.bin",
ucode_prefix);
| ^
drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c:102:17: note: ‘snprintf’ output between
12 and 41 bytes into a destination of size 40
102 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s.bin",
ucode_prefix);
|
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c:102:66: warning: ‘snprintf’ output may
be truncated before the last format character [-Wformat-truncation=]
102 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s.bin",
ucode_prefix);
| ^
drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c:102:17: note: ‘snprintf’ output between
12 and 41 bytes into a destination of size 40
102 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s.bin",
ucode_prefix);
|
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c:105:73: warning: ‘.bin’ directive
output may be truncated writing 4 bytes into a region of size between 2 and 31
[-Wformat-truncation=]
105 | snprintf(fw_name, sizeof(fw_name),
"amdgpu/%s_%d.bin", ucode_prefix, i);
|
^~~~
drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c:105:25: note: ‘snprintf’ output between
14 and 43 bytes into a destination of size 40
105 | snprintf(fw_name, sizeof(fw_name),
"amdgpu/%s_%d.bin", ucode_prefix, i);
|
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Cc: Alex Deucher <alexander.deuc...@amd.com>
Cc: Christian König <christian.koe...@amd.com>
Suggested-by: Lijo Lazar <lijo.la...@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmu...@amd.com>
---
v2:
- Reduced ucode_prefix instead of changing fw_name (Lijo)
- updated commit message
drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
index 9c514a606a2f..bb85772b1374 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
@@ -93,7 +93,7 @@ static void amdgpu_vcn_idle_work_handler(struct work_struct
*work);
int amdgpu_vcn_early_init(struct amdgpu_device *adev)
{
- char ucode_prefix[30];
+ char ucode_prefix[25];
char fw_name[40];
int r, i;
--
2.34.1
