From 730dd50f84b51664e1c13258c21413e49f93394d Mon Sep 17 00:00:00 2001 From: Srinivasan Shanmugam Date: Fri, 22 Mar 2024 12:32:47 +0530 Subject: [PATCH] drm/amdgpu: Fix truncation in smu_v11_0_init_microcode MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Reducing the size of ucode_prefix to 25 in the smu_v11_0_init_microcode function. we ensure that fw_name can accommodate the maximum possible string size Fixes the below with gcc W=1: drivers/gpu/drm/amd/amdgpu/../pm/swsmu/smu11/smu_v11_0.c: In function ‘smu_v11_0_init_microcode’: drivers/gpu/drm/amd/amdgpu/../pm/swsmu/smu11/smu_v11_0.c:110:54: warning: ‘.bin’ directive output may be truncated writing 4 bytes into a region of size between 0 and 29 [-Wformat-truncation=] 110 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s.bin", ucode_prefix); | ^~~~ drivers/gpu/drm/amd/amdgpu/../pm/swsmu/smu11/smu_v11_0.c:110:9: note: ‘snprintf’ output between 12 and 41 bytes into a destination of size 36 110 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s.bin", ucode_prefix); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Cc: Alex Deucher Cc: Christian König Suggested-by: Lijo Lazar Signed-off-by: Srinivasan Shanmugam Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c index f6545093bfc14..5e5da9b16718f 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c @@ -93,7 +93,7 @@ static void smu_v11_0_poll_baco_exit(struct smu_context *smu) int smu_v11_0_init_microcode(struct smu_context *smu) { struct amdgpu_device *adev = smu->adev; - char ucode_prefix[30]; + char ucode_prefix[25]; char fw_name[SMU_FW_NAME_LEN]; int err = 0; const struct smc_firmware_header_v1_0 *hdr; -- 2.30.2