Check the user input and phy_id value range to fix
"Using uninitialized value phy_id"
Signed-off-by: Ma Jun <Jun.Ma2@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c
index 8ed0e073656f..41ebe690eeff 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c
@@ -135,6 +135,10 @@ static ssize_t amdgpu_securedisplay_debugfs_write(struct file *f, const char __u
mutex_unlock(&psp->securedisplay_context.mutex);
break;
case 2:
+ if (size < 3 || phy_id >= TA_SECUREDISPLAY_MAX_PHY) {
+ dev_err(adev->dev, "Invalid input: %s\n", str);
+ return -EINVAL;
+ }
mutex_lock(&psp->securedisplay_context.mutex);
psp_prep_securedisplay_cmd_buf(psp, &securedisplay_cmd,
TA_SECUREDISPLAY_COMMAND__SEND_ROI_CRC);
--
2.34.1
