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<p class="MsoNormal">Unzero char is accepted by sscanf, so when data is structure but<o:p></o:p></p>
<p class="MsoNormal">unexpectedly return error invalid;<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Signed-off-by: xinhui pan <xinhui.pan@amd.com><o:p></o:p></p>
<p class="MsoNormal">---<o:p></o:p></p>
<p class="MsoNormal">drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 2 +-<o:p></o:p></p>
<p class="MsoNormal">1 file changed, 1 insertion(+), 1 deletion(-)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c<o:p></o:p></p>
<p class="MsoNormal">index 74a65a61fd23..a5336d16aa4d 100644<o:p></o:p></p>
<p class="MsoNormal">--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c<o:p></o:p></p>
<p class="MsoNormal">+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c<o:p></o:p></p>
<p class="MsoNormal">@@ -241,7 +241,7 @@ static int amdgpu_ras_debugfs_ctrl_parse_data(struct file *f,<o:p></o:p></p>
<p class="MsoNormal"> op = 1;<o:p></o:p></p>
<p class="MsoNormal"> else if (sscanf(str, "inject %32s %8s", block_name, err) == 2)<o:p></o:p></p>
<p class="MsoNormal"> op = 2;<o:p></o:p></p>
<p class="MsoNormal">- else if (sscanf(str, "%32s", block_name) == 1)<o:p></o:p></p>
<p class="MsoNormal">+ else if (str[0] && str[1] && str[2] && str[3])<o:p></o:p></p>
<p class="MsoNormal"> /* ascii string, but commands are not matched. */<o:p></o:p></p>
<p class="MsoNormal"> return -EINVAL;<o:p></o:p></p>
<p class="MsoNormal"><o:p></o:p></p>
<p class="MsoNormal">-- <o:p></o:p></p>
<p class="MsoNormal">2.17.1<o:p></o:p></p>
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