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From 1d7a22f3f629504918dde12ca0b2cc605ef28256 Mon Sep 17 00:00:00 2001
From: xinhui pan <xinhui.pan@amd.com>
Date: Mon, 11 Mar 2019 18:10:57 +0800
Subject: [PATCH 1606/2940] drm/amdgpu: Fix ras debugfs data parse
Unzero char is accepted by sscanf, so when data is structure but
unexpectedly return error invalid;
Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
index 74a65a61fd23..1acaa8473629 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
@@ -241,7 +241,7 @@ static int amdgpu_ras_debugfs_ctrl_parse_data(struct file *f,
op = 1;
else if (sscanf(str, "inject %32s %8s", block_name, err) == 2)
op = 2;
- else if (sscanf(str, "%32s", block_name) == 1)
+ else if (str[0] && str[1] && str[2] && str[3])
/* ascii string, but commands are not matched. */
return -EINVAL;
--
2.17.1
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