From 9b2017de0ca8e917262dfca4a8a4e81de1190717 Mon Sep 17 00:00:00 2001
From: "Bill(Shuzhou) Liu" <shuzhou.liu@amd.com>
Date: Mon, 28 Feb 2022 15:29:23 -0500
Subject: [PATCH] Prevent stack buffer overflow

readlink() does not append a null byte to buffer. Initialize the
tpath to prevent stack buffer overflow.

Change-Id: I17895dc3576b080a0c35bd0528a5b83223ec1c1b


[ROCm/rocm_smi_lib commit: 4b65b0307fbfb4aaccf3ad7eb834f082141f6f16]
---
 projects/rocm-smi-lib/src/rocm_smi_main.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/projects/rocm-smi-lib/src/rocm_smi_main.cc b/projects/rocm-smi-lib/src/rocm_smi_main.cc
index 171fc9d803..18bf121e1f 100755
--- a/projects/rocm-smi-lib/src/rocm_smi_main.cc
+++ b/projects/rocm-smi-lib/src/rocm_smi_main.cc
@@ -183,6 +183,7 @@ static uint32_t ConstructBDFID(std::string path, uint64_t *bdfid) {
   assert(bdfid != nullptr);
   char tpath[256];
   ssize_t ret;
+  memset(tpath,0,256);
 
   ret = readlink(path.c_str(), tpath, 256);