From d031e68676e9c0f6272b91adfe2614ce2fec556d Mon Sep 17 00:00:00 2001
From: Yang Liu <liuyang22@iscas.ac.cn>
Date: Fri, 22 Sep 2023 08:40:27 +0000
Subject: [PATCH] i#3544 RV64: Fix read_cache_line

For file size less than 8 bytes, using an uninitialized byte array may cause error, returning a cache line size that is wrong and too large.
---
 core/arch/riscv64/proc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/arch/riscv64/proc.c b/core/arch/riscv64/proc.c
index 86e05d63baa..d93b1169a86 100644
--- a/core/arch/riscv64/proc.c
+++ b/core/arch/riscv64/proc.c
@@ -48,7 +48,7 @@ static int num_opmask_registers;
 static size_t
 read_cache_line(const char *fname)
 {
-    char b[sizeof(uint64)], tmp;
+    char b[sizeof(uint64)] = { 0 }, tmp;
     size_t res = 0;
     ssize_t n, i;
     file_t f;