linux-kernel - [PATCH v2 1/4] kdb: Replace deprecated strcpy() with memcpy() in kdb

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Message-ID: <20250819095915.711085-1-thorsten.blum@linux.dev>
Date: Tue, 19 Aug 2025 11:59:03 +0200
From: Thorsten Blum <thorsten.blum@...ux.dev>
To: Jason Wessel <jason.wessel@...driver.com>,
	Daniel Thompson <danielt@...nel.org>,
	Douglas Anderson <dianders@...omium.org>,
	"Dr. David Alan Gilbert" <linux@...blig.org>,
	Zhang Heng <zhangheng@...inos.cn>
Cc: linux-hardening@...r.kernel.org,
	Thorsten Blum <thorsten.blum@...ux.dev>,
	kgdb-bugreport@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/4] kdb: Replace deprecated strcpy() with memcpy() in kdb_strdup()

strcpy() is deprecated; use memcpy() instead.

Link: https://github.com/KSPP/linux/issues/88
Reviewed-by: Douglas Anderson <dianders@...omium.org>
Signed-off-by: Thorsten Blum <thorsten.blum@...ux.dev>
---
 kernel/debug/kdb/kdb_support.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/kernel/debug/kdb/kdb_support.c b/kernel/debug/kdb/kdb_support.c
index 05b137e7dcb9..d36281142fa1 100644
--- a/kernel/debug/kdb/kdb_support.c
+++ b/kernel/debug/kdb/kdb_support.c
@@ -23,6 +23,7 @@
 #include <linux/uaccess.h>
 #include <linux/kdb.h>
 #include <linux/slab.h>
+#include <linux/string.h>
 #include <linux/ctype.h>
 #include "kdb_private.h"
 
@@ -246,11 +247,12 @@ void kdb_symbol_print(unsigned long addr, const kdb_symtab_t *symtab_p,
  */
 char *kdb_strdup(const char *str, gfp_t type)
 {
-	int n = strlen(str)+1;
+	size_t n = strlen(str) + 1;
 	char *s = kmalloc(n, type);
 	if (!s)
 		return NULL;
-	return strcpy(s, str);
+	memcpy(s, str, n);
+	return s;
 }
 
 /*
-- 
2.50.1