linux-kernel - [PATCH] lkdtm: cfi: use NULL for a null pointer rather than zero

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Date:   Sun, 12 Jun 2022 21:27:08 +0100
From:   Colin Ian King <colin.i.king@...il.com>
To:     Kees Cook <keescook@...omium.org>, Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] lkdtm: cfi: use NULL for a null pointer rather than zero

There is a pointer being initialized with a zero, use NULL instead.

Cleans up sparse warning:
drivers/misc/lkdtm/cfi.c:100:27: warning: Using plain integer as NULL pointer

Signed-off-by: Colin Ian King <colin.i.king@...il.com>
---
 drivers/misc/lkdtm/cfi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/misc/lkdtm/cfi.c b/drivers/misc/lkdtm/cfi.c
index 666a7f4bc137..71483cb1e422 100644
--- a/drivers/misc/lkdtm/cfi.c
+++ b/drivers/misc/lkdtm/cfi.c
@@ -97,7 +97,7 @@ static volatile int force_check;
 static void lkdtm_CFI_BACKWARD(void)
 {
 	/* Use calculated gotos to keep labels addressable. */
-	void *labels[] = {0, &&normal, &&redirected, &&check_normal, &&check_redirected};
+	void *labels[] = { NULL, &&normal, &&redirected, &&check_normal, &&check_redirected };
 
 	pr_info("Attempting unchecked stack return address redirection ...\n");
 
-- 
2.35.3