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

Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20220612202708.2754270-1-colin.i.king@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/misc/lkdtm/cfi.c b/drivers/misc/lkdtm/cfi.c
index 666a7f4..71483cb 100644 (file)
--- 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");