From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752445AbdFAQqW (ORCPT ); Thu, 1 Jun 2017 12:46:22 -0400 Received: from shards.monkeyblade.net ([184.105.139.130]:56950 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752295AbdFAQpv (ORCPT ); Thu, 1 Jun 2017 12:45:51 -0400 Date: Thu, 01 Jun 2017 12:45:44 -0400 (EDT) Message-Id: <20170601.124544.426768385909160370.davem@davemloft.net> To: matorola@gmail.com Cc: sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: sparc gcc 7.1 compile issue From: David Miller In-Reply-To: References: <20170531.171008.528800003662477033.davem@davemloft.net> <20170601121224.GE26922@waldemar-brodkorb.de> X-Mailer: Mew version 6.7 on Emacs 24.5 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=iso-8859-7 X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Thu, 01 Jun 2017 09:04:09 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by mail.home.local id v51GkeL6018622 From: Anatoly Pugachev Date: Thu, 1 Jun 2017 15:46:04 +0300 > on the same topic , latest git does not compile for me with gcc-7.0.1 > gcc version 7.0.1 20170407 (experimental) [trunk revision 246759] > (Debian 7-20170407-1) > > $ make > ... > CC arch/sparc/kernel/ds.o > arch/sparc/kernel/ds.c: In function ˇregister_services˘: > arch/sparc/kernel/ds.c:912:3: error: ˇstrcpy˘: writing at least 1 byte > into a region of size 0 overflows the destination > [-Werror=stringop-overflow ] > strcpy(pbuf.req.svc_id, cp->service_id); > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ That's easy enough to fix, I've pushed the patch below to 'sparc' GIT. > MODPOST vmlinux.o > ipc/built-in.o: In function `mq_attr_ok.isra.0': > mqueue.c:(.text+0xc490): undefined reference to `__multi3' > drivers/built-in.o: In function `dm_vcalloc': > (.text+0xc9e98): undefined reference to `__multi3' > Makefile:997: recipe for target 'vmlinux' failed > make: *** [vmlinux] Error 1 This, on the other hand.... wonder why it wants to do a 128-bit multiply when the MQ attribute struct is just 64-bit values... ==================== >>From 0fde7ad71ee371ede73b3f326e58f9e8d102feb6 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 1 Jun 2017 09:42:46 -0700 Subject: [PATCH] sparc64: Fix build warnings with gcc 7. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit arch/sparc/kernel/ds.c: In function ˇregister_services˘: arch/sparc/kernel/ds.c:912:3: error: ˇstrcpy˘: writing at least 1 byte into a region of size 0 overflows the destination Reported-by: Anatoly Pugachev Signed-off-by: David S. Miller --- arch/sparc/kernel/ds.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/sparc/kernel/ds.c b/arch/sparc/kernel/ds.c index b542cc7..f87265a 100644 --- a/arch/sparc/kernel/ds.c +++ b/arch/sparc/kernel/ds.c @@ -909,7 +909,7 @@ static int register_services(struct ds_info *dp) pbuf.req.handle = cp->handle; pbuf.req.major = 1; pbuf.req.minor = 0; - strcpy(pbuf.req.svc_id, cp->service_id); + strcpy(pbuf.id_buf, cp->service_id); err = __ds_send(lp, &pbuf, msg_len); if (err > 0) -- 2.1.2.532.g19b5d50