From patchwork Thu Mar 2 16:38:33 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 9600981 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 0727960414 for ; Thu, 2 Mar 2017 16:53:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EB8E12858D for ; Thu, 2 Mar 2017 16:53:17 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E0103285A9; Thu, 2 Mar 2017 16:53:17 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4E6EC2858D for ; Thu, 2 Mar 2017 16:53:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754786AbdCBQuC (ORCPT ); Thu, 2 Mar 2017 11:50:02 -0500 Received: from mout.kundenserver.de ([212.227.126.134]:64652 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752109AbdCBQsW (ORCPT ); Thu, 2 Mar 2017 11:48:22 -0500 Received: from wuerfel.lan ([78.42.17.5]) by mrelayeu.kundenserver.de (mreue001 [212.227.15.129]) with ESMTPA (Nemesis) id 0M9j7n-1caQvr2nZ1-00CxoA; Thu, 02 Mar 2017 17:39:00 +0100 From: Arnd Bergmann To: kasan-dev@googlegroups.com Cc: Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-wireless@vger.kernel.org, kernel-build-reports@lists.linaro.org, "David S . Miller" , Arnd Bergmann Subject: [PATCH 25/26] isdn: eicon: mark divascapi incompatible with kasan Date: Thu, 2 Mar 2017 17:38:33 +0100 Message-Id: <20170302163834.2273519-26-arnd@arndb.de> X-Mailer: git-send-email 2.9.0 In-Reply-To: <20170302163834.2273519-1-arnd@arndb.de> References: <20170302163834.2273519-1-arnd@arndb.de> X-Provags-ID: V03:K0:8gey2kCpmAxH180uhsibFhdGi3/8Oh6Q9PE1q+pqqtLvuK4PiQF gpVtJBURo/4kyURNC2HRg0sWkf/7xbzQdo3pf/q/JFYX75QztWvL4Fn2FOztqsYXDMm2BYU 9hxZVewM99soflfpWb/2WUW0dHtvuyNdeUnku1FFlNk6T+G1AcUKQ0DfGIT0fUnvXAbIOwK LGYc+6gUbf50h7rUq9HUw== X-UI-Out-Filterresults: notjunk:1; V01:K0:FNbKnb90Pvo=:QSLOOANsUPI8avWxExZwfy cCH/BTgAZnu4Y+rf5wTQPGE4JiE9N5cGBrWh6jD5UWt/3CGllETbCM5xxhiuYLhu+CW6hwIYw ZY2TPC/Z9o/aS5k7bMuPSGsFjAtwluIQHgmGYp0g/isPqDSVy7JP64OUdtMHO3GrbnjshBOAZ XuKJrjANw8Eh2hQsZy2zYftFEPrWhj7UQrKvIws15loWkB7Qtv6kHT+bAP2BCVADx1LSk3kUM ARSbVEd4jQVnqgnmiGq2Rn8us3/+nvHveTu5vUKQilYG0herWc5RxPmEosKD+8TZBlRlBCiro XRM3LrZJ/oB0RbgldFDHify4rNesvThXYM05BrTx1hf/AtLyf31SjlIKtkPuE2RJBM7CkFTM7 d4HgVYAkmKmOwrX72PKj4zrVB6dKcptNUuxvsOZRk5EagbMck1LVhKMoVD7mefcjrpDEAQyDk jkvL/6npF1/UhERXjpgSavCCmmw4V4o+6EfkHOMUa5ZTJWMZYP7PWDVT3BqiE32clQk0DQ9Zy THt1k0rWHAhVsje1ZVmo6WPsnWPomacttXd7vfF0svLxVhWKLzb+80xAv64f40R5cInUc//ZM bsuqKPHniq9TAjNPxfki4jQEOaJEY4B3c/Tnf+b78/bOBmi/4tQAKG5jQrhZ48XP/3wyTDSPS 5zH05YWwokyHenDnS3d2JPKlx2fO9aPIPqE70jTFQ8YeFNAO8VKOyv48dse3FLrp9x3Y= Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP When CONFIG_KASAN is enabled, we have several functions that use rather large kernel stacks, e.g. drivers/isdn/hardware/eicon/message.c: In function 'group_optimization': drivers/isdn/hardware/eicon/message.c:14841:1: warning: the frame size of 864 bytes is larger than 500 bytes [-Wframe-larger-than=] drivers/isdn/hardware/eicon/message.c: In function 'add_b1': drivers/isdn/hardware/eicon/message.c:7925:1: warning: the frame size of 1008 bytes is larger than 500 bytes [-Wframe-larger-than=] drivers/isdn/hardware/eicon/message.c: In function 'add_b23': drivers/isdn/hardware/eicon/message.c:8551:1: warning: the frame size of 928 bytes is larger than 500 bytes [-Wframe-larger-than=] drivers/isdn/hardware/eicon/message.c: In function 'sig_ind': drivers/isdn/hardware/eicon/message.c:6113:1: warning: the frame size of 2112 bytes is larger than 500 bytes [-Wframe-larger-than=] To be on the safe side, and to enable a lower frame size warning limit, let's just mark this driver as broken when KASAN is in use. I have tried to reduce the stack size as I did with dozens of other drivers, but failed to come up with a good solution for this one. Signed-off-by: Arnd Bergmann --- drivers/isdn/hardware/eicon/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/isdn/hardware/eicon/Kconfig b/drivers/isdn/hardware/eicon/Kconfig index 6082b6a5ced3..b64496062421 100644 --- a/drivers/isdn/hardware/eicon/Kconfig +++ b/drivers/isdn/hardware/eicon/Kconfig @@ -31,6 +31,7 @@ config ISDN_DIVAS_PRIPCI config ISDN_DIVAS_DIVACAPI tristate "DIVA CAPI2.0 interface support" + depends on !KASAN || BROKEN help You need this to provide the CAPI interface for DIVA Server cards.