From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 583F2C433E0 for ; Thu, 13 Aug 2020 00:57:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 39AB0207F7 for ; Thu, 13 Aug 2020 00:57:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726609AbgHMA5G (ORCPT ); Wed, 12 Aug 2020 20:57:06 -0400 Received: from mga12.intel.com ([192.55.52.136]:26628 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726526AbgHMA5G (ORCPT ); Wed, 12 Aug 2020 20:57:06 -0400 IronPort-SDR: M8q/IO+NYGuRIFOwh7a+PIITodGNmJ7oqlPKBvDIur9QW6ET80D24yFiAqSE1+5Kjm5n2sVVUy YWQLUtEnatTA== X-IronPort-AV: E=McAfee;i="6000,8403,9711"; a="133660926" X-IronPort-AV: E=Sophos;i="5.76,306,1592895600"; d="scan'208";a="133660926" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Aug 2020 17:57:06 -0700 IronPort-SDR: Vuu1xzqSFi1GuJUOwruU1Di5VRmhOxOGs7vffLvc1YkTppnVdXeZJEZNv9WtDvlo6sdP93hRRe gy0JHu2z0oVQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.76,306,1592895600"; d="scan'208";a="291217990" Received: from lkp-server01.sh.intel.com (HELO 7f1ebb311643) ([10.239.97.150]) by orsmga003.jf.intel.com with ESMTP; 12 Aug 2020 17:57:04 -0700 Received: from kbuild by 7f1ebb311643 with local (Exim 4.92) (envelope-from ) id 1k61YF-0000La-Bk; Thu, 13 Aug 2020 00:57:03 +0000 Date: Thu, 13 Aug 2020 08:56:11 +0800 From: kernel test robot To: Denis Efremov Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Julia Lawall , Stefan Achatz , Jiri Kosina , Benjamin Tissoires , linux-input@vger.kernel.org Subject: [PATCH] coccinelle: api: fix device_attr_show.cocci warnings Message-ID: <20200813005611.GA85221@8851f5375e5a> References: <202008130840.TWLDLwLA%lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202008130840.TWLDLwLA%lkp@intel.com> X-Patchwork-Hint: ignore User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org From: kernel test robot drivers/hid/hid-roccat-koneplus.c:247:8-16: WARNING: use scnprintf or sprintf drivers/hid/hid-roccat-koneplus.c:314:8-16: WARNING: use scnprintf or sprintf From Documentation/filesystems/sysfs.txt: show() must not use snprintf() when formatting the value to be returned to user space. If you can guarantee that an overflow will never happen you can use sprintf() otherwise you must use scnprintf(). Generated by: scripts/coccinelle/api/device_attr_show.cocci Fixes: abfc19ff202d ("coccinelle: api: add device_attr_show script") CC: Denis Efremov Signed-off-by: kernel test robot --- tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 7c2a69f610e64c8dec6a06a66e721f4ce1dd783a commit: abfc19ff202d287742483e15fd478ddd6ada2187 coccinelle: api: add device_attr_show script Please take the patch only if it's a positive warning. Thanks! hid-roccat-koneplus.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/hid/hid-roccat-koneplus.c +++ b/drivers/hid/hid-roccat-koneplus.c @@ -244,7 +244,7 @@ static ssize_t koneplus_sysfs_show_actua { struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev->parent->parent)); - return snprintf(buf, PAGE_SIZE, "%d\n", koneplus->actual_profile); + return scnprintf(buf, PAGE_SIZE, "%d\n", koneplus->actual_profile); } static ssize_t koneplus_sysfs_set_actual_profile(struct device *dev, @@ -311,7 +311,7 @@ static ssize_t koneplus_sysfs_show_firmw &info, KONEPLUS_SIZE_INFO); mutex_unlock(&koneplus->koneplus_lock); - return snprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version); + return scnprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version); } static DEVICE_ATTR(firmware_version, 0440, koneplus_sysfs_show_firmware_version, NULL);