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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 079CFC77B7E for ; Sun, 28 May 2023 19:32:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230289AbjE1Tcv (ORCPT ); Sun, 28 May 2023 15:32:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49390 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230286AbjE1Tcu (ORCPT ); Sun, 28 May 2023 15:32:50 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7E9FDA3 for ; Sun, 28 May 2023 12:32:49 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E21ED61DBA for ; Sun, 28 May 2023 19:32:48 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0C9ABC433D2; Sun, 28 May 2023 19:32:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1685302368; bh=XpT/uLPkQkfBq7ruSn+8ZeTy22ee0bpTz6I5pnEGt4g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Blh/6s5VrkWen6WYeOK9lydeWFVf4uSR24DTgkRl0wK8K/y5hRE4QXp67etNjn+u7 O6sMg4G5qvHOj+HSbSPAQpZ6BCWTTT+mgq3qzoiQ4wkWids7e2El8wsU19Z+fdSpeQ 52Am1vYrsqvLWIX/ZqO2qWnI702KQc11ORUs+Qao= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Dan Carpenter , =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , Hans de Goede Subject: [PATCH 6.3 107/127] platform/mellanox: mlxbf-pmc: fix sscanf() error checking Date: Sun, 28 May 2023 20:11:23 +0100 Message-Id: <20230528190839.757623807@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230528190836.161231414@linuxfoundation.org> References: <20230528190836.161231414@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Dan Carpenter commit 95e4b25192e9238fd2dbe85d96dd2f8fd1ce9d14 upstream. The sscanf() function never returns negatives. It returns the number of items successfully read. Fixes: 1a218d312e65 ("platform/mellanox: mlxbf-pmc: Add Mellanox BlueField PMC driver") Signed-off-by: Dan Carpenter Reviewed-by: Ilpo Järvinen Link: https://lore.kernel.org/r/4ccdfd28-099b-40bf-8d77-ad4ea2e76b93@kili.mountain Reviewed-by: Hans de Goede Signed-off-by: Hans de Goede Signed-off-by: Greg Kroah-Hartman --- drivers/platform/mellanox/mlxbf-pmc.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) --- a/drivers/platform/mellanox/mlxbf-pmc.c +++ b/drivers/platform/mellanox/mlxbf-pmc.c @@ -1348,9 +1348,8 @@ static int mlxbf_pmc_map_counters(struct for (i = 0; i < pmc->total_blocks; ++i) { if (strstr(pmc->block_name[i], "tile")) { - ret = sscanf(pmc->block_name[i], "tile%d", &tile_num); - if (ret < 0) - return ret; + if (sscanf(pmc->block_name[i], "tile%d", &tile_num) != 1) + return -EINVAL; if (tile_num >= pmc->tile_count) continue;