From patchwork Thu Sep 21 18:07:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Damien Le Moal X-Patchwork-Id: 725112 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 763ADE7D0AB for ; Thu, 21 Sep 2023 22:11:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232983AbjIUWLP (ORCPT ); Thu, 21 Sep 2023 18:11:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53396 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229765AbjIUWK5 (ORCPT ); Thu, 21 Sep 2023 18:10:57 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7EB52B013A; Thu, 21 Sep 2023 11:08:19 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D4053C433CA; Thu, 21 Sep 2023 18:08:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1695319699; bh=G7myf7/7kymZWUjrZz61j4PQ6SQiep0pKQ5dhdCyLtc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ghlKenue/uvvjvH0a5PRtuN2WL2FBzb9jmZpzloX2p0QG2wM81S2S1DqGIqyIIQou 5SMKpnBBmrPkI1S60d8mZLOIy/kncFtsREyb0eHZyjfFmwhH9xc1/R1HKZGVA9rQ9j J/iHdaVR//UhEZmLdnuFk3Jyv6RXklqUlj/cUc+eX7lVc2XFp9Qg1boj+cLnypcMLi vFdBQg16ZYWLb1kl1lhwOqwvFhyOFbhrVdLSBTGkKqi/Q/dsIVFP22+N4jtXEqmEVX DCsS+I3xNMe37ZIRTjPSgBa2zc+zQdtQtuftz6xzPf0Wj6NjN1bqpmcYh7FplTINLi 1zW9pTJzy7h3w== From: Damien Le Moal To: linux-ide@vger.kernel.org Cc: linux-scsi@vger.kernel.org, "Martin K . Petersen" , John Garry , Rodrigo Vivi , Paul Ausbeck , Kai-Heng Feng , Joe Breuer , Geert Uytterhoeven , Chia-Lin Kao Subject: [PATCH v5 10/23] ata: libata-core: Fix compilation warning in ata_dev_config_ncq() Date: Fri, 22 Sep 2023 03:07:45 +0900 Message-ID: <20230921180758.955317-11-dlemoal@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230921180758.955317-1-dlemoal@kernel.org> References: <20230921180758.955317-1-dlemoal@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org The 24 bytes length allocated to the ncq_desc string in ata_dev_config_lba() for ata_dev_config_ncq() to use is too short, causing the following gcc compilation warnings when compiling with W=1: drivers/ata/libata-core.c: In function ‘ata_dev_configure’: drivers/ata/libata-core.c:2378:56: warning: ‘%d’ directive output may be truncated writing between 1 and 2 bytes into a region of size between 1 and 11 [-Wformat-truncation=] 2378 | snprintf(desc, desc_sz, "NCQ (depth %d/%d)%s", hdepth, | ^~ In function ‘ata_dev_config_ncq’, inlined from ‘ata_dev_config_lba’ at drivers/ata/libata-core.c:2649:8, inlined from ‘ata_dev_configure’ at drivers/ata/libata-core.c:2952:9: drivers/ata/libata-core.c:2378:41: note: directive argument in the range [1, 32] 2378 | snprintf(desc, desc_sz, "NCQ (depth %d/%d)%s", hdepth, | ^~~~~~~~~~~~~~~~~~~~~ drivers/ata/libata-core.c:2378:17: note: ‘snprintf’ output between 16 and 31 bytes into a destination of size 24 2378 | snprintf(desc, desc_sz, "NCQ (depth %d/%d)%s", hdepth, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2379 | ddepth, aa_desc); | ~~~~~~~~~~~~~~~~ Avoid these warnings and the potential truncation by changing the size of the ncq_desc string to 32 characters. Signed-off-by: Damien Le Moal Reviewed-by: Hannes Reinecke Tested-by: Geert Uytterhoeven --- drivers/ata/libata-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 261445c1851b..d8cc1e27a125 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -2619,7 +2619,7 @@ static int ata_dev_config_lba(struct ata_device *dev) { const u16 *id = dev->id; const char *lba_desc; - char ncq_desc[24]; + char ncq_desc[32]; int ret; dev->flags |= ATA_DFLAG_LBA;