From patchwork Tue Mar 7 16:58:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 13164302 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 alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 12CF5C678D4 for ; Tue, 7 Mar 2023 17:44:49 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id C7CC9150E; Tue, 7 Mar 2023 18:43:55 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz C7CC9150E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1678211085; bh=OvNyHpAAeeiTPusi5F0W7Sq5fJ9njNoI5QzTKir0DAQ=; h=From:To:Subject:Date:In-Reply-To:References:CC:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=vS/pYIfyo5RiqBki8X+e43Dl9uj47qVd9slvr449FLYGKz95e4NTmV73FTxbOSCIp 6dkJH742H/+Ojc39hUPRUCFX3lVNFxVokvMlM5IOYPL8YPBxRjSFEYWgiBxTPlc5+t scobHibTwlqK+xg76QHyv1gcMuM2icBWwRTQzZfQ= Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id 5C808F8042F; Tue, 7 Mar 2023 18:43:33 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id A4A8DF8042F; Tue, 7 Mar 2023 18:43:28 +0100 (CET) Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id D5EB2F800DF for ; Tue, 7 Mar 2023 18:43:14 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz D5EB2F800DF Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=rHQ4DIC+ 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 85CC3614FF; Tue, 7 Mar 2023 17:43:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7EC19C433EF; Tue, 7 Mar 2023 17:43:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1678210992; bh=OvNyHpAAeeiTPusi5F0W7Sq5fJ9njNoI5QzTKir0DAQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rHQ4DIC+XUApDr5EN0ZM4yvs667pwT0jq3xxjpjZRY0CjmTXuTdj6hn2TMx4kFusH zzhPVFKSa/gsKcy0h6xTL7KT7TkdO0PfXX9y3b64laCyJEhakJIyDInlwrVGpSoORN A6c3RKMVdFaM7QUqYilwoAfbSdcKUyUQKth5r6tw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Subject: [PATCH 6.2 0718/1001] ASoC: kirkwood: Iterate over array indexes instead of using pointer math Date: Tue, 7 Mar 2023 17:58:10 +0100 Message-Id: <20230307170052.822495610@linuxfoundation.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230307170022.094103862@linuxfoundation.org> References: <20230307170022.094103862@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Message-ID-Hash: XZVD6SD6GUGVAMR3VWUYYBZPSKVUJCI5 X-Message-ID-Hash: XZVD6SD6GUGVAMR3VWUYYBZPSKVUJCI5 X-MailFrom: gregkh@linuxfoundation.org X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: Greg Kroah-Hartman , patches@lists.linux.dev, Liam Girdwood , Mark Brown , Takashi Iwai , alsa-devel@alsa-project.org, Kees Cook , Sasha Levin X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: From: Kees Cook [ Upstream commit b3bcedc0402fcdc5c8624c433562d9d1882749d8 ] Walking the dram->cs array was seen as accesses beyond the first array item by the compiler. Instead, use the array index directly. This allows for run-time bounds checking under CONFIG_UBSAN_BOUNDS as well. Seen with GCC 13 with -fstrict-flex-arrays: ../sound/soc/kirkwood/kirkwood-dma.c: In function 'kirkwood_dma_conf_mbus_windows.constprop': ../sound/soc/kirkwood/kirkwood-dma.c:90:24: warning: array subscript 0 is outside array bounds of 'const struct mbus_dram_window[0]' [-Warray-bounds=] 90 | if ((cs->base & 0xffff0000) < (dma & 0xffff0000)) { | ~~^~~~~~ Cc: Liam Girdwood Cc: Mark Brown Cc: Jaroslav Kysela Cc: Takashi Iwai Cc: alsa-devel@alsa-project.org Signed-off-by: Kees Cook Link: https://lore.kernel.org/r/20230127224128.never.410-kees@kernel.org Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/kirkwood/kirkwood-dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/kirkwood/kirkwood-dma.c b/sound/soc/kirkwood/kirkwood-dma.c index 700a18561a940..640cebd2983e2 100644 --- a/sound/soc/kirkwood/kirkwood-dma.c +++ b/sound/soc/kirkwood/kirkwood-dma.c @@ -86,7 +86,7 @@ kirkwood_dma_conf_mbus_windows(void __iomem *base, int win, /* try to find matching cs for current dma address */ for (i = 0; i < dram->num_cs; i++) { - const struct mbus_dram_window *cs = dram->cs + i; + const struct mbus_dram_window *cs = &dram->cs[i]; if ((cs->base & 0xffff0000) < (dma & 0xffff0000)) { writel(cs->base & 0xffff0000, base + KIRKWOOD_AUDIO_WIN_BASE_REG(win));