From patchwork Fri Jul 30 08:50:00 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chunfeng Yun X-Patchwork-Id: 12410675 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=-17.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, URIBL_BLOCKED,USER_AGENT_GIT 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 A2923C4338F for ; Fri, 30 Jul 2021 08:55:18 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6BDC260F6B for ; Fri, 30 Jul 2021 08:55:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6BDC260F6B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=kfSekh+ymZCDJ16zjew7EnOpNKcusV1O4uM4+m7RCok=; b=FPRhG5zWn9Jyxq TcjT0jfZHlvHyUmKg7Y58Nr6azVI2NZ0sJWciVn+BjzgjukTpn8y7/ESMN2AFviN/kYD8Z+lzWNCN fXAE4t0S8+VbmiBEN3awm8JlI76sLf4nIUykVrk67E3y0qCkV458VkYwwGYfS8+iYyfPkpfHIfwrX fY0/E82a57oqfNnWd1lyXMBP52Fwn2veuTupC8A6jMvcmNsKnHVXSOG7KwnXaiUiRU78vedUP/qPI G+ycwqmIzh29uDuqX1ujKIwNGWE27pm0+5aPWN2iPzycu46YMeGS+NXEUF2eIEHXvYpbET0E53Qq7 /D9ReKa78Y4OubGFvSpQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m9OFo-007j6E-Gd; Fri, 30 Jul 2021 08:52:28 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m9OEI-007iTp-Fs; Fri, 30 Jul 2021 08:50:55 +0000 X-UUID: 02f280f6d0594aea8fdb8beace02e022-20210730 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=HuNSyD8vUU5hNZqQtPalwKZvvS1ZRv1/JQC8FUHTw34=; b=IxP6kckmTrUQjkaLwNueeJpyvoNIENDY0aFvYhFPuvsB7QT56bKx3A+aUuFaBmO1fqKaDqDaThsXHztv1ceLo7U4w9d1Y3/mVgagWFSYMLGkQDClWs1WLF9aw539OIJ6AgnDtPFAEGYN60sBNdmGm0IpVabglQ7+RwdEHjP/CJg=; X-UUID: 02f280f6d0594aea8fdb8beace02e022-20210730 Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1354222362; Fri, 30 Jul 2021 01:50:46 -0700 Received: from MTKMBS06N1.mediatek.inc (172.21.101.129) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 30 Jul 2021 01:50:45 -0700 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs06n1.mediatek.inc (172.21.101.129) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 30 Jul 2021 16:50:44 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 30 Jul 2021 16:50:43 +0800 From: Chunfeng Yun To: Rob Herring , Mathias Nyman CC: Chunfeng Yun , Greg Kroah-Hartman , Matthias Brugger , , , , , , Eddie Hung Subject: [PATCH 09/11] usb: xhci-mtk: check boundary before check tt Date: Fri, 30 Jul 2021 16:50:00 +0800 Message-ID: <1627635002-24521-9-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1627635002-24521-1-git-send-email-chunfeng.yun@mediatek.com> References: <1627635002-24521-1-git-send-email-chunfeng.yun@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210730_015054_583893_9D8B5A6F X-CRM114-Status: GOOD ( 11.23 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org check_sch_tt() will access fs_bus_bw[] array, check boundary firstly to avoid out-of-bounds issue. Signed-off-by: Chunfeng Yun --- drivers/usb/host/xhci-mtk-sch.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/usb/host/xhci-mtk-sch.c b/drivers/usb/host/xhci-mtk-sch.c index 10c0f0f6461f..c2f13d69c607 100644 --- a/drivers/usb/host/xhci-mtk-sch.c +++ b/drivers/usb/host/xhci-mtk-sch.c @@ -600,13 +600,14 @@ static int check_sch_bw(struct mu3h_sch_bw_info *sch_bw, * and find a microframe where its worst bandwidth is minimum. */ for (offset = 0; offset < sch_ep->esit; offset++) { - ret = check_sch_tt(sch_ep, offset); - if (ret) - continue; if ((offset + sch_ep->num_budget_microframes) > esit_boundary) break; + ret = check_sch_tt(sch_ep, offset); + if (ret) + continue; + worst_bw = get_max_bw(sch_bw, sch_ep, offset); if (worst_bw > bw_boundary) continue;