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=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,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 6D12FC43219 for ; Tue, 30 Apr 2019 07:18:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 34AFE2075E for ; Tue, 30 Apr 2019 07:18:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=geanix.com header.i=@geanix.com header.b="XrR5isrI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726674AbfD3HSp (ORCPT ); Tue, 30 Apr 2019 03:18:45 -0400 Received: from first.geanix.com ([116.203.34.67]:43728 "EHLO first.geanix.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726607AbfD3HSh (ORCPT ); Tue, 30 Apr 2019 03:18:37 -0400 Received: from localhost (unknown [193.163.1.7]) by first.geanix.com (Postfix) with ESMTPSA id 93690308E9D; Tue, 30 Apr 2019 07:18:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=geanix.com; s=first; t=1556608710; bh=DAjULfeqzzhfRAwoGb6qT4ROYTcoiZ5UMEfG1sSyqwE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=XrR5isrIxnDNZT6BiKSVeGFIiLNNkraLx1S1jEjxtIsnSttINxL4DbM895/VaNTMO RWeCntKFPGSoH2ceWfb7vXq0DjFKKou4YzUKGs1Cv6jFlb94URnExlu8h/otCDJ+Va 3KEjR0aqg7g0mrTckcapDYV0n/e/ZmhkUCPaf4PjTi/ljmfCkwZBRtOImTIflleANq r3OsMJGwyy7tyOjFQMViLhOC0FGSnAUg2V83UJFuStzevzZwNvM4UNPlicC/7+3IHX LBhTr0DX1UKsQDlg2pLgutrTmet6e9q+CCp6NnT+c0CFuVaWkoL6RpR+Ffdol48MJ/ O3Ax46WjCS5pg== From: Esben Haabendal To: netdev@vger.kernel.org Cc: "David S. Miller" , Michal Simek , Yang Wei , Luis Chamberlain , YueHaibing , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 08/12] net: ll_temac: Fix iommu/swiotlb leak Date: Tue, 30 Apr 2019 09:17:55 +0200 Message-Id: <20190430071759.2481-9-esben@geanix.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190430071759.2481-1-esben@geanix.com> References: <20190429083422.4356-1-esben@geanix.com> <20190430071759.2481-1-esben@geanix.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Unmap the actual buffer length, not the amount of data received, avoiding resource exhaustion of swiotlb (seen on x86_64 platform). Signed-off-by: Esben Haabendal --- drivers/net/ethernet/xilinx/ll_temac_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/xilinx/ll_temac_main.c b/drivers/net/ethernet/xilinx/ll_temac_main.c index d3899e7..7e42746 100644 --- a/drivers/net/ethernet/xilinx/ll_temac_main.c +++ b/drivers/net/ethernet/xilinx/ll_temac_main.c @@ -820,7 +820,7 @@ static void ll_temac_recv(struct net_device *ndev) length = be32_to_cpu(cur_p->app4) & 0x3FFF; dma_unmap_single(ndev->dev.parent, be32_to_cpu(cur_p->phys), - length, DMA_FROM_DEVICE); + XTE_MAX_JUMBO_FRAME_SIZE, DMA_FROM_DEVICE); skb_put(skb, length); skb->protocol = eth_type_trans(skb, ndev); -- 2.4.11