From patchwork Wed Feb 24 15:18:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= X-Patchwork-Id: 387595 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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, 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 5C532C43381 for ; Wed, 24 Feb 2021 15:30:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 234BF64E83 for ; Wed, 24 Feb 2021 15:30:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235538AbhBXP2Y (ORCPT ); Wed, 24 Feb 2021 10:28:24 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38170 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238536AbhBXPTh (ORCPT ); Wed, 24 Feb 2021 10:19:37 -0500 Received: from mail-lj1-x229.google.com (mail-lj1-x229.google.com [IPv6:2a00:1450:4864:20::229]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 31504C061786 for ; Wed, 24 Feb 2021 07:18:57 -0800 (PST) Received: by mail-lj1-x229.google.com with SMTP id v17so2787121ljj.9 for ; Wed, 24 Feb 2021 07:18:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=mZF1HWnrlItLv8PoJfvSCiIXd5pLgphu/THNbaXDQx0=; b=hVGBI3eNeTIDqW1xSsyugVoE1JHyluni5iY3/tzGm7h6a3AiRhmezg2pNFrdYkB6Wm 2pObFb9UDQ4zdewQ6+Fw4m6kwsAZFC9B9doZMqbzfomo/UhtMiSiB/RwkXZEYkxGHkz5 rvfLq9C7aSDXfhE09N0gqff7DVdY3n2RPJnY7GGmQ6yt5BsUsmmK/Jy2Euf86CTcYukK ZbjS5KBtrenShTm7N1qDOTPEZfz7g5LLibROH3vcAOwAxWif7kSS0/2kUtDH1DLaqfx7 uUfxuLAQU/Z1sb2OpgNgsG17WuqE36cXheCgXlEX38JdA56u7G6RscDttcLeCFbz8KcK /yWw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=mZF1HWnrlItLv8PoJfvSCiIXd5pLgphu/THNbaXDQx0=; b=pt7+65JYl4/ly7J+gNEFtEkF/hZ/tpLm96eU1MmcX2SxRRrOuA8nvTQZXrxR57BQrH yhWpTHxpGhLmeiy5QdDGgeCLSITUJ/VOJxOodIDBcLgsu8x5XlUk3l5jEeGmZo71oxrY FBNomJ6fe16T3uT3u5UM4MAWIl63/3CpLZldmrmdxCqFuwkE67Kk2igKS+iw+eZe+Lx5 23VH4QXTAA/agAuoXnmZqgOAWhgmrnyeuDcDvhbcydTSx+JG9ruWw9qgTlXYm6jN78Me zxg8lGEyi4G4mSsva3U5JvRZshyHFvTB/qtFXso5t12sE8QPboEueT7VfhpBf7yumcK4 PJtA== X-Gm-Message-State: AOAM532oJXBfCA4WG0hK+TjEJXXDNZk+ykmRrT92JZixaZ6zHCuIwXa4 cWzuZbIl0rx2AzgmeMo/Ie4= X-Google-Smtp-Source: ABdhPJxuKYwLcuJPWi3Wo537E5UTnlgyAUokJmgYiKzFmBWAXnl0QBwa3vDhkZ+B5QDkvmPeI8Wi9g== X-Received: by 2002:a2e:9c10:: with SMTP id s16mr4927578lji.457.1614179935731; Wed, 24 Feb 2021 07:18:55 -0800 (PST) Received: from localhost.lan (ip-194-187-74-233.konfederacka.maverick.com.pl. [194.187.74.233]) by smtp.gmail.com with ESMTPSA id j137sm546006lfj.55.2021.02.24.07.18.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 24 Feb 2021 07:18:54 -0800 (PST) From: =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= To: "David S . Miller" , Jakub Kicinski Cc: netdev@vger.kernel.org, Florian Fainelli , bcm-kernel-feedback-list@broadcom.com, =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= Subject: [PATCH net] net: broadcom: bcm4908_enet: fix RX path possible mem leak Date: Wed, 24 Feb 2021 16:18:41 +0100 Message-Id: <20210224151842.2419-1-zajec5@gmail.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Rafał Miłecki After filling RX ring slot with new skb it's required to free old skb. Immediately on error or later in the net subsystem. Signed-off-by: Rafał Miłecki --- drivers/net/ethernet/broadcom/bcm4908_enet.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/broadcom/bcm4908_enet.c b/drivers/net/ethernet/broadcom/bcm4908_enet.c index 9be33dc98072..7983c7a9fca9 100644 --- a/drivers/net/ethernet/broadcom/bcm4908_enet.c +++ b/drivers/net/ethernet/broadcom/bcm4908_enet.c @@ -570,6 +570,7 @@ static int bcm4908_enet_poll(struct napi_struct *napi, int weight) if (len < ETH_ZLEN || (ctl & (DMA_CTL_STATUS_SOP | DMA_CTL_STATUS_EOP)) != (DMA_CTL_STATUS_SOP | DMA_CTL_STATUS_EOP)) { + kfree_skb(slot.skb); enet->netdev->stats.rx_dropped++; break; }