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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable 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 49F36C47086 for ; Mon, 24 May 2021 16:09:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1BD1B6117A for ; Mon, 24 May 2021 16:09:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237896AbhEXQJW (ORCPT ); Mon, 24 May 2021 12:09:22 -0400 Received: from mail.kernel.org ([198.145.29.99]:45006 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235565AbhEXQBA (ORCPT ); Mon, 24 May 2021 12:01:00 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id B911461988; Mon, 24 May 2021 15:46:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1621871192; bh=QZ30t+MKU3DCIDBaL96ONqEHSTHbyu3sKGvIJPTmEHo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=s7gRtOPNtzl5hY3AjMLi3+0IOo/sJH5tiE2newCSw3FBb86tLfYd6BGCJ/SCirfTp HOtrexUpd7Xw70iQftt8EJaxc0U3B9pi9eL0XWbpYEqfM0UnCFMA0Hw6FWFKRPiTEM eVWlTPnIA4kIdu9+Aowf/+JMD8bVhRQrB/jomn34= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, "David S. Miller" , Tom Seewald Subject: [PATCH 5.12 116/127] qlcnic: Add null check after calling netdev_alloc_skb Date: Mon, 24 May 2021 17:27:13 +0200 Message-Id: <20210524152338.784750752@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210524152334.857620285@linuxfoundation.org> References: <20210524152334.857620285@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Tom Seewald commit 84460f01cba382553199bc1361f69a872d5abed4 upstream. The function qlcnic_dl_lb_test() currently calls netdev_alloc_skb() without checking afterwards that the allocation succeeded. Fix this by checking if the skb is NULL and returning an error in such a case. Breaking out of the loop if the skb is NULL is not correct as no error would be reported to the caller and no message would be printed for the user. Cc: David S. Miller Cc: stable Signed-off-by: Tom Seewald Link: https://lore.kernel.org/r/20210503115736.2104747-26-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c @@ -1047,6 +1047,8 @@ int qlcnic_do_lb_test(struct qlcnic_adap for (i = 0; i < QLCNIC_NUM_ILB_PKT; i++) { skb = netdev_alloc_skb(adapter->netdev, QLCNIC_ILB_PKT_SIZE); + if (!skb) + goto error; qlcnic_create_loopback_buff(skb->data, adapter->mac_addr); skb_put(skb, QLCNIC_ILB_PKT_SIZE); adapter->ahw->diag_cnt = 0; @@ -1070,6 +1072,7 @@ int qlcnic_do_lb_test(struct qlcnic_adap cnt++; } if (cnt != i) { +error: dev_err(&adapter->pdev->dev, "LB Test: failed, TX[%d], RX[%d]\n", i, cnt); if (mode != QLCNIC_ILB_MODE)