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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,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 787B7C433E0 for ; Wed, 30 Dec 2020 07:32:42 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (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 8320D21D1B for ; Wed, 30 Dec 2020 07:32:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8320D21D1B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4D5NKg28M1zDqGv for ; Wed, 30 Dec 2020 18:32:39 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=linux.alibaba.com (client-ip=47.88.44.36; helo=out4436.biz.mail.alibaba.com; envelope-from=abaci-bugfix@linux.alibaba.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com Received: from out4436.biz.mail.alibaba.com (out4436.biz.mail.alibaba.com [47.88.44.36]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4D5N7h6kTzzDqGS for ; Wed, 30 Dec 2020 18:23:53 +1100 (AEDT) X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R191e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=e01e04394; MF=abaci-bugfix@linux.alibaba.com; NM=1; PH=DS; RN=12; SR=0; TI=SMTPD_---0UKCfcPy_1609312996; Received: from j63c13417.sqa.eu95.tbsite.net(mailfrom:abaci-bugfix@linux.alibaba.com fp:SMTPD_---0UKCfcPy_1609312996) by smtp.aliyun-inc.com(127.0.0.1); Wed, 30 Dec 2020 15:23:25 +0800 From: YANG LI To: davem@davemloft.net Subject: [PATCH] ibmvnic: fix: NULL pointer dereference. Date: Wed, 30 Dec 2020 15:23:14 +0800 Message-Id: <1609312994-121032-1-git-send-email-abaci-bugfix@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 X-Mailman-Approved-At: Wed, 30 Dec 2020 18:30:52 +1100 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-kernel@vger.kernel.org, YANG LI , netdev@vger.kernel.org, ljp@linux.ibm.com, drt@linux.ibm.com, kuba@kernel.org, sukadev@linux.ibm.com, linuxppc-dev@lists.ozlabs.org, paulus@samba.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" The error is due to dereference a null pointer in function reset_one_sub_crq_queue(): if (!scrq) { netdev_dbg(adapter->netdev, "Invalid scrq reset. irq (%d) or msgs(%p).\n", scrq->irq, scrq->msgs); return -EINVAL; } If the expression is true, scrq must be a null pointer and cannot dereference. Signed-off-by: YANG LI Reported-by: Abaci --- drivers/net/ethernet/ibm/ibmvnic.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index f302504..d7472be 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -2981,9 +2981,7 @@ static int reset_one_sub_crq_queue(struct ibmvnic_adapter *adapter, int rc; if (!scrq) { - netdev_dbg(adapter->netdev, - "Invalid scrq reset. irq (%d) or msgs (%p).\n", - scrq->irq, scrq->msgs); + netdev_dbg(adapter->netdev, "Invalid scrq reset.\n"); return -EINVAL; } -- 1.8.3.1