From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932132AbcIIKOj (ORCPT ); Fri, 9 Sep 2016 06:14:39 -0400 Received: from szxga02-in.huawei.com ([119.145.14.65]:48278 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752224AbcIIKNb (ORCPT ); Fri, 9 Sep 2016 06:13:31 -0400 From: Salil Mehta To: CC: , , , , , , , , Subject: [PATCH for-next 03/20] IB/hns: Add the check for pointer ctrl Date: Fri, 9 Sep 2016 18:30:34 +0800 Message-ID: <1473417051-99560-4-git-send-email-salil.mehta@huawei.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1473417051-99560-1-git-send-email-salil.mehta@huawei.com> References: <1473417051-99560-1-git-send-email-salil.mehta@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.67.212.75] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020202.57D28B48.00EA,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2013-06-18 04:22:30, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 42395c7693833595df5f4100c3d95671 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Lijun Ou The pointer ctrl may be null, so we add check for it. Signed-off-by: Lijun Ou Reviewed-by: Wei Hu Signed-off-by: Salil Mehta --- drivers/infiniband/hw/hns/hns_roce_hw_v1.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c index 5f76fc1..ea47ec4 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c @@ -336,6 +336,12 @@ int hns_roce_v1_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr, } ctrl = get_recv_wqe(hr_qp, ind); + if (unlikely(!ctrl)) { + dev_err(dev, "Get recv wqe failed!\n"); + ret = -EINVAL; + *bad_wr = wr; + goto out; + } roce_set_field(ctrl->rwqe_byte_12, RQ_WQE_CTRL_RWQE_BYTE_12_RWQE_SGE_NUM_M, -- 1.7.9.5