From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934453AbaKSVdD (ORCPT ); Wed, 19 Nov 2014 16:33:03 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:57776 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934434AbaKSVc6 (ORCPT ); Wed, 19 Nov 2014 16:32:58 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Devesh Sharma , Roland Dreier Subject: [PATCH 3.17 119/141] IB/core: Clear AH attr variable to prevent garbage data Date: Wed, 19 Nov 2014 12:52:22 -0800 Message-Id: <20141119205154.584731774@linuxfoundation.org> X-Mailer: git-send-email 2.1.3 In-Reply-To: <20141119205150.700188369@linuxfoundation.org> References: <20141119205150.700188369@linuxfoundation.org> User-Agent: quilt/0.63-1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.17-stable review patch. If anyone has any objections, please let me know. ------------------ From: Devesh Sharma commit 8b0f93d9490653a7b9fc91f3570089132faed1c0 upstream. During create-ah from userspace, uverbs is sending garbage data in attr.dmac and attr.vlan_id. This patch sets attr.dmac and attr.vlan_id to zero. Fixes: dd5f03beb4f7 ("IB/core: Ethernet L2 attributes in verbs/cm structures") Signed-off-by: Devesh Sharma Signed-off-by: Roland Dreier Signed-off-by: Greg Kroah-Hartman --- drivers/infiniband/core/uverbs_cmd.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -2518,6 +2518,8 @@ ssize_t ib_uverbs_create_ah(struct ib_uv attr.grh.sgid_index = cmd.attr.grh.sgid_index; attr.grh.hop_limit = cmd.attr.grh.hop_limit; attr.grh.traffic_class = cmd.attr.grh.traffic_class; + attr.vlan_id = 0; + memset(&attr.dmac, 0, sizeof(attr.dmac)); memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16); ah = ib_create_ah(pd, &attr);