From patchwork Mon Aug 22 23:15:58 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Saleem, Shiraz" X-Patchwork-Id: 9294615 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 7705B607FF for ; Mon, 22 Aug 2016 23:16:06 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6864B28AE2 for ; Mon, 22 Aug 2016 23:16:06 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5CFAD28AEA; Mon, 22 Aug 2016 23:16:06 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E48E828AE2 for ; Mon, 22 Aug 2016 23:16:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756139AbcHVXQD (ORCPT ); Mon, 22 Aug 2016 19:16:03 -0400 Received: from mga01.intel.com ([192.55.52.88]:5519 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756134AbcHVXQD (ORCPT ); Mon, 22 Aug 2016 19:16:03 -0400 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga101.fm.intel.com with ESMTP; 22 Aug 2016 16:16:02 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.28,562,1464678000"; d="scan'208";a="1039890419" Received: from unknown (HELO ssaleem-MOBL4.amr.corp.intel.com) ([10.255.79.245]) by orsmga002.jf.intel.com with ESMTP; 22 Aug 2016 16:16:02 -0700 From: Shiraz Saleem To: dledford@redhat.com Cc: linux-rdma@vger.kernel.org, e1000-rdma@lists.sourceforge.net, Mustafa Ismail , Shiraz Saleem Subject: [PATCH] i40iw: Protect req_resource_num update Date: Mon, 22 Aug 2016 18:15:58 -0500 Message-Id: <1471907758-80028-1-git-send-email-shiraz.saleem@intel.com> X-Mailer: git-send-email 2.8.0 Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Mustafa Ismail In i40iw_alloc_resource(), ensure that the update to req_resource_num is protected by the lock. Fixes: 8e06af711bf2 ("i40iw: add main, hdr, status") Reported-by: Stefan Assmann Signed-off-by: Mustafa Ismail Signed-off-by: Shiraz Saleem --- drivers/infiniband/hw/i40iw/i40iw.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/i40iw/i40iw.h b/drivers/infiniband/hw/i40iw/i40iw.h index 882f3ef..8ec09e4 100644 --- a/drivers/infiniband/hw/i40iw/i40iw.h +++ b/drivers/infiniband/hw/i40iw/i40iw.h @@ -435,8 +435,8 @@ static inline int i40iw_alloc_resource(struct i40iw_device *iwdev, *next = resource_num + 1; if (*next == max_resources) *next = 0; - spin_unlock_irqrestore(&iwdev->resource_lock, flags); *req_resource_num = resource_num; + spin_unlock_irqrestore(&iwdev->resource_lock, flags); return 0; }