From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-1098017-1521804535-2-12981354145707040238 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.25, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='CN', FromHeader='org', MailFrom='org' X-Spam-charsets: plain='UTF-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1521804535; b=kjX24iIEEfysYIbXce0PK7s1lg/MrKSzCqo6LDd95t4czoj P/xzNgun+aIWGQXgTdq1xQ5tZhCVyietezi1D/9q1JMFDovHTK69WX/6Tm8eGu69 6ROtipfEacKJ0eZzVqogV+lR3J0tGf9SqoXpJyIll1o5Y5Sh6iKGl8zB1v3yMQR/ bQEbtW7WURTa9+b32UJ3ZgK05F1q8JUldVn3pMr0BuE8JqTJsp5tv5lhQspoGu9c XkhIZeUcjvqxsC0VfY/sDalV8mD10VVW9IxMD/QjQUcPcv8oxRtTu5YCrlrGdhIV QJEWrp2KzmDBapW7jf/hIB402PCVb6FaTwiHAAQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-type:sender :list-id; s=arctest; t=1521804535; bh=QMIrFCIUbhs1rM/81MIfD8lvXG 6ZV6amXUYDoGEEJ9g=; b=PgF2nQ9rjaJTlC4Hjw2XS4RjJMFoid5ETMgVem/RYr Lg896OPqujNhaIQS6y3iNfFp+i/etSUCUKUXIuXED43GyVtBBO7YTXnRm8EUxXmF j5CbsKzI64XzY82zCdPaBeWTWhfAVsGzwdHCYLJ8RjozBVVmm5bD7I4c8GCzXFQO ey641ImnU2P9lz/1rbBY1l2kijjqWdBZ2wakUyAjPCBkgfxDiiCQAhEGAW5PpuzV krVjKxtg5QWXEzFJfEZotolWi6o4sEbE3VwUI1snua9CSiKGdueGb5gH9mtRufLX xWUSwEEPKCDO/8KdV7H+pEpk8Ul8gC2pp0fagTF07vbQ== ARC-Authentication-Results: i=1; mx6.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 Authentication-Results: mx6.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 X-ME-VSCategory: clean Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755275AbeCWKGo (ORCPT ); Fri, 23 Mar 2018 06:06:44 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:40922 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754936AbeCWKGn (ORCPT ); Fri, 23 Mar 2018 06:06:43 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Maor Gottlieb , Leon Romanovsky , Doug Ledford , Sasha Levin Subject: [PATCH 4.9 048/177] IB/mlx4: Change vma from shared to private Date: Fri, 23 Mar 2018 10:52:56 +0100 Message-Id: <20180323094207.440173275@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180323094205.090519271@linuxfoundation.org> References: <20180323094205.090519271@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Maor Gottlieb [ Upstream commit ca37a664a8e4e9988b220988ceb4d79e3316f195 ] Anonymous VMA (->vm_ops == NULL) cannot be shared, otherwise it would lead to SIGBUS. Remove the shared flags from the vma after we change it to be anonymous. This is easily reproduced by doing modprobe -r while running a user-space application such as raw_ethernet_bw. Fixes: ae184ddeca5db ('IB/mlx4_ib: Disassociate support') Signed-off-by: Maor Gottlieb Signed-off-by: Leon Romanovsky Signed-off-by: Doug Ledford Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/infiniband/hw/mlx4/main.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/infiniband/hw/mlx4/main.c +++ b/drivers/infiniband/hw/mlx4/main.c @@ -1182,6 +1182,8 @@ static void mlx4_ib_disassociate_ucontex BUG_ON(1); } + context->hw_bar_info[i].vma->vm_flags &= + ~(VM_SHARED | VM_MAYSHARE); /* context going to be destroyed, should not access ops any more */ context->hw_bar_info[i].vma->vm_ops = NULL; }