From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-977995-1521800113-2-17999860463168980304 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=1521800112; b=SQf2tWWwd1lvSM6fJ0DpIJ9B/fvVESq2cKUx4cTe8uLOEro o3+/aeeTpeCBhj+ZCPJqV7F9v3KW7CDwoefeL3MAP+1kjraA/ANzlAGa2qRQxO3u unSw4ARxPG/qiZgRdfxQY3W9VhzeMCsVsMWlnmXeqGbPdKCzFsNPgSkfT/1ElQ+O Krki0Nfe/2nsu9Mta7gK11oJNfkyesSH/eSS3fX3gLc8Cxh6SHSpSj0ITXkab3Sp g7G/QWvSP07P+SlolsR8USp6vR2LE6xeklBX8trrxQNsX6dNPpKyQBnnlPvsU0EQ goufA1mzd1YVmfAzWwy0if7F+Wz4wRT02MsJqTw== 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=1521800112; bh=MCdq3R031MJof8VkxQnKEtXyOx 2sgmhFWPubTkz/vCw=; b=moGRQFDXFqOcrT+XpWSahfxPr16oqH2CzJ7SSThD08 iTDCahurvrmz78/BxNU0cZg1pLixoKQbM6H8RK2HyIQ0IgpqBTcaK6sGbEeIP6jE F2uBQpibJ9M/KhiaijI7K1jHYLZD0ZiDm9HNFvLsQOcNDWEdAtfwpdLafNMosQhL BaIwuYv10LfOb3kZ22H84huKZQ8BNoGvuPt41U/7RSv24omvk60CqMbnPACShujk cyKlQEVecxYQKoBwS04QGnnhCcwHFUKY8rHplu4HfoZKuDpNIIqv8uqlBwuW3KOF sGRA6bEIC1nckQhtAhaITnPcFH8q3/EGA9M0EqmaeE2Q== ARC-Authentication-Results: i=1; mx3.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: mx3.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 S933401AbeCWKPG (ORCPT ); Fri, 23 Mar 2018 06:15:06 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:45472 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933400AbeCWKPD (ORCPT ); Fri, 23 Mar 2018 06:15:03 -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 4.4 35/97] IB/mlx4: Change vma from shared to private Date: Fri, 23 Mar 2018 10:54:22 +0100 Message-Id: <20180323094159.639962651@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180323094157.535925724@linuxfoundation.org> References: <20180323094157.535925724@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: 4.4-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 @@ -1055,6 +1055,8 @@ 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; }