From patchwork Fri Jul 4 22:14:38 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 4485771 Return-Path: X-Original-To: patchwork-linux-nfs@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id F1D4DBEEAA for ; Fri, 4 Jul 2014 23:01:18 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 463A9200DB for ; Fri, 4 Jul 2014 23:01:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5490E201FE for ; Fri, 4 Jul 2014 23:01:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031184AbaGDXA5 (ORCPT ); Fri, 4 Jul 2014 19:00:57 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:57089 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760559AbaGDWQd (ORCPT ); Fri, 4 Jul 2014 18:16:33 -0400 Received: from localhost (c-76-28-255-20.hsd1.wa.comcast.net [76.28.255.20]) by mail.linuxfoundation.org (Postfix) with ESMTPSA id 5E78B979; Fri, 4 Jul 2014 22:16:31 +0000 (UTC) From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Mateusz Guzik , linux-nfs@vger.kernel.org, Trond Myklebust Subject: [PATCH 3.15 39/66] NFS: populate ->net in mount data when remounting Date: Fri, 4 Jul 2014 15:14:38 -0700 Message-Id: <20140704221424.589638402@linuxfoundation.org> X-Mailer: git-send-email 2.0.1 In-Reply-To: <20140704221422.813435485@linuxfoundation.org> References: <20140704221422.813435485@linuxfoundation.org> User-Agent: quilt/0.63-1 MIME-Version: 1.0 Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 3.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Mateusz Guzik commit a914722f333b3359d2f4f12919380a334176bb89 upstream. Otherwise the kernel oopses when remounting with IPv6 server because net is dereferenced in dev_get_by_name. Use net ns of current thread so that dev_get_by_name does not operate on foreign ns. Changing the address is prohibited anyway so this should not affect anything. Signed-off-by: Mateusz Guzik Cc: linux-nfs@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Trond Myklebust Signed-off-by: Greg Kroah-Hartman --- fs/nfs/super.c | 1 + 1 file changed, 1 insertion(+) -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2248,6 +2248,7 @@ nfs_remount(struct super_block *sb, int data->nfs_server.addrlen = nfss->nfs_client->cl_addrlen; data->version = nfsvers; data->minorversion = nfss->nfs_client->cl_minorversion; + data->net = current->nsproxy->net_ns; memcpy(&data->nfs_server.address, &nfss->nfs_client->cl_addr, data->nfs_server.addrlen);