Return-Path: linux-nfs-owner@vger.kernel.org Received: from mx1.redhat.com ([209.132.183.28]:21042 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750822AbaFJKoS (ORCPT ); Tue, 10 Jun 2014 06:44:18 -0400 From: Mateusz Guzik To: Trond Myklebust Cc: linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org.#.3.4+ Subject: [PATCH] NFS: populate ->net in mount data when remounting Date: Tue, 10 Jun 2014 12:44:12 +0200 Message-Id: <1402397052-13970-1-git-send-email-mguzik@redhat.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: 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 Cc: stable@vger.kernel.org # 3.4+ --- fs/nfs/super.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 2cb5694..104ef01 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2248,6 +2248,7 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data) 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); -- 1.8.3.1