Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161043AbaGRNOt (ORCPT ); Fri, 18 Jul 2014 09:14:49 -0400 Received: from bband-dyn38.178-41-141.t-com.sk ([178.41.141.38]:17770 "EHLO ip4-83-240-18-248.cust.nbox.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1161027AbaGRNOo (ORCPT ); Fri, 18 Jul 2014 09:14:44 -0400 From: Jiri Slaby To: stable@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Mateusz Guzik , linux-nfs@vger.kernel.org, Trond Myklebust , Jiri Slaby Subject: [PATCH 3.12 037/170] NFS: populate ->net in mount data when remounting Date: Fri, 18 Jul 2014 14:10:42 +0200 Message-Id: <708fc7633ef80d411ab112d2ec64dd5826c9863a.1405685481.git.jslaby@suse.cz> X-Mailer: git-send-email 2.0.0 In-Reply-To: <48e8cad86bb1241c08bdaa80db022c25068ff8e0.1405685481.git.jslaby@suse.cz> References: <48e8cad86bb1241c08bdaa80db022c25068ff8e0.1405685481.git.jslaby@suse.cz> In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Mateusz Guzik 3.12-stable review patch. If anyone has any objections, please let me know. =============== 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: Jiri Slaby --- fs/nfs/super.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/nfs/super.c b/fs/nfs/super.c index a03b9c6f9489..64940b5286db 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2197,6 +2197,7 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data) data->timeo = 10U * nfss->client->cl_timeout->to_initval / HZ; data->nfs_server.port = nfss->port; data->nfs_server.addrlen = nfss->nfs_client->cl_addrlen; + data->net = current->nsproxy->net_ns; memcpy(&data->nfs_server.address, &nfss->nfs_client->cl_addr, data->nfs_server.addrlen); -- 2.0.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/