| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.14 35/59] NFS: populate ->net in mount data when remounting | Date | Fri, 4 Jul 2014 15:19:24 -0700 |
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3.14-stable review patch. If anyone has any objections, please let me know.
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From: Mateusz Guzik <mguzik@redhat.com>
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 <mguzik@redhat.com> Cc: linux-nfs@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- fs/nfs/super.c | 1 + 1 file changed, 1 insertion(+)
--- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2246,6 +2246,7 @@ 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);
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