diff mbox

[3.15,39/66] NFS: populate ->net in mount data when remounting

Message ID 20140704221424.589638402@linuxfoundation.org (mailing list archive)
State New, archived
Headers show

Commit Message

Greg KH July 4, 2014, 10:14 p.m. UTC 
3.15-stable review patch.  If anyone has any objections, please let me know.

------------------

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(+)



--
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
diff mbox

Patch

--- 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);