Crash in TFTP server code serving UEFI boot loader

[Mark Shuttleworth]

I see this traceback in clusterd.log:

2015-06-13 19:10:34+0100 [TFTP (UDP)] Datagram received from ('192.168.9.105', 1664): <RRQDatagram(filename=bootx64.efi, mode=octet, options={'tsize': '0', 'blksize': '1468'})>
2015-06-13 19:10:34+0100 [-] RemoteOriginReadSession starting on 57414
2015-06-13 19:10:34+0100 [-] Starting protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7f62a0649f80>
2015-06-13 19:10:34+0100 [RemoteOriginReadSession (UDP)] (UDP Port 57414 Closed)
2015-06-13 19:10:34+0100 [RemoteOriginReadSession (UDP)] Stopping protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7f62a0649f80>
2015-06-13 19:10:35+0100 [-] Unhandled Error
 Traceback (most recent call last):
   File "/usr/lib/python2.7/dist-packages/twisted/application/app.py", line 392, in startReactor
     self.config, oldstdout, oldstderr, self.profiler, reactor)
   File "/usr/lib/python2.7/dist-packages/twisted/application/app.py", line 313, in runReactorWithLogging
     reactor.run()
   File "/usr/lib/python2.7/dist-packages/twisted/internet/base.py", line 1192, in run
     self.mainLoop()
   File "/usr/lib/python2.7/dist-packages/twisted/internet/base.py", line 1201, in mainLoop
     self.runUntilCurrent()
 --- <exception caught here> ---
   File "/usr/lib/python2.7/dist-packages/twisted/internet/base.py", line 824, in runUntilCurrent
     call.func(*call.args, **call.kw)
   File "/usr/lib/python2.7/dist-packages/tftp/util.py", line 80, in _call_and_schedule
     self.callable(*self.callable_args, **self.callable_kwargs)
   File "/usr/lib/python2.7/dist-packages/twisted/internet/udp.py", line 254, in write
     return self.socket.send(datagram)
 exceptions.AttributeError: 'Port' object has no attribute 'socket'

This is trying to boot a NUC (AMT, UEFI).

Mark

[Raphaël Badin (rvb)]

See bug 1464984 for an explanation about the circumstances of the crash.