[issue18786] test_multiprocessing_spawn crashes under PowerLinux

[Antoine Pitrou]

New submission from Antoine Pitrou:

http://buildbot.python.org/all/builders/PPC64%20PowerLinux%203.x

[319/379] test_multiprocessing_spawn
/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/multiprocessing/semaphore_tracker.py:121: UserWarning: semaphore_tracker: There appear to be 2 leaked semaphores to clean up at shutdown
  len(cache))
/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/multiprocessing/semaphore_tracker.py:133: UserWarning: semaphore_tracker: '/mp-t89tlie_': [Errno 2] No such file or directory
  warnings.warn('semaphore_tracker: %r: %s' % (name, e))
make: *** [buildbottest] User defined signal 1
Process PoolWorker-777:
Traceback (most recent call last):
  File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/multiprocessing/pool.py", line 123, in worker
    put((job, i, result))
  File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/multiprocessing/queues.py", line 368, in put
    self._writer.send_bytes(obj)
  File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/multiprocessing/connection.py", line 202, in send_bytes
    self._send_bytes(m[offset:offset + size])
  File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/multiprocessing/connection.py", line 401, in _send_bytes
    self._send(struct.pack("!i", n))
  File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/multiprocessing/connection.py", line 371, in _send
    n = write(self._handle, buf)
BrokenPipeError: [Errno 32] Broken pipe

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/multiprocessing/process.py", line 255, in _bootstrap
    self.run()
  File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/multiprocessing/process.py", line 92, in run
    self._target(*self._args, **self._kwargs)
  File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/multiprocessing/pool.py", line 128, in worker
    put((job, i, (False, wrapped)))
  File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/multiprocessing/queues.py", line 368, in put
    self._writer.send_bytes(obj)
  File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/multiprocessing/connection.py", line 202, in send_bytes
    self._send_bytes(m[offset:offset + size])
  File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/multiprocessing/connection.py", line 401, in _send_bytes
    self._send(struct.pack("!i", n))
  File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/multiprocessing/connection.py", line 371, in _send
    n = write(self._handle, buf)
BrokenPipeError: [Errno 32] Broken pipe
/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/multiprocessing/semaphore_tracker.py:121: UserWarning: semaphore_tracker: There appear to be 4 leaked semaphores to clean up at shutdown
  len(cache))
program finished with exit code 2
elapsedTime=4624.019498

----------
assignee: sbt
components: Library (Lib), Tests
messages: 195673
nosy: David.Edelsohn, pitrou, sbt
priority: critical
severity: normal
status: open
title: test_multiprocessing_spawn crashes under PowerLinux
type: crash
versions: Python 3.4

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18786>
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