[GHC] #9722: ghcirun004 intermittently fails with ghc: ioManagerWakeup: write: Bad file descriptor

[GHC]

#9722: ghcirun004 intermittently fails with ghc: ioManagerWakeup: write: Bad file
descriptor
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              Reporter:  ezyang      |            Owner:
                  Type:  bug         |           Status:  new
              Priority:  highest     |        Milestone:  7.10.1
             Component:  GHCi        |          Version:  7.9
            Resolution:              |         Keywords:
      Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple                   |       Difficulty:  Unknown
       Type of failure:  Runtime     |       Blocked By:
  crash                              |  Related Tickets:
             Test Case:  ghcirun004  |
              Blocking:              |
Differential Revisions:              |
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Comment (by AndreasVoellmy):

 I haven't been able to recreate this on HEAD
 (a2e7bbfe7656cf7dbf1af4da5c077ac0b5d41127) on Ubuntu 14.04.1 LTS. Is there
 a test that fails most of the time? If so, how do you run it to get it to
 fail frequently? Or are these test failures occurring only rarely?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9722#comment:5>
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