[GHC] #11181: Program hangs forever in sched_yield() / yield() unless -N is limited

[GHC]

#11181: Program hangs forever in sched_yield() / yield() unless -N is limited
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        Reporter:  patrick_thomson  |                Owner:
            Type:  bug              |               Status:  new
        Priority:  normal           |            Milestone:
       Component:  Runtime System   |              Version:  7.10.2
      Resolution:                   |             Keywords:
Operating System:  Solaris          |         Architecture:  x86_64 (amd64)
 Type of failure:  Runtime crash    |            Test Case:
      Blocked By:                   |             Blocking:
 Related Tickets:                   |  Differential Rev(s):
       Wiki Page:                   |
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Comment (by patrick_thomson):

 @thomie gdb says it's stuck in ioctl/epoll:
 https://gist.github.com/patrickt/7b358c533d832a8625aa

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11181#comment:5>
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