[GHC] #14538: forkprocess01 fails occassionally on with multiple ACQUIRE_LOCK panic

[GHC]

#14538: forkprocess01 fails occassionally on with multiple ACQUIRE_LOCK panic
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           Reporter:  bgamari           |             Owner:  (none)
               Type:  bug               |            Status:  new
           Priority:  normal            |         Milestone:
          Component:  Runtime System    |           Version:  8.2.1
           Keywords:                    |  Operating System:  MacOS X
       Architecture:  Unknown/Multiple  |   Type of failure:  None/Unknown
          Test Case:                    |        Blocked By:
           Blocking:                    |   Related Tickets:
Differential Rev(s):                    |         Wiki Page:
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 I noticed that `forkprocess01` failed to build on Darwin and commit
 eb86e867694bceedfb47a527d71429197ffe6dda with
 {{{
 Stderr ( forkprocess01 ):
 forkprocess01: internal error: multiple ACQUIRE_LOCK: rts/Task.c 228
     (GHC version 8.3.20171128 for x86_64_apple_darwin)
     Please report this as a GHC bug:
 http://www.haskell.org/ghc/reportabug
 /bin/sh: line 1:  5124 Abort trap: 6           ./forkprocess01 +RTS -ls
 -RTS
 *** unexpected failure for forkprocess01(threaded1_ls)
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14538>
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