[GHC] #3295: Null deref by threaded runtime scheduler

[GHC]

#3295: Null deref by threaded runtime scheduler
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    Reporter:  A1kmm                                     |        Owner:  simonmar
        Type:  bug                                       |       Status:  new     
    Priority:  high                                      |    Milestone:  6.12.1  
   Component:  Runtime System                            |      Version:  6.11    
    Severity:  major                                     |   Resolution:          
    Keywords:  crash, nullderef, threaded, parallel, GC  |   Difficulty:  Unknown 
    Testcase:                                            |           Os:  Linux   
Architecture:  ia64                                      |  
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Comment (by simonmar):

 Did you manage to find a small reproducible test case?  Is the bug still
 reproducible with the current HEAD?

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3295#comment:2>
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