[GHC] #5214: SIGSEGV in yieldCapability ()

[GHC]

#5214: SIGSEGV  in yieldCapability ()
-------------------------------+--------------------------------------------
    Reporter:  j.waldmann      |       Owner:                
        Type:  bug             |      Status:  new           
    Priority:  normal          |   Component:  Runtime System
     Version:  7.0.3           |    Keywords:                
    Testcase:                  |   Blockedby:                
          Os:  Linux           |    Blocking:                
Architecture:  x86_64 (amd64)  |     Failure:  Runtime crash 
-------------------------------+--------------------------------------------
 the following happens in a program compiled with ghc-7.0.3
 (and also, with ghc-6.12.3), running with +RTS -N
 on i7-920, ubuntu 11 (kernel 2.6.38-8)

 {{{
 Program received signal SIGSEGV, Segmentation fault.
 0x00000000006071de in yieldCapability ()
 (gdb) where
 #0  0x00000000006071de in yieldCapability ()
 #1  0x000000000060bc6b in schedule ()
 #2  0x0000000000609294 in real_main ()
 #3  0x000000000060938d in hs_main ()
 #4  0x00007ffff6b07eff in __libc_start_main ()
    from /lib/x86_64-linux-gnu/libc.so.6
 #5  0x000000000040a589 in _start ()
 }}}

 cf. http://thread.gmane.org/gmane.comp.lang.haskell.cafe/89244

 My program uses STM and FFI.
 I am working on boiling down a test case.
 I open this ticket to perhaps get some directions.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5214>
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