SIGSEGV in yieldCapability ()

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.

Trac metadata

Trac field	Value
Version	7.0.3
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Runtime System
Test case
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