R12B-05 beam.smp core

[Steve Vinoski]

I have a case of R12B-05 beam.smp dumping core on rare occasions on Linux
with the traceback below. I've seen it maybe 5 times in 2+ years and have
never been able to reproduce it when attempting to debug it. I'm posting it
here in the probably slim chance that someone recognizes it and probably
even slimmer chance that there's already a patch for it?

--steve

#0  0x10118414 in offset_heap_ptr ()
#1  0x1011888c in offset_one_rootset ()
#2  0x10118738 in offset_rootset ()
#3  0x10117454 in shrink_new_heap ()
#4  0x1011384c in minor_collection ()
#5  0x10111a2c in erts_garbage_collect ()
#6  0x101117d0 in erts_gc_after_bif_call ()
#7  0x1014e204 in process_main ()
#8  0x100a2138 in sched_thread_func ()
#9  0x101c75f0 in thr_wrapper ()
#10 0x0fe5481c in start_thread () from /lib/libpthread.so.0
#11 0x0fd8db6c in clone () from /lib/libc.so.6