[Mono-dev] GC segfault on ARM

[Tomi Valkeinen]

Hi,

> currently have a functional big endian ARM linux system that I have used
> to successfully build the ARM JIT.  However, upon attempting to run a
> CIL executable, mono immediately segfaults.  A backtrace indicates that
> the segfault occurs in the Boehm GC:
> 
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 16384 (LWP 32700)]
> GC_push_all_eager (bottom=0x0, top=0x1990a8 "") at mark.c:1468
> 1468            q = *p;
> (gdb) bt
> #0  GC_push_all_eager (bottom=0x0, top=0x1990a8 "") at mark.c:1468
> #1  0x000b9ef8 in pthread_push_all_stacks () at pthread_stop_world.c:266
> #2  0x000b9fac in GC_push_all_stacks () at pthread_stop_world.c:297
> #3  0x000b5848 in GC_push_roots (all=1, cold_gc_frame=0xbefffa4c "")
>    at mark_rts.c:643
> #4  0x000b4c60 in $a () at mark.c:326
> #5  0x000b4c60 in $a () at mark.c:326
> Previous frame identical to this frame (corrupt stack?)

I get quite similar backtrace when running the SVN version on our 
ARM11-based little-endian board:

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 16384 (LWP 395)]
0x001147b0 in GC_push_all_eager ()
(gdb) bt
#0  0x001147b0 in GC_push_all_eager ()
#1  0x00114844 in GC_push_all_stack ()
#2  0x0011e320 in pthread_push_all_stacks ()
#3  0x0011e3ec in GC_push_all_stacks ()
#4  0x00119164 in GC_default_push_other_roots ()
#5  0x001164b0 in GC_push_roots ()
#6  0x00112ab8 in $a ()

  Tomi Valkeinen