Mine

Breakpoint 1, 0xb71ffaf6 in exit () from /lib/libc.so.6
(gdb) where
#0  0xb71ffaf6 in exit () from /lib/libc.so.6
#1  0xb0a1a5d3 in mono_thread_abort (obj=0x1aafc0) at mini.c:8934
#2  0xb0a68cbe in mono_handle_exception_internal (ctx=0xaf6a3094, obj=0x1aafc0, original_ip=0xb0ab1af2, test_only=0, 
    out_filter_idx=0x0) at mini-exceptions.c:836
#3  0xb0a84ebc in throw_exception (eax=633112, ecx=1748928, edx=1748928, ebx=2965299188, esi=1748928, edi=633072, 
    ebp=2942972176, exc=0x1aafc0, eip=2964003570, esp=2942972148, rethrow=-1330963726) at exceptions-x86.c:396
#4  0xb01c7755 in ?? ()
#5  0x0009a918 in ?? ()
#6  0x001aafc0 in ?? ()
#7  0x001aafc0 in ?? ()
#8  0xb0bedff4 in ?? () from /opt/mono/lib/libmono.so.0
#9  0x001aafc0 in ?? ()
#10 0x0009a8f0 in ?? ()
#11 0xaf6a3110 in ?? ()
#12 0x001aafc0 in ?? ()
#13 0xb0ab1af2 in mono_raise_exception (ex=0x1aafc0) at object.c:4248
#14 0xb0af42c5 in mono_thread_interruption_checkpoint_request (bypass_abort_protection=0) at threads.c:3233
#15 0xaf6cad86 in ?? ()
#16 0xaf6a3164 in ?? ()
#17 0x09e882ac in ?? ()
#18 0xaf6a315c in ?? ()
#19 0xaf6cad79 in ?? ()
#20 0x00000000 in ?? ()
(gdb) mono_backtrace 20
#0  0xb71ffaf6 in exit () from /lib/libc.so.6
#1  0xb0a1a5d3 in mono_thread_abort (obj=0x1aafc0) at mini.c:8934
8934                    exit (mono_environment_exitcode_get ());
#2  0xb0a68cbe in mono_handle_exception_internal (ctx=0xaf6a3094, obj=0x1aafc0, original_ip=0xb0ab1af2, test_only=0, 
    out_filter_idx=0x0) at mini-exceptions.c:836
836                                             jit_tls->abort_func (obj);
#3  0xb0a84ebc in throw_exception (eax=633112, ecx=1748928, edx=1748928, ebx=2965299188, esi=1748928, edi=633072, 
    ebp=2942972176, exc=0x1aafc0, eip=2964003570, esp=2942972148, rethrow=-1330963726) at exceptions-x86.c:396
396             mono_handle_exception (&ctx, exc, (gpointer)eip, FALSE);
#4  0xb01c7755 in ?? ()
#5  0x0009a918 in ?? ()
[Thread -1338356848 (zombie) exited]
#6  0x001aafc0 in ?? ()

** (Gecko:7857): WARNING **: Aborting of threads in domain moonlight-162066856 timed out.
Moonlight.Loader::UnloadDomain (162066856): Unable to unload domain: Aborting of threads in domain moonlight-162066856 timed out..
#7  0x001aafc0 in ?? ()
#8  0xb0bedff4 in ?? () from /opt/mono/lib/libmono.so.0
#9  0x001aafc0 in ?? ()
#10 0x0009a8f0 in ?? ()
#11 0xaf6a3110 in ?? ()
#12 0x001aafc0 in ?? ()
#13 0xb0ab1af2 in mono_raise_exception (ex=0x1aafc0) at object.c:4248
4248            ex_handler (ex);
#14 0xb0af42c5 in mono_thread_interruption_checkpoint_request (bypass_abort_protection=0) at threads.c:3233
3233                    if (exc) mono_raise_exception (exc);
#15 af6cad86 in  (wrapper managed-to-native) System.Object:__icall_wrapper_mono_thread_interruption_checkpoint () + 0x1e (0xaf6cad68 0xaf6cad90) [0x218c0 - moonlight-162066856]
#16 0xaf6a3164 in ?? ()
#17 0x09e882ac in ?? ()
#18 0xaf6a315c in ?? ()
#19 af6cad79 in  (wrapper managed-to-native) System.Object:__icall_wrapper_mono_thread_interruption_checkpoint () + 0x11 (0xaf6cad68 0xaf6cad90) [0x218c0 - moonlight-162066856]
(gdb)