Program received signal SIGSEGV, Segmentation fault.
0x00002b3dd5c85461 in machine_print_callstack_limited (m=0x604860, maxlev=-1)
    at machine.c:55
55        FASTCTX(context)->ip = m->c->ip;
The program being debugged was signaled while in a function called from GDB.
GDB remains in the frame where the signal was received.
To change this behavior use "set unwindonsignal on"
Evaluation of the expression containing the function (machine_print_callstack) will be abandoned.