==252789== Process terminating with default action of signal 11 (SIGSEGV): dumping core
    ==252789==  Access not within mapped region at address 0x28
    ==252789==    at 0x7D17D22: connect_reset_ready (mm-broadband-bearer-icera.c:419)
    ==252789==    by 0x4EEC242: g_simple_async_result_complete (gsimpleasyncresult.c:802)
    ==252789==    by 0x17EFC6: at_command_ready (mm-base-modem-at.c:538)
    ==252789==    by 0x4EEC242: g_simple_async_result_complete (gsimpleasyncresult.c:802)
    ==252789==    by 0x259423: serial_command_ready (mm-port-serial-at.c:393)
    ==252789==    by 0x4EEC242: g_simple_async_result_complete (gsimpleasyncresult.c:802)
    ==252789==    by 0x252B9B: command_context_complete_and_free (mm-port-serial.c:141)
    ==252789==    by 0x254542: port_serial_got_response (mm-port-serial.c:755)
    ==252789==    by 0x254A78: parse_response_buffer (mm-port-serial.c:926)
    ==252789==    by 0x254FFE: common_input_available (mm-port-serial.c:1035)
    ==252789==    by 0x2550DE: iochannel_input_available (mm-port-serial.c:1058)
    ==252789==    by 0x50D3F84: UnknownInlinedFun (gmain.c:3344)
    ==252789==    by 0x50D3F84: g_main_context_dispatch (gmain.c:4062)