Comment 25 for bug 824147

Got it in gdb:
 backtrace full
#0 0x0000000000401d88 in main (argc=<optimized out>, argv=<optimized out>) at usb_modeswitch_dispatcher.c:339
        reg = {buffer = 0x0, allocated = 0, used = 0, syntax = 0, fastmap = 0x0, translate = 0x0, re_nsub = 0, can_be_null = 0, regs_allocated = 0, fastmap_accurate = 0,
          no_sub = 0, not_bol = 0, not_eol = 0, newline_anchor = 0}
        match = {{rm_so = 0, rm_eo = 0}, {rm_so = 0, rm_eo = 0}, {rm_so = 0, rm_eo = 0}}
        val = <optimized out>
        tmpval = <optimized out>
        tmp = <optimized out>
        bus_id = '\000' <repeats 4095 times>
        kernel_name = <optimized out>
        dev_top = "1-3", '\000' <repeats 4092 times>
        udev_args = <optimized out>
        msg = <optimized out>
        sys_dir = <optimized out>
        fname = <optimized out>
        selected_config = <optimized out>
        line = '\000' <repeats 88 times>"\372, .\336\367\377\177", '\000' <repeats 75 times>"\200, \001\000\000\000\000\000\004y\001\000\000\000\000\000\004y\001", '\000' <repeats 13 times>, "\005\000\000\000\000\000\000\000\000p!\000\000\000\000\000\000\220!\000\000\000\000\000\224\202!\000\000\000\000\000\070\304!\000\000\000\000\000\000p\001\000\000\000\000\000\003", '\000' <repeats 175 times>, "(\232\375\367\377\177\000\000/\000\000\000\000\000\000\000Mt\336\367\377\177\000\000\000\000\000\000\000\000\000\000\017\000\000\000\000\000\000\000&\000\000\000\000\000\000\000\001", '\000' <repeats 23 times>, "0\331\377\377\377\177\000\000\271p\336\367\377\177\000\000\001\000\000\000\000\000\000\000P\232\375\367\377\177\000\000\060\331\377\377\377\177\000\000H-\336\367\377\177", '\000' <repeats 26 times>, "4\274\336\367\377\177\000\000\000\000\000\000\000\000\000\000\373"...
        i = <optimized out>
        scsi_needed = 0
        no_data = <optimized out>
        counter = <optimized out>
        no_driver_loading = <optimized out>
        found_ok = <optimized out>
        p = <optimized out>
        sleep_500 = {tv_sec = 0, tv_nsec = 500000000}
        rc = <optimized out>
        path_glob = {gl_pathc = 0, gl_pathv = 0x0, gl_offs = 0, gl_flags = 0, gl_closedir = 0, gl_readdir = 0, gl_opendir = 0, gl_lstat = 0, gl_stat = 0}
        glob_status = <optimized out>
        dev_list = <optimized out>
        dev_list2 = <optimized out>
        len = <optimized out>