gdb：地址范围映射

   Program received signal SIGABRT, Aborted.
    0xb7fff424 in __kernel_vsyscall ()
    (gdb) where
    #0  0xb7fff424 in __kernel_vsyscall ()
    #1  0x0050cd71 in raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
    #2  0x0050e64a in abort () at abort.c:92
    #3  0x08083b3b in ?? ()
    #4  0x08095461 in ?? ()
    #5  0x0808bdea in ?? ()
    #6  0x0808c4e2 in ?? ()
    #7  0x080b683b in ?? ()
    #8  0x0805d845 in ?? ()
    #9  0x08083eb6 in ?? ()
    #10 0x08061402 in ?? ()
    #11 0x004f8cc6 in __libc_start_main (main=0x805f390, argc=15, ubp_av=0xbfffef64, init=0x825e220, fini=0x825e210, 
        rtld_fini=0x4cb220 <_dl_fini>, stack_end=0xbfffef5c) at libc-start.c:226
    #12 0x0804e5d1 in ?? ()

#10 0x08061402 in ?? ()