Debugging

(gdb) run `python -c 'print "A"*128'`
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /Users/****/test2 `python -c 'print "A"*128'`
buffer: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

Program received signal SIGSEGV, Segmentation fault.
0x0000000100000f5f in main ()
(gdb) info registers
rax            0x0	0
rbx            0x0	0
rcx            0x0	0
rdx            0x7fff7857f618	140735212418584
rsi            0x10000000100	1099511628032
rdi            0x103	259
rbp            0x4141414141414141	0x4141414141414141
rsp            0x7fff5fbffb68	0x7fff5fbffb68
r8             0x40	64
r9             0x7fff5fbff900	140734799804672
r10            0x100000f0a	4294971146
r11            0x246	582
r12            0x0	0
r13            0x0	0
r14            0x0	0
r15            0x0	0
rip            0x100000f5f	0x100000f5f <main+79>
eflags         0x10206	[ PF IF RF ]
cs             0x2b	43
ss             *value not available*
ds             *value not available*
es             *value not available*
fs             0x0	0
gs             0x0	0
(gdb) bt
#0  0x0000000100000f5f in main ()
(gdb) return
Make selected stack frame return now? (y or n) y
warning: Mach error at "i386-darwin-nat.c:190" in function "void i386_darwin_store_inferior_registers(struct target_ops *, struct regcache *, int)": (os/kern) invalid argument (0x4)
#0  0x4141414141414141 in ?? ()
(gdb) bt
#0  0x4141414141414141 in ?? ()
#1  0x4141414141414141 in ?? ()
#2  0x4141414141414141 in ?? ()
#3  0x4141414141414141 in ?? ()
#4  0x4141414141414141 in ?? ()
#5  0x0000000000000000 in ?? ()
(gdb) info registers
rax            0x0	0
rbx            0x0	0
rcx            0x0	0
rdx            0x7fff7857f618	140735212418584
rsi            0x10000000100	1099511628032
rdi            0x103	259
rbp            0x4141414141414141	0x4141414141414141
rsp            0x7fff5fbffb70	0x7fff5fbffb70
r8             0x40	64
r9             0x7fff5fbff900	140734799804672
r10            0x100000f0a	4294971146
r11            0x246	582
r12            0x0	0
r13            0x0	0
r14            0x0	0
r15            0x0	0
rip            0x4141414141414141	0x4141414141414141
eflags         0x10206	[ PF IF RF ]
cs             0x2b	43
ss             *value not available*
ds             *value not available*
es             *value not available*
fs             0x0	0
gs             0x0	0
(gdb)