pa右上角出现crash过，什么意思？

xiaoliucool

点进去，有以下内容
Segmentation Fault!
Image built at 20150529.131135, release=0, osver=9.2
_last_cmdid = 2051
info.si_signo = 11
info.si_errno = 0
info.si_code  = 1
info.si_addr  = 0x1428020
gs  = 0x0000001b
es  = 0xbfbf003b
ds  = 0xbfbf003b
edi = 0x2a2c7ac8
esi = 0x0853d714
ebp = 0xbfbfdaac
isp = 0xd97edd34
ebx = 0x00000000
edx = 0x0050a008
ecx = 0x0a140105
eax = 0x00000020
trapno = 0x0000000c
err = 0x00000004
eip = 0x08104755
cs  = 0x00000033
eflags = 0x00013202
esp = 0xbfbfda54
ss  = 0x0000003b
Stack trace:
*0x08104758: 0x70702f66 0x64656f70
*0x081013bc: 0xbfbfdbd0 0x00000081
*0x080482fc: 0xbfbfdbd0 0x2838e000
*0x08049458: 0x081a4d24 0x00000002
End of stack trace

求解释