有时，运行AsyncTask时会出现分段错误错误：
Fatal signal 11 (SIGSEGV) at 0x006e006f (code=1), thread 1864
完整筹码：
Fatal signal 11 (SIGSEGV) at 0x00680063 (code=1), thread 2323 (Thread-155)
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
Build fingerprint: 'generic/sdk/generic:4.4.2/KK/938007:eng/test-keys'
Revision: '0'
pid: 2308, tid: 2323, name: Thread-155 >>> xxxxxx <<<
signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 00680063
r0 00680063 r1 b7be2238 r2 b3f71f20 r3 00760069
r4 b3f71f20 r5 b3f71f20 r6 00000001 r7 b7be2238
r8 b6fce028 r9 00000001 sl 00c52307 fp 00000000
ip 00000000 sp ab501b60 lr b5b21174 pc b5b2135c cpsr 20000010
d0 bff0000000000000 d1 bff0000000000000
d2 0000000000000000 d3 3fe0000000000000
d4 3ff0000000000000 d5 3ff0000000000000
d6 412e848000000000 d7 4000000040000000
d8 0000000000000000 d9 0000000000000000
d10 0000000000000000 d11 0000000000000000
d12 0000000000000000 d13 0000000000000000
d14 0000000000000000 d15 0000000000000000
scr 60000010
backtrace:
#00 pc 0003735c /system/lib/libdvm.so
#01 pc 00037400 /system/lib/libdvm.so
#02 pc 000293a8 /system/lib/libdvm.so (dvmCollectGarbageInternal(GcSpec const*)+340)
#03 pc 00029e30 /system/lib/libdvm.so (dvmMalloc(unsigned int, int)+180)
#04 pc 00068d87 /system/lib/libdvm.so
#05 pc 00021f34 /system/lib/libdvm.so (dvmAsmSisterStart+500)
#06 pc 0002df34 /system/lib/libdvm.so (dvmMterpStd(Thread*)+76)
#07 pc 0002b5cc /system/lib/libdvm.so (dvmInterpret(Thread*, Method const*, JValue*)+184)
#08 pc 00060319 /system/lib/libdvm.so (dvmCallMethodV(Thread*, Method const*, Object*, bool, JValue*, std::__va_list)+336)
#09 pc 0006033d /system/lib/libdvm.so (dvmCallMethod(Thread*, Method const*, Object*, JValue*, ...)+20)
#10 pc 0005502b /system/lib/libdvm.so
#11 pc 0000d060 /system/lib/libc.so (__thread_entry+72)
#12 pc 0000d1f8 /system/lib/libc.so (pthread_create+240)
stack:
ab501b20 b3fe2fc4 /dev/ashmem/dalvik-heap (deleted)
ab501b24 b5b212d4 /system/lib/libdvm.so
ab501b28 b3fe2e00 /dev/ashmem/dalvik-heap (deleted)
ab501b2c 00013e78
ab501b30 00004f9f
ab501b34 b7be2238 [heap]
ab501b38 00000000
ab501b3c 80000000
ab501b40 b3aea0e0 /dev/ashmem/dalvik-zygote (deleted)
ab501b44 b5b21174 /system/lib/libdvm.so
ab501b48 b3f71f20 /dev/ashmem/dalvik-heap (deleted)
ab501b4c b5b991f0 /system/lib/libdvm.so
ab501b50 b6fce0c0 /system/lib/libcutils.so
ab501b54 b7be2238 [heap]
ab501b58 b6fce028 /system/lib/libcutils.so
ab501b5c b5b21330 /system/lib/libdvm.so
#00 ab501b60 b2f3f668 /dev/ashmem/dalvik-mark-stack (deleted)
ab501b64 b7be2238 [heap]
ab501b68 b7be2220 [heap]
ab501b6c b6fce0c0 /system/lib/libcutils.so
ab501b70 b5b991f0 /system/lib/libdvm.so
ab501b74 b5b21404 /system/lib/libdvm.so
#01 ab501b78 b5b91c2c /system/lib/libdvm.so
ab501b7c b5b133ac /system/lib/libdvm.so (dvmCollectGarbageInternal(GcSpec const*)+344)
#02 ab501b80 b3fb08b0 /dev/ashmem/dalvik-heap (deleted)
ab501b84 000000c1
ab501b88 00000000
ab501b8c 00000050
ab501b90 00000050
ab501b94 b3daf008 /dev/ashmem/dalvik-heap (deleted)
ab501b98 00000001
ab501b9c 00000050
ab501ba0 b5b991f0 /system/lib/libdvm.so
ab501ba4 7fffffff
ab501ba8 b3fb08b0 /dev/ashmem/dalvik-heap (deleted)
ab501bac b5b5be19 /system/lib/libdvm.so (mspace_calloc+48)
ab501bb0 ffffffff
ab501bb4 00000000
ab501bb8 00000000
ab501bbc 00000000
........ ........
更详细的分析显示
/system/lib/libdvm.so (dvmCollectGarbageInternal(GcSpec const*)+340)
（GarbageCollection）导致异常。
asyncTask向服务器发出HTTP请求：
protected ArrayList<String> doInBackground(CallbackHolder... params)
{
String responseString;
HttpClient client = null;
try
{
client = HttpClientFactory.createClient();
}
CallbackHolder callback = params[0];
// some other stuff
}
CallbackHolder是一个更复杂的对象，它包含处理结果所需的一些对象。
不幸的是，调试非常困难，因为当应用程序崩溃时，分析结果不会写入磁盘。此外，无法调试异常，因为它位于本机libdvm.so。
我的多线程可能有问题吗？
我只能说，当没有调用AsyncTask时，SIGSEGV不会出现。一旦我尝试访问CallbackHolder，应用程序就崩溃了？ ＆lt; - 对此不确定。
有没有人有一些提示或改进提示？