Android libc.so 崩溃？

我正在使用 AndEngine 和PhysicsBox2DExtension 来制作游戏。我的游戏不断崩溃，我在未经过滤的 LogCat 中得到以下信息：

07-06 13:25:27.266: I/DEBUG(19582): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
07-06 13:25:27.266: I/DEBUG(19582): Build fingerprint: 'TMOUS/SGH-T959V/SGH-T959V/SGH-T959V:2.2.1/FROYO/VUVKD1:user/release-keys'
07-06 13:25:27.274: I/DEBUG(19582): pid: 22238, tid: 22263  >>> com.prattia.webs.testgfx5 <<<
07-06 13:25:27.274: I/DEBUG(19582): signal 11 (SIGSEGV), fault addr deadbaad
07-06 13:25:27.286: I/DEBUG(19582):  r0 00000000  r1 afd14921  r2 00000027  r3 00000070
07-06 13:25:27.286: I/DEBUG(19582):  r4 afd42328  r5 00000000  r6 00000000  r7 43095ba0
07-06 13:25:27.297: I/DEBUG(19582):  r8 447d75ac  r9 43095b5c  10 80aa23f4  fp 43095b58
07-06 13:25:27.297: I/DEBUG(19582):  ip 00001730  sp 447d74c8  lr deadbaad  pc afd11f74  cpsr 60000030
07-06 13:25:27.301: I/DEBUG(19582):  d0  6472656767756265  d1  646f426574616572
07-06 13:25:27.301: I/DEBUG(19582):  d2  2074736e6f632879  d3  654479646f423262
07-06 13:25:27.305: I/DEBUG(19582):  d4  73656e69676e655f  d5  69676e45646e412f
07-06 13:25:27.309: I/DEBUG(19582):  d6  6e45646e412f656e  d7  73796850656e6967
07-06 13:25:27.309: I/DEBUG(19582):  d8  40c9de1ed6a7d420  d9  43e0000000000000
07-06 13:25:27.313: I/DEBUG(19582):  d10 41dfffffffc00000  d11 c3e0000000000000
07-06 13:25:27.313: I/DEBUG(19582):  d12 0000000000000000  d13 0000000000000000
07-06 13:25:27.313: I/DEBUG(19582):  d14 0000000000000000  d15 0000000000000000
07-06 13:25:27.317: I/DEBUG(19582):  d16 000000c247d403f0  d17 400921fb54442d18
07-06 13:25:27.317: I/DEBUG(19582):  d18 3f810f1cab7c1816  d19 3f651bd7d319330c
07-06 13:25:27.317: I/DEBUG(19582):  d20 bfc55034095fd11a  d21 be5ae514498b308e
07-06 13:25:27.321: I/DEBUG(19582):  d22 0000000000000000  d23 3de5d93a5acfd57c
07-06 13:25:27.325: I/DEBUG(19582):  d24 bfb3b25552016f7e  d25 3fb10e9526779bed
07-06 13:25:27.325: I/DEBUG(19582):  d26 bfaddfe9639fbb1a  d27 3fa97c111b7b144e
07-06 13:25:27.325: I/DEBUG(19582):  d28 bfa2b4442c6a6c2f  d29 0000000000000000
07-06 13:25:27.325: I/DEBUG(19582):  d30 0000000000000000  d31 0000000000000000
07-06 13:25:27.325: I/DEBUG(19582):  scr 60000012
07-06 13:25:27.469: I/DEBUG(19582):          #00  pc 00011f74  /system/lib/libc.so
07-06 13:25:27.473: I/DEBUG(19582):          #01  pc 0001921e  /system/lib/libc.so
07-06 13:25:27.473: I/DEBUG(19582):          #02  pc 00026558  /data/data/com.prattia.webs.testgfx5/lib/libandenginephysicsbox2dextension.so
07-06 13:25:27.473: I/DEBUG(19582):          #03  pc 00013e7c  /data/data/com.prattia.webs.testgfx5/lib/libandenginephysicsbox2dextension.so
07-06 13:25:27.473: I/DEBUG(19582):          #04  pc 00016e34  /system/lib/libdvm.so
07-06 13:25:27.473: I/DEBUG(19582): code around pc:
07-06 13:25:27.473: I/DEBUG(19582): afd11f54 2d00682d e029d1fb b12b68db c05cf8df 
07-06 13:25:27.473: I/DEBUG(19582): afd11f64 f8442001 4798000c e054f8df 26002227 
07-06 13:25:27.473: I/DEBUG(19582): afd11f74 2000f88e eec2f7fb f7fc2106 f04feff8 
07-06 13:25:27.473: I/DEBUG(19582): afd11f84 91035180 460aa901 96012006 f7fc9602 
07-06 13:25:27.473: I/DEBUG(19582): afd11f94 a905eb7e 20024632 eb88f7fc eeaef7fb 
07-06 13:25:27.473: I/DEBUG(19582): code around lr:
07-06 13:25:27.477: I/DEBUG(19582): deadba8c ffffffff ffffffff ffffffff ffffffff 
07-06 13:25:27.477: I/DEBUG(19582): deadba9c ffffffff ffffffff ffffffff ffffffff 
07-06 13:25:27.477: I/DEBUG(19582): deadbaac ffffffff ffffffff ffffffff ffffffff 
07-06 13:25:27.477: I/DEBUG(19582): deadbabc ffffffff ffffffff ffffffff ffffffff 
07-06 13:25:27.477: I/DEBUG(19582): deadbacc ffffffff ffffffff ffffffff ffffffff 
07-06 13:25:27.477: I/DEBUG(19582): stack:
07-06 13:25:27.477: I/DEBUG(19582):     447d7488  00000000  
07-06 13:25:27.477: I/DEBUG(19582):     447d748c  00000000  
07-06 13:25:27.477: I/DEBUG(19582):     447d7490  afd425a0  /system/lib/libc.so
07-06 13:25:27.477: I/DEBUG(19582):     447d7494  afd4254c  /system/lib/libc.so
07-06 13:25:27.477: I/DEBUG(19582):     447d7498  00000000  
07-06 13:25:27.477: I/DEBUG(19582):     447d749c  afd1596b  /system/lib/libc.so
07-06 13:25:27.481: I/DEBUG(19582):     447d74a0  afd14921  /system/lib/libc.so
07-06 13:25:27.481: I/DEBUG(19582):     447d74a4  afd14921  /system/lib/libc.so
07-06 13:25:27.481: I/DEBUG(19582):     447d74a8  00000070  
07-06 13:25:27.481: I/DEBUG(19582):     447d74ac  afd42328  /system/lib/libc.so
07-06 13:25:27.481: I/DEBUG(19582):     447d74b0  00000000  
07-06 13:25:27.481: I/DEBUG(19582):     447d74b4  447d74dc  
07-06 13:25:27.481: I/DEBUG(19582):     447d74b8  43095ba0  
07-06 13:25:27.481: I/DEBUG(19582):     447d74bc  afd14bc3  /system/lib/libc.so
07-06 13:25:27.481: I/DEBUG(19582):     447d74c0  df002777  
07-06 13:25:27.481: I/DEBUG(19582):     447d74c4  e3a070ad  
07-06 13:25:27.481: I/DEBUG(19582): #00 447d74c8  00000003  
07-06 13:25:27.481: I/DEBUG(19582):     447d74cc  43095b58  
07-06 13:25:27.481: I/DEBUG(19582):     447d74d0  43095ba0  
07-06 13:25:27.485: I/DEBUG(19582):     447d74d4  afd14f29  /system/lib/libc.so
07-06 13:25:27.485: I/DEBUG(19582):     447d74d8  afd4254c  /system/lib/libc.so
07-06 13:25:27.485: I/DEBUG(19582):     447d74dc  fffffbdf  
07-06 13:25:27.485: I/DEBUG(19582):     447d74e0  00000054  
07-06 13:25:27.485: I/DEBUG(19582):     447d74e4  00000003  
07-06 13:25:27.485: I/DEBUG(19582):     447d74e8  43095b58  
07-06 13:25:27.489: I/DEBUG(19582):     447d74ec  afd19223  /system/lib/libc.so
07-06 13:25:27.489: I/DEBUG(19582): #01 447d74f0  00000054  
07-06 13:25:27.489: I/DEBUG(19582):     447d74f4  821412bc  /data/data/com.prattia.webs.testgfx5/lib/libandenginephysicsbox2dextension.so
07-06 13:25:27.489: I/DEBUG(19582):     447d74f8  447d75d0  
07-06 13:25:27.489: I/DEBUG(19582):     447d74fc  8212655c  /data/data/com.prattia.webs.testgfx5/lib/libandenginephysicsbox2dextension.so
07-06 13:25:28.040: I/DEBUG(19582): dumpstate /data/log/dumpstate_app_native.txt
07-06 13:25:28.114: I/dumpstate(22478): begin
07-06 13:25:28.122: I/dalvikvm(2480): threadid=3: reacting to signal 3
07-06 13:25:28.157: I/dalvikvm(2480): Wrote stack traces to '/data/anr/traces.txt'
07-06 13:25:28.192: I/BootReceiver(2480): Copying /data/tombstones/tombstone_09 to DropBox (SYSTEM_TOMBSTONE)
07-06 13:25:28.239: I/dalvikvm(2604): threadid=3: reacting to signal 3
07-06 13:25:28.239: I/dalvikvm(2604): Wrote stack traces to '/data/anr/traces.txt'

谁能向我解释发生了什么事以及我如何找到导致崩溃的确切原因？

我的代码中有两个地方崩溃了，但崩溃时是相当随机的。执行该方法后：

private void destroyFiller(){ //Deletes filler
        if(filler[fillerNum].active){
            Log.e("destroyFiller","Destroying filler");
            filler[fillerNum].active=false;
            filler[fillerNum].body.setActive(false);
            scene.detachChild(filler[fillerNum].sprite);
            fillerCount--;
            fillersLeftText.setText("Balls left: "+Integer.toString(fillerCount));

            if(fillerCount==0)
                gameOver();
            Log.e("destroyFiller","Destroyed");
        }
    }

执行此方法中的指示行后：

private void levelComplete(){
        runOnUiThread(new Runnable() {
            public void run() {
                 Toast.makeText(TestGFX5Activity.this, "Level Complete", Toast.LENGTH_SHORT).show();
            }
        });
        Log.e("Level Complete","Going to reset values");
        //Reset values
        level++;
        destroyerNum++;
        fillerCount = (originalNumberOfFillers + level - 1);
        areaFilled=0;
        fillAreaPercent = 0;

        //Rid scene of sprites
        for(int x=0;x<=fillerNum;x++){  
            filler[x].body.setActive(false);
            scene.detachChild(filler[x].sprite);
            filler[x].active=false;
            filler[x].scale=originalSpriteScale;
            filler[x].body.setUserData("inactive");
        }
        levelText.setText("Level: "+Integer.toString(level));
        fillersLeftText.setText("Balls left: "+Integer.toString(fillerCount));
        percentFilledText.setText("0%");
        fillerNum = -1;

        Log.e("Level Complete","values reset");

        randx = random.nextInt(650) + 25;
        randy = random.nextInt(400) + 25;
        randix = random.nextInt(10);
        randiy = random.nextInt(10);
        if(randix%2==0)
            ix = 5;
        else
            ix = -5;
        if(randiy%2==0)
            iy = 5;
        else
            iy = -5;

        Log.e("Level Complete","Creating destroyer");
        destroyer[destroyerNum] = new Ball(randx, randy, destroyerTR, getVertexBufferObjectManager(), ix, iy); //crashes here
        Log.e("Level Complete","complete"); //This line never reached.
    }

你应该使用addr2line所描述的工具here并在您的库中查找这两个地址以查找导致崩溃的原因：

#02  pc 00026558  /data/data/com.prattia.webs.testgfx5/lib/libandenginephysicsbox2dextension.so
#03  pc 00013e7c  /data/data/com.prattia.webs.testgfx5/lib/libandenginephysicsbox2dextension.so

所以在 Windows 下你应该：

1. 从设备复制库：

   adb pull /data/data/com.prattia.webs.testgfx5/lib/libandenginephysicsbox2dextension.so C:\
   

2. Run addr2line使用命令行的工具：

   cd %PATH_TO_YOUR_NDK%\toolchains\arm-linux-androideabi-4.4.3\prebuilt\linux-x86\bin
   arm-linux-androideabi-addr2line -C -f -e C:\libandenginephysicsbox2dextension.so
   

3. 按地址输入地址：

   00026558 [ENTER]
   > here will be function name and line
   00013e7c [ENTER]
   > and again
   

注意：在 Windows 下运行此工具可能会比在 Linux 下提供更少的信息，因此您可以选择将发行版安装为虚拟机，并按照上面原始答案链接中的说明进行操作。

Update

另一种（更简单？）方法是使用ndk-stack:

1. 如从前那样
2. 将转储保存到文件中。我们将其称为“dump.txt”。

3. Run ndk-stack:

   cd %PATH_TO_YOUR_NDK%
   ndk-stack -sym C:\libandenginephysicsbox2dextension.so -dump C:\dump.txt