在Android上调试Opus崩溃

我一直在尝试在我的Android应用程序中实现Opus编解码器，但我不明白为什么它会崩溃。该应用程序正确地实现了其他编解码器（如iLBC），因此我知道java音频实现是可靠的。Java代码获取一帧音频，将其传递给JNI进行编码/解码，然后接收音频

我首先假设JNI实现不正确。
然而：

1） 编码器/解码器的创建没有错误

// Encoder/Decoder states are global
OpusEncoder *enc;
OpusDecoder *dec;

jint Java_org_sipdroid_codecs_Opus_encoderCreate(
    JNIEnv *env, jobject obj, jint sampleRate, jint channels, jint application)
{
   int err;
   enc = opus_encoder_create(sampleRate, channels, OPUS_APPLICATION_VOIP, &err);
   return (jint)err; // returns OPUS_OK
}

2） 数据以与其他编解码器相同的方式传递，并且似乎功能正常（无奇数返回值）：

运行应用程序时，Opus将处理几帧音频（在不崩溃的情况下调用编码/解码），然后应用程序将抛出segfault。以下是JNI stacktrace的一部分：

07-24 16:09:41.642: A/dalvikvm(32168): @@@ ABORTING: DALVIK: HEAP MEMORY CORRUPTION IN     mspace_malloc addr=0x0
07-24 16:09:41.642: A/libc(32168): Fatal signal 11 (SIGSEGV) at 0xdeadbaad (code=1),     thread 32498 (Thread-1674)
07-24 16:09:41.742: I/DEBUG(19804): *** *** *** *** *** *** *** *** *** *** *** *** ***     *** *** ***
07-24 16:09:41.742: I/DEBUG(19804): Build fingerprint:     'lge/g2_vzw/g2:4.4.2/KOT49I.VS98024A/VS98024A.1394607468:user/release-keys'
07-24 16:09:41.742: I/DEBUG(19804): Revision: '10'
07-24 16:09:41.742: I/DEBUG(19804): pid: 32168, tid: 32498, name: Thread-1674 
07-24 16:09:41.742: I/DEBUG(19804): signal 11 (SIGSEGV), code 1 (SEGV_MAPERR),     fault addr deadbaad
07-24 16:09:41.782: I/Vold(263): [LGE][VOLD][NetlinkHandler.cpp][onEvent()] subsys:cpu,     action:0
07-24 16:09:41.822: I/DEBUG(19804):     r0 00000051  r1 bb8d8cdb  r2 bb8d8cdb  r3     deadbaad
07-24 16:09:41.822: I/DEBUG(19804):     r4 00000000  r5 00000013  r6 42c86ec8  r7     00000001
07-24 16:09:41.822: I/DEBUG(19804):     r8 00000094  r9 417b3d50  sl 6202ae68  fp     00000000
07-24 16:09:41.822: I/DEBUG(19804):     ip 00000003  sp 6291ab10  lr 41761d75  pc     41761d76  cpsr 600f0030
07-24 16:09:41.822: I/DEBUG(19804):     d0  000000000000000f  d1  0000000000000000
07-24 16:09:41.822: I/DEBUG(19804):     d2  0000000000000000  d3  0000000000000000
07-24 16:09:41.822: I/DEBUG(19804):     d4  c6d70e48453e7e94  d5  4020000000000000
07-24 16:09:41.822: I/DEBUG(19804):     d6  4024000000000000  d7  0000000000000000
07-24 16:09:41.822: I/DEBUG(19804):     d8  0000000000000000  d9  4487000043160000
07-24 16:09:41.822: I/DEBUG(19804):     d10 0000000044de0000  d11 0000000000000000
07-24 16:09:41.822: I/DEBUG(19804):     d12 0000000000000000  d13 0000000000000000
07-24 16:09:41.822: I/DEBUG(19804):     d14 0000000000000000  d15 0000000000000000
07-24 16:09:41.822: I/DEBUG(19804):     d16 4d454d2050414548  d17 52524f432059524f
07-24 16:09:41.822: I/DEBUG(19804):     d18 00640069006f0072  d19 00640065006d002e
07-24 16:09:41.822: I/DEBUG(19804):     d20 0053002e00610069  d21 0061006500720074
07-24 16:09:41.822: I/DEBUG(19804):     d22 006e006f0043006d  d23 0065006d00750073
07-24 16:09:41.822: I/DEBUG(19804):     d24 3fa2d5157e3a5749  d25 bfa2d5157c96b856
07-24 16:09:41.822: I/DEBUG(19804):     d26 3dea39ef35793c76  d27 4000000000000000
07-24 16:09:41.822: I/DEBUG(19804):     d28 40026143afbf1f95  d29 3fcfa6de9c5a51ea
07-24 16:09:41.822: I/DEBUG(19804):     d30 3ff0000000000000  d31 3ff61a4bb8e2a975
07-24 16:09:41.822: I/DEBUG(19804):     scr 88000012
07-24 16:09:41.822: I/DEBUG(19804): backtrace:
07-24 16:09:41.822: I/DEBUG(19804):     #00  pc 00072d76  /system/lib/libdvm.so
07-24 16:09:41.822: I/DEBUG(19804):     #01  pc 00074981  /system/lib/libdvm.so     (mspace_malloc+4172)
07-24 16:09:41.822: I/DEBUG(19804):     #02  pc 0007530d  /system/lib/libdvm.so     (mspace_calloc+44)
07-24 16:09:41.822: I/DEBUG(19804):     #03  pc 00076375  /system/lib/libdvm.so     (dvmHeapSourceAlloc(unsigned int)+128)
07-24 16:09:41.822: I/DEBUG(19804):     #04  pc 0002cbc4  /system/lib/libdvm.so     (dvmMalloc(unsigned int, int)+64)
07-24 16:09:41.822: I/DEBUG(19804):     #05  pc 0006c22b  /system/lib/libdvm.so
07-24 16:09:41.822: I/DEBUG(19804):     #06  pc 00024834  /system/lib/libdvm.so     (dvmAsmSisterStart+500)
07-24 16:09:41.822: I/DEBUG(19804):     #07  pc 00030ec8  /system/lib/libdvm.so     (dvmMterpStd(Thread*)+76)
07-24 16:09:41.822: I/DEBUG(19804):     #08  pc 0002e560  /system/lib/libdvm.so     (dvmInterpret(Thread*, Method const*, JValue*)+184)
07-24 16:09:41.822: I/DEBUG(19804):     #09  pc 00063795  /system/lib/libdvm.so     (dvmCallMethodV(Thread*, Method const*, Object*, bool, JValue*, std::__va_list)+336)
07-24 16:09:41.822: I/DEBUG(19804):     #10  pc 000637b9  /system/lib/libdvm.so     (dvmCallMethod(Thread*, Method const*, Object*, JValue*, ...)+20)
07-24 16:09:41.822: I/DEBUG(19804):     #11  pc 0005848f  /system/lib/libdvm.so
07-24 16:09:41.822: I/DEBUG(19804):     #12  pc 0000d2e0  /system/lib/libc.so     (__thread_entry+72)
07-24 16:09:41.822: I/DEBUG(19804):     #13  pc 0000d478  /system/lib/libc.so     (pthread_create+240)
07-24 16:09:41.822: I/DEBUG(19804): stack:
07-24 16:09:41.822: I/DEBUG(19804):          6291aad0  400b0394  
07-24 16:09:41.822: I/DEBUG(19804):          6291aad4  442cbb38  /dev/ashmem/dalvik-    heap (deleted)
07-24 16:09:41.822: I/DEBUG(19804):          6291aad8  400b0394  
07-24 16:09:41.822: I/DEBUG(19804):          6291aadc  bb8d8cdb  
07-24 16:09:41.822: I/DEBUG(19804):          6291aae0  000000a0  
07-24 16:09:41.822: I/DEBUG(19804):          6291aae4  57b56d40  /dev/ashmem/dalvik-    LinearAlloc (deleted)
07-24 16:09:41.822: I/DEBUG(19804):          6291aae8  62025008  
07-24 16:09:41.822: I/DEBUG(19804):          6291aaec  00000004  
07-24 16:09:41.822: I/DEBUG(19804):          6291aaf0  6202af78  
07-24 16:09:41.822: I/DEBUG(19804):          6291aaf4  bb8d8cdb  
07-24 16:09:41.822: I/DEBUG(19804):          6291aaf8  00000000  
07-24 16:09:41.822: I/DEBUG(19804):          6291aafc  00000013  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab00  42c86ec8  /dev/ashmem/dalvik-    heap (deleted)
07-24 16:09:41.822: I/DEBUG(19804):          6291ab04  41761d75  /system/lib/libdvm.so
07-24 16:09:41.822: I/DEBUG(19804):          6291ab08  417a0151  /system/lib/libdvm.so
07-24 16:09:41.822: I/DEBUG(19804):          6291ab0c  417a0178  /system/lib/libdvm.so
07-24 16:09:41.822: I/DEBUG(19804):     #00  6291ab10  417a876c  /system/lib/libdvm.so
07-24 16:09:41.822: I/DEBUG(19804):          6291ab14  00000000  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab18  42817008  /dev/ashmem/dalvik-    heap (deleted)
07-24 16:09:41.822: I/DEBUG(19804):          6291ab1c  41763985  /system/lib/libdvm.so     (mspace_malloc+4176)
07-24 16:09:41.822: I/DEBUG(19804):     #01  6291ab20  00000000  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab24  00000094  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab28  00000094  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab2c  42817008  /dev/ashmem/dalvik-    heap (deleted)
07-24 16:09:41.822: I/DEBUG(19804):          6291ab30  00000001  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab34  00000094  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab38  417b3d50  /system/lib/libdvm.so
07-24 16:09:41.822: I/DEBUG(19804):          6291ab3c  6202ae68  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab40  00000000  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab44  41764311  /system/lib/libdvm.so     (mspace_calloc+48)
07-24 16:09:41.822: I/DEBUG(19804):     #02  6291ab48  ffffffff  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab4c  416ecc88  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab50  00000094  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab54  41765379  /system/lib/libdvm.so             (dvmHeapSourceAlloc(unsigned int)+132)
07-24 16:09:41.842: I/DEBUG(19804): memory map around fault addr deadbaad:
07-24 16:09:41.842: I/DEBUG(19804):     beebd000-beede000 rw- [stack]
07-24 16:09:41.842: I/DEBUG(19804):     (no map for address)
07-24 16:09:41.842: I/DEBUG(19804):     ffff0000-ffff1000 r-x [vectors]

看起来像 然后我又看了一遍《藏书集》。我最初下载了源代码，并使用Android NDK和我的Android.mk编译了它。 汇编是成功的。我玩了一会儿旗子，但没用

---

这里会发生什么？

DEADBAAD是删除指针时Java写入内存的值。这意味着您正在访问C中不再有效的某个值。确保在不复制数据的情况下不保留数组，在不增加全局引用计数的情况下不保留java对象，并且正确分配和释放数组和字符串。

看起来，增加我传递给JNI的缓冲区大小似乎缓解了问题——目前，至少仍在调查这个问题。

07-24 16:09:41.642: A/dalvikvm(32168): @@@ ABORTING: DALVIK: HEAP MEMORY CORRUPTION IN     mspace_malloc addr=0x0
07-24 16:09:41.642: A/libc(32168): Fatal signal 11 (SIGSEGV) at 0xdeadbaad (code=1),     thread 32498 (Thread-1674)
07-24 16:09:41.742: I/DEBUG(19804): *** *** *** *** *** *** *** *** *** *** *** *** ***     *** *** ***
07-24 16:09:41.742: I/DEBUG(19804): Build fingerprint:     'lge/g2_vzw/g2:4.4.2/KOT49I.VS98024A/VS98024A.1394607468:user/release-keys'
07-24 16:09:41.742: I/DEBUG(19804): Revision: '10'
07-24 16:09:41.742: I/DEBUG(19804): pid: 32168, tid: 32498, name: Thread-1674 
07-24 16:09:41.742: I/DEBUG(19804): signal 11 (SIGSEGV), code 1 (SEGV_MAPERR),     fault addr deadbaad
07-24 16:09:41.782: I/Vold(263): [LGE][VOLD][NetlinkHandler.cpp][onEvent()] subsys:cpu,     action:0
07-24 16:09:41.822: I/DEBUG(19804):     r0 00000051  r1 bb8d8cdb  r2 bb8d8cdb  r3     deadbaad
07-24 16:09:41.822: I/DEBUG(19804):     r4 00000000  r5 00000013  r6 42c86ec8  r7     00000001
07-24 16:09:41.822: I/DEBUG(19804):     r8 00000094  r9 417b3d50  sl 6202ae68  fp     00000000
07-24 16:09:41.822: I/DEBUG(19804):     ip 00000003  sp 6291ab10  lr 41761d75  pc     41761d76  cpsr 600f0030
07-24 16:09:41.822: I/DEBUG(19804):     d0  000000000000000f  d1  0000000000000000
07-24 16:09:41.822: I/DEBUG(19804):     d2  0000000000000000  d3  0000000000000000
07-24 16:09:41.822: I/DEBUG(19804):     d4  c6d70e48453e7e94  d5  4020000000000000
07-24 16:09:41.822: I/DEBUG(19804):     d6  4024000000000000  d7  0000000000000000
07-24 16:09:41.822: I/DEBUG(19804):     d8  0000000000000000  d9  4487000043160000
07-24 16:09:41.822: I/DEBUG(19804):     d10 0000000044de0000  d11 0000000000000000
07-24 16:09:41.822: I/DEBUG(19804):     d12 0000000000000000  d13 0000000000000000
07-24 16:09:41.822: I/DEBUG(19804):     d14 0000000000000000  d15 0000000000000000
07-24 16:09:41.822: I/DEBUG(19804):     d16 4d454d2050414548  d17 52524f432059524f
07-24 16:09:41.822: I/DEBUG(19804):     d18 00640069006f0072  d19 00640065006d002e
07-24 16:09:41.822: I/DEBUG(19804):     d20 0053002e00610069  d21 0061006500720074
07-24 16:09:41.822: I/DEBUG(19804):     d22 006e006f0043006d  d23 0065006d00750073
07-24 16:09:41.822: I/DEBUG(19804):     d24 3fa2d5157e3a5749  d25 bfa2d5157c96b856
07-24 16:09:41.822: I/DEBUG(19804):     d26 3dea39ef35793c76  d27 4000000000000000
07-24 16:09:41.822: I/DEBUG(19804):     d28 40026143afbf1f95  d29 3fcfa6de9c5a51ea
07-24 16:09:41.822: I/DEBUG(19804):     d30 3ff0000000000000  d31 3ff61a4bb8e2a975
07-24 16:09:41.822: I/DEBUG(19804):     scr 88000012
07-24 16:09:41.822: I/DEBUG(19804): backtrace:
07-24 16:09:41.822: I/DEBUG(19804):     #00  pc 00072d76  /system/lib/libdvm.so
07-24 16:09:41.822: I/DEBUG(19804):     #01  pc 00074981  /system/lib/libdvm.so     (mspace_malloc+4172)
07-24 16:09:41.822: I/DEBUG(19804):     #02  pc 0007530d  /system/lib/libdvm.so     (mspace_calloc+44)
07-24 16:09:41.822: I/DEBUG(19804):     #03  pc 00076375  /system/lib/libdvm.so     (dvmHeapSourceAlloc(unsigned int)+128)
07-24 16:09:41.822: I/DEBUG(19804):     #04  pc 0002cbc4  /system/lib/libdvm.so     (dvmMalloc(unsigned int, int)+64)
07-24 16:09:41.822: I/DEBUG(19804):     #05  pc 0006c22b  /system/lib/libdvm.so
07-24 16:09:41.822: I/DEBUG(19804):     #06  pc 00024834  /system/lib/libdvm.so     (dvmAsmSisterStart+500)
07-24 16:09:41.822: I/DEBUG(19804):     #07  pc 00030ec8  /system/lib/libdvm.so     (dvmMterpStd(Thread*)+76)
07-24 16:09:41.822: I/DEBUG(19804):     #08  pc 0002e560  /system/lib/libdvm.so     (dvmInterpret(Thread*, Method const*, JValue*)+184)
07-24 16:09:41.822: I/DEBUG(19804):     #09  pc 00063795  /system/lib/libdvm.so     (dvmCallMethodV(Thread*, Method const*, Object*, bool, JValue*, std::__va_list)+336)
07-24 16:09:41.822: I/DEBUG(19804):     #10  pc 000637b9  /system/lib/libdvm.so     (dvmCallMethod(Thread*, Method const*, Object*, JValue*, ...)+20)
07-24 16:09:41.822: I/DEBUG(19804):     #11  pc 0005848f  /system/lib/libdvm.so
07-24 16:09:41.822: I/DEBUG(19804):     #12  pc 0000d2e0  /system/lib/libc.so     (__thread_entry+72)
07-24 16:09:41.822: I/DEBUG(19804):     #13  pc 0000d478  /system/lib/libc.so     (pthread_create+240)
07-24 16:09:41.822: I/DEBUG(19804): stack:
07-24 16:09:41.822: I/DEBUG(19804):          6291aad0  400b0394  
07-24 16:09:41.822: I/DEBUG(19804):          6291aad4  442cbb38  /dev/ashmem/dalvik-    heap (deleted)
07-24 16:09:41.822: I/DEBUG(19804):          6291aad8  400b0394  
07-24 16:09:41.822: I/DEBUG(19804):          6291aadc  bb8d8cdb  
07-24 16:09:41.822: I/DEBUG(19804):          6291aae0  000000a0  
07-24 16:09:41.822: I/DEBUG(19804):          6291aae4  57b56d40  /dev/ashmem/dalvik-    LinearAlloc (deleted)
07-24 16:09:41.822: I/DEBUG(19804):          6291aae8  62025008  
07-24 16:09:41.822: I/DEBUG(19804):          6291aaec  00000004  
07-24 16:09:41.822: I/DEBUG(19804):          6291aaf0  6202af78  
07-24 16:09:41.822: I/DEBUG(19804):          6291aaf4  bb8d8cdb  
07-24 16:09:41.822: I/DEBUG(19804):          6291aaf8  00000000  
07-24 16:09:41.822: I/DEBUG(19804):          6291aafc  00000013  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab00  42c86ec8  /dev/ashmem/dalvik-    heap (deleted)
07-24 16:09:41.822: I/DEBUG(19804):          6291ab04  41761d75  /system/lib/libdvm.so
07-24 16:09:41.822: I/DEBUG(19804):          6291ab08  417a0151  /system/lib/libdvm.so
07-24 16:09:41.822: I/DEBUG(19804):          6291ab0c  417a0178  /system/lib/libdvm.so
07-24 16:09:41.822: I/DEBUG(19804):     #00  6291ab10  417a876c  /system/lib/libdvm.so
07-24 16:09:41.822: I/DEBUG(19804):          6291ab14  00000000  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab18  42817008  /dev/ashmem/dalvik-    heap (deleted)
07-24 16:09:41.822: I/DEBUG(19804):          6291ab1c  41763985  /system/lib/libdvm.so     (mspace_malloc+4176)
07-24 16:09:41.822: I/DEBUG(19804):     #01  6291ab20  00000000  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab24  00000094  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab28  00000094  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab2c  42817008  /dev/ashmem/dalvik-    heap (deleted)
07-24 16:09:41.822: I/DEBUG(19804):          6291ab30  00000001  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab34  00000094  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab38  417b3d50  /system/lib/libdvm.so
07-24 16:09:41.822: I/DEBUG(19804):          6291ab3c  6202ae68  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab40  00000000  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab44  41764311  /system/lib/libdvm.so     (mspace_calloc+48)
07-24 16:09:41.822: I/DEBUG(19804):     #02  6291ab48  ffffffff  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab4c  416ecc88  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab50  00000094  
07-24 16:09:41.822: I/DEBUG(19804):          6291ab54  41765379  /system/lib/libdvm.so             (dvmHeapSourceAlloc(unsigned int)+132)
07-24 16:09:41.842: I/DEBUG(19804): memory map around fault addr deadbaad:
07-24 16:09:41.842: I/DEBUG(19804):     beebd000-beede000 rw- [stack]
07-24 16:09:41.842: I/DEBUG(19804):     (no map for address)
07-24 16:09:41.842: I/DEBUG(19804):     ffff0000-ffff1000 r-x [vectors]