07-07 09:59:28.315 9590 9590 I DEBUG : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
07-07 09:59:28.315 9590 9590 I DEBUG : Build fingerprint: 'vivo/bbk6752_lwt_l/bbk6752_lwt_l:5.0/LRX21M/1439438287:eng/release-keys'
07-07 09:59:28.315 9590 9590 I DEBUG : Revision: '0'
07-07 09:59:28.315 9590 9590 I DEBUG : ABI: 'arm64'
07-07 09:59:28.316 9590 9590 I DEBUG : pid: 9422, tid: 9579, name: tmsdkobf.gc$1 >>> com.iqoo.secure <<<
07-07 09:59:28.316 9590 9590 I DEBUG : signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
07-07 09:59:28.438 9590 9590 I DEBUG : Abort message: 'art/runtime/thread.cc:1115] No pending exception expected: java.lang.NullPointerException: Attempt to read from field 'long com.iqoo.secure.ui.phoneoptimize.utils.ListItemInfo.appSize' on a null object reference'
07-07 09:59:28.438 9590 9590 I DEBUG : x0 0000000000000000 x1 000000000000256b x2 0000000000000006 x3 0000007f7e517000
07-07 09:59:28.438 9590 9590 I DEBUG : x4 0000007f7e517000 x5 0000000000000005 x6 0000000000000001 x7 0000000000000020
07-07 09:59:28.438 9590 9590 I DEBUG : x8 0000000000000083 x9 0000007f997fb000 x10 0000007f997fd4c0 x11 0000000000000001
07-07 09:59:28.438 9590 9590 I DEBUG : x12 0000000000000001 x13 0000000000000000 x14 0000000000000000 x15 0000000000000001
07-07 09:59:28.439 9590 9590 I DEBUG : x16 0000007f9d15a6e8 x17 0000007f9d0fb48c x18 0000000000000000 x19 0000007f7e517000
07-07 09:59:28.439 9590 9590 I DEBUG : x20 0000007f7c4ffb90 x21 0000007f9d160000 x22 000000000000000b x23 0000000000000006
07-07 09:59:28.439 9590 9590 I DEBUG : x24 0000000000000005 x25 0000007f9987c740 x26 0000007f85169800 x27 0000007f85169800
07-07 09:59:28.439 9590 9590 I DEBUG : x28 0000007f83d3d000 x29 0000007f7c4fc450 x30 0000007f9d0bc6e4
07-07 09:59:28.439 9590 9590 I DEBUG : sp 0000007f7c4fc450 pc 0000007f9d0fb494 pstate 0000000060000000
07-07 09:59:28.439 9590 9590 I DEBUG :
07-07 09:59:28.439 9590 9590 I DEBUG : backtrace:
07-07 09:59:28.439 9590 9590 I DEBUG : #00 pc 000000000005e494 /system/lib64/libc.so (tgkill+8)
07-07 09:59:28.440 9590 9590 I DEBUG : #01 pc 000000000001f6e0 /system/lib64/libc.so (pthread_kill+160)
07-07 09:59:28.440 9590 9590 I DEBUG : #02 pc 0000000000020c14 /system/lib64/libc.so (raise+28)
07-07 09:59:28.440 9590 9590 I DEBUG : #03 pc 000000000001a6bc /system/lib64/libc.so (abort+60)
07-07 09:59:28.440 9590 9590 I DEBUG : #04 pc 00000000002e8994 /system/lib64/libart.so (art::Runtime::Abort()+212)
07-07 09:59:28.440 9590 9590 I DEBUG : #05 pc 00000000000ce678 /system/lib64/libart.so (art::LogMessage::~LogMessage()+2684)
07-07 09:59:28.440 9590 9590 I DEBUG : #06 pc 00000000002ff1c0 /system/lib64/libart.so (_ZNK3art6Thread24AssertNoPendingExceptionEv.part.149+940)
07-07 09:59:28.440 9590 9590 I DEBUG : #07 pc 0000000000111498 /system/lib64/libart.so (art::ClassLinker::FindClass(art::Thread*, char const*, art::Handle<art::mirror::ClassLoader>)+56)
07-07 09:59:28.440 9590 9590 I DEBUG : #08 pc 00000000002680fc /system/lib64/libart.so (art::JNI::FindClass(_JNIEnv*, char const*)+1376)
07-07 09:59:28.440 9590 9590 I DEBUG : #09 pc 000000000001a4dc /system/lib64/libdce-1.1.3-mfr.so android-ndk-r10c/platforms/android-21/arch-arm64/usr/include/jni.h:519
07-07 09:59:28.440 9590 9590 I DEBUG : #10 pc 000000000001b220 /system/lib64/libdce-1.1.3-mfr.so PiDeepClean/jni/ext/deepclean/SoftPathScanner.cpp:844
07-07 09:59:28.440 9590 9590 I DEBUG : #11 pc 000000000001b37c /system/lib64/libdce-1.1.3-mfr.so android-ndk-r10c/sources/cxx-stl/stlport/stlport/stl/_hashtable.h:502
07-07 09:59:28.440 9590 9590 I DEBUG : #12 pc 000000000001ba10 /system/lib64/libdce-1.1.3-mfr.so PiDeepClean/jni/ext/deepclean/SoftPathScanner.cpp:843
07-07 09:59:28.441 9590 9590 I DEBUG : #13 pc 0000000000007dc4 /system/lib64/libdce-1.1.3-mfr.so PiDeepClean/jni/main.cpp:248 ((SoftPathScanner *)ptr)->startScan(env, strPath);
07-07 09:59:28.441 9590 9590 I DEBUG : #14 pc 00000000000c830c /system/lib64/libart.so (art_quick_generic_jni_trampoline+140)
07-07 09:59:28.441 9590 9590 I DEBUG : #15 pc 00000000000c3444 /system/lib64/libart.so (art_quick_invoke_stub+564)
PiDeepClean/jni/ext/deepclean/SoftPathScanner.cpp
<?prettify linenums=841?>
isFind = isFindRootPath(fileName);
LOGV("isFindRootPath %d %s", isFind, fileName);
if(isFind) {
bool isEmpty = scanSoftRootPath(fileName);
if(isEmpty) {
// int len = strlen(fileNa
从代码看应该是844行有问题，展开844行的代码
<?prettify linenums=324?>
bool SoftPathScanner::scanSoftRootPath(const char rootPathName)
{
if(mScanEnv == NULL || mThiz == NULL || rootPathName == NULL || mIsScanCancled) {
return false;
}
bool ret = true;
LOGV("scanSoftRootPath %s", rootPathName);
SoftPathInfo info;
info.rootPath = rootPathName;
info.detailPathsVector = new vector<char>();
info.notScanPathsVector = new vector();
info.detailPathsDiffByDays = new vector();
//获取详细路径
jstring path = mScanEnv->NewStringUTF(rootPathName);
jstring detailPaths = (jstring)mScanEnv->CallObjectMethod(mThiz, methodIdofgetRootPathDetailPath, path);
getDetailPaths(&info, detailPaths);
mScanEnv->DeleteLocalRef(detailPaths);
mScanEnv->DeleteLocalRef(path);
有疑点的是CallObjectMethod方法，但这个方法和堆栈中的art::JNI::FindClass不合。
进一步分析堆栈的报错头部
Abort message: 'art/runtime/thread.cc:1115] No pending exception expected: java.lang.NullPointerException: Attempt to read from field 'long com.iqoo.secure.ui.phoneoptimize.utils.ListItemInfo.appSize' on a null object reference'
从android的源码上看
art/runtime/class_linker.cc
<?prettify linenums=1719?>
mirror::Class* ClassLinker::FindClass(Thread* self, const char* descriptor,
Handlemirror::ClassLoader classloader) {
DCHECKNE(descriptor, '\0') << "descriptor is empty string";
DCHECK(self != nullptr);
self->AssertNoPendingException();
if (descriptor[1] == '\0') {
// only the descriptors of primitive types should be 1 character long, also avoid class lookup
// for primitive classes that aren't backed by dex files.
return FindPrimitiveClass(descriptor[0]);
}
const size_t hash = ComputeModifiedUtf8Hash(descriptor);
// Find the class in the loaded classes table.
mirror::Class klass = LookupClass(self, descriptor, hash, class_loader.Get());
if (klass != nullptr) {
return EnsureResolved(self, descriptor, klass);
}
对应的1723行为报错的断言。
对应的android的文档是这样的解释的You must not call most JNI functions while an exception is pending.
可见是调用jni的函数时有未处理的exception导致的，这个未处理的exception应该就是java.lang.NullPointerException: Attempt to read from field 'long com.iqoo.secure.ui.phoneoptimize.utils.ListItemInfo.appSize' on a null object reference。