Details
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Bug
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Resolution: Done
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P1: Critical
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5.12
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Manjaro Linux
clang 8.0.0
g++ 8.2.1
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eb363c3a0b7f96015d7b8f2551dbeaa86f5acf16 (qt/qtdeclarative/5.12)
Description
- Have a release build of Qt with enabled address sanitizer.
I configured it with:-opensource -confirm-license -no-use-gold-linker -prefix $(pwd)/qtbase -platform linux-clang -sanitize address -nomake examples -nomake tests
- Build the attached project
on this build of Qt:
#include <QCoreApplication> #include <QFile> #include <QJSEngine> int main(int argc, char *argv[]) { QCoreApplication a(argc, argv); if (argc < 2) return -1; QFile inFile(argv[1]); inFile.open(QFile::ReadOnly); QJSEngine().evaluate(inFile.readAll()); return 0; }
- Run the program passing the attached input file as parameter.
It will crash with output like the following:QML debugging is enabled. Only use this in a safe environment. AddressSanitizer:DEADLYSIGNAL ================================================================= ==6375==ERROR: AddressSanitizer: SEGV on unknown address 0x7f0a75d87000 (pc 0x7f0a7d88e84a bp 0x7ffe58788350 sp 0x7ffe58788220 T0) ==6375==The signal is caused by a WRITE memory access. #0 0x7f0a7d88e849 in QV4::MemoryManager::collectRoots(QV4::MarkStack*) (/home/qtrob/dev/clang-8.0.0/qt-5.12_base_declarative-asan/qtbase/lib/libQt5Qml.so.5+0x194849) #1 0x7f0a7d8978b0 in QV4::MemoryManager::runGC() (/home/qtrob/dev/clang-8.0.0/qt-5.12_base_declarative-asan/qtbase/lib/libQt5Qml.so.5+0x19d8b0) #2 0x7f0a7d8a1d28 in QV4::MemoryManager::allocate(QV4::BlockAllocator*, unsigned long) (/home/qtrob/dev/clang-8.0.0/qt-5.12_base_declarative-asan/qtbase/lib/libQt5Qml.so.5+0x1a7d28) #3 0x7f0a7d88e0e5 in QV4::MemoryManager::allocData(unsigned long) (/home/qtrob/dev/clang-8.0.0/qt-5.12_base_declarative-asan/qtbase/lib/libQt5Qml.so.5+0x1940e5) #4 0x7f0a7de23ebe in QV4::RuntimeHelpers::addHelper(QV4::ExecutionEngine*, QV4::Value const&, QV4::Value const&) (/home/qtrob/dev/clang-8.0.0/qt-5.12_base_declarative-asan/qtbase/lib/libQt5Qml.so.5+0x729ebe) LLVMSymbolizer: error reading file: No such file or directory #5 0x7f0a76f99b6e (/memfd:JITCode:/home/qtrob/dev/clang-8.0.0/qt-5.12_base_declarative-asan/qtbase/lib/libQt5Qml.so.5 (deleted)+0x6b6e) AddressSanitizer can not provide additional info. SUMMARY: AddressSanitizer: SEGV (/home/qtrob/dev/clang-8.0.0/qt-5.12_base_declarative-asan/qtbase/lib/libQt5Qml.so.5+0x194849) in QV4::MemoryManager::collectRoots(QV4::MarkStack*) ==6375==ABORTINGTrying to debug this will give you this backtrace (full backtrace attached
):1 QV4::MemoryManager::collectRoots(QV4::MarkStack *) 0x7ffff70df84a 2 QV4::MemoryManager::runGC() 0x7ffff70e88b1 3 QV4::MemoryManager::allocate(QV4::BlockAllocator *, unsigned long) 0x7ffff70f2d29 4 QV4::MemoryManager::allocData(unsigned long) 0x7ffff70df0e6 5 QV4::RuntimeHelpers::addHelper(QV4::ExecutionEngine *, QV4::Value const&, QV4::Value const&) 0x7ffff7674ebf 6 QV4::Moth::VME::interpret(QV4::CppStackFrame *, QV4::ExecutionEngine *, const char *) 0x7ffff74c43c1 7 QV4::Moth::VME::exec(QV4::CppStackFrame *, QV4::ExecutionEngine *) 0x7ffff74bf416 8 QV4::ArrowFunction::virtualCall(QV4::FunctionObject const *, QV4::Value const *, QV4::Value const *, int) 0x7ffff738828d 9 QV4::Moth::VME::interpret(QV4::CppStackFrame *, QV4::ExecutionEngine *, const char *) 0x7ffff74ca3d1 10 QV4::Moth::VME::exec(QV4::CppStackFrame *, QV4::ExecutionEngine *) 0x7ffff74bf416 11 QV4::ArrowFunction::virtualCall(QV4::FunctionObject const *, QV4::Value const *, QV4::Value const *, int) 0x7ffff738828d 12 QV4::Moth::VME::interpret(QV4::CppStackFrame *, QV4::ExecutionEngine *, const char *) 0x7ffff74ca3d1 13 QV4::Moth::VME::exec(QV4::CppStackFrame *, QV4::ExecutionEngine *) 0x7ffff74bf416 14 QV4::ArrowFunction::virtualCall(QV4::FunctionObject const *, QV4::Value const *, QV4::Value const *, int) 0x7ffff738828d 15 QV4::Moth::VME::interpret(QV4::CppStackFrame *, QV4::ExecutionEngine *, const char *) 0x7ffff74ca3d1 16 QV4::Moth::VME::exec(QV4::CppStackFrame *, QV4::ExecutionEngine *) 0x7ffff74bf416 17 QV4::ArrowFunction::virtualCall(QV4::FunctionObject const *, QV4::Value const *, QV4::Value const *, int) 0x7ffff738828d 18 QV4::Moth::VME::interpret(QV4::CppStackFrame *, QV4::ExecutionEngine *, const char *) 0x7ffff74ca3d1 19 QV4::Moth::VME::exec(QV4::CppStackFrame *, QV4::ExecutionEngine *) 0x7ffff74bf416 20 QV4::ArrowFunction::virtualCall(QV4::FunctionObject const *, QV4::Value const *, QV4::Value const *, int) 0x7ffff738828d ... <Mehr>