Fix for bug #241 Perfparser/Hotspot cannot unwind the stack for fork(… by vtoropov · Pull Request #10 · KDAB/perfparser

vtoropov · 2020-05-25T11:04:07Z

…) of created processes
The fork() creates a new process by duplicating the calling process. The new process is referred to as the child process. The calling process is referred to as the parent process. Perf.data contains PERF_RECORD_MMAP2 events for the parent process, and therefore the Symbol Table of the parent process contains Elf information. For the child process, we do not have PERF_RECORD_MMAP2 events, and for this reason the Symbol Table for the child process does not contain any Elf information. And as a fact, we cannot unwind the stack for functions of child processes. Therefore, we should be able to use the Elf information of the parent process. To do this, write a link to the Symbol Table of the parent process in the std vector saveParentSymTable. We cannot copy Elf information from the Symbol table of the parent, as we will get an error on the destructor of the ElfAndFile class.

…perf_event_type

Apparently android's simpleperf doesn't contain the HOSTNAME feature. Yet the data is still valid - trying to unbreak it would actually break it for real. Fixes: KDAB/hotspot#224 Change-Id: I0ed694a79fc731728edee8f6e2e3ba52717e2ea4

This triggers an infinite loop for me. This reverts commit 33ad832.

When librustc_demangle.so and rustc_demangle.h are provided externally, perfparser can now leverage that to demangle rust symbols. See also: https://github.com/alexcrichton/rustc-demangle Relates-To: KDAB/hotspot#237 Change-Id: I0a66598e4ae3aa1dbf2776587934677beadd5968

…) of created processes

milianw

hey, sorry for the long delay - I was busy with other projects

as-is this patch is far too invasive for what should (I believe) be a much smaller change: when we detect a new process through fork, initialize its PerfSymbolTable with the current elf table from the parent. so something like this:

--- a/app/perfunwind.cpp
+++ b/app/perfunwind.cpp
@@ -691,6 +691,7 @@ void PerfUnwind::fork(const PerfRecordFork &sample)
     bufferEvent(TaskEvent{sample.childPid(), sample.childTid(), sample.time(), sample.cpu(),
                           0, ThreadStart},
                 &m_taskEventsBuffer, &m_stats.numTaskEventsInRound);
+    symbolTable(sample.childPid())->fork(symbolTable(sample.parentPid()))
 }
 
 void PerfUnwind::exit(const PerfRecordExit &sample)

then, within the new PerfSymbolTable::fork(const PerfSymbolTable *parent) method, we just copy the m_elfs member and be done with it, no?

milianw · 2020-05-26T21:42:08Z

app/perfunwind.cpp

 const qint32 PerfUnwind::s_kernelPid = -1;
+// We use the std vector saveParentSymTable to store
+// the reference to the Symbol Table of the parent process.
+std::vector<PerfForkStart> saveParentSymTable;


please don't use global state for this

if we instead pass the parent pid to the symbol table, we can query it's symbol table from the PerfUnwind instead, no?

milianw · 2020-05-26T21:42:21Z

app/perfunwind.cpp


+// If the vector contains an element for the current process,
+// we can use the Elf information of the parent process.
+bool findParentsSymTable(qint32 pid, PerfSymbolTable **parentSym) {


return a ptr instead of returning a bool and using an out param

milianw · 2020-06-12T20:15:16Z

please test the new code that's now available - I believe the issue is resolved now

In qt6 QHash is no longer iterator safe ==138723==ERROR: AddressSanitizer: heap-use-after-free on address 0x51b000035c68 at pc 0x5d085ec696b9 bp 0x7ffe43776e00 sp 0x7ffe43776df0 READ of size 8 at 0x51b000035c68 thread T0 #0 0x5d085ec696b8 in void qt_ptr_swap<QTypedArrayData<char> >(QTypedArrayData<char>*&, QTypedArrayData<char>*&) /usr/include/qt6/QtCore/qswap.h:31 #1 0x5d085ec67e4f in QArrayDataPointer<char>::swap(QArrayDataPointer<char>&) /usr/include/qt6/QtCore/qarraydatapointer.h:131 #2 0x5d085ec66e97 in QByteArray::swap(QByteArray&) /usr/include/qt6/QtCore/qbytearray.h:103 #3 0x5d085ec66da8 in QByteArray::operator=(QByteArray&&) /usr/include/qt6/QtCore/qbytearray.h:101 #4 0x5d085ef0ca5c in CuDieRangeMapping::dieName(Dwarf_Die*) /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfdwarfdiecache.cpp:364 #5 0x5d085ee36e7c in operator() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfsymboltable.cpp:768 #6 0x5d085ee39eea in PerfSymbolTable::lookupFrame(unsigned long, bool, bool*) /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfsymboltable.cpp:774 #7 0x5d085ed06ec5 in frameCallback /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfunwind.cpp:541 #8 0x75a7437f7b08 in dwfl_thread_getframes (/usr/lib/libdw.so.1+0x5bb08) (BuildId: 9b3f42d0dd4107f1cd947702b04157dad2a9069a) #9 0x75a7437f2eba (/usr/lib/libdw.so.1+0x56eba) (BuildId: 9b3f42d0dd4107f1cd947702b04157dad2a9069a) #10 0x75a7437f3f2b in dwfl_getthreads (/usr/lib/libdw.so.1+0x57f2b) (BuildId: 9b3f42d0dd4107f1cd947702b04157dad2a9069a) #11 0x75a7437f7e81 in dwfl_getthread_frames (/usr/lib/libdw.so.1+0x5be81) (BuildId: 9b3f42d0dd4107f1cd947702b04157dad2a9069a) #12 0x5d085ed07b21 in PerfUnwind::unwindStack() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfunwind.cpp:557 #13 0x5d085ed0d129 in PerfUnwind::analyze(PerfRecordSample const&) /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfunwind.cpp:744 #14 0x5d085ed1b65f in PerfUnwind::flushEventBuffer(unsigned int) /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfunwind.cpp:1115 #15 0x5d085ed164b1 in PerfUnwind::finishedRound() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfunwind.cpp:976 #16 0x5d085ecc2fe8 in PerfData::processEvents(QDataStream&) /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfdata.cpp:243 #17 0x5d085eccbdc2 in PerfData::doRead() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfdata.cpp:414 #18 0x5d085eccd6f3 in PerfData::read() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfdata.cpp:431 #19 0x5d085ebfa511 in operator() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/main.cpp:383 #20 0x5d085ebfd5c6 in operator() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/main.cpp:452 #21 0x5d085ec0b9b9 in call /usr/include/qt6/QtCore/qobjectdefs_impl.h:137 #22 0x5d085ec0b121 in call<QtPrivate::List<>, void> /usr/include/qt6/QtCore/qobjectdefs_impl.h:345 #23 0x5d085ec0aa1e in impl /usr/include/qt6/QtCore/qobjectdefs_impl.h:555 #24 0x75a7429a3456 (/usr/lib/libQt6Core.so.6+0x1a3456) (BuildId: 2dc7cac262eec1f545dffaf6727f87faf910fb09) #25 0x5d085ec33520 in PerfHeader::finished() /home/lieven/KDAB/hotspot/build-dev-asan-qt6/3rdparty/libhotspot-perfparser_autogen/6F7ISLN55V/moc_perfheader.cpp:234 #26 0x5d085ec5d91c in PerfHeader::read() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfheader.cpp:122 #27 0x5d085ec2f1b7 in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (PerfHeader::*)()>::call(void (PerfHeader::*)(), PerfHeader*, void**) /usr/include/qt6/QtCore/qobjectdefs_impl.h:145 #28 0x5d085ec2e24a in void QtPrivate::FunctionPointer<void (PerfHeader::*)()>::call<QtPrivate::List<>, void>(void (PerfHeader::*)(), PerfHeader*, void**) /usr/include/qt6/QtCore/qobjectdefs_impl.h:182 #29 0x5d085ec2bf91 in QtPrivate::QCallableObject<void (PerfHeader::*)(), QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) /usr/include/qt6/QtCore/qobjectdefs_impl.h:553 #30 0x75a74298d93e in QObject::event(QEvent*) (/usr/lib/libQt6Core.so.6+0x18d93e) (BuildId: 2dc7cac262eec1f545dffaf6727f87faf910fb09) #31 0x75a742945bc2 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (/usr/lib/libQt6Core.so.6+0x145bc2) (BuildId: 2dc7cac262eec1f545dffaf6727f87faf910fb09) #32 0x75a742945faa in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (/usr/lib/libQt6Core.so.6+0x145faa) (BuildId: 2dc7cac262eec1f545dffaf6727f87faf910fb09) #33 0x75a742babe4b (/usr/lib/libQt6Core.so.6+0x3abe4b) (BuildId: 2dc7cac262eec1f545dffaf6727f87faf910fb09) #34 0x75a740d13558 (/usr/lib/libglib-2.0.so.0+0x5d558) (BuildId: 7b781c8d1a6e2161838c5d8f3bd797797c132753) #35 0x75a740d76156 (/usr/lib/libglib-2.0.so.0+0xc0156) (BuildId: 7b781c8d1a6e2161838c5d8f3bd797797c132753) #36 0x75a740d12a54 in g_main_context_iteration (/usr/lib/libglib-2.0.so.0+0x5ca54) (BuildId: 7b781c8d1a6e2161838c5d8f3bd797797c132753) #37 0x75a742ba985c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (/usr/lib/libQt6Core.so.6+0x3a985c) (BuildId: 2dc7cac262eec1f545dffaf6727f87faf910fb09) #38 0x75a742950105 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (/usr/lib/libQt6Core.so.6+0x150105) (BuildId: 2dc7cac262eec1f545dffaf6727f87faf910fb09) #39 0x75a74294a27c in QCoreApplication::exec() (/usr/lib/libQt6Core.so.6+0x14a27c) (BuildId: 2dc7cac262eec1f545dffaf6727f87faf910fb09) #40 0x5d085ec04e44 in main /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/main.cpp:481 #41 0x75a741a34e07 (/usr/lib/libc.so.6+0x25e07) (BuildId: 98b3d8e0b8c534c769cb871c438b4f8f3a8e4bf3) #42 0x75a741a34ecb in __libc_start_main (/usr/lib/libc.so.6+0x25ecb) (BuildId: 98b3d8e0b8c534c769cb871c438b4f8f3a8e4bf3) #43 0x5d085ebf4b64 in _start (/home/lieven/KDAB/hotspot/build-dev-asan-qt6/libexec/hotspot-perfparser+0x72db64) (BuildId: 580374afdfc7f3994c76369459f6848384c3c771) 0x51b000035c68 is located 1512 bytes inside of 1536-byte region [0x51b000035680,0x51b000035c80) freed by thread T0 here: #0 0x75a7430ff22a in operator delete[](void*) /usr/src/debug/gcc/gcc/libsanitizer/asan/asan_new_delete.cpp:155 #1 0x5d085ef2c5af in QHashPrivate::Span<QHashPrivate::Node<unsigned long, QByteArray> >::addStorage() /usr/include/qt6/QtCore/qhash.h:409 #2 0x5d085ef240f5 in QHashPrivate::Span<QHashPrivate::Node<unsigned long, QByteArray> >::insert(unsigned long) /usr/include/qt6/QtCore/qhash.h:283 #3 0x5d085ef1d324 in QHashPrivate::Data<QHashPrivate::Node<unsigned long, QByteArray> >::Bucket::insert() const /usr/include/qt6/QtCore/qhash.h:511 #4 0x5d085ef18c64 in QHashPrivate::Data<QHashPrivate::Node<unsigned long, QByteArray> >::findOrInsert(unsigned long const&) /usr/include/qt6/QtCore/qhash.h:728 #5 0x5d085ef1551a in QHash<unsigned long, QByteArray>::operator[](unsigned long const&) /usr/include/qt6/QtCore/qhash.h:1064 #6 0x5d085ef08e30 in prependScopeNames(QByteArray&, Dwarf_Die*, QHash<unsigned long, QByteArray>&) /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfdwarfdiecache.cpp:204 #7 0x5d085ef0965b in qualifiedDieName(Dwarf_Die*, QHash<unsigned long, QByteArray>&) /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfdwarfdiecache.cpp:229 #8 0x5d085ef0c9b8 in CuDieRangeMapping::dieName(Dwarf_Die*) /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfdwarfdiecache.cpp:364 #9 0x5d085ee36e7c in operator() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfsymboltable.cpp:768 #10 0x5d085ee39eea in PerfSymbolTable::lookupFrame(unsigned long, bool, bool*) /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfsymboltable.cpp:774 #11 0x5d085ed06ec5 in frameCallback /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfunwind.cpp:541 #12 0x75a7437f7b08 in dwfl_thread_getframes (/usr/lib/libdw.so.1+0x5bb08) (BuildId: 9b3f42d0dd4107f1cd947702b04157dad2a9069a) #13 0x75a7437f2eba (/usr/lib/libdw.so.1+0x56eba) (BuildId: 9b3f42d0dd4107f1cd947702b04157dad2a9069a) #14 0x75a7437f3f2b in dwfl_getthreads (/usr/lib/libdw.so.1+0x57f2b) (BuildId: 9b3f42d0dd4107f1cd947702b04157dad2a9069a) #15 0x75a7437f7e81 in dwfl_getthread_frames (/usr/lib/libdw.so.1+0x5be81) (BuildId: 9b3f42d0dd4107f1cd947702b04157dad2a9069a) #16 0x5d085ed07b21 in PerfUnwind::unwindStack() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfunwind.cpp:557 #17 0x5d085ed0d129 in PerfUnwind::analyze(PerfRecordSample const&) /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfunwind.cpp:744 #18 0x5d085ed1b65f in PerfUnwind::flushEventBuffer(unsigned int) /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfunwind.cpp:1115 #19 0x5d085ed164b1 in PerfUnwind::finishedRound() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfunwind.cpp:976 #20 0x5d085ecc2fe8 in PerfData::processEvents(QDataStream&) /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfdata.cpp:243 #21 0x5d085eccbdc2 in PerfData::doRead() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfdata.cpp:414 #22 0x5d085eccd6f3 in PerfData::read() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfdata.cpp:431 #23 0x5d085ebfa511 in operator() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/main.cpp:383 #24 0x5d085ebfd5c6 in operator() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/main.cpp:452 #25 0x5d085ec0b9b9 in call /usr/include/qt6/QtCore/qobjectdefs_impl.h:137 #26 0x5d085ec0b121 in call<QtPrivate::List<>, void> /usr/include/qt6/QtCore/qobjectdefs_impl.h:345 #27 0x5d085ec0aa1e in impl /usr/include/qt6/QtCore/qobjectdefs_impl.h:555 #28 0x75a7429a3456 (/usr/lib/libQt6Core.so.6+0x1a3456) (BuildId: 2dc7cac262eec1f545dffaf6727f87faf910fb09) #29 0x5d085ec33520 in PerfHeader::finished() /home/lieven/KDAB/hotspot/build-dev-asan-qt6/3rdparty/libhotspot-perfparser_autogen/6F7ISLN55V/moc_perfheader.cpp:234 previously allocated by thread T0 here: #0 0x75a7430fe682 in operator new[](unsigned long) /usr/src/debug/gcc/gcc/libsanitizer/asan/asan_new_delete.cpp:98 #1 0x5d085ef2c181 in QHashPrivate::Span<QHashPrivate::Node<unsigned long, QByteArray> >::addStorage() /usr/include/qt6/QtCore/qhash.h:394 #2 0x5d085ef240f5 in QHashPrivate::Span<QHashPrivate::Node<unsigned long, QByteArray> >::insert(unsigned long) /usr/include/qt6/QtCore/qhash.h:283 #3 0x5d085ef1d324 in QHashPrivate::Data<QHashPrivate::Node<unsigned long, QByteArray> >::Bucket::insert() const /usr/include/qt6/QtCore/qhash.h:511 #4 0x5d085ef18c64 in QHashPrivate::Data<QHashPrivate::Node<unsigned long, QByteArray> >::findOrInsert(unsigned long const&) /usr/include/qt6/QtCore/qhash.h:728 #5 0x5d085ef1551a in QHash<unsigned long, QByteArray>::operator[](unsigned long const&) /usr/include/qt6/QtCore/qhash.h:1064 #6 0x5d085ef0c883 in CuDieRangeMapping::dieName(Dwarf_Die*) /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfdwarfdiecache.cpp:362 #7 0x5d085ee36e7c in operator() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfsymboltable.cpp:768 #8 0x5d085ee39eea in PerfSymbolTable::lookupFrame(unsigned long, bool, bool*) /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfsymboltable.cpp:774 #9 0x5d085ed06ec5 in frameCallback /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfunwind.cpp:541 #10 0x75a7437f7b08 in dwfl_thread_getframes (/usr/lib/libdw.so.1+0x5bb08) (BuildId: 9b3f42d0dd4107f1cd947702b04157dad2a9069a) #11 0x75a7437f2eba (/usr/lib/libdw.so.1+0x56eba) (BuildId: 9b3f42d0dd4107f1cd947702b04157dad2a9069a) #12 0x75a7437f3f2b in dwfl_getthreads (/usr/lib/libdw.so.1+0x57f2b) (BuildId: 9b3f42d0dd4107f1cd947702b04157dad2a9069a) #13 0x75a7437f7e81 in dwfl_getthread_frames (/usr/lib/libdw.so.1+0x5be81) (BuildId: 9b3f42d0dd4107f1cd947702b04157dad2a9069a) #14 0x5d085ed07b21 in PerfUnwind::unwindStack() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfunwind.cpp:557 #15 0x5d085ed0d129 in PerfUnwind::analyze(PerfRecordSample const&) /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfunwind.cpp:744 #16 0x5d085ed1b65f in PerfUnwind::flushEventBuffer(unsigned int) /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfunwind.cpp:1115 #17 0x5d085ed164b1 in PerfUnwind::finishedRound() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfunwind.cpp:976 #18 0x5d085ecc2fe8 in PerfData::processEvents(QDataStream&) /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfdata.cpp:243 #19 0x5d085eccbdc2 in PerfData::doRead() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfdata.cpp:414 #20 0x5d085eccd6f3 in PerfData::read() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfdata.cpp:431 #21 0x5d085ebfa511 in operator() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/main.cpp:383 #22 0x5d085ebfd5c6 in operator() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/main.cpp:452 #23 0x5d085ec0b9b9 in call /usr/include/qt6/QtCore/qobjectdefs_impl.h:137 #24 0x5d085ec0b121 in call<QtPrivate::List<>, void> /usr/include/qt6/QtCore/qobjectdefs_impl.h:345 #25 0x5d085ec0aa1e in impl /usr/include/qt6/QtCore/qobjectdefs_impl.h:555 #26 0x75a7429a3456 (/usr/lib/libQt6Core.so.6+0x1a3456) (BuildId: 2dc7cac262eec1f545dffaf6727f87faf910fb09) #27 0x5d085ec33520 in PerfHeader::finished() /home/lieven/KDAB/hotspot/build-dev-asan-qt6/3rdparty/libhotspot-perfparser_autogen/6F7ISLN55V/moc_perfheader.cpp:234 #28 0x5d085ec5d91c in PerfHeader::read() /home/lieven/KDAB/hotspot/3rdparty/perfparser/app/perfheader.cpp:122 #29 0x5d085ec2f1b7 in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (PerfHeader::*)()>::call(void (PerfHeader::*)(), PerfHeader*, void**) /usr/include/qt6/QtCore/qobjectdefs_impl.h:145 SUMMARY: AddressSanitizer: heap-use-after-free /usr/include/qt6/QtCore/qswap.h:31 in void qt_ptr_swap<QTypedArrayData<char> >(QTypedArrayData<char>*&, QTypedArrayData<char>*&) Shadow bytes around the buggy address: 0x51b000035980: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd 0x51b000035a00: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd 0x51b000035a80: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd 0x51b000035b00: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd 0x51b000035b80: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd =>0x51b000035c00: fd fd fd fd fd fd fd fd fd fd fd fd fd[fd]fd fd 0x51b000035c80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x51b000035d00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x51b000035d80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x51b000035e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x51b000035e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Shadow byte legend (one shadow byte represents 8 application bytes): Addressable: 00 Partially addressable: 01 02 03 04 05 06 07 Heap left redzone: fa Freed heap region: fd Stack left redzone: f1 Stack mid redzone: f2 Stack right redzone: f3 Stack after return: f5 Stack use after scope: f8 Global redzone: f9 Global init order: f6 Poisoned by user: f7 Container overflow: fc Array cookie: ac Intra object redzone: bb ASan internal: fe Left alloca redzone: ca Right alloca redzone: cb ==138723==ABORTING

catskul and others added 6 commits May 15, 2020 18:52

fix: match types exactly to resolve qcompare link error

3eb0090

feat: sync PerfEventType with linux 5.6 perf_user_event_type and and …

fd1ac0e

…perf_event_type

Don't try to unbreak non-broken feature data

a5edc63

Apparently android's simpleperf doesn't contain the HOSTNAME feature. Yet the data is still valid - trying to unbreak it would actually break it for real. Fixes: KDAB/hotspot#224 Change-Id: I0ed694a79fc731728edee8f6e2e3ba52717e2ea4

Revert "Fix GCC warning"

18c0e89

This triggers an infinite loop for me. This reverts commit 33ad832.

Fix for bug #241 Perfparser/Hotspot cannot unwind the stack for fork(…

0558f2d

…) of created processes

milianw suggested changes Jun 5, 2020

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milianw force-pushed the hotspot branch 4 times, most recently from 86a7162 to c3be6e3 Compare June 12, 2020 17:06

milianw closed this Jun 12, 2020

lievenhey mentioned this pull request Oct 11, 2024

feat: fix crash in qt6 #35

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Fix for bug #241 Perfparser/Hotspot cannot unwind the stack for fork(…#10

Fix for bug #241 Perfparser/Hotspot cannot unwind the stack for fork(…#10
vtoropov wants to merge 6 commits intoKDAB:hotspotfrom
vtoropov:hotspot

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