https://bugs.kde.org/show_bug.cgi?id=444055
Bug ID: 444055
Summary: Locking related crash on assert in debug mode (crash
in ParsingEnvironmentFile::url, called from
Python::ExpressionVisitor::visitCall)
Product: kdev-python
Version: git master
Platform: Compiled Sources
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Language support
Assignee: m...@svenbrauch.de
Reporter: jonathan.ver...@matfyz.cz
Target Milestone: ---
Created attachment 142631
--> https://bugs.kde.org/attachment.cgi?id=142631&action=edit
DrKonqui crash backtrace.
When running a debug build, I get occasional crashes on asserts in
ENSURE_READER_LOCKED. A sample trace is attached, the relevant part
is the following:
Thread 40 (Thread 0x7faf37fff700 (LWP 254148)):
[KCrash Handler]
#4 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#5 0x00007fb014a99859 in __GI_abort () at abort.c:79
#6 0x00007fb014edcbd7 in qt_message_fatal (context=..., message=<synthetic
pointer>...) at global/qlogging.cpp:1914
#7 QMessageLogger::fatal(char const*, ...) const
(this=this@entry=0x7faf37ffb6e0, msg=msg@entry=0x7fb0151e7ea0 "ASSERT: \"%s\"
in file %s, line %d") at global/qlogging.cpp:893
#8 0x00007fb014edbfe3 in qt_assert(char const*, char const*, int)
(assertion=<optimized out>, file=<optimized out>, line=<optimized out>) at
../../include/QtCore/../../src/corelib/global/qlogging.h:90
#9 0x00007fb0139f88f4 in KDevelop::ParsingEnvironmentFile::url() const
(this=0x7faf2460d100) at
/home/jonathan/zdroj/clones/kdevelop/kdevplatform/language/duchain/parsingenvironment.cpp:83
#10 0x00007fb0139502d9 in KDevelop::DUChainPrivate::loadInformation(unsigned
int) (this=0x7fb014075420 <KDevelop::(anonymous
namespace)::Q_QGS_sdDUChainPrivate::innerFunction()::holder>,
topContextIndex=2507) at
/home/jonathan/zdroj/clones/kdevelop/kdevplatform/language/duchain/duchain.cpp:1040
#11 0x00007fb01394e472 in KDevelop::DUChainPrivate::loadChain(unsigned int,
QSet<unsigned int>&) (this=0x7fb014075420 <KDevelop::(anonymous
namespace)::Q_QGS_sdDUChainPrivate::innerFunction()::holder>, index=2507,
loaded=...) at
/home/jonathan/zdroj/clones/kdevelop/kdevplatform/language/duchain/duchain.cpp:636
#12 0x00007fb013947c01 in KDevelop::DUChain::loadChain(unsigned int)
(this=0x559a18e38450, index=2507) at
/home/jonathan/zdroj/clones/kdevelop/kdevplatform/language/duchain/duchain.cpp:1413
#13 0x00007fb0139a0117 in KDevelop::DUChain::chainForIndex(unsigned int)
(this=0x559a18e38450, index=2507) at
/home/jonathan/zdroj/clones/kdevelop/kdevplatform/language/duchain/duchain.h:193
#14 0x00007fb0139a0535 in KDevelop::IndexedDeclaration::declaration() const
(this=0x7faf1c087fa6) at
/home/jonathan/zdroj/clones/kdevelop/kdevplatform/language/duchain/indexeddeclaration.cpp:52
#15 0x00007fb013a12c83 in
KDevelop::DeclarationId::declaration(KDevelop::TopDUContext const*, bool) const
(this=0x7faf1c087fa6, top=0x7faf241c2430, instantiateIfRequired=true) at
/home/jonathan/zdroj/clones/kdevelop/kdevplatform/language/duchain/declarationid.cpp:198
#16 0x00007fb013a66d88 in
KDevelop::IdentifiedType::declaration(KDevelop::TopDUContext const*) const
(this=0x7faf24614378, top=0x7faf241c2430) at
/home/jonathan/zdroj/clones/kdevelop/kdevplatform/language/duchain/types/identifiedtype.cpp:75
#17 0x00007faf3c1854e8 in
Python::ExpressionVisitor::visitCall(Python::CallAst*)
The code asserts, since the call to `KDevelop::IdentifiedType::declaration`
requires the DUChain to be at least read locked.
(However, the ENSURE_READER_LOCKED macro only appears deeper in the call chain
in `KDevelop::ParsingEnvironmentFile::url`)
SOFTWARE/OS VERSIONS
Note that kdevelop is actually not running master, but the
https://invent.kde.org/kiloalphaindia/kdevelop/-/tree/document-queueing-performance
branch. This
should be irrelevant. Kdev-python is actually on commit 4c4fa036e07, however
the changes since master did not touch any code.
Operating System: KDE neon 5.23
KDE Plasma Version: 5.23.0
KDE Frameworks Version: 5.87.0
Qt Version: 5.15.3
Kernel Version: 5.11.0-37-generic (64-bit)
Graphics Platform: X11
Processors: 16 × AMD Ryzen 7 2700X Eight-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: Radeon RX 580 Series
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