https://bugs.kde.org/show_bug.cgi?id=474491
Bug ID: 474491
Summary: isOnCifsMount does not check for nullptr
Classification: Frameworks and Libraries
Product: frameworks-kio
Version: 5.110.0
Platform: Ubuntu
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kio-bugs-n...@kde.org
Reporter: m...@mwsys.mine.bz
CC: kdelibs-b...@kde.org
Target Milestone: ---
SUMMARY
***
I get a segfault triggered in kio_file gdb reveals this stacktrace:
#0 KMountPoint::mountType() const (this=0x0) at
/usr/src/kio-5.110.0-0ubuntu1~ubuntu23.04~ppa1/src/core/kmountpoint.cpp:411
#1 0x00007fff9c114f24 in isOnCifsMount (filePath=...) at
/usr/include/x86_64-linux-gnu/qt5/QtCore/qshareddata.h:161
#2 FileProtocol::copy(QUrl const&, QUrl const&, int, QFlags<KIO::JobFlag>)
(this=0x7fff60000fd0, srcUrl=<optimized out>, destUrl=<optimized out>,
_mode=-1, _flags=...) at
/usr/src/kio-5.110.0-0ubuntu1~ubuntu23.04~ppa1/src/ioslaves/file/file_unix.cpp:743
#3 0x00007ffff36ec946 in KIO::SlaveBase::dispatch(int, QByteArray const&)
(this=0x7fff60000fe0, command=<optimized out>, data=...) at
/usr/src/kio-5.110.0-0ubuntu1~ubuntu23.04~ppa1/src/core/slavebase.cpp:1364
#4 0x00007ffff36ed516 in KIO::SlaveBase::dispatchLoop() (this=0x7fff60000fe0)
at /usr/src/kio-5.110.0-0ubuntu1~ubuntu23.04~ppa1/src/core/slavebase.cpp:342
#5 0x00007ffff3789d32 in KIO::WorkerThread::run() (this=0x555557106e20) at
/usr/src/kio-5.110.0-0ubuntu1~ubuntu23.04~ppa1/src/core/workerthread.cpp:62
#6 0x00007ffff60cccc7 in QThreadPrivate::start(void*) (arg=0x555557106e20) at
thread/qthread_unix.cpp:331
#7 0x00007ffff588f18a in start_thread (arg=<optimized out>) at
./nptl/pthread_create.c:444
#8 0x00007ffff591dbd0 in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:81
this is triggered by file_unix.cpp in isOnCifsMount.
KMountPoint::List::findByPath obviosly may return a nullptr
***
STEPS TO REPRODUCE
open kdevelop (23.04.3)
open project
OBSERVED RESULT
see immediate crash
the crashing operation is
kf.kio.workers.file: copy() QUrl("file:///<valid path>.kdev4") to
QUrl("file:///tmp/kdevelop.IqlheG") mode= -1
EXPECTED RESULT
no crash
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Ubuntu 23.04 + kubuntu-ppa
KDE Plasma Version: 5.27.8
KDE Frameworks Version: 5.110.0
Qt Version: 5.15.8
ADDITIONAL INFORMATION
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