*** Bug 503929 has been marked as a duplicate of this bug. ***

(In reply to Roke Julian Lockhart Beedell from comment #0)

> Qt Version: 6.9.0  
> Frameworks Version: 6.13.0  
> Operating System: Linux 6.14.5-300.fc42.x86_64 x86_64  
> Windowing System: Wayland  
> Distribution: "Fedora Linux 42 (KDE Plasma Desktop Edition)"

The full `kinfo` output is:

> Operating System: Fedora Linux 42  
> KDE Plasma Version: 6.3.4  
> KDE Frameworks Version: 6.13.0  
> Qt Version: 6.9.0  
> Kernel Version: 6.14.5-300.fc42.x86_64 (64-bit)  
> Graphics Platform: Wayland  
> Processors: 6 × AMD Ryzen 5 7600X 6-Core Processor  
> Memory: 7.7 GiB of RAM  
> Graphics Processor: llvmpipe  
> Manufacturer: QEMU  
> Product Name: Standard PC (Q35 + ICH9, 2009)  
> System Version: pc-q35-9.2

(In reply to Roke Julian Lockhart Beedell from comment #2)

As confirmed at https://bugzilla.redhat.com/show_bug.cgi?id=2365102#c13, this also reproduced on my host:

> Operating System: Fedora Linux 42  
> KDE Plasma Version: 6.3.4  
> KDE Frameworks Version: 6.13.0  
> Qt Version: 6.9.0  
> Kernel Version: 6.14.5-300.fc42.x86_64 (64-bit)  
> Graphics Platform: Wayland  
> Processors: 12 × AMD Ryzen 5 7600X 6-Core Processor  
> Memory: 30.4 GiB of RAM

On that host, putting the KCrash in `drkonqi-coredump-gui` through `gdb`'s `bt full` with `debuginfod` `-y`'d, I see:

> [Thread debugging using libthread_db enabled]
> Using host libthread_db library "/lib64/libthread_db.so.1".
> Core was generated by `/usr/libexec/kf6/kioworker /usr/lib64/qt6/plugins/kf6/kio/kio_ftp.so ftp '' local:/run/user/1000/kiofuseuAnuUJ.2.kioworker.socket'.
> Program terminated with signal SIGSEGV, Segmentation fault.
> #0  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=11, no_tid=no_tid@entry=0) at pthread_kill.c:44
> 44            return INTERNAL_SYSCALL_ERROR_P (ret) ? INTERNAL_SYSCALL_ERRNO (ret) : 0;
> [Current thread is 1 (Thread 0x7f881fceb380 (LWP 49817))]
> Function(s) ^std::(move|forward|as_const|(__)?addressof) will be skipped when stepping.
> Function(s) ^std::(shared|unique)_ptr<.*>::(get|operator) will be skipped when stepping.
> Function(s) ^std::(basic_string|vector|array|deque|(forward_)?list|(unordered_|flat_)?(multi)?(map|set)|span)<.*>::(c?r?(begin|end)|front|back|data|size|empty) will be skipped when stepping.
> Function(s) ^std::(basic_string|vector|array|deque|span)<.*>::operator.] will be skipped when stepping.
> (gdb) bt full
> #0  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=11, no_tid=no_tid@entry=0) at pthread_kill.c:44
>         tid = <optimized out>
>         ret = 0
>         pd = <optimized out>
>         old_mask = {__val = {0}}
>         ret = <optimized out>
> #1  0x00007f882572c1e3 in __pthread_kill_internal (threadid=<optimized out>, signo=11) at pthread_kill.c:89
> No locals.
> #2  0x00007f88256d2afe in __GI_raise (sig=11) at ../sysdeps/posix/raise.c:26
>         ret = <optimized out>
> #3  0x00007f8824f09ef1 in KCrash::defaultCrashHandler (sig=11) at /usr/src/debug/kf6-kcrash-6.13.0-1.fc42.x86_64/src/kcrash.cpp:605
>         data = {<KCrash::MetadataWriter> = {_vptr.MetadataWriter = 0x7f8824f12808 <vtable for KCrash::Metadata+16>}, argv = {_M_elems = {0x0, 0x7f8824f106ed "--qtversion", 0x5579aa3129f0 "6.9.0", 0x7f8824f10700 "--kdeframeworksversion", 
>               0x7f8824f106f9 "6.13.0", 0x7f8824f10769 "--appname", 0x5579aa313d00 "kioworker", 0x7f8824f10773 "--apppath", 0x5579aa313d70 "/usr/libexec/kf6", 0x7f8824f10780 "--signal", 0x7ffd82564106 "11", 0x7f8824f1078e "--pid", 
>               0x7ffd82564110 "49817", 0x7f8824f10794 "--appversion", 0x5579aa30b9c0 "6.13.0", 0x7f8824f107a1 "--programname", 0x5579a10edcc0 <QByteArray::_empty> "", 0x7f8824f107af "--bugaddress", 0x5579aa311740 "submit@bugs.kde.org", 
>               0x0 <repeats 19 times>}}, argc = 19, m_writer = 0x7ffd825640b0}
>         platformName = {d = {d = 0x0, ptr = 0x0, size = 0}, static _empty = 0 '\000'}
>         about = 0x5579aa3122f0
>         argv = 0x7ffd82564138
>         ini = {<KCrash::MetadataWriter> = {_vptr.MetadataWriter = 0x7f8824f12838 <vtable for KCrash::MetadataINIWriter+16>}, writable = false, fd = 9}
>         sigtxt = "11\000\000\000\000\000\000\000"
>         pidtxt = "49817\000\377\377\240AV\202\375\177\000\000\000\000\000"
>         argc = <optimized out>
>         crashRecursionCounter = 2
> #4  <signal handler called>
> No locals.
> #5  0x00007f88250b6021 in QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> >::get (this=0x8) at /usr/src/debug/qt6-qtbase-6.9.0-2.fc42.x86_64/src/corelib/tools/qscopedpointer.h:112
> No locals.
> #6  qGetPtrHelper<QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> > > (ptr=...) at /usr/src/debug/qt6-qtbase-6.9.0-2.fc42.x86_64/src/corelib/global/qtclasshelpermacros.h:137
> No locals.
> #7  QIODevice::d_func (this=0x0) at /usr/src/debug/qt6-qtbase-6.9.0-2.fc42.x86_64/src/corelib/io/qiodevice.h:146
> No locals.
> --Type <RET> for more, q to quit, c to continue without paging--c
> #8  QIODevice::write (this=0x0, data=...) at /usr/src/debug/qt6-qtbase-6.9.0-2.fc42.x86_64/src/corelib/io/qiodevice.cpp:1867
>         d = <optimized out>
>         ret = <optimized out>
> #9  0x00007f8825a396e0 in FtpInternal::ftpSendCmd (this=0x5579aa311b80, cmd=..., maxretries=1) at /usr/src/debug/kf6-kio-6.13.0-2.fc42.x86_64/src/kioworkers/ftp/ftp.cpp:721
>         isPassCmd = false
>         buf = {d = {d = 0x5579aa52b680, ptr = 0x5579aa52b690 "cwd /\r\n", size = 7}, static _empty = 0 '\000'}
>         num = <optimized out>
> #10 0x00007f8825a45800 in FtpInternal::ftpFolder (this=0x5579aa311b80, path=...) at /usr/src/debug/kf6-kio-6.13.0-2.fc42.x86_64/src/kioworkers/ftp/ftp.cpp:2200
>         newPath = {d = {d = 0x5579aa697d20, ptr = 0x5579aa697d30 u"/", size = 1}, static _empty = 0 u'\000'}
>         iLen = <optimized out>
>         tmp = {d = {d = 0x5579aa68cee0, ptr = 0x5579aa68cef0 "cwd /", size = 5}, static _empty = 0 '\000'}
> #11 0x00007f8825a3ffe9 in FtpInternal::stat (this=0x5579aa311b80, url=...) at /usr/src/debug/kf6-kio-6.13.0-2.fc42.x86_64/src/kioworkers/ftp/ftp.cpp:1378
>         result = {d = std::unique_ptr<KIO::WorkerResultPrivate> = {get() = 0x5579aa3bcbf0}}
>         path = {d = {d = 0x5579aa528c50, ptr = 0x5579aa528c60 u"/@{'Name'='Personal'}#.dir", size = 26}, static _empty = 0 u'\000'}
>         tempurl = {d = 0x5579aa3bc450}
>         listarg = {d = {d = 0x5579aa313b80, ptr = 0x5579aa313b90 u"@{'Name'='Personal'}#.dir", size = 25}, static _empty = 0 u'\000'}
>         parentDir = {d = {d = 0x5579aa697d20, ptr = 0x5579aa697d30 u"/", size = 1}, static _empty = 0 u'\000'}
>         filename = {d = {d = 0x5579aa313b80, ptr = 0x5579aa313b90 u"@{'Name'='Personal'}#.dir", size = 25}, static _empty = 0 u'\000'}
>         isDir = false
>         sDetails = {d = {d = 0x5579aa52bf00, ptr = 0x5579aa52bf10 u"31", size = 2}, static _empty = 0 u'\000'}
>         details = <optimized out>
>         bFound = <optimized out>
>         linkURL = {d = 0x7ffd82565180}
>         ftpEnt = {name = {d = {d = 0x0, ptr = 0x0, size = 0}, static _empty = 0 u'\000'}, owner = {d = {d = 0x7f88250df802 <QUrlPrivate::parse(QString const&, QUrl::ParsingMode)+1954>, ptr = 0xffffffffffffffff u"", size = 56}, 
>             static _empty = 0 u'\000'}, group = {d = {d = 0x20, ptr = 0x7ffd82565260 u"ﺀꩣ啹", size = 140724603453440}, static _empty = 0 u'\000'}, link = {d = {d = 0x38, ptr = 0xffffffffffffffff u"", size = 140726790148832}, 
>             static _empty = 0 u'\000'}, size = 0, type = 0, access = 0, date = {d = {static CanBeSmall = true, d = 0x0, data = {status = 0, msecs = 0}}}}
>         ftpValidateEntList = {<QListSpecialMethods<FtpEntry>> = {<QListSpecialMethodsBase<FtpEntry>> = {<No data fields>}, <No data fields>}, d = {d = 0x38, ptr = 0xffffffffffffffff, size = 140726790148592}}
> #12 0x00007f8825a435b6 in Ftp::stat (this=<optimized out>, url=...) at /usr/include/c++/15/bits/unique_ptr.h:193
> No locals.
> #13 0x00007f8825908190 in KIO::WorkerSlaveBaseBridge::stat (this=0x5579aa2e1df0, url=...) at /usr/src/debug/kf6-kio-6.13.0-2.fc42.x86_64/src/core/workerbase_p.h:111
> No locals.
> #14 0x00007f8825904f0e in KIO::SlaveBase::dispatch (this=0x5579aa2e1df0, command=69, data=...) at /usr/src/debug/kf6-kio-6.13.0-2.fc42.x86_64/src/core/slavebase.cpp:1221
>         stream = {<QIODeviceBase> = {<No data fields>}, d = std::unique_ptr<QDataStreamPrivate> = {get() = 0x0}, dev = 0x5579aa68af80, owndev = true, noswap = false, fpPrecision = 1 '\001', q_status = 0 '\000', byteorder = QDataStream::BigEndian, 
>           ver = 22, transactionDepth = 0, static NullCode = 4294967295, static ExtendedSize = 4294967294}
>         url = {d = 0x5579aa30fb70}
>         i = -2108271600
> #15 0x00007f8825902b2e in KIO::SlaveBase::dispatchLoop() [clone .constprop.0] (this=<optimized out>) at /usr/src/debug/kf6-kio-6.13.0-2.fc42.x86_64/src/core/slavebase.cpp:363
>         cmd = 69
>         data = {d = {d = 0x5579aa5296e0, ptr = 0x5579aa5296f0 "", size = 60}, static _empty = 0 '\000'}
>         ms = <optimized out>
>         ret = <optimized out>
> #16 0x00007f8825905a2d in KIO::WorkerBase::dispatchLoop (this=<optimized out>) at /usr/src/debug/kf6-kio-6.13.0-2.fc42.x86_64/src/core/workerbase.cpp:27
> No locals.
> #17 0x00007f8825a4330f in kdemain (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kf6-kio-6.13.0-2.fc42.x86_64/src/kioworkers/ftp/ftp.cpp:177
>         app = {<QObject> = {_vptr.QObject = 0x7f8825690ae0 <vtable for QCoreApplication+16>, static staticMetaObject = {d = {superdata = {direct = 0x0}, 
>                 stringdata = 0x7f882550d210 <QObject::qt_staticMetaObjectStaticContent<(anonymous namespace)::qt_meta_tag_ZN7QObjectE_t>+272>, 
>                 data = 0x7f882550d100 <QObject::qt_staticMetaObjectStaticContent<(anonymous namespace)::qt_meta_tag_ZN7QObjectE_t>>, static_metacall = 0x7f882515cfe0 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, 
>                 relatedMetaObjects = 0x0, metaTypes = 0x7f8825692ae0 <QObject::qt_staticMetaObjectRelocatingContent<(anonymous namespace)::qt_meta_tag_ZN7QObjectE_t>>, extradata = 0x0}}, d_ptr = {d = 0x5579aa30fd20}}, static staticMetaObject = {
>             d = {superdata = {direct = 0x7f882568cc40 <QObject::staticMetaObject>}, stringdata = 0x7f8825508e88 <QCoreApplication::qt_staticMetaObjectStaticContent<(anonymous namespace)::qt_meta_tag_ZN16QCoreApplicationE_t>+392>, 
>               data = 0x7f8825508d00 <QCoreApplication::qt_staticMetaObjectStaticContent<(anonymous namespace)::qt_meta_tag_ZN16QCoreApplicationE_t>>, 
>               static_metacall = 0x7f88250ffa40 <QCoreApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, 
>               metaTypes = 0x7f8825690a00 <QCoreApplication::qt_staticMetaObjectRelocatingContent<(anonymous namespace)::qt_meta_tag_ZN16QCoreApplicationE_t>>, extradata = 0x0}}, static self = 0x7ffd82565530}
>         worker = {<KIO::WorkerBase> = {_vptr.WorkerBase = 0x7f8825a52388 <vtable for Ftp+16>, d = std::unique_ptr<KIO::WorkerBasePrivate> = {get() = 0x5579aa2e1df0}}, d = std::unique_ptr<FtpInternal> = {get() = 0x5579aa311b80}}
> #18 0x00005579a10eb82a in main (argc=5, argv=0x7ffd82565898) at /usr/include/qt6/QtCore/qvarlengtharray.h:89
>         libname = {d = {d = 0x5579aa30ce40, ptr = 0x5579aa30ce50 u"/usr/lib64/qt6/plugins/kf6/kio/kio_ftp.so", size = 41}, static _empty = 0 u'\000'}
>         libpath = {d = {d = 0x5579aa30ceb0, ptr = 0x5579aa30cec0 u"/usr/lib64/qt6/plugins/kf6/kio/kio_ftp.so", size = 41}, static _empty = 0 u'\000'}
>         lib = {<QObject> = {_vptr.QObject = 0x7f8825698dc0 <vtable for QLibrary+16>, static staticMetaObject = {d = {superdata = {direct = 0x0}, 
>                 stringdata = 0x7f882550d210 <QObject::qt_staticMetaObjectStaticContent<(anonymous namespace)::qt_meta_tag_ZN7QObjectE_t>+272>, 
>                 data = 0x7f882550d100 <QObject::qt_staticMetaObjectStaticContent<(anonymous namespace)::qt_meta_tag_ZN7QObjectE_t>>, static_metacall = 0x7f882515cfe0 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, 
>                 relatedMetaObjects = 0x0, metaTypes = 0x7f8825692ae0 <QObject::qt_staticMetaObjectRelocatingContent<(anonymous namespace)::qt_meta_tag_ZN7QObjectE_t>>, extradata = 0x0}}, d_ptr = {d = 0x5579aa30cf20}}, static staticMetaObject = {
>             d = {superdata = {direct = 0x7f882568cc40 <QObject::staticMetaObject>}, stringdata = 0x7f88255d503c <QLibrary::qt_staticMetaObjectStaticContent<(anonymous namespace)::qt_meta_tag_ZN8QLibraryE_t>+220>, 
>               data = 0x7f88255d4f60 <QLibrary::qt_staticMetaObjectStaticContent<(anonymous namespace)::qt_meta_tag_ZN8QLibraryE_t>>, static_metacall = 0x7f88253f9990 <QLibrary::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, 
>               relatedMetaObjects = 0x0, metaTypes = 0x7f8825698e60 <QLibrary::qt_staticMetaObjectRelocatingContent<(anonymous namespace)::qt_meta_tag_ZN8QLibraryE_t>>, extradata = 0x0}}, d = {d = 93981034730401}}
>         sym = 0x7f8825a430b0 <kdemain(int, char**)>
>         workerDebugWait = {d = {d = 0x0, ptr = 0x0, size = 0}, static _empty = 0 '\000'}
>         func = 0x7f8825a430b0 <kdemain(int, char**)>
>         newArgc = 4
>         newArgv = {<QVLABase<char*>> = {<QVLABaseBase> = {a = 5, s = 4, ptr = 0x7ffd82565708}, <No data fields>}, <QVLAStorage<8, 8, 5>> = {
>             array = "\016uV\202\375\177\000\000SuV\202\375\177\000\000WuV\202\375\177\000\000XuV\202\375\177\000\000M<\301$\210\177\000"}, <No data fields>}

*** Bug 508155 has been marked as a duplicate of this bug. ***

*** Bug 469411 has been marked as a duplicate of this bug. ***