https://bugs.kde.org/show_bug.cgi?id=508155
Bug ID: 508155
Summary: kioworker crash when FTP server dies
Classification: Frameworks and Libraries
Product: frameworks-kio
Version First 6.17.0
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Keywords: drkonqi
Severity: crash
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: ---
Application: kioworker (6.17.0)
ApplicationNotResponding [ANR]: false
Qt Version: 6.9.1
Frameworks Version: 6.17.0
Operating System: Linux 6.15.9-arch1-1 x86_64
Windowing System: Wayland
Distribution: "Arch Linux"
DrKonqi: 6.4.3 [CoredumpBackend]
-- Information about the crash:
I'm trying to develop an FTP server (using Rust's unftp) so I started something
locally. I then used Dolphin to connect to the FTP server to have a client to
test with. I created an empty text file and opened it in Neovim. I made changes
and tried to save it, but Neovim told me the file was opened read only
(possibly b/c the FTP is so basic right now) and it didn't allow me save. The
window then weirdly hang so I just closed it.
Then I shut down the FTP server with a simple Ctrl-C which would've abruptly
terminated the connection. This caused the crashreport to appear for kioworker,
and I believe the stack trace shows it's in the FTP code somewhere.
The reporter is unsure if this crash is reproducible.
-- Backtrace:
Application: kioworker (kioworker), signal: Segmentation fault
Content of s_kcrashErrorMessage: std::unique_ptr<char []> = {get() = <optimized
out>}
Downloading separate debug info for /usr/lib/kf6/kioworker...
[New LWP 1149420]
[New LWP 1149421]
Downloading 39.83 M separate debug info for /usr/lib/libKF6KIOCore.so.6...
Downloading 100.87 M separate debug info for /usr/lib/libQt6Core.so.6...
Downloading 6.44 M separate debug info for /usr/lib/libKF6I18n.so.6...
Downloading 10.71 M separate debug info for /usr/lib/libKF6Service.so.6...
Downloading 3.52 M separate debug info for /usr/lib/libKF6AuthCore.so.6...
Downloading 1.10 M separate debug info for /usr/lib/libmount.so.1...
Downloading 2.24 M separate debug info for /usr/lib/libQt6Xml.so.6...
Downloading 8.45 M separate debug info for /usr/lib/libKF6ConfigCore.so.6...
Downloading 19.88 M separate debug info for /usr/lib/libKF6CoreAddons.so.6...
Downloading 19.72 M separate debug info for /usr/lib/libQt6DBus.so.6...
Downloading 22.59 M separate debug info for /usr/lib/libicui18n.so.76...
Downloading 10.53 M separate debug info for /usr/lib/libicuuc.so.76...
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/usr/lib/libdouble-conversion.so.3...
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/usr/lib/libproxy/libpxbackend-1.0.so...
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Downloading 156.17 K separate debug info for /usr/lib/libbz2.so.1.0...
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Downloading 500.82 K separate debug info for /usr/lib/libnghttp3.so.9...
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Downloading 267.86 K separate debug info for /usr/lib/libgmodule-2.0.so.0...
Downloading 1.62 M separate debug info for /usr/lib/libunistring.so.5...
Downloading 1.74 M separate debug info for
/usr/lib/qt6/plugins/kf6/kio/kio_ftp.so...
Downloading 2.67 M separate debug info for
/usr/lib/qt6/plugins/tls/libqcertonlybackend.so...
Downloading 6.88 M separate debug info for
/usr/lib/qt6/plugins/tls/libqopensslbackend.so...
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
Core was generated by `/usr/lib/kf6/kioworker
/usr/lib/qt6/plugins/kf6/kio/kio_ftp.so ftp ''
local:/run/user/1000/kiofusetucRvG.1.kioworker.socket'.
Program terminated with signal SIGSEGV, Segmentation fault.
Downloading 4.48 K source file
/usr/src/debug/glibc/glibc/nptl/pthread_kill.c...
#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 0x7f0994bcaa00 (LWP 1149420))]
Cannot QML trace cores :(
Downloading 86.28 K source file
/usr/src/debug/kio/kio-6.17.0/src/kioworkers/ftp/ftp.cpp...
Downloading 11.77 K source file
/usr/src/debug/kio/kio-6.17.0/src/core/workerbase.cpp...
Downloading 45.11 K source file
/usr/src/debug/kio/kio-6.17.0/src/core/slavebase.cpp...
Downloading 5.76 K source file
/usr/src/debug/kio/kio-6.17.0/src/core/workerbase_p.h...
Downloading 73.48 K source file
/usr/src/debug/qt6-base/qtbase/src/corelib/io/qiodevice.cpp...
Downloading 4.02 K source file
/usr/src/debug/qt6-base/qtbase/src/corelib/io/qiodevice.h...
Downloading 7.98 K source file
/usr/src/debug/qt6-base/qtbase/src/corelib/global/qtclasshelpermacros.h...
Downloading 6.15 K source file
/usr/src/debug/qt6-base/qtbase/src/corelib/tools/qscopedpointer.h...
Downloading 2.48 K source file
/usr/src/debug/glibc/glibc/misc/../sysdeps/unix/sysv/linux/x86_64/clone3.S...
Downloading 34.87 K source file
/usr/src/debug/glibc/glibc/nptl/pthread_create.c...
Downloading 34.56 K source file
/usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp...
Downloading 10.02 K source file
/usr/src/debug/qt6-base/qtbase/src/dbus/qdbusconnectionmanager.cpp...
Downloading 41.01 K source file
/usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread.cpp...
Downloading 13.17 K source file
/usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp...
Downloading 17.53 K source file
/usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp...
Downloading 185.96 K source file
/usr/src/debug/glib2/build/../glib/glib/gmain.c...
Downloading 2.27 K source file
/usr/src/debug/glibc/glibc/io/../sysdeps/unix/sysv/linux/ppoll.c...
Downloading 4.24 K source file
/usr/src/debug/glibc/glibc/nptl/cancellation.c...
Downloading 1.79 K source file
/usr/src/debug/glibc/glibc/nptl/../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S...
[Current thread is 1 (Thread 0x7f0994bcaa00 (LWP 1149420))]
Thread 2 (Thread 0x7f09947ff6c0 (LWP 1149421)):
#0 __syscall_cancel_arch () at
../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1 0x00007f0999a931ac in __internal_syscall_cancel (a1=<optimized out>,
a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=a5@entry=8,
a6=a6@entry=0, nr=271) at cancellation.c:49
#2 0x00007f0999a931f4 in __syscall_cancel (a1=<optimized out>, a2=<optimized
out>, a3=<optimized out>, a4=<optimized out>, a5=a5@entry=8, a6=a6@entry=0,
nr=271) at cancellation.c:75
#3 0x00007f0999b0da76 in __GI_ppoll (fds=fds@entry=0x55df97d52080,
nfds=nfds@entry=2, timeout=<optimized out>, timeout@entry=0x0,
sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:42
#4 0x00007f099957ee04 in ppoll (__fds=0x55df97d52080, __nfds=2, __timeout=0x0,
__ss=0x0) at /usr/include/bits/poll2.h:101
#5 g_main_context_poll_unlocked (priority=<optimized out>,
context=0x7f098c000cd0, timeout_usec=<optimized out>, fds=0x55df97d52080,
n_fds=2) at ../glib/glib/gmain.c:4632
#6 g_main_context_iterate_unlocked (context=context@entry=0x7f098c000cd0,
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at
../glib/glib/gmain.c:4309
#7 0x00007f099957eee5 in g_main_context_iteration (context=0x7f098c000cd0,
may_block=1) at ../glib/glib/gmain.c:4379
#8 0x00007f099a23c5e2 in QEventDispatcherGlib::processEvents
(this=0x7f098c000be0, flags=...) at
/usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:399
#9 0x00007f0999f744b6 in QEventLoop::processEvents (this=0x7f09947feaa0,
flags=...) at
/usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:104
#10 QEventLoop::exec (this=0x7f09947feaa0, flags=...) at
/usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:186
#11 0x00007f099a0873c6 in QThread::exec (this=this@entry=0x7f0999730d40
<QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager>
>::instance()::holder>) at
/usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread.cpp:659
#12 0x00007f09996acdae in QDBusConnectionManager::run (this=0x7f0999730d40
<QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager>
>::instance()::holder>) at
/usr/src/debug/qt6-base/qtbase/src/dbus/qdbusconnectionmanager.cpp:144
#13 0x00007f099a11ee69 in operator() (__closure=<optimized out>) at
/usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:434
#14 (anonymous
namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> >
(t=<optimized out>) at
/usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:366
#15 QThreadPrivate::start (arg=0x7f0999730d40
<QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager>
>::instance()::holder>) at
/usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:394
#16 0x00007f0999a969cb in start_thread (arg=<optimized out>) at
pthread_create.c:448
#17 0x00007f0999b1aa4c in __GI___clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Thread 1 (Thread 0x7f0994bcaa00 (LWP 1149420)):
[KCrash Handler]
#5 0x00007f0999f2ec71 in QScopedPointer<QObjectData,
QScopedPointerDeleter<QObjectData> >::get (this=0x8, this=<optimized out>) at
/usr/src/debug/qt6-base/qtbase/src/corelib/tools/qscopedpointer.h:112
#6 qGetPtrHelper<QScopedPointer<QObjectData,
QScopedPointerDeleter<QObjectData> > > (ptr=..., ptr=<optimized out>) at
/usr/src/debug/qt6-base/qtbase/src/corelib/global/qtclasshelpermacros.h:137
#7 QIODevice::d_func (this=0x0) at
/usr/src/debug/qt6-base/qtbase/src/corelib/io/qiodevice.h:146
#8 QIODevice::write (this=0x0, data=...) at
/usr/src/debug/qt6-base/qtbase/src/corelib/io/qiodevice.cpp:1867
#9 0x00007f099a60355b in FtpInternal::ftpSendCmd (this=0x55df97a233f0,
cmd=..., maxretries=1) at
/usr/src/debug/kio/kio-6.17.0/src/kioworkers/ftp/ftp.cpp:721
#10 0x00007f099a60eca1 in FtpInternal::ftpFolder (this=0x55df97a233f0,
path=<optimized out>) at
/usr/src/debug/kio/kio-6.17.0/src/kioworkers/ftp/ftp.cpp:2200
#11 0x00007f099a60a2cd in FtpInternal::stat (this=0x55df97a233f0, url=...) at
/usr/src/debug/kio/kio-6.17.0/src/kioworkers/ftp/ftp.cpp:1378
#12 0x00007f099a60daf6 in Ftp::stat (this=<optimized out>, url=<optimized out>)
at /usr/include/c++/15.1.1/bits/unique_ptr.h:193
#13 0x00007f099a4e53f0 in KIO::WorkerSlaveBaseBridge::stat
(this=0x55df97a1ed00, url=<optimized out>) at
/usr/src/debug/kio/kio-6.17.0/src/core/workerbase_p.h:111
#14 0x00007f099a4e12ef in KIO::SlaveBase::dispatch (this=0x55df97a1ed00,
command=69, data=...) at
/usr/src/debug/kio/kio-6.17.0/src/core/slavebase.cpp:1221
#15 0x00007f099a4dee70 in KIO::SlaveBase::dispatchLoop() [clone .constprop.0]
(this=<optimized out>) at
/usr/src/debug/kio/kio-6.17.0/src/core/slavebase.cpp:363
#16 0x00007f099a4e217d in KIO::WorkerBase::dispatchLoop (this=<optimized out>)
at /usr/src/debug/kio/kio-6.17.0/src/core/workerbase.cpp:27
#17 0x00007f099a60d7f8 in kdemain (argc=<optimized out>, argv=<optimized out>)
at /usr/src/debug/kio/kio-6.17.0/src/kioworkers/ftp/ftp.cpp:177
#18 0x000055df7e07f24a in main (argc=5, argv=0x7fff1b1c9598) at
/usr/include/qt6/QtCore/qvarlengtharray.h:89
Reported using DrKonqi
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