Bug#810947: kwin-x11: iceweasel locks up when multiple windows restored
Package: kwin-x11
Version: 4:5.4.3-1.1
Followup-For: Bug #810947
Dear Maintainer,
*** Reporter, please consider answering these questions, where appropriate ***
When iceweasel locked up I did a gdb -p on the kwin_x11 process, I
obtained the backtrace as shown in the attached 20160115-kwin2.log.
When I returned to the plasma desktop I saw a crash notification for kwin_x11
and obtained the backtrace as shown in the attached 20160115-kwin3.log
*** End of the template - remove these template lines ***
-- System Information:
Debian Release: stretch/sid
APT prefers unstable
APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 4.4.0-rc8-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Init: sysvinit (via /sbin/init)
Versions of packages kwin-x11 depends on:
ii kwin-common 4:5.4.3-1.1
ii libc6 2.21-6
ii libkf5i18n5 5.16.0-1
ii libkf5windowsystem5 5.16.0-1
ii libqt5core5a 5.5.1+dfsg-12
ii libqt5gui5 5.5.1+dfsg-12
ii libqt5widgets5 5.5.1+dfsg-12
ii libqt5x11extras5 5.5.1-3
ii libstdc++6 5.3.1-5
ii libxcb1 1.11.1-1
kwin-x11 recommends no packages.
kwin-x11 suggests no packages.
-- debconf-show failed
amarsh04@am64:~$ ps -ef|grep kwin
amarsh04 15845 15825 1 00:59 ? 00:00:00 kwin_x11
amarsh04 16035 1 0 00:59 ? 00:00:00 /usr/bin/kwin_x11 --crashes 1
amarsh04 16036 15798 0 00:59 ? 00:00:00 /usr/lib/x86_64-linux-gnu/libexec/drkonqi -platform xcb -display :0 --appname kwin_x11 --apppath /usr/bin --signal 11 --pid 15845 --appversion 5.4.3 --programname KWin --bugaddress submit@bugs.kde.org --startupid 0
amarsh04 16060 15155 0 01:00 pts/1 00:00:00 grep kwin
amarsh04@am64:~$ gdb -p 15845
GNU gdb (Debian 7.10-1+b1) 7.10
Copyright (C) 2015 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
Attaching to process 15845
Reading symbols from /usr/bin/kwin_x11...Reading symbols from /usr/lib/debug/.build-id/b1/6300ea5d63a69df9c7d5e73635964d42c598fc.debug...done.
done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so...Reading symbols from /usr/lib/debug/.build-id/ab/173c25de7940ddfb2f0b496e3893aea90bc43b.debug...done.
done.
Reading symbols from /lib/x86_64-linux-gnu/libc.so.6...Reading symbols from /usr/lib/debug/.build-id/eb/1cbe301d5a4176fa6a9a2bf515ba2d425f7065.debug...done.
done.
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done.
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done.
[New LWP 16014]
[New LWP 15946]
[New LWP 15870]
[New LWP 15867]
[New LWP 15850]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
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done.
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done.
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done.
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Reading symbols from /usr/lib/x86_64-linux-gnu/libxcb-xkb.so.1...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libxkbcommon-x11.so.0...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libfontconfig.so.1...Reading symbols from /usr/lib/debug/.build-id/28/e3f49d2a3bc539f225df5d20c08260301d74e2.debug...done.
done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libXcursor.so.1...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libXrender.so.1...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so...Reading symbols from /usr/lib/debug/.build-id/06/8210d0708ecaae6bd5d2ced93649771cf36402.debug...done.
done.
Reading symbols from /usr/lib/x86_64-linux-gnu/qt5/plugins/platformthemes/KDEPlatformTheme.so...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libKF5KIOFileWidgets.so.5...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libKF5Bookmarks.so.5...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libKF5Solid.so.5...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforminputcontexts/libibusplatforminputcontextplugin.so...Reading symbols from /usr/lib/debug/.build-id/fd/050a9f8b6b6a848caea4882297db49bed6edc7.debug...done.
done.
Reading symbols from /lib/x86_64-linux-gnu/libnss_compat.so.2...Reading symbols from /usr/lib/debug/.build-id/ad/abaf093a9db73a49c609c9dca36fcc435a2747.debug...done.
done.
Reading symbols from /lib/x86_64-linux-gnu/libnss_nis.so.2...Reading symbols from /usr/lib/debug/.build-id/c5/043e4d4aeffcfdb98bff3a52f28eb8fe00a56b.debug...done.
done.
Reading symbols from /lib/x86_64-linux-gnu/libnss_files.so.2...Reading symbols from /usr/lib/debug/.build-id/23/9380c75deb89b3dca87c53da03caa47a21a4b1.debug...done.
done.
Reading symbols from /usr/lib/x86_64-linux-gnu/qt5/plugins/styles/oxygen.so...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libKF5Style.so.5...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/liboxygenstyle5.so.5...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kdecoration2/kwin5_aurorae.so...Reading symbols from /usr/lib/debug/.build-id/3c/8ba328a39d9f706e87345cf6806b01410f04cc.debug...done.
done.
Reading symbols from /usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kwin/decoration/libdecorationplugin.so...Reading symbols from /usr/lib/debug/.build-id/8a/c2d49655114ccef523f076e5f2b8cdf304a654.debug...done.
done.
Reading symbols from /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick.2/libqtquick2plugin.so...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kwin/decorations/plastik/libplastikplugin.so...Reading symbols from /usr/lib/debug/.build-id/ef/8edf2cc7c989c7df19231d3b549aaafb657104.debug...done.
done.
Reading symbols from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kquickcontrolsaddons/libkquickcontrolsaddonsplugin.so...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libKF5QuickAddons.so.5...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so...Reading symbols from /usr/lib/debug/.build-id/57/3cee8093c87b32ae552f59456dee4514508747.debug...done.
done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libdrm_radeon.so.1...Reading symbols from /usr/lib/debug/.build-id/0b/23e0a1da86cb663db0ae5fa25630795fd81ebb.debug...done.
done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libdrm_amdgpu.so.1...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libelf.so.1...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libLLVM-3.7.so.1...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libedit.so.2...(no debugging symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libtinfo.so.5...(no debugging symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libbsd.so.0...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libtxc_dxtn.so...(no debugging symbols found)...done.
0x00000030004b818d in nanosleep () at ../sysdeps/unix/syscall-template.S:81
81 ../sysdeps/unix/syscall-template.S: No such file or directory.
(gdb) bt
#0 0x00000030004b818d in nanosleep () at ../sysdeps/unix/syscall-template.S:81
#1 0x00000030004b8024 in __sleep (seconds=0)
at ../sysdeps/unix/sysv/linux/sleep.c:138
#2 0x000000304c4037a3 in () at /usr/lib/x86_64-linux-gnu/libKF5Crash.so.5
#3 0x000000304c403e39 in () at /usr/lib/x86_64-linux-gnu/libKF5Crash.so.5
#4 0x000000304c404328 in KCrash::defaultCrashHandler(int) ()
at /usr/lib/x86_64-linux-gnu/libKF5Crash.so.5
#5 0x00000030004336e0 in <signal handler called> ()
at /lib/x86_64-linux-gnu/libc.so.6
#6 0x000000304abee215 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7 0x000000304ab950e5 in QV4::ExecutionEngine::newStringObject(QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8 0x000000304ac2e592 in QV4::Runtime::getProperty(QV4::ExecutionEngine*, QV4::Value const&, int) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9 0x00007f8a441a9e89 in ()
#10 0x000000304b3b28a2 in QQuickItem::staticMetaObject ()
at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f89b7801238 in ()
#12 0x0000000001e804a0 in ()
#13 0x00007f89b7801230 in ()
#14 0x0000000001c19270 in ()
#15 0x000000301fb14d49 in (anonymous namespace)::construct(QVariant::Private*, void const*) (this=<synthetic pointer>, tc=<synthetic pointer>)
at ../../include/QtCore/5.5.1/QtCore/private/../../../../../src/corelib/kern---Type <return> to continue, or q <return> to quit---
el/qvariant_p.h:339
#16 0x000000301fb14d49 in (anonymous namespace)::construct(QVariant::Private*, void const*) (this=<optimized out>, tc=<synthetic pointer>)
at ../../include/QtCore/5.5.1/QtCore/private/../../../../../src/corelib/kernel/qvariant_p.h:362
#17 0x000000301fb14d49 in (anonymous namespace)::construct(QVariant::Private*, void const*) (this=<synthetic pointer>)
at ../../include/QtCore/5.5.1/QtCore/private/../../../../../src/corelib/kernel/qvariant_p.h:383
#18 0x000000301fb14d49 in (anonymous namespace)::construct(QVariant::Private*, void const*) (data=0x0, type=<optimized out>, logic=<synthetic pointer>)
at ../../include/QtCore/5.5.1/QtCore/private/../../../../../src/corelib/kernel/qmetatypeswitcher_p.h:68
#19 0x000000301fb14d49 in (anonymous namespace)::construct(QVariant::Private*, void const*) (x=0x1aeccf0, copy=0x7ffdf2a4b3d0) at kernel/qguivariant.cpp:101
#20 0x0000000001c19270 in ()
#21 0x0000000001c19270 in ()
#22 0x0000000002425b98 in ()
#23 0x0000000000000003 in ()
#24 0x0000000002425900 in ()
#25 0x000000304ae15e20 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#26 0x00007f89b78011d0 in ()
#27 0x0000000001c19270 in ()
#28 0x00007ffdf2a4be60 in ()
---Type <return> to continue, or q <return> to quit---
#29 0x00007f8a44ed8ca0 in ()
#30 0x0000000000000000 in ()
(gdb) bt full
#0 0x00000030004b818d in nanosleep () at ../sysdeps/unix/syscall-template.S:81
#1 0x00000030004b8024 in __sleep (seconds=0)
at ../sysdeps/unix/sysv/linux/sleep.c:138
ts = {tv_sec = 0, tv_nsec = 365337831}
set = {__val = {65536, 0 <repeats 15 times>}}
oset =
{__val = {1024, 140728674331472, 207437698448, 3815434820, 4294967295, 206166423104, 21, 140728674331872, 140728674331856, 207439819072, 21, 140728674331872, 140728674331856, 0, 0, 206158489149}}
result = <optimized out>
#2 0x000000304c4037a3 in () at /usr/lib/x86_64-linux-gnu/libKF5Crash.so.5
#3 0x000000304c403e39 in () at /usr/lib/x86_64-linux-gnu/libKF5Crash.so.5
#4 0x000000304c404328 in KCrash::defaultCrashHandler(int) ()
at /usr/lib/x86_64-linux-gnu/libKF5Crash.so.5
#5 0x00000030004336e0 in <signal handler called> ()
at /lib/x86_64-linux-gnu/libc.so.6
#6 0x000000304abee215 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7 0x000000304ab950e5 in QV4::ExecutionEngine::newStringObject(QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8 0x000000304ac2e592 in QV4::Runtime::getProperty(QV4::ExecutionEngine*, QV4::Value const&, int) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9 0x00007f8a441a9e89 in ()
#10 0x000000304b3b28a2 in QQuickItem::staticMetaObject ()
at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
---Type <return> to continue, or q <return> to quit---
#11 0x00007f89b7801238 in ()
#12 0x0000000001e804a0 in ()
#13 0x00007f89b7801230 in ()
#14 0x0000000001c19270 in ()
#15 0x000000301fb14d49 in (anonymous namespace)::construct(QVariant::Private*, void const*) (this=<synthetic pointer>, tc=<synthetic pointer>)
at ../../include/QtCore/5.5.1/QtCore/private/../../../../../src/corelib/kernel/qvariant_p.h:339
type = <optimized out>
constructor = {m_x = 0x1aeccf0, m_copy = 0x7ffdf2a4b3d0}
#16 0x000000301fb14d49 in (anonymous namespace)::construct(QVariant::Private*, void const*) (this=<optimized out>, tc=<synthetic pointer>)
at ../../include/QtCore/5.5.1/QtCore/private/../../../../../src/corelib/kernel/qvariant_p.h:362
type = <optimized out>
constructor = {m_x = 0x1aeccf0, m_copy = 0x7ffdf2a4b3d0}
#17 0x000000301fb14d49 in (anonymous namespace)::construct(QVariant::Private*, void const*) (this=<synthetic pointer>)
at ../../include/QtCore/5.5.1/QtCore/private/../../../../../src/corelib/kernel/qvariant_p.h:383
type = <optimized out>
constructor = {m_x = 0x1aeccf0, m_copy = 0x7ffdf2a4b3d0}
#18 0x000000301fb14d49 in (anonymous namespace)::construct(QVariant::Private*, void const*) (data=0x0, type=<optimized out>, logic=<synthetic pointer>)
---Type <return> to continue, or q <return> to quit---
at ../../include/QtCore/5.5.1/QtCore/private/../../../../../src/corelib/kernel/qmetatypeswitcher_p.h:68
type = <optimized out>
constructor = {m_x = 0x1aeccf0, m_copy = 0x7ffdf2a4b3d0}
#19 0x000000301fb14d49 in (anonymous namespace)::construct(QVariant::Private*, void const*) (x=0x1aeccf0, copy=0x7ffdf2a4b3d0) at kernel/qguivariant.cpp:101
type = <optimized out>
constructor = {m_x = 0x1aeccf0, m_copy = 0x7ffdf2a4b3d0}
#20 0x0000000001c19270 in ()
#21 0x0000000001c19270 in ()
#22 0x0000000002425b98 in ()
#23 0x0000000000000003 in ()
#24 0x0000000002425900 in ()
#25 0x000000304ae15e20 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#26 0x00007f89b78011d0 in ()
#27 0x0000000001c19270 in ()
#28 0x00007ffdf2a4be60 in ()
#29 0x00007f8a44ed8ca0 in ()
#30 0x0000000000000000 in ()
(gdb) quit
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f8a4e8cb7c0 (LWP 15845))]
Thread 6 (Thread 0x7f8a4e007700 (LWP 15850)):
#0 0x00000030004df86d in poll () at ../sysdeps/unix/syscall-template.S:81
#1 0x000000300380a382 in _xcb_conn_wait (__timeout=-1, __nfds=1, __fds=0x7f8a4e006d00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2 0x000000300380a382 in _xcb_conn_wait (c=c@entry=0x1893fe0, cond=cond@entry=0x1894020, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:459
#3 0x000000300380bff7 in xcb_wait_for_event (c=0x1893fe0) at ../../src/xcb_in.c:693
#4 0x00007f8a4e66b5b9 in QXcbEventReader::run() (this=0x18a7030) at qxcbconnection.cpp:1230
#5 0x0000003019aa587e in QThreadPrivate::start(void*) (arg=0x18a7030) at thread/qthread_unix.cpp:331
#6 0x0000003000c07284 in start_thread (arg=0x7f8a4e007700) at pthread_create.c:333
#7 0x00000030004e874d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 5 (Thread 0x7f8a46d90700 (LWP 15867)):
#0 0x00000030004e1663 in select () at ../sysdeps/unix/syscall-template.S:81
#1 0x0000003019cd895f in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) (nfds=13, fdread=fdread@entry=0x7f8a38000a78, fdwrite=fdwrite@entry=0x7f8a38000d08, fdexcept=fdexcept@entry=0x7f8a38000f98, orig_timeout=orig_timeout@entry=0x0) at kernel/qcore_unix.cpp:75
#2 0x0000003019cda45e in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) (timeout=0x0, exceptfds=0x7f8a38000f98, writefds=0x7f8a38000d08, readfds=0x7f8a38000a78, nfds=<optimized out>, this=0x7f8a380008c0) at kernel/qeventdispatcher_unix.cpp:320
#3 0x0000003019cda45e in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) (this=this@entry=0x7f8a380008e0, flags=..., flags@entry=..., timeout=timeout@entry=0x0) at kernel/qeventdispatcher_unix.cpp:196
#4 0x0000003019cda98e in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f8a380008c0, flags=...) at kernel/qeventdispatcher_unix.cpp:607
#5 0x0000003019c842fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f8a46d8fde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6 0x0000003019aa08d4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7 0x000000304acd5105 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8 0x0000003019aa587e in QThreadPrivate::start(void*) (arg=0x1b80c90) at thread/qthread_unix.cpp:331
#9 0x0000003000c07284 in start_thread (arg=0x7f8a46d90700) at pthread_create.c:333
#10 0x00000030004e874d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 4 (Thread 0x7f8a45c7c700 (LWP 15870)):
#0 0x0000003000c0c8df in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x0000003084b7e1c4 in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2 0x0000003084b7e209 in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3 0x0000003000c07284 in start_thread (arg=0x7f8a45c7c700) at pthread_create.c:333
#4 0x00000030004e874d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 3 (Thread 0x7f89b3f48700 (LWP 15946)):
#0 0x0000003000c0c8df in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007f89b6f7f423 in radeon_drm_cs_emit_ioctl (mtx=0x1b84250, cond=0x1b84278) at ../../../../../../../include/c11/threads_posix.h:159
#2 0x00007f89b6f7f423 in radeon_drm_cs_emit_ioctl (sema=0x1b84250) at ../../../../../../../src/gallium/auxiliary/os/os_thread.h:259
#3 0x00007f89b6f7f423 in radeon_drm_cs_emit_ioctl (param=param@entry=0x1b83f00) at ../../../../../../../src/gallium/winsys/radeon/drm/radeon_drm_winsys.c:653
#4 0x00007f89b6f7eb77 in impl_thrd_routine (p=<optimized out>) at ../../../../../../../include/c11/threads_posix.h:87
#5 0x0000003000c07284 in start_thread (arg=0x7f89b3f48700) at pthread_create.c:333
#6 0x00000030004e874d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 2 (Thread 0x7f8a44e66700 (LWP 16014)):
#0 0x0000003019cda5a6 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) (this=this@entry=0x7f8a3c0ab030, flags=..., flags@entry=..., timeout=timeout@entry=0x0) at kernel/qeventdispatcher_unix.cpp:184
#1 0x0000003019cda98e in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f8a3c0d62c0, flags=...) at kernel/qeventdispatcher_unix.cpp:607
#2 0x0000003019c842fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f8a44e65de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#3 0x0000003019aa08d4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#4 0x000000304acd5105 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#5 0x0000003019aa587e in QThreadPrivate::start(void*) (arg=0x18776f0) at thread/qthread_unix.cpp:331
#6 0x0000003000c07284 in start_thread (arg=0x7f8a44e66700) at pthread_create.c:333
#7 0x00000030004e874d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 1 (Thread 0x7f8a4e8cb7c0 (LWP 15845)):
[KCrash Handler]
#6 0x000000304abee215 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7 0x000000304ab950e5 in QV4::ExecutionEngine::newStringObject(QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8 0x000000304ac2e592 in QV4::Runtime::getProperty(QV4::ExecutionEngine*, QV4::Value const&, int) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9 0x00007f8a441a9e89 in ()
#10 0x000000304b3b28a2 in QQuickItem::staticMetaObject () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f89b7801238 in ()
#12 0x0000000001e804a0 in ()
#13 0x00007f89b7801230 in ()
#14 0x0000000001c19270 in ()
#15 0x000000301fb14d49 in (anonymous namespace)::construct(QVariant::Private*, void const*) (this=<synthetic pointer>, tc=<synthetic pointer>) at ../../include/QtCore/5.5.1/QtCore/private/../../../../../src/corelib/kernel/qvariant_p.h:339
#16 0x000000301fb14d49 in (anonymous namespace)::construct(QVariant::Private*, void const*) (this=<optimized out>, tc=<synthetic pointer>) at ../../include/QtCore/5.5.1/QtCore/private/../../../../../src/corelib/kernel/qvariant_p.h:362
#17 0x000000301fb14d49 in (anonymous namespace)::construct(QVariant::Private*, void const*) (this=<synthetic pointer>) at ../../include/QtCore/5.5.1/QtCore/private/../../../../../src/corelib/kernel/qvariant_p.h:383
#18 0x000000301fb14d49 in (anonymous namespace)::construct(QVariant::Private*, void const*) (data=0x0, type=<optimized out>, logic=<synthetic pointer>) at ../../include/QtCore/5.5.1/QtCore/private/../../../../../src/corelib/kernel/qmetatypeswitcher_p.h:68
#19 0x000000301fb14d49 in (anonymous namespace)::construct(QVariant::Private*, void const*) (x=0x1aeccf0, copy=0x7ffdf2a4b3d0) at kernel/qguivariant.cpp:101
#20 0x0000000001c19270 in ()
#21 0x0000000001c19270 in ()
#22 0x0000000002425b98 in ()
#23 0x0000000000000003 in ()
#24 0x0000000002425900 in ()
#25 0x000000304ae15e20 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#26 0x00007f89b78011d0 in ()
#27 0x0000000001c19270 in ()
#28 0x00007ffdf2a4be60 in ()
#29 0x00007f8a44ed8ca0 in ()
#30 0x0000000000000000 in ()
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