Bug 353603

Summary: PLasma restarted after crash on startup
Product: [Plasma] plasmashell Reporter: Vit Pelcak <vit>
Component: generalAssignee: David Edmundson <kde>
Status: RESOLVED WORKSFORME    
Severity: crash CC: bhush94, plasma-bugs, vit
Priority: NOR Keywords: drkonqi, triaged
Version: 5.4.1   
Target Milestone: 1.0   
Platform: openSUSE   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: New crash information added by DrKonqi

Description Vit Pelcak 2015-10-06 13:14:54 UTC 
Application: plasmashell (5.4.1)

Qt Version: 5.5.0
Operating System: Linux 4.2.1-1-desktop x86_64
Distribution: "openSUSE Tumbleweed (20151002) (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:

After logging into the system, plasma crashed and drkonqui reported segfault.

I have setup of 2 monitors atteched via docking station to notebook. I configured whole setup by systemsettings.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f8352c2f8c0 (LWP 27760))]

Thread 8 (Thread 0x7f833c1bf700 (LWP 27761)):
#0  0x00007f834c21be7d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f8351095432 in poll (__timeout=-1, __nfds=1, __fds=0x7f833c1bec00) at /usr/include/bits/poll2.h:46
#2  _xcb_conn_wait (c=c@entry=0xe13330, cond=cond@entry=0xe13370, vector=vector@entry=0x0, count=count@entry=0x0) at xcb_conn.c:459
#3  0x00007f8351097007 in xcb_wait_for_event (c=0xe13330) at xcb_in.c:693
#4  0x00007f833e30ee89 in QXcbEventReader::run (this=0xe1da00) at qxcbconnection.cpp:1214
#5  0x00007f834c90aa9f in QThreadPrivate::start (arg=0xe1da00) at thread/qthread_unix.cpp:331
#6  0x00007f834ba244a4 in start_thread (arg=0x7f833c1bf700) at pthread_create.c:334
#7  0x00007f834c22480d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f833a44d700 (LWP 27783)):
#0  0x00007f834c21be7d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f8348923e94 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7f832c003070, timeout=<optimized out>, context=0x7f832c000990) at gmain.c:4103
#2  g_main_context_iterate (context=context@entry=0x7f832c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803
#3  0x00007f8348923f9c in g_main_context_iteration (context=0x7f832c000990, may_block=may_block@entry=1) at gmain.c:3869
#4  0x00007f834cb2f35b in QEventDispatcherGlib::processEvents (this=0x7f832c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f834cad947a in QEventLoop::exec (this=this@entry=0x7f833a44ccf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f834c905c6c in QThread::exec (this=this@entry=0xeec9e0) at thread/qthread.cpp:503
#7  0x00007f834fb761a5 in QQmlThreadPrivate::run (this=0xeec9e0) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f834c90aa9f in QThreadPrivate::start (arg=0xeec9e0) at thread/qthread_unix.cpp:331
#9  0x00007f834ba244a4 in start_thread (arg=0x7f833a44d700) at pthread_create.c:334
#10 0x00007f834c22480d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f8330ab6700 (LWP 27800)):
#0  0x00007f834c21be7d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f8348923e94 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7f8328002e70, timeout=<optimized out>, context=0x7f8328000990) at gmain.c:4103
#2  g_main_context_iterate (context=context@entry=0x7f8328000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803
#3  0x00007f8348923f9c in g_main_context_iteration (context=0x7f8328000990, may_block=may_block@entry=1) at gmain.c:3869
#4  0x00007f834cb2f33f in QEventDispatcherGlib::processEvents (this=0x7f83280008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f834cad947a in QEventLoop::exec (this=this@entry=0x7f8330ab5cf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f834c905c6c in QThread::exec (this=this@entry=0x1273cb0) at thread/qthread.cpp:503
#7  0x00007f834fb761a5 in QQmlThreadPrivate::run (this=0x1273cb0) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f834c90aa9f in QThreadPrivate::start (arg=0x1273cb0) at thread/qthread_unix.cpp:331
#9  0x00007f834ba244a4 in start_thread (arg=0x7f8330ab6700) at pthread_create.c:334
#10 0x00007f834c22480d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f8326f8d700 (LWP 28239)):
#0  0x00007f834c21be7d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f8348923e94 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7f8320003070, timeout=<optimized out>, context=0x7f8320000990) at gmain.c:4103
#2  g_main_context_iterate (context=context@entry=0x7f8320000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803
#3  0x00007f8348923f9c in g_main_context_iteration (context=0x7f8320000990, may_block=may_block@entry=1) at gmain.c:3869
#4  0x00007f834cb2f33f in QEventDispatcherGlib::processEvents (this=0x7f83200008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f834cad947a in QEventLoop::exec (this=this@entry=0x7f8326f8ccf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f834c905c6c in QThread::exec (this=this@entry=0x128ee30) at thread/qthread.cpp:503
#7  0x00007f834fb761a5 in QQmlThreadPrivate::run (this=0x128ee30) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f834c90aa9f in QThreadPrivate::start (arg=0x128ee30) at thread/qthread_unix.cpp:331
#9  0x00007f834ba244a4 in start_thread (arg=0x7f8326f8d700) at pthread_create.c:334
#10 0x00007f834c22480d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f83256c2700 (LWP 28249)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8352306aa4 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f83525edea0 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f8352306ae9 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f834ba244a4 in start_thread (arg=0x7f83256c2700) at pthread_create.c:334
#4  0x00007f834c22480d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f829ea20700 (LWP 28250)):
#0  0x00007f834c21be7d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f8348923e94 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7f8298007930, timeout=<optimized out>, context=0x7f8298000990) at gmain.c:4103
#2  g_main_context_iterate (context=context@entry=0x7f8298000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803
#3  0x00007f8348923f9c in g_main_context_iteration (context=0x7f8298000990, may_block=may_block@entry=1) at gmain.c:3869
#4  0x00007f834cb2f33f in QEventDispatcherGlib::processEvents (this=0x7f82980008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f834cad947a in QEventLoop::exec (this=this@entry=0x7f829ea1fcb0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f834c905c6c in QThread::exec (this=this@entry=0x1347930) at thread/qthread.cpp:503
#7  0x00007f83506f3b62 in QQuickPixmapReader::run (this=0x1347930) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/util/qquickpixmapcache.cpp:754
#8  0x00007f834c90aa9f in QThreadPrivate::start (arg=0x1347930) at thread/qthread_unix.cpp:331
#9  0x00007f834ba244a4 in start_thread (arg=0x7f829ea20700) at pthread_create.c:334
#10 0x00007f834c22480d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f8288dce700 (LWP 28315)):
#0  0x00007f834c21be7d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f8348923e94 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7f82840048d0, timeout=<optimized out>, context=0x7f8284000990) at gmain.c:4103
#2  g_main_context_iterate (context=context@entry=0x7f8284000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803
#3  0x00007f8348923f9c in g_main_context_iteration (context=0x7f8284000990, may_block=may_block@entry=1) at gmain.c:3869
#4  0x00007f834cb2f33f in QEventDispatcherGlib::processEvents (this=0x7f82840008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f834cad947a in QEventLoop::exec (this=this@entry=0x7f8288dcdcd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f834c905c6c in QThread::exec (this=this@entry=0x34e5990) at thread/qthread.cpp:503
#7  0x00007f828b2deb77 in KCupsConnection::run (this=0x34e5990) at /usr/src/debug/print-manager-15.04.3/libkcups/KCupsConnection.cpp:303
#8  0x00007f834c90aa9f in QThreadPrivate::start (arg=0x34e5990) at thread/qthread_unix.cpp:331
#9  0x00007f834ba244a4 in start_thread (arg=0x7f8288dce700) at pthread_create.c:334
#10 0x00007f834c22480d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f8352c2f8c0 (LWP 27760)):
[KCrash Handler]
#6  0x00007f833e3271df in QXcbWindow::handleClientMessageEvent (this=0x2e39cb0, event=0x7f8334003820) at qxcbwindow.cpp:1947
#7  0x00007f833e312c33 in QXcbConnection::handleXcbEvent (this=this@entry=0xe11b90, event=event@entry=0x7f8334003820) at qxcbconnection.cpp:1043
#8  0x00007f833e31345b in QXcbConnection::processXcbEvents (this=0xe11b90) at qxcbconnection.cpp:1487
#9  0x00007f834cb09b89 in QObject::event (this=0xe11b90, e=<optimized out>) at kernel/qobject.cpp:1246
#10 0x00007f834de528fc in QApplicationPrivate::notify_helper (this=this@entry=0xe02f30, receiver=receiver@entry=0xe11b90, e=e@entry=0x7f8334003890) at kernel/qapplication.cpp:3717
#11 0x00007f834de57a06 in QApplication::notify (this=0x7fffed149470, receiver=0xe11b90, e=0x7f8334003890) at kernel/qapplication.cpp:3500
#12 0x00007f834cadbb33 in QCoreApplication::notifyInternal (this=0x7fffed149470, receiver=0xe11b90, event=event@entry=0x7f8334003890) at kernel/qcoreapplication.cpp:965
#13 0x00007f834cadde56 in sendEvent (event=0x7f8334003890, receiver=<optimized out>) at kernel/qcoreapplication.h:224
#14 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0xdf86a0) at kernel/qcoreapplication.cpp:1593
#15 0x00007f834cade338 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
#16 0x00007f834cb2ef33 in postEventSourceDispatch (s=0xe34f40) at kernel/qeventdispatcher_glib.cpp:271
#17 0x00007f8348923cc7 in g_main_dispatch (context=0x7f83340016f0) at gmain.c:3122
#18 g_main_context_dispatch (context=context@entry=0x7f83340016f0) at gmain.c:3737
#19 0x00007f8348923ef8 in g_main_context_iterate (context=context@entry=0x7f83340016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3808
#20 0x00007f8348923f9c in g_main_context_iteration (context=0x7f83340016f0, may_block=may_block@entry=1) at gmain.c:3869
#21 0x00007f834cb2f33f in QEventDispatcherGlib::processEvents (this=0xe9e080, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#22 0x00007f834cad947a in QEventLoop::exec (this=this@entry=0x7fffed149300, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#23 0x00007f834cae111d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#24 0x00007f834d0171bc in QGuiApplication::exec () at kernel/qguiapplication.cpp:1528
#25 0x00007f834de4efa5 in QApplication::exec () at kernel/qapplication.cpp:2977
#26 0x00000000004360c0 in main (argc=2, argv=<optimized out>) at /usr/src/debug/plasma-workspace-5.4.1/shell/main.cpp:176

Possible duplicates by query: bug 353563.

Reported using DrKonqi
Comment 1 David Edmundson 2015-10-06 18:07:02 UTC 
Can you confirm your exact Qt version from your package manager.

if I check out v5.5.0, it doesn't really make sense for it to crash on that line.
Whereas looking round that function there are places where it's plausible if given bad data

I suspect SuSE might have some additional patches on that file.
Comment 2 Vit Pelcak 2015-10-23 11:08:51 UTC 
Created attachment 95091 [details]
New crash information added by DrKonqi

plasmashell (5.4.1) using Qt 5.5.0

- What I was doing when the application crashed:

I was just using desktop as usual. I don't remember anything in particular. Out of sudden Plasma restarted and drkonqui started up.

-- Backtrace (Reduced):
#6  0x00007fd8ee9eb20f in QXcbWindow::handleClientMessageEvent (this=0x4036470, event=0x7fd8e80079c0) at qxcbwindow.cpp:1955
#7  0x00007fd8ee9d6c23 in QXcbConnection::handleXcbEvent (this=this@entry=0x202dc30, event=event@entry=0x7fd8e80079c0) at qxcbconnection.cpp:1043
#8  0x00007fd8ee9d744b in QXcbConnection::processXcbEvents (this=0x202dc30) at qxcbconnection.cpp:1489
#9  0x00007fd8fd1d0b89 in QObject::event (this=0x202dc30, e=<optimized out>) at kernel/qobject.cpp:1246
#10 0x00007fd8fe5198fc in QApplicationPrivate::notify_helper (this=this@entry=0x201efe0, receiver=receiver@entry=0x202dc30, e=e@entry=0x7fd8e80126a0) at kernel/qapplication.cpp:3717
Comment 3 Andrew Crouthamel 2018-09-25 21:55:54 UTC 
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days, the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information.

For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please set the bug status as REPORTED so that the KDE team knows that the bug is ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 4 Andrew Crouthamel 2018-10-27 02:04:00 UTC 
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information.

For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!