Bug 373624

Summary: Plasma crashes when iogear kvm switches to another computer.
Product: [Plasma] plasmashell Reporter: Adam Reed <AdamReed>
Component: generalAssignee: David Edmundson <kde>
Status: RESOLVED DUPLICATE    
Severity: crash CC: bhush94, notmart, plasma-bugs
Priority: NOR Keywords: drkonqi
Version: 5.5.5   
Target Milestone: 1.0   
Platform: openSUSE   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: attachment-17043-0.html

Description Adam Reed 2016-12-13 21:03:19 UTC 
Application: plasmashell (5.5.5)

Qt Version: 5.5.1
Operating System: Linux 4.1.36-41-default x86_64
Distribution: "openSUSE Leap 42.1 (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:
Switched iogear KVM to another computer. This first started after an update about a week ago.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f62de03f7c0 (LWP 7118))]

Thread 9 (Thread 0x7f620df1e700 (LWP 7135)):
#0  0x00007f62d753ebfd in poll () at /lib64/libc.so.6
#1  0x00007f62d3c1be64 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f62d3c1bf7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f62d7e6bd8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f62d7e12d53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f62d7c3461a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f620f56acf7 in KCupsConnection::run() () at /usr/lib64/libkcupslib.so
#7  0x00007f62d7c3932f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f62d6d480a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f62d754702d in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f621f2f9700 (LWP 7134)):
#0  0x00007f62d7553662 in __libc_disable_asynccancel () at /lib64/libc.so.6
#1  0x00007f62d753acd9 in read () at /lib64/libc.so.6
#2  0x00007f62d3c5cb60 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f62d3c1b999 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f62d3c1bdf8 in  () at /usr/lib64/libglib-2.0.so.0
#5  0x00007f62d3c1bf7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#6  0x00007f62d7e6bd8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f62d7e12d53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#8  0x00007f62d7c3461a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#9  0x00007f62dbae4282 in  () at /usr/lib64/libQt5Quick.so.5
#10 0x00007f62d7c3932f in  () at /usr/lib64/libQt5Core.so.5
#11 0x00007f62d6d480a4 in start_thread () at /lib64/libpthread.so.0
#12 0x00007f62d754702d in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f62a5fc9700 (LWP 7133)):
#0  0x00007f62d6d4c03f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f62dd71786b in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007f62dd717899 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007f62d6d480a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f62d754702d in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f62a787a700 (LWP 7132)):
#0  0x00007f62d3c5dcf9 in g_mutex_lock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f62d3c1b8fc in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f62d3c1bdf8 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f62d3c1bf7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f62d7e6bd8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f62d7e12d53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f62d7c3461a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f62daf48e18 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f62d7c3932f in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007f62d6d480a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f62d754702d in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f62ad0c5700 (LWP 7131)):
#0  0x00007f62d3c1b950 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f62d3c1bdf8 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f62d3c1bf7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f62d7e6bd8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f62d7e12d53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f62d7c3461a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f62daf48e18 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f62d7c3932f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f62d6d480a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f62d754702d in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f62b31a0700 (LWP 7130)):
#0  0x00007f62d6d4c03f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f62bddbca73 in  () at /usr/lib64/dri/r600_dri.so
#2  0x00007f62bddbc1f7 in  () at /usr/lib64/dri/r600_dri.so
#3  0x00007f62d6d480a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f62d754702d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f62c4e53700 (LWP 7128)):
#0  0x00007f62d753ebfd in poll () at /lib64/libc.so.6
#1  0x00007f62d3c1be64 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f62d3c1bf7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f62d7e6bd8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f62d7e12d53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f62d7c3461a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f62daf48e18 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f62d7c3932f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f62d6d480a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f62d754702d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f62c7a85700 (LWP 7121)):
#0  0x00007f62d753ebfd in poll () at /lib64/libc.so.6
#1  0x00007f62dc492422 in  () at /usr/lib64/libxcb.so.1
#2  0x00007f62dc49400f in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f62c9bd63c9 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f62d7c3932f in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f62d6d480a4 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f62d754702d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f62de03f7c0 (LWP 7118)):
[KCrash Handler]
#6  0x00007f62d74970c7 in raise () at /lib64/libc.so.6
#7  0x00007f62d7498478 in abort () at /lib64/libc.so.6
#8  0x00007f62d74d4784 in  () at /lib64/libc.so.6
#9  0x00007f62d74da026 in malloc_printerr () at /lib64/libc.so.6
#10 0x00007f62d74dad53 in _int_free () at /lib64/libc.so.6
#11 0x00007f62c99903f1 in XIQueryDevice () at /usr/lib64/libXi.so.6
#12 0x00007f62c9bf7d74 in QXcbConnection::touchDeviceForId(int) () at /usr/lib64/libQt5XcbQpa.so.5
#13 0x00007f62c9bf94ed in QXcbConnection::xi2SetupDevices() () at /usr/lib64/libQt5XcbQpa.so.5
#14 0x00007f62c9bf9ba0 in QXcbConnection::xi2HandleHierachyEvent(void*) () at /usr/lib64/libQt5XcbQpa.so.5
#15 0x00007f62c9bfb93b in QXcbConnection::xi2HandleEvent(xcb_ge_event_t*) () at /usr/lib64/libQt5XcbQpa.so.5
#16 0x00007f62c9bd434d in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib64/libQt5XcbQpa.so.5
#17 0x00007f62c9bd601b in QXcbConnection::processXcbEvents() () at /usr/lib64/libQt5XcbQpa.so.5
#18 0x00007f62d7e45ac6 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#19 0x00007f62d918fe7c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#20 0x00007f62d9194cc8 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#21 0x00007f62d7e14e95 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#22 0x00007f62d7e17057 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#23 0x00007f62d7e6c8f3 in  () at /usr/lib64/libQt5Core.so.5
#24 0x00007f62d3c1bc84 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#25 0x00007f62d3c1bed8 in  () at /usr/lib64/libglib-2.0.so.0
#26 0x00007f62d3c1bf7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#27 0x00007f62d7e6bd6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#28 0x00007f62d7e12d53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#29 0x00007f62d7e1a8f6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#30 0x0000000000436b3d in main ()

Reported using DrKonqi
Comment 1 Marco Martin 2016-12-15 10:05:07 UTC 
seems to be something deep in the xcb qpa, do other Qt apps crash as well?
Comment 2 Adam Reed 2016-12-15 20:31:33 UTC 
Created attachment 102802 [details]
attachment-17043-0.html

I have not noticed other apps crashing, but I seldom switch computers using
the KVM when apps other than browsers and konsole are running.

On Thu, Dec 15, 2016 at 2:05 AM, Marco Martin <bugzilla_noreply@kde.org>
wrote:

> https://bugs.kde.org/show_bug.cgi?id=373624
>
> Marco Martin <notmart@gmail.com> changed:
>
>            What    |Removed                     |Added
> ------------------------------------------------------------
> ----------------
>                  CC|                            |notmart@gmail.com
>
> --- Comment #1 from Marco Martin <notmart@gmail.com> ---
> seems to be something deep in the xcb qpa, do other Qt apps crash as well?
>
> --
> You are receiving this mail because:
> You reported the bug.
Comment 3 Marco Martin 2016-12-19 12:19:47 UTC 

*** This bug has been marked as a duplicate of bug 373865 ***