[plasmashell] [Bug 359066] Plasma workspace freezes for 10 seconds upon selecting text in an untrusted X11 session (e.g. ssh -X)

[Bug Janitor Service]

https://bugs.kde.org/show_bug.cgi?id=359066

Bug Janitor Service  changed:

   What|Removed |Added

 Resolution|WAITINGFORINFO  |WORKSFORME
 Status|NEEDSINFO   |RESOLVED

--- Comment #8 from Bug Janitor Service  ---
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

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[plasmashell] [Bug 359066] Plasma workspace freezes for 10 seconds upon selecting text in an untrusted X11 session (e.g. ssh -X)

[Bug Janitor Service]

https://bugs.kde.org/show_bug.cgi?id=359066

--- Comment #7 from Bug Janitor Service  ---
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
mark the bug 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!

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[plasmashell] [Bug 359066] Plasma workspace freezes for 10 seconds upon selecting text in an untrusted X11 session (e.g. ssh -X)

[Justin Zobel]

https://bugs.kde.org/show_bug.cgi?id=359066

Justin Zobel  changed:

   What|Removed |Added

 Status|CONFIRMED   |NEEDSINFO
 Resolution|--- |WAITINGFORINFO
 CC||justin.zo...@gmail.com

--- Comment #6 from Justin Zobel  ---
I've just tested this on plasmashell 5.20.2 and I can't reproduce the issue.

Can you please test and confirm if this issue is still occurring or if this bug
report can be marked as resolved. I'm setting status to "needsinfo" pending
your response, please change back to "reported" or "resolved" when you respond,
thanks.

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[plasmashell] [Bug 359066] Plasma workspace freezes for 10 seconds upon selecting text in an untrusted X11 session (e.g. ssh -X)

[David Edmundson via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=359066

David Edmundson  changed:

   What|Removed |Added

 Ever confirmed|0   |1
 Status|UNCONFIRMED |CONFIRMED

--- Comment #5 from David Edmundson  ---
Can reproduce the problem. Thanks

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[plasmashell] [Bug 359066] Plasma workspace freezes for 10 seconds upon selecting text in an untrusted X11 session (e.g. ssh -X)

[David Edmundson via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=359066

--- Comment #3 from David Edmundson  ---
select can be a blocking system call. 

Would it be possible for you to get debug symbols for Qt so we can see where
this is?
Also this is deep in Qt, so we'll have to report this upstream.

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[plasmashell] [Bug 359066] Plasma workspace freezes for 10 seconds upon selecting text in an untrusted X11 session (e.g. ssh -X)

[Rob via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=359066

--- Comment #4 from Rob  ---
I digged up an old debug build of Qt (5.5.1) and got the following. It seems to
get stuck for too long in QXcbClipboard::waitForClipboardEvent.

Thread 1 (Thread 0x7f714e57d800 (LWP 27821)):
#0  0x7f7148264e23 in select () from /usr/lib/libc.so.6
#1  0x7f7139800b90 in QXcbClipboard::waitForClipboardEvent
(this=this@entry=0xdd5f50, win=win@entry=33554495, type=type@entry=31,
timeout=timeout@entry=5000, checkManager=checkManager@entry=false) at
qxcbclipboard.cpp:932
#2  0x7f71398011af in QXcbClipboard::getSelection (this=0xdd5f50,
selection=1, target=341, property=346, time=673078026, time@entry=0) at
qxcbclipboard.cpp:1020
#3  0x7f7139802cb0 in QXcbClipboard::getDataInFormat (fmtAtom=, modeAtom=, this=) at qxcbclipboard.cpp:1005
#4  QXcbClipboardMime::formats_sys (this=0x36126d0) at qxcbclipboard.cpp:97
#5  0x7f71490b2fd9 in QInternalMimeData::formats (this=) at
kernel/qdnd.cpp:207
#6  0x7f708c33a700 in ?? () from
/usr/lib/qt/plugins/plasma/dataengine/plasma_engine_clipboard.so
#7  0x7f7148b73fb7 in QtPrivate::QSlotObjectBase::call (a=0x7fff1721bac0,
r=0x376b520, this=) at
../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#8  QMetaObject::activate (sender=0x31f9540, signalOffset=,
local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fff1721bac0)
at kernel/qobject.cpp:3698
#9  0x7f7148b74927 in QMetaObject::activate (sender=,
m=m@entry=0x7f71496eb400 ,
local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fff1721bac0)
at kernel/qobject.cpp:3578
#10 0x7f7149420bee in QClipboard::changed (this=,
_t1=QClipboard::Selection) at .moc/moc_qclipboard.cpp:158
#11 0x7f7149098383 in QPlatformClipboard::emitChanged
(this=this@entry=0xdd5f50, mode=mode@entry=QClipboard::Selection) at
kernel/qplatformclipboard.cpp:119
#12 0x7f71398013d9 in QXcbClipboard::handleXFixesSelectionRequest
(this=0xdd5f50, event=event@entry=0x7f7130004aa0) at qxcbclipboard.cpp:754
#13 0x7f7139807f58 in QXcbConnection::handleXcbEvent
(this=this@entry=0xdb4860, event=event@entry=0x7f7130004aa0) at
qxcbconnection.cpp:1157
#14 0x7f7139808bd3 in QXcbConnection::processXcbEvents (this=0xdb4860) at
qxcbconnection.cpp:1527
#15 0x7f7148b74ff1 in QObject::event (this=0xdb4860, e=) at
kernel/qobject.cpp:1239
#16 0x7f7149d0d01c in QApplicationPrivate::notify_helper
(this=this@entry=0xdab410, receiver=receiver@entry=0xdb4860,
e=e@entry=0x7f7130004320) at kernel/qapplication.cpp:3716
#17 0x7f7149d124f6 in QApplication::notify (this=0x7fff1721c2d0,
receiver=0xdb4860, e=0x7f7130004320) at kernel/qapplication.cpp:3499
#18 0x7f7148b459ab in QCoreApplication::notifyInternal
(this=0x7fff1721c2d0, receiver=0xdb4860, event=event@entry=0x7f7130004320) at
kernel/qcoreapplication.cpp:965
#19 0x7f7148b47da6 in QCoreApplication::sendEvent (event=0x7f7130004320,
receiver=) at
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#20 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0,
event_type=event_type@entry=0, data=0xda15d0) at
kernel/qcoreapplication.cpp:1593
#21 0x7f7148b48288 in QCoreApplication::sendPostedEvents
(receiver=receiver@entry=0x0, event_type=event_type@entry=0) at
kernel/qcoreapplication.cpp:1451
#22 0x7f7148b9bf43 in postEventSourceDispatch (s=0xde00b0) at
kernel/qeventdispatcher_glib.cpp:271
#23 0x7f7144957dc7 in g_main_context_dispatch () from
/usr/lib/libglib-2.0.so.0
#24 0x7f7144958020 in ?? () from /usr/lib/libglib-2.0.so.0
#25 0x7f71449580cc in g_main_context_iteration () from
/usr/lib/libglib-2.0.so.0
#26 0x7f7148b9c34f in QEventDispatcherGlib::processEvents (this=0xe02720,
flags=...) at kernel/qeventdispatcher_glib.cpp:418
#27 0x7f7148b4337a in QEventLoop::exec (this=this@entry=0x7fff1721c170,
flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#28 0x7f7148b4b33c in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1229
#29 0x00431304 in main ()

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[plasmashell] [Bug 359066] Plasma workspace freezes for 10 seconds upon selecting text in an untrusted X11 session (e.g. ssh -X)

[Rob via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=359066

--- Comment #2 from Rob  ---
I found this bug while selecting text, but the same happens when I use Ctrl+C
to copy to the clipboard.

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