[plasmashell] [Bug 384540] KDE applications segfault when XLIB_SKIP_ARGB_VISUALS is defined

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=384540

aux...@gmail.com changed:

   What|Removed |Added

 Status|REOPENED|RESOLVED
 Resolution|--- |FIXED

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[plasmashell] [Bug 384540] KDE applications segfault when XLIB_SKIP_ARGB_VISUALS is defined

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=384540

--- Comment #15 from aux...@gmail.com ---
I confirm that on openSUSE 15.2 okular no longer crashes, even though
XLIB_SKIP_ARGB_VISUALS=1 is defined.

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[plasmashell] [Bug 384540] KDE applications segfault when XLIB_SKIP_ARGB_VISUALS is defined

[Tristan Miller]

https://bugs.kde.org/show_bug.cgi?id=384540

--- Comment #14 from Tristan Miller  ---
I also can't reproduce this problem with openSUSE Tumbleweed.

aux...@gmail.com, openSUSE Leap 15.1 is due to be EOL'd in two months.  Perhaps
you could upgrade to 15.2 and try testing again?

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[plasmashell] [Bug 384540] KDE applications segfault when XLIB_SKIP_ARGB_VISUALS is defined

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=384540

--- Comment #13 from aux...@gmail.com ---
Using KDE Frameworks 5.70.0, Qt 5.14.1 and breeze dark, okular is crashing when
launched from emacs, unless I change the code in /usr/bin/emacs to prevent it
from defining XLIB_SKIP_ARGB_VISUALS. How can this be if the patch is in Qt
5.9.7?

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[plasmashell] [Bug 384540] KDE applications segfault when XLIB_SKIP_ARGB_VISUALS is defined

[Tristan Miller]

https://bugs.kde.org/show_bug.cgi?id=384540

--- Comment #12 from Tristan Miller  ---
(In reply to auxsvr from comment #11)
> Using openSUSE 15.1, this report is still valid, as
> XLIB_SKIP_ARGB_VISUALS='' still crashes okular 1.10.0.

Not reproducible for me with openSUSE 15.1 (KDE 5.55.0, Qt 5.9.7). I tried
various applications (Okular 1.6.3, Dolphin) and various widget styles (Breeze,
Fusion). What version of Qt are you running? Is it possible it's an old version
that doesn't contain Kai's patch?

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[plasmashell] [Bug 384540] KDE applications segfault when XLIB_SKIP_ARGB_VISUALS is defined

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=384540

aux...@gmail.com changed:

   What|Removed |Added

 Status|RESOLVED|REOPENED
 Ever confirmed|0   |1
 Resolution|UPSTREAM|---

--- Comment #11 from aux...@gmail.com ---
Using openSUSE 15.1, this report is still valid, as XLIB_SKIP_ARGB_VISUALS=''
still crashes okular 1.10.0.

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[plasmashell] [Bug 384540] KDE applications segfault when XLIB_SKIP_ARGB_VISUALS is defined

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=384540

aux...@gmail.com changed:

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 CC||aux...@gmail.com

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[plasmashell] [Bug 384540] KDE applications segfault when XLIB_SKIP_ARGB_VISUALS is defined

[Simon Andric]

https://bugs.kde.org/show_bug.cgi?id=384540

Simon Andric  changed:

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 CC||simonandr...@gmail.com

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[plasmashell] [Bug 384540] KDE applications segfault when XLIB_SKIP_ARGB_VISUALS is defined

[Kai Uwe Broulik]

https://bugs.kde.org/show_bug.cgi?id=384540

Kai Uwe Broulik  changed:

   What|Removed |Added

 Resolution|--- |UPSTREAM
 Status|UNCONFIRMED |RESOLVED

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[plasmashell] [Bug 384540] KDE applications segfault when XLIB_SKIP_ARGB_VISUALS is defined

[Kai Uwe Broulik]

https://bugs.kde.org/show_bug.cgi?id=384540

--- Comment #10 from Kai Uwe Broulik  ---
Qt patch https://codereview.qt-project.org/#/c/205268/

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[plasmashell] [Bug 384540] KDE applications segfault when XLIB_SKIP_ARGB_VISUALS is defined

[Kai Uwe Broulik]

https://bugs.kde.org/show_bug.cgi?id=384540

--- Comment #9 from Kai Uwe Broulik  ---
Seems to crash accessing a nullptr returned by glXGetVisualFromFBConfig which
according to docs can return null:

"If config is a valid GLX frame buffer configuration and it has an associated X
Visual, then information describing that visual is returned; otherwise NULL is
returned. Use XFree to free the data returned."

https://www.khronos.org/registry/OpenGL-Refpages/gl2.1/xhtml/glXGetVisualFromFBConfig.xml

And it probably does here because you explicitly told it to skip some visuals

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[plasmashell] [Bug 384540] KDE applications segfault when XLIB_SKIP_ARGB_VISUALS is defined

[Kai Uwe Broulik]

https://bugs.kde.org/show_bug.cgi?id=384540

--- Comment #8 from Kai Uwe Broulik  ---
Kwrite does not crash with Fusion style at all. It crashes with Oxygen and
Breeze as soon as a tooltip appears.

Better backtrace:

Thread 1 "dolphin" received signal SIGSEGV, Segmentation fault.
#0  qglx_findConfig (display=display@entry=0x64aae0, screen=screen@entry=0,
format=..., highestPixelFormat=highestPixelFormat@entry=false,
drawableBit=drawableBit@entry=1)
at qglxconvenience.cpp:206
#1  0x77fec1f4 in qglx_findVisualInfo (display=0x64aae0,
screen=screen@entry=0, format=format@entry=0xa82310,
drawableBit=drawableBit@entry=1) at qglxconvenience.cpp:233
#2  0x77fe768d in QXcbGlxWindow::createVisual (this=0xa822b0) at
qxcbglxwindow.cpp:61
#3  0x7fffe4827f4c in QXcbWindow::create (this=0xa822b0) at
qxcbwindow.cpp:424
#4  0x7fffe480ee2f in QXcbIntegration::createPlatformWindow
(this=, window=0xa81d20) at qxcbintegration.cpp:205
#5  0x7275c4e1 in QWindowPrivate::create (this=0xa81d80,
recursive=recursive@entry=false, nativeHandle=nativeHandle@entry=0) at
kernel/qwindow.cpp:438
#6  0x7275c83f in QWindow::create (this=this@entry=0xa81d20) at
kernel/qwindow.cpp:619
#7  0x72d16304 in QWidgetPrivate::create_sys (this=this@entry=0xa81620,
window=window@entry=0, initializeWindow=initializeWindow@entry=true, 
destroyOldWindow=destroyOldWindow@entry=true) at kernel/qwidget.cpp:1478
#8  0x72d15909 in QWidget::create (this=this@entry=0xa815e0,
window=window@entry=0, initializeWindow=initializeWindow@entry=tr
at kernel/qwidget.cpp:1338
#9  0x72d15c92 in QWidgetPrivate::createWinId (this=) at
kernel/qwidget.cpp:2581
#10 0x72d165eb in QWidget::createWinId (this=) at
kernel/qwidget.cpp:2600
#11 0x74624abf in KToolTipWidget::KToolTipWidget(QWidget*) () from
/usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#12 0x774d7a7e in ?? () from
/usr/lib/x86_64-linux-gnu/libdolphinprivate.so.5
#13 0x774cc8d2 in DolphinView::DolphinView(QUrl const&, QWidget*) ()
from /usr/lib/x86_64-linux-gnu/libdolphinprivate.so.5

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[plasmashell] [Bug 384540] KDE applications segfault when XLIB_SKIP_ARGB_VISUALS is defined

[Tristan Miller]

https://bugs.kde.org/show_bug.cgi?id=384540

--- Comment #7 from Tristan Miller  ---
When I set my widget style to Fusion or MS Windows 9x, I am no longer able to
trigger the crash using the method described in my OP (i.e., launching Okular
and then activating a pull-down menu).  However, like Kai, Dolphin consistently
crashes on launch no matter what widget style is selected.

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[plasmashell] [Bug 384540] KDE applications segfault when XLIB_SKIP_ARGB_VISUALS is defined

[Kai Uwe Broulik]

https://bugs.kde.org/show_bug.cgi?id=384540

Kai Uwe Broulik  changed:

   What|Removed |Added

 CC||k...@privat.broulik.de

--- Comment #6 from Kai Uwe Broulik  ---
I can reproduce also with Fusion and Windows style. It seems to be QToolTip
causing this.
When I start Dolphin or System Settings they crash right away when creating a
KToolTipWidget whereas Okular crashes as soon as I hover a tool button which
spawns a QToolTip.

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[plasmashell] [Bug 384540] KDE applications segfault when XLIB_SKIP_ARGB_VISUALS is defined

[David Edmundson]

https://bugs.kde.org/show_bug.cgi?id=384540

--- Comment #5 from David Edmundson  ---
It seems to be the breeze qstyle which is the difference.

Can you set to "Fusion" (which is a much simpler one) and confirm?

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[plasmashell] [Bug 384540] KDE applications segfault when XLIB_SKIP_ARGB_VISUALS is defined

[Tristan Miller]

https://bugs.kde.org/show_bug.cgi?id=384540

--- Comment #4 from Tristan Miller  ---
(In reply to David Edmundson from comment #1)
> Then don't set that flag...

On further investigation, it seems that the vanilla Emacs distribution does not
set this environment variable.  Rather, it is set by a wrapper script included
in the Emacs package from openSUSE (and possibly other distributions).  I've
asked downstream about the purpose of this flag and whether it can be removed
pending a fix for this issue:
https://bugzilla.opensuse.org/show_bug.cgi?id=1057971

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[plasmashell] [Bug 384540] KDE applications segfault when XLIB_SKIP_ARGB_VISUALS is defined

[Tristan Miller]

https://bugs.kde.org/show_bug.cgi?id=384540

--- Comment #3 from Tristan Miller  ---
(In reply to David Edmundson from comment #2)
> Edit.
> As it's the menu it could be the plasma-integration qpt acting as the
> difference.
> 
> If you unset any env vars that mention KDE and it goes away please reassign
> to plasma-integration.

Even with those environment variables unset (or indeed, with all environment
variables unset), I can still reproduce the issue.

I can report the issue to Qt, but it does seem strange than the problem is
reproducible only when running KDE applications through Plasma.  As I
mentioned, I haven't been able to reproduce the issue when running non-KDE Qt
applications, nor when running any applications (KDE, Qt, or other) on other
desktop environments.

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[plasmashell] [Bug 384540] KDE applications segfault when XLIB_SKIP_ARGB_VISUALS is defined

[David Edmundson]

https://bugs.kde.org/show_bug.cgi?id=384540

David Edmundson  changed:

   What|Removed |Added

 Status|RESOLVED|UNCONFIRMED
 Resolution|UPSTREAM|---

--- Comment #2 from David Edmundson  ---
Edit.

As it's the menu it could be the plasma-integration qpt acting as the
difference.

If you unset any env vars that mention KDE and it goes away please reassign to
plasma-integration.

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[plasmashell] [Bug 384540] KDE applications segfault when XLIB_SKIP_ARGB_VISUALS is defined

[David Edmundson]

https://bugs.kde.org/show_bug.cgi?id=384540

David Edmundson  changed:

   What|Removed |Added

 Resolution|--- |UPSTREAM
 CC||k...@davidedmundson.co.uk
 Status|UNCONFIRMED |RESOLVED

--- Comment #1 from David Edmundson  ---
Then don't set that flag...

But in any case, the bug isn't with plasmashell, from your own report okular is
crashing too.

Please report to Qt

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[plasmashell] [Bug 384540] KDE applications segfault when XLIB_SKIP_ARGB_VISUALS is defined

[Tristan Miller]

https://bugs.kde.org/show_bug.cgi?id=384540

Tristan Miller  changed:

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   See Also||https://bugs.kde.org/show_b
   ||ug.cgi?id=376990

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