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List:       kde-bugs-dist
Subject:    [plasmashell] [Bug 348385] plasmashell freezes and consumes 100% of the CPU
From:       Barry Scott <barry () barrys-emacs ! org>
Date:       2015-10-01 10:24:46
Message-ID: bug-348385-17878-Y34jdClBxr () http ! bugs ! kde ! org/
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https://bugs.kde.org/show_bug.cgi?id=348385

--- Comment #35 from Barry Scott <barry@barrys-emacs.org> ---
(In reply to Loïc Yhuel from comment #34)
> (In reply to Barry Scott from comment #33)
> > Sorry the patch does not help. I see exactly the same looping in the
> > plasmashell.
> The patch is there to try to understand which values are wrong.
> > 
> > Why not patch the code that is looping to detect the bad input condition and
> > error out?
> > Either crash or report the error. Isn't better then allow a DoS on
> > plasmashell by using poorly
> > written qml?
> I agree QQuickShaderEffectSource should fail in these cases (width/height
> too big), perhaps we should create a Qt bug for this.

If one of the plasmashell developers can come up with a patch to catch this bug
early I will happily run with it and report back findings. I seem to be able to
trigger this once or twice a day
(I do not not know how).

I would need to know how to identify the code triggering the error detection.
If you can print that into the logs great, otherwise how can I find that answer
with gdb?

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