Bug#931646: Kmail crashes when I click on mail

[Francis Laniel <francis.laniel@lip6.fr>]

Hello,


Thank your for your fast answer.

Indeed, the NULL value for abstime seems totally unrelated... I was made wrong 
by the trace colored it in red...

I thank your for the links you provided, they are quite interesting.
This a pain that the big seems really complex and I do not have any knowledge 
in DRM and nouveau...
I will go on with the environment variables as workaround if kmail really 
crashes a lot.


Best regards.

Le mardi 9 juillet 2019, 00:19:32 CEST Bernhard Übelacker a écrit :
> Hello Francis Laniel,
> I am just looking at some crashes in some random packages,
> and found this nouveau issue familiar.
> 
> I guess __pthread_cond_wait_common should be able to
> handle a NULL for abstime - e.g. should "Block without a timeout".
>    
> https://sources.debian.org/src/glibc/2.28-10/nptl/pthread_cond_wait.c/#L499
> 
> There are also some many more bugs reported that all end with these
> nouveau_pushbuf_kick/nouveau_pushbuf_data calls triggering
> that "Assertion `kref' failed.", that might be related:
>     https://bugs.debian.org/927954
>     https://bugs.debian.org/929130
>     https://bugs.freedesktop.org/show_bug.cgi?id=91632
>     https://bugs.freedesktop.org/show_bug.cgi?id=98039
>     https://bugzilla.redhat.com/show_bug.cgi?id=1350275
>     https://bugs.archlinux.org/task/59057
>     https://bugreports.qt.io/browse/QTBUG-41242
> 
> The last one mentions as a workaround setting an
> environment variable LIBGL_ALWAYS_SOFTWARE=1 or
> QT_XCB_FORCE_SOFTWARE_OPENGL=1, maybe on of these still helps?
> 
> Kind regards,
> Bernhard