[Bug 104806] plasmashell and other KDE binaries start to segfault after updating Mesa to 18.0.0 (radeon)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104806

--- Comment #10 from Dennis Schridde <devurandom at gmx.net> ---
(In reply to Mike Lothian from comment #3)
> I think this might be a duplicate of Bug 104762, which is fixed in master
> 
> Does deleting the shader caches work around the issue for you?

I tried:
rm -fr ~/.cache/mesa

But that still does not allow me to start e.g. KRunner or KMail.


I managed to restart KWin from a VT, though, so that one might be affected in a
different way.


Sadly the stacktraces of KWin and JetBrains toolbox are not as helpful as that
of KRunner:


Process 24151 (kwin_x11) of user 1000 dumped core.

Stack trace of thread 24151:
#0  0x00007f3ce3235a00 n/a (n/a)


Process 25032 (jetbrains-toolb) of user 1000 dumped core.

Stack trace of thread 25032:
#0  0x00007ff3058fe747 x86_64_fallback_frame_state (libgcc_s.so.1)
#1  0x00007ff3058ffdb0 _Unwind_Backtrace (libgcc_s.so.1)
#2  0x00007ff305637bd8 __backtrace (libc.so.6)
#3  0x000000000048d6d2 n/a
(/tmp/.mount_bHWhBY/usr/share/jetbrains-toolbox/jetbrains-toolbox)
#4  0x00007ff30555dac0 __restore_rt (libc.so.6)
#5  0x00007ff2f86c2e98 tgsi_util_get_inst_usage_mask (radeonsi_dri.so)
#6  0x00007ff2f86ba009 scan_instruction (radeonsi_dri.so)
#7  0x3f80000000000000 n/a (n/a)


I will rebuild KWin with debug symbols and try to repro afterwards, to get a
better stack trace.

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