[Bug 268327] graphics/mesa-dri: 22.3.0 breaks direct rendering (radeon, SUMO, r600_dri)

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268327

Florian Walpen <dev@submerge.ch> changed:

           What    |Removed                     |Added
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                 CC|                            |dev@submerge.ch

--- Comment #16 from Florian Walpen <dev@submerge.ch> ---
Same here with REDWOOD, FirePro V4800, two screens, 13.1-RELEASE.

I also get segfaults with mesa 22.3.x, both Xorg and wayland crash immediately.
Did not get any useful debug stacktrace, only the crash handler of Xorg shows
up. Neither does the Xorg log tell anything, it just says segfault.

As a hint for testing, I can provoke the crash with mesa-22.2.3 and mesa-devel
installed additionally. Which is easier to test and bisect as there are no
dependencies, and reverting it is just "pkg delete mesa-devel".

I was able to bisect the crash in my case to this commit in mesa:

https://gitlab.freedesktop.org/mesa/mesa/-/commit/7662a5e9d34515bd44a97b3726490f31490b57c6

Unfortunately I don't know what to make of it. The commit just removes some
obsolete functionality, which may trigger a different path or leave something
uninitialized.

Furthermore, there's something which broke rendering prior to this commit -
with the screen just left blank. Couldn't bisect that one yet.

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