[Bug 93848] [sna] Random X-Server crashes and freezes after update

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93848

--- Comment #10 from Chris Wilson <chris at chris-wilson.co.uk> ---
(In reply to M. G. from comment #9)
> Created attachment 121521 [details]
> valgrind log
> 
> OK. I haven't had another crash yet (currently the X server crashes very
> rarely), but I see a lot of invalid read/writes with valgrind (see
> attachment). Are that critical errors that might lead to a segfault?

Not yet. They appear to be noise from not compiling in valgrind support to the
ddx. You should see "SNA compiled for use with valgrind" in both the Xorg.0.log
and the valgrind output. The valgrind support adds markup to the driver
allocations and ioctls that valgrind by itself cannot see (and so tries to
avoid the false positives).

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