[Bug 109695] qemu using spice gl and sandbox resourcecontrol=deny crashes with SIGSYS on radeonsi

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109695

--- Comment #7 from Marek Olšák <maraeo at gmail.com> ---
(In reply to Daniel P. Berrange from comment #4)
> I'm curious what motivated this change to start with ?  Even if QEMU was not
> enforcing seccomp filters, I think I'd consider it a bug for mesa to be
> setting its process affinity in this way.  The mgmt application or sysadmin
> has decided that the process must have a certain affinity, based on how
> it/they want the host CPUs utilized. Why is mesa wanting to override this
> administrative policy decision to restrict CPU usage ?

The correct solution is to fix pthread_setaffinity such that it returns an
error code instead of crashing.

An even better solution would be to have a virtual thread affinity that only
the application can see and change, which should be silently masked by
administrative policies not visible to the application.

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