On 17.05.22 21:41, Andrew Cooper wrote:
c/s cfc52148444f ("xen/domain: Reduce the quantity of initialisation for system domains") removed the path in domain_create() which called sched_init_domain() with CPUPOOLID_NONE for system domains.Arguably, that changeset should have cleaned up this path too. However, c/s 92ea9c54fc81 ("arm/dom0less: assign dom0less guests to cpupools") changed domain_create() from using a hardcoded poolid of 0, to using a value passed by the toolstack. While CPUPOOLID_NONE is an internal constant, userspace can pass -1 for the cpupool_id parameter and attempt to construct a real domain using default ops, which at a minimum will fail the assertion in dom_scheduler(). Fixes: 92ea9c54fc81 ("arm/dom0less: assign dom0less guests to cpupools") Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
Reviewed-by: Juergen Gross <jgr...@suse.com> Juergen
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