On Wed, Mar 20, 2019 at 11:50:26PM -0500, Wei Huang wrote: > > > On 3/13/19 3:19 PM, Sean Christopherson wrote: > > ...so that the test doesn't end up in an infinite loop if it fails for > > whatever reason, e.g. SHUTDOWN due to gcc inserting stack canary code > > into ucall() and attempting to derefence a null segment. > > You fix passed on my box. Before I ack it, could you share the failure > case (i.e. the steps to reproduce infinite loop) mentioned above? Hit a triple fault shutdown due to derefencing an invalid fs: selector[1] or because the addresses for the guest are borked[2]. [1] https://patchwork.kernel.org/patch/10851713/ [2] https://patchwork.kernel.org/patch/10851913/
