[vfio-users] VFIO and random host crashes

[Alex Williamson]

Are you using isolcpus or nohz_full?  I've seen similar lockups (even the
reset button not working) running a slim host with a Win8/NVIDIA VM +
Fedora/IGD VM tuned to try to give the host the minimal resources possible,
but with the VMs overlapping CPUs because I only have a quad-core.  I built
a kernel with various deadlock and watchdog support enabled an in the
process also removed the isolcpus and nohz_full host boot options.  So far
I haven't yet been able to reproduce the hang while I'm watching for it,
but I'm wondering if it had something to do with those kernel options.
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