On Fri, 5 Jul 2019, Pingfan Liu wrote: > I hit a bug on an AMD machine, with kexec -l nr_cpus=4 option. nr_cpus option > is used to speed up kdump process, so it is not a rare case.
But fundamentally wrong, really.
The rest of the CPUs are in a half baken state and any broadcast event,
e.g. MCE or a stray IPI, will result in a undiagnosable crash.
Thanks,
tglx
