Re: [PATCH 2/2] x86/numa: instance all parsed numa node

From: Thomas Gleixner
Date: Sun Jul 07 2019 - 15:44:55 EST


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