Linux kernel: powerpc: KVM guest can trigger host crash on Power8

[Michal Suchánek]

Hello,

On Thu, Oct 28, 2021 at 04:15:19PM +0200, John Paul Adrian Glaubitz wrote:
> Hi!
> 
> On 10/28/21 16:05, John Paul Adrian Glaubitz wrote:
> > The following packages were being built at the same time:
> > 
> > - guest 1: virtuoso-opensource and openturns
> > - guest 2: llvm-toolchain-13
> > 
> > I really did a lot of testing today with no issues and just after I sent my report
> > to oss-security that the machine seems to be stable again, the issue showed up :(.
> 
> Do you know whether IPMI features any sort of monitoring for capturing the output
> of the serial console non-interactively? This way I would be able to capture the
> crash besides what I have seen above.

I am pretty sure you can run something like

script ipmitool

to capture output indefinitely, and the same inside screen on a remote
machine.

Thanks

Michal