Re: Linux kernel: powerpc: KVM guest can trigger host crash on Power8
- To: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
- Cc: Michael Ellerman <mpe@ellerman.id.au>, "debian-powerpc@lists.debian.org" <debian-powerpc@lists.debian.org>, linuxppc-dev@lists.ozlabs.org
- Subject: Re: Linux kernel: powerpc: KVM guest can trigger host crash on Power8
- From: Michal Suchánek <msuchanek@suse.de>
- Date: Mon, 1 Nov 2021 18:36:01 +0100
- Message-id: <[🔎] 20211101173601.GM11195@kunlun.suse.cz>
- In-reply-to: <8123f71a-3db3-0a5d-c1b0-59dce2df154c@physik.fu-berlin.de>
- References: <87pmrtbbdt.fsf@mpe.ellerman.id.au> <05b88724-90b6-a38a-bb3b-7392f85c1934@physik.fu-berlin.de> <878ryfavaz.fsf@mpe.ellerman.id.au> <04864fe5-fdd0-74b2-2bad-0303e4c2b15a@physik.fu-berlin.de> <874k92bubv.fsf@mpe.ellerman.id.au> <c21c7a0e-95f1-e6d2-a04c-fb99d801e8da@physik.fu-berlin.de> <878rydac0d.fsf@mpe.ellerman.id.au> <87b1404f-7805-da29-4899-6ab9459e5364@physik.fu-berlin.de> <9ed788c0-b99b-f327-0814-a2d92db6bd8b@physik.fu-berlin.de> <8123f71a-3db3-0a5d-c1b0-59dce2df154c@physik.fu-berlin.de>
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
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