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Re: [Xen-devel] Crash with nested HVM and Linux v5.1+


  • To: "xen-devel\@lists.xen.org" <xen-devel@xxxxxxxxxxxxx>
  • From: Chris Brannon <cmb@xxxxxxxxx>
  • Date: Wed, 02 Oct 2019 09:50:11 -0700
  • Delivery-date: Wed, 02 Oct 2019 16:50:46 +0000
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  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

Jan Beulich <jbeulich@xxxxxxxx> writes:

> On 21.09.2019 01:14, Sarah Newman wrote:
>> With nestedhvm=1, the L2 HVM guest is either hanging (Xen 4.8) or
>> crashing (Xen 4.12.1) the L1 Xen hypervisor with recent versions of
>> Linux. We
>> isolated the commit to:
>> 
>> commit 093ae8f9a86a974c920b613860f1f7fd5bbd70ab
>> Author: Borislav Petkov <bp@xxxxxxx>
>> Date:   Thu Apr 12 13:11:36 2018 +0200
>
> Thanks for doing the bisection on the Linux side. Would you please also
> provide the actual data about the L1 Xen crash (i.e. a maximum
> verbosity L1 log of a debug build of Xen)? It might also turn out
> helpful if you could provide the corresponding L0 Xen log, assuming you
> have host access.

Typescripts are attached.
typescript-l1.txt contains the log of domain creation on the L1.
typescript-l0.txt contains both the log of domain creation on the L0,
and xl dmesg output from the L0.

Both the L0 and L1 are running debug builds of Xen 4.12.1.

-- Chris

Attachment: typescript-l1.txt
Description: Text document

Attachment: typescript-l0.txt
Description: Text document

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