Re: [Xen-users] Possible Xen 4.8 incompatibility with Linux 4.15

[Hans van Kranenburg <hans@xxxxxxxxxxx>]

On 02/05/2018 11:35 AM, Matthieu Cerda wrote:
> Hello folks,
> 
> I just tried testing Xen 4.8 (4.8.3-pre (Debian 4.8.2+xsa245-0+deb9u1),
> Debian stretch packaged version) against Linux 4.15.1, and on reboot the
> dom0 crashed:
> 
> ---8<---
> 
> [...]
> (XEN) d0v0: unhandled page fault (ec=0000)
> (XEN) Pagetable walk from 0000000000000028:
> (XEN)  L4[0x000] = 0000000000000000 ffffffffffffffff
> (XEN) domain_crash_sync called from entry.S: fault at ffff82d080238f3a
> entry.o#create_bounce_frame+0x137/0x146
> (XEN) Domain 0 (vcpu#0) crashed on cpu#0:
> (XEN) ----[ Xen-4.8.3-pre  x86_64  debug=n   Not tainted ]----
> [...]
> (XEN) Guest stack trace from rsp=ffffffff82003e20:
> (XEN)    0000000000000000 0000000000000000 0000000000000000 ffffffff81036199
> [...]
> (XEN) Hardware Dom0 crashed: rebooting machine in 5 seconds.
> (XEN) Resetting with ACPI MEMORY or I/O RESET_REG.
> 
> ---8<---
> 
> Is there a known incompatibility between Xen 4.8 and Linux 4.15 ?

Yes, I believe this is related:

https://lists.xenproject.org/archives/html/xen-devel/2018-02/msg00010.html

https://lists.xenproject.org/archives/html/xen-devel/2018-02/msg00045.html

Hans

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