Bug#914951: 4.19.5 fails to boot as Xen dom0
On 11/29/18 1:20 AM, Hans van Kranenburg wrote:
> Package: src:linux
> Version: 4.19.5-1~exp1
> Severity: normal
>
> Hi,
>
> Latest 4.19 upload fails to boot as Xen dom0.
Copy at
https://lists.xenproject.org/archives/html/xen-devel/2018-11/msg03313.html
But at least if someone else would also report or search for it, we have
this one to point to. :)
> Attached are two serial console output logs. One is starting with Xen
> 4.11 (from debian unstable) as dom0, and the other one without Xen.
>
> [ 2.085543] BUG: unable to handle kernel paging request at
> ffff888d9fffc000
> [ 2.085610] PGD 200c067 P4D 200c067 PUD 0
> [ 2.085674] Oops: 0000 [#1] SMP NOPTI
> [ 2.085736] CPU: 1 PID: 1 Comm: swapper/0 Not tainted
> 4.19.0-trunk-amd64 #1 Debian 4.19.5-1~exp1+pvh1
Ehm, paste fail for this snippet, this is from my 4.19.5-1~exp1+pvh1
with extra Xen (domU) PVH patches. However, the full attached log is
from 4.19.5-1~exp1 which fails in exactly the same way.
> [ 2.085823] Hardware name: HP ProLiant DL360 G7, BIOS P68 05/21/2018
> [ 2.085895] RIP: e030:ptdump_walk_pgd_level_core+0x1fd/0x490
> [...]
>
> The pti=off setting on the PV dom0 kernel is left behind from the time
> when 4.9 failed to boot as Xen dom0 because of the bug handling that.
--
Hans van Kranenburg
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