lkml.org 
[lkml]   [2020]   [Jun]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: 5.7.0 / BUG: kernel NULL pointer dereference / setup_cpu_watcher
On Fri, 5 Jun 2020, Jürgen Groß wrote:
> Do you happen to start the guest with vcpus < maxvcpus?

Indeed, I was booting with vcpus=2, maxvcpus=4. Setting both to the same
value made the domU boot.

> If yes there is already a patch pending for 5.8:
> https://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git/commit/?h=for-linus-5.8&id=c54b071c192dfe8061336f650ceaf358e6386e0b

Applied that manually and now the system boots even with vcpus < maxvcpus.
So, if this still matters:

Tested-by: Christian Kujau <lists@nerdbynature.de>

Thank you for your response, and the fix!

Christian.
--
BOFH excuse #146:

Communications satellite used by the military for star wars.

\
 
 \ /
  Last update: 2020-06-05 20:03    [W:0.054 / U:0.428 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site