Re: [Xen-devel] Recent cores-scheduling failures

[Jürgen Groß <jgross@xxxxxxxx>]

On 19.12.19 13:45, Sergey Dyasli wrote:
> Hi Juergen,
>
> We recently did another quick test of core scheduling mode, and the following
> failures were found:
>
> 1. live-patch apply failures:
>
>      (XEN) [ 1058.751974] livepatch: lp_1_1: Timed out on semaphore in CPU 
> quiesce phase 30/31
>      (XEN) [ 1058.751982] livepatch: lp_1_1 finished REPLACE with rc=-16
>
> 2. ACPI S5 crash:
>
>      https://paste.debian.net/1121748/
So in sched_slave() *vprev is already scrubbed.

I have currently no idea how that could happen, is vprev->is_running
should be cleared only a little bit later.

Will look into it more..


Juergen

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