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

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:


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..


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