M. Koehrer wrote:
> Hi Jan,
> 
> enclosed is the output of this experiment.
> I have removed all patches from last week before applying the new patch.
> 

This BUG look now very different from your previous issue. Are you sure
you build is consistent? Maybe the not-yet-backported IPI bug over
x86_64 actually cause this heisenbug, don't know.

Well, if and only if you have nothing better to do ;), you could retry,
starting a test with a patch-free tree, then switching on the tracer and
testing again, and finally re-applying my last patch. But we may also
wait for Philippe to provide the IPI fix first.

Jan