On Tue, 2020-11-17 at 19:28 +0000, Valentin Schneider wrote: > We did have some breakage in that area, but all the holes I was aware of > have been plugged. What would help here is to see which tasks are still > queued on that outgoing CPU, and their recent activity. > > Something like > - ftrace_dump_on_oops on your kernel cmdline > - trace-cmd start -e 'sched:*' > <start the test here> > > ought to do it. Then you can paste the (tail of the) ftrace dump. > > I also had this laying around, which may or may not be of some help:
Once I have found a reliable reproducer, I'll report back.
