On Thu, 2017-03-23 at 08:37 -0700, Paul E. McKenney wrote: > I have not seen this, but my usual question for __synchronize_srcu() > is if some other task is blocked holding srcu_read_lock() for that > same srcu_struct. >
Not as far as I can see - but that was the scenario I was outlining in my second email, I guess. I'll need to reproduce it and a get a fuller view of the system, I only have the "echo w > sysrq-trigger" output right now. Thanks, johannes