Re: [PATCH rcu 6/6] rcu: Allow up to five minutes expedited RCU CPU stall-warning timeouts

From: Paul E. McKenney
Date: Mon Jan 09 2023 - 10:15:18 EST


On Mon, Jan 09, 2023 at 11:10:10AM +0100, Geert Uytterhoeven wrote:
> Hi Paul,
>
> Thanks for your patch, which is now commit 0d49d9123dcf41f7 ("rcu:
> Allow up to five minutes expedited RCU CPU stall-warning timeouts")
> in next-20230109.
>
> On Thu, Jan 5, 2023 at 2:10 AM Paul E. McKenney <paulmck@xxxxxxxxxx> wrote:
> > The maximum value of RCU CPU stall-warning timeouts has historically been
> > five minutes (300 seconds). However, the recently introduced expedited
> > RCU CPU stall-warning timeout is instead limited to 21 seconds. This
> > causes problems for CI/fuzzing services such as syzkaller by obscuring
> > the issue in question with expedited RCU CPU stall-warning timeout splats.
> >
> > This commit therefore sets the RCU_EXP_CPU_STALL_TIMEOUT Kconfig options
> > upper bound to 300000 milliseconds, which is 300 seconds and 5 minutes.
>
> s/and/or/

Good eyes! I will apply with attribution on my next rebase.

Thanx, Paul