Re: [BUG] NOHZ tick-stop error: local softirq work is pending

[Frederic Weisbecker <frederic@kernel.org>]

Le Sun, Sep 10, 2023 at 03:21:33AM -0700, Paul E. McKenney a écrit :
> On Sat, Sep 09, 2023 at 10:28:36PM -0400, Joel Fernandes wrote:
> > Hi Paul, Frederic, ever since this recent patch got merged into all
> > recent stables:
> > https://lore.kernel.org/all/20230818200757.1808398-1-paul.gortmaker@windriver.com/
> >  ..
> > 
> > .. I am seeing this happen a lot now causing rcutorture failures:
> > "NOHZ tick-stop error: local softirq work is pending"
> > 
> > It looks like the "tick-stop error" as local_bh_blocked always returns
> > false on !PREEMPT_RT, so that patch itself seems correct.
> > 
> > However, it appears the string in console-badness.sh is different:
> > 
> > console-badness.sh:grep -v 'NOHZ tick-stop error: Non-RCU local
> > softirq work is pending, handler'
> > 
> > So the string in the script needs an update?
> 
> Looks like it, though I believe that there is a fix in the offing,
> at which point that "grep -v" should just be removed.  Depending on
> timing, of course.

Yep I have a pending fix for that, will post soonish. The grep will still
make sense afterward though.

Thanks.