Re: lockdep splat in v5.11-rc1 involving console_sem and rq locks

From: Paul E. McKenney
Date: Wed Jan 06 2021 - 12:53:57 EST


On Wed, Jan 06, 2021 at 03:49:46PM +0000, Valentin Schneider wrote:
> On 06/01/21 16:44, Peter Zijlstra wrote:
> > On Wed, Jan 06, 2021 at 06:46:21AM -0800, Paul E. McKenney wrote:
> >> What would break if I made the code dump out a few entries in the
> >> runqueue if the warning triggered?
> >
> > There was a patch around that did that, Valentin might remember where
> > that was.
>
> There is http://lore.kernel.org/r/jhjpn4bwznx.mognet@xxxxxxx which is a
> dumb inline of print_rq() / print_task().

Thank you both! I will add this to the next round of testing.

Thanx, Paul