Re: [PATCH v4][RESEND x4] lockdep: fix deadlock issue between lockdep and rcu

[Peter Zijlstra]

On Wed, Jun 26, 2024 at 03:15:14PM -0700, Boqun Feng wrote:
> On Tue, Jun 25, 2024 at 07:38:15AM -0700, Paul E. McKenney wrote:
> > On Thu, Jun 20, 2024 at 10:54:34PM +0000, Carlos Llamas wrote:
> > > From: Zhiguo Niu <zhiguo.niu@xxxxxxxxxx>
> > > 
> > > There is a deadlock scenario between lockdep and rcu when
> > > rcu nocb feature is enabled, just as following call stack:
> > 
> > I have pulled this into -rcu for further review and testing.
> > 
> > If someone else (for example, the lockdep folks) would like to take this:
> > 
> > Acked-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
> > 
> 
> FWIW, I add this patch and another one [1] to my tree:
> 
> 	git://git.kernel.org/pub/scm/linux/kernel/git/boqun/linux.git lockdep
> 
> (based on today's tip/locking/core)
> 
> I figured I have time to handle lockdep-only patches, which shouldn't
> be a lot. So Ingo & Peter, I'm happy to help. If you need me to pick up
> lockdep patches and send a PR against tip/master or tip/locking/core,
> please let me know.

Sorry, I've been hopelessly behind on everything. Yes it would be nice
if you could help vacuum up some of the lockdep patches.