netdev - Re: [PATCH net v2 05/11] net/mlx5e: use netdev_lockdep_set

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Message-ID: <ad51fbc8a578f9cae51dab7b551619d37d3385c4.camel@nvidia.com>
Date: Mon, 31 Mar 2025 08:01:14 +0000
From: Cosmin Ratiu <cratiu@...dia.com>
To: "stfomichev@...il.com" <stfomichev@...il.com>, "kuba@...nel.org"
	<kuba@...nel.org>
CC: "edumazet@...gle.com" <edumazet@...gle.com>, "netdev@...r.kernel.org"
	<netdev@...r.kernel.org>, "davem@...emloft.net" <davem@...emloft.net>,
	"sdf@...ichev.me" <sdf@...ichev.me>, "pabeni@...hat.com" <pabeni@...hat.com>
Subject: Re: [PATCH net v2 05/11] net/mlx5e: use netdev_lockdep_set_classes

On Thu, 2025-03-27 at 14:05 -0700, Stanislav Fomichev wrote:
> On 03/27, Jakub Kicinski wrote:
> > On Thu, 27 Mar 2025 06:56:53 -0700 Stanislav Fomichev wrote:
> > > Cosmin reports a potential recursive lock warning in [0]. mlx5 is
> > > using register_netdevice_notifier_dev_net which might result in
> > > iteration over entire netns which triggers lock ordering issues.
> > > We know that lower devices are independent, so it's save to
> > > suppress the lockdep.
> > 
> > But mlx5 does not use instance locking, yet, so lets defer this
> > one?
> 
> SG! Maybe the mlx folks can have it as part of their queue mgmt work?
> Cosmin are you ok with adding this to your patch series?

I'll add it to my pending series, thanks!

Cosmin.