netdev - Re: [PATCH net-next] sit: proper dev_{hold|put} in ndo

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Message-ID: <YRqAsjXuKeOOiIU9@irc-clt.no.as208627.net>
Date:   Mon, 16 Aug 2021 17:13:54 +0200
From:   Alarig Le Lay <alarig@...rdarmor.fr>
To:     Eric Dumazet <edumazet@...gle.com>
Cc:     "Wong, Vee Khee" <vee.khee.wong@...el.com>,
        "eric.dumazet@...il.com" <eric.dumazet@...il.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "syzkaller@...glegroups.com" <syzkaller@...glegroups.com>,
        "Ismail, Mohammad Athari" <mohammad.athari.ismail@...el.com>
Subject: Re: [PATCH net-next] sit: proper dev_{hold|put} in ndo_[un]init
 methods

Hi,

On Wed 31 Mar 2021 07:58:07 GMT, Eric Dumazet wrote:
> On Wed, Mar 31, 2021 at 2:01 AM Wong, Vee Khee <vee.khee.wong@...el.com> wrote:
> >
> > Hi all,
> >
> >
> >
> > This patch introduced the following massive warnings printouts on a
> >
> > Intel x86 Alderlake platform with STMMAC MAC and Marvell 88E2110 PHY.
> >
> >
> >
> > [  149.674232] unregister_netdevice: waiting for sit0 to become free. Usage count = 2
> 
> Same answer than the other thread :
> 
> Nope, I already have a fix, but it depends on a pending patch.
> 
> https://patchwork.kernel.org/project/netdevbpf/patch/20210330064551.545964-1-eric.dumazet@gmail.com/
> 
> (I need the patch being merged to add a corresponding Fixes: tag)
> 
> You can try the attached patch :

I’ve upgraded some boxes to 4.14.240 which includes the fix, but I have
> unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 
every ten seconds.

It’s not the same interface name nor the same count, so perhaps there is
another issue with the patches?

Regards,
-- 
Alarig Le Lay