Re: net: lockdep warning in ip_mc_msfget (net/ipv4/igmp.c:2400)

[Marcelo Ricardo Leitner]

Em 02-11-2015 22:38, Cong Wang escreveu:
> On Mon, Nov 2, 2015 at 1:31 PM, Cong Wang <cwang@xxxxxxxxxxxxxxxx> wrote:
> > Good catch!
> >
> > This is probably introduced by:
> >
> > commit baf606d9c9b12517e47e0d1370e8aa9f7323f210
> > Author: Marcelo Ricardo Leitner <marcelo.leitner@xxxxxxxxx>
> > Date:   Wed Mar 18 14:50:42 2015 -0300
> >
> >      ipv4,ipv6: grab rtnl before locking the socket

Yes, that commit introduced this inverse order situation by not fixing 
the get path of it.

> > I am thinking what is the right way to fix it...
>
> Please try the attached patch.
>
> Thanks!

Patch LGTM, same design and covered all rtnl_lock()s I could find on get 
path now. Thanks!

  Marcelo

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