netdev - Re: [Bugme-new] [Bug 9543] New: RTNL: assertion failed at net/ipv6/addrconf.c (2164)/RTNL: assertion failed at net/ipv4/devinet.c (1055)

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Date:	Sat, 15 Dec 2007 10:09:28 -0500
From:	"Andy Gospodarek" <andy@...yhouse.net>
To:	"Herbert Xu" <herbert@...dor.apana.org.au>
Cc:	"Krzysztof Oledzki" <olel@....pl>,
	"Jay Vosburgh" <fubar@...ibm.com>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	bugme-daemon@...zilla.kernel.org, shemminger@...ux-foundation.org,
	davem@...emloft.net, netdev@...r.kernel.org
Subject: Re: [Bugme-new] [Bug 9543] New: RTNL: assertion failed at net/ipv6/addrconf.c (2164)/RTNL: assertion failed at net/ipv4/devinet.c (1055)

On Dec 14, 2007 11:10 PM, Herbert Xu <herbert@...dor.apana.org.au> wrote:
> On Fri, Dec 14, 2007 at 05:47:22PM -0500, Andy Gospodarek wrote:
> >
> > I'm guessing if we go back to using a write-lock for bond->lock this
> > will go back to working again, but I'm not totally convinced since there
> > are plenty of places where we used a read-lock with it.
>
> Sorry I forgot to cc you earlier Andy.
>
> But to fix this you need make sure that all read locks on bond->lock
> in process context disable BH.  This is because at least one write
> lock can be taken from BH context.

I agree with you completely, Herbet, which is why I was surprised that
my first apparently did not resolve the issue.  I felt it should
have....

> You don't need to turn the read locks into write locks however.
>
> This is also something that we can undo once the set_multicast
> interface has been fixed to not take the tx lock.
>
> Cheers,
> --
> Visit Openswan at http://www.openswan.org/
> Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
> Home Page: http://gondor.apana.org.au/~herbert/
> PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
>
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