netdev - Re: IPv6: race condition in __ipv6_ifa_notify() and dst

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Message-ID: <20100427155533.GA5709@gondor.apana.org.au>
Date:	Tue, 27 Apr 2010 23:55:33 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Jiri Bohac <jbohac@...e.cz>
Cc:	David Miller <davem@...emloft.net>, yoshfuji@...ux-ipv6.org,
	netdev@...r.kernel.org, shemminger@...tta.com
Subject: Re: IPv6: race condition in __ipv6_ifa_notify() and dst_free() ?

On Tue, Apr 27, 2010 at 05:50:34PM +0200, Jiri Bohac wrote:
>
>   I think that what Herbert is doing is only going to enforce that
>   the ip6_del_rt() is never going to fail, so the dst_free()
>   won't ever be called anyway, right?

Yes I think you're right.  But let's fix the bigger problem first,
and then we can audit this and possibly turn it into a WARN_ON.

Thanks,
-- 
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Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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