linux-kernel - Re: [RFC PATCH] net: add dataref destructor to sk

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20091117010238.GA10029@gondor.apana.org.au>
Date:	Tue, 17 Nov 2009 09:02:38 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Gregory Haskins <gregory.haskins@...il.com>
Cc:	David Miller <davem@...emloft.net>, ghaskins@...ell.com,
	mst@...hat.com, alacrityvm-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [RFC PATCH] net: add dataref destructor to sk_buff

On Mon, Nov 16, 2009 at 09:22:57AM -0500, Gregory Haskins wrote:
> 
> But really, this is somewhat orthogonal to the original problem, so let
> me see if we can bring it back on topic.  Michael stated that this patch
> in question may be problematic because there are places in the stack
> that can get_page() without also maintaining a reference to the shinfo
> object.  Evgeniy seems to say the opposite.  I am not sure who is right,
> or if I misunderstood one or both of them.  Any thoughts?

There are loads of places where this can happen.  Start with
pskb_expand_head.

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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/