netdev - Re: [PATCH net-next] net: implement tcp coalescing in tcp_queue

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: <1335990187.22133.636.camel@edumazet-glaptop>
Date:	Wed, 02 May 2012 22:23:07 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Joe Perches <joe@...ches.com>
Cc:	David Miller <davem@...emloft.net>,
	Alexander Duyck <alexander.duyck@...il.com>,
	Alexander Duyck <alexander.h.duyck@...el.com>,
	netdev <netdev@...r.kernel.org>,
	Neal Cardwell <ncardwell@...gle.com>,
	Tom Herbert <therbert@...gle.com>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
	Michael Chan <mchan@...adcom.com>,
	Matt Carlson <mcarlson@...adcom.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Ben Hutchings <bhutchings@...arflare.com>,
	Ilpo Järvinen <ilpo.jarvinen@...sinki.fi>,
	Maciej Żenczykowski <maze@...gle.com>
Subject: Re: [PATCH net-next] net: implement tcp coalescing in
 tcp_queue_rcv()

On Wed, 2012-05-02 at 13:11 -0700, Joe Perches wrote:

> It might be useful to comment that this is/can be initialized to
> false in tcp_try_coalesce via tcp_recv_queue.


> Otherwise this looks like a possibly uninitialized test
> of fragstolen.  Maybe there's a path where tail is null
> in tcp_recv_queue and it's an uninitialized test anyway.

If tcp_queue_rcv() returns 1, fragstolen is initialized in
tcp_try_coalesce().

If tcp_queue_rcv() returns 0, fragstolen content is undefined and we
dont care.

If a compiler or static checker complains, its only their problem.



--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html