From: David Miller <davem@davemloft.net>
To: william.allen.simpson@gmail.com
Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
akpm@linux-foundation.org, andi@firstfloor.org
Subject: Re: [PATCH v5 3/7] tcp: harmonize tcp_vx_rcv header length assumptions
Date: Wed, 17 Feb 2010 15:47:34 -0800 (PST) [thread overview]
Message-ID: <20100217.154734.177239957.davem@davemloft.net> (raw)
In-Reply-To: <4B77953C.7070908@gmail.com>
From: William Allen Simpson <william.allen.simpson@gmail.com>
Date: Sun, 14 Feb 2010 01:16:28 -0500
> @@ -1559,7 +1559,8 @@ int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb)
> return 0;
> }
>
> - if (skb->len < tcp_hdrlen(skb) || tcp_checksum_complete(skb))
> + /* Assumes header and options unchanged since checksum_init() */
> + if (tcp_checksum_complete(skb))
> goto csum_err;
>
Not true.
The skb->len can be modified by the call to sk_filter() done
by tcp_v4_rcv().
next prev parent reply other threads:[~2010-02-17 23:47 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-14 6:01 [PATCH 0/7] tcp: bugs and cleanup updated to 2.6.33-rc8 William Allen Simpson
2010-02-14 6:05 ` [PATCH v3 1/7] net: tcp_header_len_th and tcp_option_len_th William Allen Simpson
2010-02-14 6:09 ` [PATCH v3 2/7] net: remove old tcp_optlen function William Allen Simpson
2010-02-17 23:43 ` David Miller
2010-02-14 6:16 ` [PATCH v5 3/7] tcp: harmonize tcp_vx_rcv header length assumptions William Allen Simpson
2010-02-17 23:47 ` David Miller [this message]
2010-02-14 6:21 ` [PATCH v4 4/7] tcp: input header length, prediction, and timestamp bugs William Allen Simpson
2010-02-17 23:50 ` David Miller
2010-02-14 6:26 ` [PATCH v3 5/7] TCPCT part 2e: accept SYNACK data William Allen Simpson
2010-02-14 6:41 ` [PATCH v4 6/7] TCPCT part 2f: cleanup tcp_parse_options William Allen Simpson
2010-02-14 7:02 ` [PATCH v6 7/7] TCPCT part 2g: parse cookie pair and 64-bit timestamp William Allen Simpson
-- strict thread matches above, loose matches on Subject: below --
2010-02-25 20:30 [PATCH 0/7] tcp: bugs and cleanup for 2.6.33 William Allen Simpson
2010-02-25 20:44 ` [PATCH v5 3/7] tcp: harmonize tcp_vx_rcv header length assumptions William Allen Simpson
2010-02-15 12:23 [PATCH 0/7] tcp: bugs and cleanup updated to 2.6.33-rc8 (again) William Allen Simpson
2010-02-15 12:28 ` [PATCH v5 3/7] tcp: harmonize tcp_vx_rcv header length assumptions William Allen Simpson
2010-02-15 12:48 ` Andi Kleen
2010-02-15 12:59 ` William Allen Simpson
2010-02-02 16:08 [PATCH 0/7] tcp: bugs and cleanup updated to 2.6.33-rc6 William Allen Simpson
2010-02-02 16:24 ` [PATCH v5 3/7] tcp: harmonize tcp_vx_rcv header length assumptions William Allen Simpson
2010-01-23 5:27 [PATCH 0/7] tcp: bugs and cleanup updated to 2.6.33-rc5 William Allen Simpson
2010-01-23 5:56 ` [PATCH v5 3/7] tcp: harmonize tcp_vx_rcv header length assumptions William Allen Simpson
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