netdev - Re: [RESEND] [PATCH] tcp: fix for splice receive when used with software LRO

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] [day] [month] [year] [list]

Message-Id: <20080627.172736.147638545.davem@davemloft.net>
Date:	Fri, 27 Jun 2008 17:27:36 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	opurdila@...acom.com
Cc:	netdev@...r.kernel.org
Subject: Re: [RESEND] [PATCH] tcp: fix for splice receive when used with
 software LRO

From: Octavian Purdila <opurdila@...acom.com>
Date: Wed, 18 Jun 2008 19:07:16 +0300

>     tcp: fix for splice receive when used with software LRO
>     
>     If an skb has nr_frags set to zero but its frag_list is not empty (as
>     it can happen if software LRO is enabled), and a previous
>     tcp_read_sock has consumed the linear part of the skb, then
>     __skb_splice_bits:
>     
>     (a) incorrectly reports an error and
>     
>     (b) forgets to update the offset to account for the linear part
>     
>     Any of the two problems will cause the subsequent __skb_splice_bits
>     call (the one that handles the frag_list skbs) to either skip data,
>     or, if the unadjusted offset is greater then the size of the next skb
>     in the frag_list, make tcp_splice_read loop forever.
>     
>     Signed-off-by: Octavian Purdila <opurdila@...acom.com>

Applied, th anks Octavian.
--
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