linux-kernel - Re: TCP MSG_PEEK kernel assertions ...

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Date:	Mon, 12 Mar 2007 12:22:23 -0700
From:	Stephen Hemminger <shemminger@...ux-foundation.org>
To:	linux-kernel@...r.kernel.org
Subject: Re: TCP MSG_PEEK kernel assertions ...

On Fri, 09 Mar 2007 16:43:10 -0500
davef1624@....com wrote:

> 
>  Hello,
> 
>   I periodically see the following TCP kernel assertion errors in 
> /var/log/message
>   (it does seem that networking is eventually able to recover from these 
> errors):
> 
>   kernel: KERNEL: assertion (flags & MSG_PEEK) failed at net/ipv4/tcp.c 
> (1171)
>   kernel: KERNEL: assertion (flags & MSG_PEEK) failed at net/ipv4/tcp.c 
> (1171)
>   kernel: KERNEL: assertion (tp->copied_seq == tp->rcv_nxt || (flags & 
> (MSG_PEEK | MSG_TRUNC))) failed at net/ipv4/tcp.c (1235)
>   kernel: KERNEL: assertion (flags & MSG_PEEK) failed at net/ipv4/tcp.c 
> (1171)
>   kernel: KERNEL: assertion (tp->copied_seq == tp->rcv_nxt || (flags & 
> (MSG_PEEK | MSG_TRUNC))) failed at net/ipv4/tcp.c (1235)
> 
>   These errors only seem to occur when using the sk98lin (SysKonnect) 
> Network Device Driver,
>   and a Yukon Gigabit Ethernet 10/100/1000Base-T Adapter (from Marvell I 
> believe).
>  (The other NIC cards we're using in-house don't exhibit this issue).

Wrong mailing list. TCP errors should be sent to netdev@...r.kernel.org

>  I've seen postings concerning this issue over the past year or so,
>   but have not seen a clear resolution and/or understanding of the 
> root-cause of this issue.

Also please include more information, like what kernel version and what
other networking features you are using like VLAN's, netfiltering, ...

>   I'm in the process of upgrading my sk98lin network driver to the 
> latest from SysKonnect
>  in an attempt to see if this corrects the problem.

No, that driver is worse, try the skge driver. The sk98lin driver
is headed for removal

>  Does anybody have any insight into this problem?
> 
>  Best regards,
>  Dave F
> 
> 
>   
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-- 
Stephen Hemminger <shemminger@...ux-foundation.org>
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