TCP MSG_PEEK kernel assertions ...

TCP MSG_PEEK kernel assertions ...

[davef1624]

 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).

 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.

  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.

 Does anybody have any insight into this problem?

 Best regards,
 Dave F


  
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Re: TCP MSG_PEEK kernel assertions ...

[Stephen Hemminger]

On Fri, 09 Mar 2007 16:43:10 -0500
davef1624@aol.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@vger.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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> 
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-- 
Stephen Hemminger <shemminger@linux-foundation.org>