(no subject)

[Chris Boot]

Hi,

I've just seen the following assertions pop out of one of my servers  
running 2.6.16.9 with grsecurity. I've searched the archives of LKML  
and netdev and I've only found posts relating to 2.6.9, after which  
some related bugs were fixed... It looks like these bugs are related  
to e1000, which is the driver I'm using. The system was running 24  
days before these appeared and it's still running absolutely fine.

May 16 09:15:12 baldrick kernel: [6442250.504000] KERNEL: assertion (! 
sk->sk_forward_alloc) failed at net/core/stream.c (283)
May 16 09:15:12 baldrick kernel: [6442250.513000] KERNEL: assertion (! 
sk->sk_forward_alloc) failed at net/ipv4/af_inet.c (150)

baldrick bootc # ethtool -k eth0
Offload parameters for eth0:
rx-checksumming: on
tx-checksumming: on
scatter-gather: on
tcp segmentation offload: on

Many thanks,
Chris

PS: I'm not subscribed to netdev.

-- 
Chris Boot
bootc@bootc.net
http://www.bootc.net/

Re:

[Arnaldo Carvalho de Melo]

On 5/16/06, Chris Boot <bootc@bootc.net> wrote:
> Hi,
>
> I've just seen the following assertions pop out of one of my servers
> running 2.6.16.9 with grsecurity. I've searched the archives of LKML
> and netdev and I've only found posts relating to 2.6.9, after which
> some related bugs were fixed... It looks like these bugs are related
> to e1000, which is the driver I'm using. The system was running 24
> days before these appeared and it's still running absolutely fine.
>
> May 16 09:15:12 baldrick kernel: [6442250.504000] KERNEL: assertion (!
> sk->sk_forward_alloc) failed at net/core/stream.c (283)
> May 16 09:15:12 baldrick kernel: [6442250.513000] KERNEL: assertion (!
> sk->sk_forward_alloc) failed at net/ipv4/af_inet.c (150)
>
> baldrick bootc # ethtool -k eth0
> Offload parameters for eth0:
> rx-checksumming: on
> tx-checksumming: on
> scatter-gather: on
> tcp segmentation offload: on

I guess just disable TSO or use latest kernel from git, it has a fix for this.

- Arnaldo