kernel panics at google

[Manfred Spraul]

David desJardins wrote:
> 
> 
> If I'm interpreting the kernel oops correctly, the error occurs in
> tcp_retrans_try_collapse.  I've attached below the oops, after
> attempting to run it through ksymoops. (I think I got the right
> symbols, but I'm not absolutely certain.)
> 
How much memory is installed?
I assume 256 MB or more.

> These systems are running 2.2.13 with some patches.

> 
> >>EIP: c0158892 <tcp_retrans_try_collapse+3a/208>
> Trace: c01462cb <__kfree_skb+97/a0>
> Trace: c0158be7 <tcp_retransmit_skb+a3/164>
> Trace: c0158d0d <tcp_xmit_retransmit_queue+65/e4>

tcp_retransmit_try_collapse is called with 

	skb->next == NULL

tcp_retrans_try_collapse dereferences skb->next --> oops.

Unfortunately, I have no idea why this happened.
--
	Manfred

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