[lkml]   [1997]   [Jul]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Bug#10954: Kernel panic: skpush:under (fwd) wrote:
> Phil Karn <> writes:
> >This morning my machine panicked with the following on the console:
> >
> >Kernel panic: skpush:under: 0014140c:84772916
> >In swapper task - not syncing
> >
> >According to my symbol table and my reading of the source code, this
> >came from a call to skb_push() from within packet_rcv(). packet_rcv
> >is at 001413c8 and packet_sendmsg is at 00141484.
> This indicates that either some device driver blew it when
> setting up the ethernet headers on an incoming packet.
> >The machine has two Ethernet interfaces, a 3C590 and a NE2000.
> >It's used as an IP router with a fairly complex configuration; both
> >IP masquerading and IP-in-IP tunneling are used. At the time of
> >the crash I had tcpdump running on the NE2000 interface.
> Can you give me a bit more information about this setup?
> My first guess is that the tunneling code is the culprit,
> but it's a bit late for me to go digging yet tonight.

I've seen this happen quite a bit after a fragmented packet is
re-assembled and put through the de-tunneler and then passed back
down to be 're-received'. This is especially the case when bridging
was in the mix too. I sent a patch to Alan to fix this with the
bridging for 2.0 a couple of months ago.
- It looks like a similar problem here.


 \ /
  Last update: 2005-03-22 13:39    [W:0.038 / U:3.492 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site