Marco Berizziwrote:

Herbert Xu wrote:

quoted

Marco Berizzi [off-list ref] wrote:

quoted

Just few minutes ago, another 2.6.25 crash
with this message:

EIP: [<c028000a>] netif_rx+0x6a/0xd0 SS:ESP 0068:c039f868

http://80.204.235.230/4.jpg

OK, the xfrm_output_resume trail revealed nothing.  Combined
with this crash however, it would appear that you've got a problem
with live skbs being freed.  Unfortunately such problems are
difficult to track down.

Perhaps you could enable SLAB debugging to see if we can get
closer to the culprit?

Yes indeed, I will try next monday.

quoted

Alternatively you could try a git bisection.

Yes, but it could take forever... :-((
As I said, I have removed the sfq and htb modules,
and I would like to wait one week to see if these
boxes will crash. I have 8 linux boxes running 2.6.25
with the same .config and only the two with htb/sfq
qdisc are crashing. Just few minutes ago I have seen
this message forwarded to netdev by David Miller:

Re: PROBLEM: kernel lockup while changing TC rules

it is talking about htb/sfq. Maybe it is related.

quoted

Unless we have a way of reproducing this there isn't a lot more
that we can do I'm afraid.

thanks anyway Herbert.

ok, I can confirm after one week uptime: this problem
is not happening after removing sch_htb/sch_sfq and
cls_fw modules.
What should I do to help track down this problem?