Herbert Xu wrote: > On Tue, Jan 16, 2007 at 11:08:51AM +0300, Michael Tokarev wrote: > >>Ok. Here's another trace, from that remote network that triggers >>this thing more-or-less reliable (every 2nd transfer at least) -- >>http://www.corpit.ru/mjt/bh-bad-cksum-dmp.bin . It's a full session >>between 216.168.29.244 - the requesting/receiving side -- and >>81.13.94.6 -- our sending side (the file being transferred is some >>trojan horse I found on a friend's PC, so be careful ;) > > > I'll have a look at this tomorrow. > > Since you're certain that this is being seen on the wire, one > possibility is that we've got a bug somewhere that's zeroing > skb->ip_summed on a packet with a partial checksum. > > One potential spot where this could happen is netfilter. > Patrick, do you know of any recent changes (this is happening > with 2.6.19) that might cause this?
The incremental HW checksum update stuff went in 2.6.19, so thats a prime suspect. Can't see where this could be happening though. Michael, how exactly is netfilter involved in your setup? - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
