IP layer bug?

Oleg Drokin
2001-03-24T21:58:47Z

Hello!

2.4.x kernel. have not tried 2.2
I just found somethig, I believe is kernel bug.
I am working with usbnet.c driver, which stores some of its
internal state in sk_buff.cb area. But once such skb passed to
upper layer with netif_rx, net/ipv4/ip_input.c reuses content of cb
(line #345), and all packets that should go outside of beyond hosts
we have direct routes to, fails, because we think, they have source routing
enabled.
For now I workarounded it with filling skb->cb with zeroes before
netif_rx(), but I believe it is a kludge and networking layer should be fixed
instead.

Thank you.

Bye,
Oleg