On Tue, May 16, 2006 at 11:44:17PM -0700, [EMAIL PROTECTED] wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=6421 > > ------- Additional Comments From [EMAIL PROTECTED] 2006-05-16 23:43 ------- > Another stack trace. skb_padto() is not called. > > May 16 23:50:34 merlin kernel: ei_start_xmit(): entry: skb->data unaligned > fffffc0009b5098b skb fffffc001e763a08 length 66 > May 16 23:50:34 merlin kernel: Badness in ei_start_xmit at > drivers/net/8390.c:283
... > May 16 23:50:34 merlin kernel: Trace: > May 16 23:50:34 merlin kernel: [<fffffc00005670f8>] qdisc_restart+0x88/0x2b0 > May 16 23:50:34 merlin kernel: [<fffffc00005d64b4>] > packet_rcv_spkt+0x1a4/0x3b0 > May 16 23:50:34 merlin kernel: [<fffffc00005566c0>] > dev_queue_xmit_nit+0x1a0/0x1f0 > May 16 23:50:34 merlin kernel: [<fffffc0000567250>] qdisc_restart+0x1e0/0x2b0 > May 16 23:50:34 merlin kernel: [<fffffc0000558f48>] dev_queue_xmit+0xb8/0x3b0 > May 16 23:50:34 merlin kernel: [<fffffc0000560508>] > neigh_resolve_output+0x128/0x370 > May 16 23:50:34 merlin kernel: [<fffffc00005815b4>] ip_output+0x224/0x430 > May 16 23:50:34 merlin kernel: [<fffffc00005800bc>] ip_queue_xmit+0x2dc/0x630 > May 16 23:50:34 merlin kernel: [<fffffc0000596068>] > tcp_transmit_skb+0x588/0xa30 > May 16 23:50:34 merlin kernel: [<fffffc000059bb6c>] > tcp_v4_send_check+0x11c/0x150 > May 16 23:50:34 merlin kernel: [<fffffc0000595f68>] > tcp_transmit_skb+0x488/0xa30 > May 16 23:50:34 merlin kernel: [<fffffc0000597ab0>] > tcp_retransmit_skb+0x730/0x7b0 OK, I think I have a suspect in sight. The unaligned packet is probably caused by tcp_trim_head. To fix it we could just copy the data instead of trimming if it is not paged. However, I'd like you to confirm that this is indeed the cause with a tcpdump. So please take a tcpdump and show us the relevant packets that show up about the time when you get the unaligned warnings. What I'm expecting is a partial odd ACK just before the error. Thanks, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} <[EMAIL PROTECTED]> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt - 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
