src/patches/suse-2.6.27.31/patches.arch/s390-02-08-qeth-panic.patch

   1 From: Gerald Schaefer <geraldsc@de.ibm.com>
   2 Subject: qeth: avoid skb_under_panic for malformatted inbound data
   3 References: bnc#434333
   4
   5 Symptom:     kernel dump
   6 Problem:     malformatted inbound packets due to hardware problems
   7 Solution:    make the qeth driver more robust in case of malformatted inbound
   8              packets due to hardware problems, an additional check for
   9              OSN-card-type is added for OSN-type packets.
  10
  11 Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
  12
  13 Acked-by: John Jolly <jjolly@suse.de>
  14 ---
  15
  16  drivers/s390/net/qeth_l2_main.c |   13 ++++++++-----
  17  1 file changed, 8 insertions(+), 5 deletions(-)
  18
  19 Index: linux-sles11/drivers/s390/net/qeth_l2_main.c
  20 ===================================================================
  21 --- linux-sles11.orig/drivers/s390/net/qeth_l2_main.c
  22 +++ linux-sles11/drivers/s390/net/qeth_l2_main.c
  23 @@ -453,12 +453,15 @@ static void qeth_l2_process_inbound_buff
  24                         netif_rx(skb);
  25                         break;
  26                 case QETH_HEADER_TYPE_OSN:
  27 -                       skb_push(skb, sizeof(struct qeth_hdr));
  28 -                       skb_copy_to_linear_data(skb, hdr,
  29 +                       if (card->info.type == QETH_CARD_TYPE_OSN) {
  30 +                               skb_push(skb, sizeof(struct qeth_hdr));
  31 +                               skb_copy_to_linear_data(skb, hdr,
  32                                                 sizeof(struct qeth_hdr));
  33 -                       len = skb->len;
  34 -                       card->osn_info.data_cb(skb);
  35 -                       break;
  36 +                               len = skb->len;
  37 +                               card->osn_info.data_cb(skb);
  38 +                               break;
  39 +                       }
  40 +                       /* else unknown */
  41                 default:
  42                         dev_kfree_skb_any(skb);
  43                         QETH_DBF_TEXT(TRACE, 3, "inbunkno");