[Xen-devel] [PATCH] skb_copy_bits() can return err

[Nivedita Singhvi <niv@xxxxxxxxxx>]

skb_copy_bits() can return an err, so have netif_be_start_xmit()
crash informatively..

thanks,
Nivedita


diff -urN 
xen-unstable-0601/linux-2.6.11-xen-sparse/drivers/xen/netback/netback.c 
niv-unstable-0601/linux-2.6.11-xen-sparse/drivers/xen/netback/netback.c
--- xen-unstable-0601/linux-2.6.11-xen-sparse/drivers/xen/netback/netback.c     
2005-05-31 20:12:37.000000000 -0700
+++ niv-unstable-0601/linux-2.6.11-xen-sparse/drivers/xen/netback/netback.c     
2005-06-01 15:20:52.954245318 -0700
@@ -153,7 +153,9 @@
             goto drop;
         skb_reserve(nskb, hlen);
         __skb_put(nskb, skb->len);
-        (void)skb_copy_bits(skb, -hlen, nskb->data - hlen, skb->len + hlen);
+        if (skb_copy_bits(skb, -hlen, nskb->data - hlen, skb->len + hlen)) {
+               BUG();
+       }
         nskb->dev = skb->dev;
         nskb->proto_csum_valid = skb->proto_csum_valid;
         dev_kfree_skb(skb);

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