On 11/02/2011 11:08 PM, Vasily Averin wrote: > if dst is not local br_handle_frame_finish() does not clone original skb and > forgets to reset IPCB before return to IP stack. it can lead to stack > corruption > in icmp_send()
example of stack corruption http://bugzilla.openvz.org/show_bug.cgi?id=2016 > Signed-off-by: Vasily Averin <v...@sw.ru> > --- > net/bridge/br_input.c | 5 +++-- > 1 files changed, 3 insertions(+), 2 deletions(-) > > diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c > index f06ee39..6be8d00 100644 > --- a/net/bridge/br_input.c > +++ b/net/bridge/br_input.c > @@ -93,10 +93,11 @@ int br_handle_frame_finish(struct sk_buff *skb) > skb2 = skb; > > br->dev->stats.multicast++; > - } else if ((dst = __br_fdb_get(br, dest)) && dst->is_local) { > + } else if ((dst = __br_fdb_get(br, dest)) != NULL) { > skb2 = skb; > /* Do not forward the packet since it's local. */ > - skb = NULL; > + if (dst->is_local) { > + skb = NULL; > } > > if (skb) { > -- 1.7.5.4 _______________________________________________ Devel mailing list Devel@openvz.org https://openvz.org/mailman/listinfo/devel
