David Ahern
2021-Mar-09 15:55 UTC
[PATCH net v3 2/2] net: avoid infinite loop in mpls_gso_segment when mpls_hlen == 0
On 3/9/21 4:31 AM, Balazs Nemeth wrote:> A packet with skb_inner_network_header(skb) == skb_network_header(skb) > and ETH_P_MPLS_UC will prevent mpls_gso_segment from pulling any headers > from the packet. Subsequently, the call to skb_mac_gso_segment will > again call mpls_gso_segment with the same packet leading to an infinite > loop. In addition, ensure that the header length is a multiple of four, > which should hold irrespective of the number of stacked labels. > > Signed-off-by: Balazs Nemeth <bnemeth at redhat.com> > --- > net/mpls/mpls_gso.c | 3 +++ > 1 file changed, 3 insertions(+) >Reviewed-by: David Ahern <dsahern at kernel.org>