Re: [PATCH net v3 2/2] net: avoid infinite loop in mpls_gso_segment when mpls_hlen == 0
From: David Ahern <hidden>
Date: 2021-03-09 15:56:53
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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 <redacted> --- net/mpls/mpls_gso.c | 3 +++ 1 file changed, 3 insertions(+)
Reviewed-by: David Ahern <dsahern@kernel.org> _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization