timothee.cocault@xxxxxxxxxx <timothee.cocault@xxxxxxxxxx> wrote: > Hi ! > > I noticed a bug when using the snat module of ebtables. > If the ethernet payload of a packet is less than 12 bytes, the packet gets dropped. > > I traced it down to this commit which changes calls to `skb_make_writable` to `skb_ensure_writable` : > https://github.com/torvalds/linux/commit/c1a8311679014a79b04c039e32bde34fb68952fd > > The diff gives a clear hint of the bug. For example, in `net/bridge/netfilter/ebt_snat.c` : > > - if (!skb_make_writable(skb, 0)) > + if (skb_ensure_writable(skb, ETH_ALEN * 2)) > return EBT_DROP; Can you send a formal patch that fixes this up for all callers? Thanks.
