Re: [PATCH net] netlink: avoid a double skb free in genlmsg_mcast()

From: Nicolas Dichtel nicolas.dichtel@6wind.com Date: Wed, 14 Mar 2018 21:10:23 +0100

nlmsg_multicast() consumes always the skb, thus the original skb must be freed only when this function is called with a clone.

Fixes: cb9f7a9a5c96 ("netlink: ensure to loop over all netns in genlmsg_multicast_allns()") Reported-by: Ben Hutchings ben.hutchings@codethink.co.uk Signed-off-by: Nicolas Dichtel nicolas.dichtel@6wind.com

Yeah these "clone until final send" loops can be tricky to manage.

Good catch, applied and queued up for -stable, thanks.