Re: [PATCH] netlink: fix memory leak of dump

[Pablo Neira Ayuso]

On Mon, Jul 23, 2018 at 06:34:36PM +0800, shaochun chen wrote:
> I have a question: we will try_module_get in __netlink_dump_start(),
> but why we need to call try_module_get again in  nft_netlink_dump_start ??

Because they refer to two different modules. nfnetlink is multiplexing
all netfilter subsystem through one single netlink bus.

At the time that decision was made, there were concerns about netlink
running out of busses.