netfilter: nf_tables: free flowtable hooks on hook register error

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If hook registration fails, the hooks allocated via nft_netdev_hook_alloc
need to be freed.

We can't change the goto label to 'goto 5' -- while it does fix the memleak
it does cause a warning splat from the netfilter core (the hooks were not
registered).

Fixes: 3f0465a9ef ("netfilter: nf_tables: dynamically allocate hooks per net_device in flowtables")
Reported-by: syzbot+a2ff6fa45162a5ed4dd3@syzkaller.appspotmail.com
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

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Florian Westphal 2020-03-02 21:58:50 +01:00 • committed by Pablo Neira Ayuso

parent ee84f19cbb

commit 2d285f26ec

1 changed files with 6 additions and 1 deletions

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net/netfilter/nf_tables_api.c

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