Re: [PATCH] netfilter: nf_tables: fix nft_counters_enabled underflow at nf_tables_addchain()

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Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx> wrote:
> syzbot is reporting underflow of nft_counters_enabled counter at
> nf_tables_addchain() [1], for commit 43eb8949cfdffa76 ("netfilter:
> nf_tables: do not leave chain stats enabled on error") missed that
> nf_tables_chain_destroy() after nft_basechain_init() in the error path of
> nf_tables_addchain() decrements the counter because nft_basechain_init()
> makes nft_is_base_chain() return true by setting NFT_CHAIN_BASE flag.
> 
> Increment the counter immediately after returning from
> nft_basechain_init().

Applied, thanks.



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