linux-kernel - Re: [PATCH][next] netfilter: nftables: fix incorrect increment of loop counter

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Message-ID: <20201216100230.GA10280@salvia>
Date:   Wed, 16 Dec 2020 11:02:30 +0100
From:   Pablo Neira Ayuso <pablo@...filter.org>
To:     Colin King <colin.king@...onical.com>
Cc:     Jozsef Kadlecsik <kadlec@...filter.org>,
        Florian Westphal <fw@...len.de>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        netfilter-devel@...r.kernel.org, coreteam@...filter.org,
        netdev@...r.kernel.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH][next] netfilter: nftables: fix incorrect increment of
 loop counter

On Mon, Dec 14, 2020 at 11:40:15PM +0000, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> The intention of the err_expr cleanup path is to iterate over the
> allocated expr_array objects and free them, starting from i - 1 and
> working down to the start of the array. Currently the loop counter
> is being incremented instead of decremented and also the index i is
> being used instead of k, repeatedly destroying the same expr_array
> element.  Fix this by decrementing k and using k as the index into
> expr_array.

Applied to nf.git, thanks.