linux-kernel - Re: [PATCH] netfilter: nf_flow

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Message-ID: <Y3074rD5CXTyJg+z@salvia>
Date:   Tue, 22 Nov 2022 22:15:14 +0100
From:   Pablo Neira Ayuso <pablo@...filter.org>
To:     Felix Fietkau <nbd@....name>
Cc:     netfilter-devel@...r.kernel.org,
        Jozsef Kadlecsik <kadlec@...filter.org>,
        Florian Westphal <fw@...len.de>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, coreteam@...filter.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] netfilter: nf_flow_table: add missing locking

On Mon, Nov 21, 2022 at 07:26:15PM +0100, Felix Fietkau wrote:
> nf_flow_table_block_setup and the driver TC_SETUP_FT call can modify the flow
> block cb list while they are being traversed elsewhere, causing a crash.
> Add a write lock around the calls to protect readers

Applied, thanks