linux-kernel - Re: [PATCH] nfp: bpf: offload: Check prog before dereference

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Message-ID: <20231018081702.2e24ce32@kernel.org>
Date:   Wed, 18 Oct 2023 08:17:02 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Artem Chernyshev <artem.chernyshev@...-soft.ru>
Cc:     Louis Peens <louis.peens@...igine.com>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>, bpf@...r.kernel.org,
        oss-drivers@...igine.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, lvc-project@...uxtesting.org
Subject: Re: [PATCH] nfp: bpf: offload: Check prog before dereference

On Wed, 18 Oct 2023 17:52:44 +0300 Artem Chernyshev wrote:
> In nfp_net_bpf_offload() it is possible to dereference a
> NULL pointer.

And who would call this function with prog = NULL if old_prog
is also NULL, exactly?
-- 
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