netdev - Re: [PATCH bpf v2] bpf: don't leak memory in bpf getsockopt when optlen == 0

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Date:   Tue, 12 Jan 2021 10:04:04 -0800
From:   Martin KaFai Lau <kafai@...com>
To:     Stanislav Fomichev <sdf@...gle.com>
CC:     <netdev@...r.kernel.org>, <bpf@...r.kernel.org>, <ast@...nel.org>,
        <daniel@...earbox.net>
Subject: Re: [PATCH bpf v2] bpf: don't leak memory in bpf getsockopt when
 optlen == 0

On Tue, Jan 12, 2021 at 08:28:29AM -0800, Stanislav Fomichev wrote:
> optlen == 0 indicates that the kernel should ignore BPF buffer
> and use the original one from the user. We, however, forget
> to free the temporary buffer that we've allocated for BPF.
Acked-by: Martin KaFai Lau <kafai@...com>