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Date:   Wed, 13 Jan 2021 23:29:16 +0100
From:   KP Singh <>
To:     Gilad Reti <>
Cc:     bpf <>, Yonghong Song <>,
        Alexei Starovoitov <>,
        Daniel Borkmann <>,
        Andrii Nakryiko <>,
        Martin KaFai Lau <>,
        Song Liu <>,
        John Fastabend <>,
        Shuah Khan <>,
        Networking <>,
        open list <>,
Subject: Re: [PATCH bpf v2 1/2] bpf: support PTR_TO_MEM{,_OR_NULL} register spilling

On Wed, Jan 13, 2021 at 6:38 AM Gilad Reti <> wrote:
> Add support for pointer to mem register spilling, to allow the verifier
> to track pointers to valid memory addresses. Such pointers are returned
> for example by a successful call of the bpf_ringbuf_reserve helper.
> The patch was partially contributed by CyberArk Software, Inc.
> Fixes: 457f44363a88 ("bpf: Implement BPF ring buffer and verifier support for it")
> Suggested-by: Yonghong Song <>
> Signed-off-by: Gilad Reti <>

Acked-by: KP Singh <>

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