netdev - Re: [PATCH net] bpf: prevent leaking pointer via xadd on unpriviledged

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Message-ID: <79a17a55-66d6-3a2f-18da-bbd1b3489a66@fb.com>
Date:   Wed, 28 Jun 2017 20:41:04 -0700
From:   Alexei Starovoitov <ast@...com>
To:     Daniel Borkmann <daniel@...earbox.net>, <davem@...emloft.net>
CC:     <kafai@...com>, <john.fastabend@...il.com>,
        <netdev@...r.kernel.org>
Subject: Re: [PATCH net] bpf: prevent leaking pointer via xadd on
 unpriviledged

On 6/28/17 6:04 PM, Daniel Borkmann wrote:
> Prevent this by checking xadd src reg for pointer types. Also
> add a couple of test cases related to this.
>
> Fixes: 1be7f75d1668 ("bpf: enable non-root eBPF programs")
> Fixes: 17a5267067f3 ("bpf: verifier (add verifier core)")
> Signed-off-by: Daniel Borkmann <daniel@...earbox.net>

Acked-by: Alexei Starovoitov <ast@...nel.org>