Re: [RFC bpf-next v2 2/6] bpf: Prevent BPF programs from access the buffer pointed by user_optval.

[Yonghong Song <yonghong.song@xxxxxxxxx>]

On 8/10/23 9:31 PM, thinker.li@xxxxxxxxx wrote:
> From: Kui-Feng Lee <kuifeng@xxxxxxxx>
>
> Since the buffer pointed by ctx->user_optval is in user space, BPF programs
> in kernel space should not access it directly.  They should use
> bpf_copy_from_user() and bpf_copy_to_user() to move data between user and
> kernel space.
>
> Signed-off-by: Kui-Feng Lee <kuifeng@xxxxxxxx>
> Signed-off-by: Kui-Feng Lee <thinker.li@xxxxxxxxx>

You probably only want
   Signed-off-by: Kui-Feng Lee <thinker.li@xxxxxxxxx>
since it matches email 'From'. Also,
   From: Kui-Feng Lee <kuifeng@xxxxxxxx>
is different from email 'From'. Strange.

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