netdev - Re: [PATCH 12/23] bpf: handle the compat string in bpf_trace_copy

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Message-ID: <CAEf4BzbDvJzbygB9T2_4YtCx8J+ESp9rhpB=BCQVDa0QBHrV0A@mail.gmail.com>
Date:   Thu, 21 May 2020 15:10:38 -0700
From:   Andrii Nakryiko <andrii.nakryiko@...il.com>
To:     Christoph Hellwig <hch@....de>
Cc:     x86@...nel.org, Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-parisc@...r.kernel.org, linux-um@...ts.infradead.org,
        Networking <netdev@...r.kernel.org>, bpf <bpf@...r.kernel.org>,
        linux-mm@...ck.org, open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 12/23] bpf: handle the compat string in
 bpf_trace_copy_string better

On Thu, May 21, 2020 at 8:24 AM Christoph Hellwig <hch@....de> wrote:
>
> User the proper helper for kernel or userspace addresses based on
> TASK_SIZE instead of the dangerous strncpy_from_unsafe function.
>
> Signed-off-by: Christoph Hellwig <hch@....de>
> ---

Acked-by: Andrii Nakryiko <andriin@...com>

>  kernel/trace/bpf_trace.c | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
>

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