Re: [PATCH v3 bpf-next 09/18] libbpf: extend sanity checking ELF symbols with externs validation

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Subject: Re: [PATCH v3 bpf-next 09/18] libbpf: extend sanity checking ELF symbols with externs validation
From: Yonghong Song <yhs@xxxxxx>
Date: Fri, 23 Apr 2021 11:39:26 -0700
Cc: <kernel-team@xxxxxx>
In-reply-to: <20210423181348.1801389-10-andrii@kernel.org>
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.9.1



On 4/23/21 11:13 AM, Andrii Nakryiko wrote:

Add logic to validate extern symbols, plus some other minor extra checks, like
ELF symbol #0 validation, general symbol visibility and binding validations.

Signed-off-by: Andrii Nakryiko <andrii@xxxxxxxxxx>


Acked-by: Yonghong Song <yhs@xxxxxx>

References:
- [PATCH v3 bpf-next 00/18] BPF static linker: support externs
  - From: Andrii Nakryiko
- [PATCH v3 bpf-next 09/18] libbpf: extend sanity checking ELF symbols with externs validation
  - From: Andrii Nakryiko

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