linux-hardening - Re: [PATCH v4 02/21] kallsyms: Export kallsyms_lookup

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Date:   Wed, 28 Jun 2023 16:24:48 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Mukesh Ojha <quic_mojha@...cinc.com>
Cc:     corbet@....net, agross@...nel.org, andersson@...nel.org,
        konrad.dybcio@...aro.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        keescook@...omium.org, tony.luck@...el.com, gpiccoli@...lia.com,
        mathieu.poirier@...aro.org, catalin.marinas@....com,
        will@...nel.org, linus.walleij@...aro.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-hardening@...r.kernel.org, linux-remoteproc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-gpio@...r.kernel.org
Subject: Re: [PATCH v4 02/21] kallsyms: Export kallsyms_lookup_name

On Wed, Jun 28, 2023 at 3:35 PM Mukesh Ojha <quic_mojha@...cinc.com> wrote:
>
> Module like minidump providing debugging support will need to
> get the symbol information from the core kernel e.g to get
> the linux_banner, kernel section addresses bss, data, ro etc.
>
> commit 0bd476e6c671 ("kallsyms: unexport kallsyms_lookup_name()

Commit

>  and kallsyms_on_each_symbol()") unexports kallsyms_lookup_name
> due to lack of in-tree user of the symbol. Now, that minidump
> will one of its user, export it.

users

...

Is it a direct revert? Then make it visible by leaving pieces from `git revert`.

...

> -

If not, drop this stray change.

> +EXPORT_SYMBOL_GPL(kallsyms_lookup_name);


-- 
With Best Regards,
Andy Shevchenko