linux-kernel - Re: [PATCH v9 07/14] module: Move extra signature support out of core code

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Message-ID: <20220302133324.dbf5vx45foxa32bu@ava.usersys.com>
Date:   Wed, 2 Mar 2022 13:33:24 +0000
From:   Aaron Tomlin <atomlin@...hat.com>
To:     Christophe Leroy <christophe.leroy@...roup.eu>
Cc:     "mcgrof@...nel.org" <mcgrof@...nel.org>,
        "cl@...ux.com" <cl@...ux.com>, "mbenes@...e.cz" <mbenes@...e.cz>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "jeyu@...nel.org" <jeyu@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-modules@...r.kernel.org" <linux-modules@...r.kernel.org>,
        "void@...ifault.com" <void@...ifault.com>,
        "atomlin@...mlin.com" <atomlin@...mlin.com>,
        "allen.lkml@...il.com" <allen.lkml@...il.com>,
        "joe@...ches.com" <joe@...ches.com>,
        "msuchanek@...e.de" <msuchanek@...e.de>,
        "oleksandr@...alenko.name" <oleksandr@...alenko.name>,
        "jason.wessel@...driver.com" <jason.wessel@...driver.com>,
        "daniel.thompson@...aro.org" <daniel.thompson@...aro.org>,
        "pmladek@...e.com" <pmladek@...e.com>
Subject: Re: [PATCH v9 07/14] module: Move extra signature support out of
 core code

On Wed 2022-03-02 08:08 +0000, Christophe Leroy wrote:
> > +bool is_module_sig_enforced(void)
> > +{
> > +	return sig_enforce;
> > +}
> > +EXPORT_SYMBOL(is_module_sig_enforced);
> 
> As reported by the test robot, that's not enough.

Hi Christophe,

Thanks for testing this.

> When it was in main.c, is_module_sig_enforced() was build as soon as 
> CONFIG_MODULES was set.
> Now it is only built when CONFIG_MODULE_SIG is selected,

Agreed.

> so you have to modify include/linux/modules.h and have the stub
> is_module_sig_enforced() when CONFIG_MODULE_SIG is not selected and not
> only when CONFIG_MODULES is not selected.

Sure: when Kconfig CONFIG_MODULE_SIG is not selected.

Luis,

I can see that the latest series is in mcgrof/modules-testing.
Should I address the above as a separate patch with "Fixes:" or
provide a whole new series, with the fix within the same patch?
In my opinion, another iteration would be cleaner.


Kind regards,

-- 
Aaron Tomlin