linux-kernel - Re: [PATCH] apparmor: fix SECURITY_APPARMOR_HASH

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Date:	Tue, 26 Jul 2016 21:38:38 +1000 (AEST)
From:	James Morris <jmorris@...ei.org>
To:	John Johansen <john.johansen@...onical.com>
cc:	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org,
	Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH] apparmor: fix SECURITY_APPARMOR_HASH_DEFAULT parameter
 handling

On Mon, 25 Jul 2016, John Johansen wrote:

> From: Arnd Bergmann <arnd@...db.de>
> 
> The newly added Kconfig option could never work and just causes a build error
> when disabled:
> 
> security/apparmor/lsm.c:675:25: error: 'CONFIG_SECURITY_APPARMOR_HASH_DEFAULT' undeclared here (not in a function)
>  bool aa_g_hash_policy = CONFIG_SECURITY_APPARMOR_HASH_DEFAULT;
> 
> The problem is that the macro undefined in this case, and we need to use the IS_ENABLED()
> helper to turn it into a boolean constant.
> 
> Another minor problem with the original patch is that the option is even offered
> in sysfs when SECURITY_APPARMOR_HASH is not enabled, so this also hides the option
> in that case.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> Fixes: 6059f71f1e94 ("apparmor: add parameter to control whether policy hashing is used")
> Signed-off-by: John Johansen <john.johansen@...onical.com>

Please rebase this against current Linus.

-- 
James Morris
<jmorris@...ei.org>