linux-kernel - Re: [PATCH] x86/boot: add prototype for __fortify

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Date: Thu, 30 May 2024 09:23:36 -0700
From: Jeff Johnson <quic_jjohnson@...cinc.com>
To: Nikolay Borisov <nik.borisov@...e.com>,
        Thomas Gleixner
	<tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
        Borislav Petkov
	<bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>, <x86@...nel.org>,
        Kees Cook <keescook@...omium.org>, "H. Peter Anvin" <hpa@...or.com>
CC: <linux-kernel@...r.kernel.org>, <linux-hardening@...r.kernel.org>,
        <kernel-janitors@...r.kernel.org>
Subject: Re: [PATCH] x86/boot: add prototype for __fortify_panic()

On 5/30/2024 8:42 AM, Nikolay Borisov wrote:
> 
> 
> On 29.05.24 г. 21:09 ч., Jeff Johnson wrote:
>> As discussed in [1] add a prototype for __fortify_panic() to fix the
>> 'make W=1 C=1' warning:
>>
>> arch/x86/boot/compressed/misc.c:535:6: warning: symbol '__fortify_panic' was not declared. Should it be static?
> 
> Actually doesn't it make sense to have this defined under ../string.h ? 
> Actually given that we don't have any string fortification under the 
> boot/  why have the fortify _* functions at all ?

I'll let Kees answer these questions since I just took guidance from him :)

/jeff