Re: arm64: pointer_auth.h:40:3: error: implicit declaration of function ‘get_random_bytes’; did you mean ‘get_random_once’?

From: Grygorii Strashko <grygorii.strashko@ti.com>
To: Stephen Rothwell <sfr@canb.auug.org.au>,
	Naresh Kamboju <naresh.kamboju@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
	"Theodore Ts'o" <tytso@mit.edu>,
	Kees Cook <keescook@chromium.org>, Arnd Bergmann <arnd@arndb.de>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Mark Brown <broonie@kernel.org>, <richard.henderson@linaro.org>,
	open list <linux-kernel@vger.kernel.org>,
	<lkft-triage@lists.linaro.org>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	<re.emese@gmail.com>, <hsinyi@chromium.org>,
	Will Deacon <will@kernel.org>, <w@1wt.eu>,
	<linux-arm-kernel@lists.infradead.org>
Subject: Re: arm64: pointer_auth.h:40:3: error: implicit declaration of function ‘get_random_bytes’; did you mean ‘get_random_once’?
Date: Thu, 30 Jul 2020 21:46:44 +0300	[thread overview]
Message-ID: <d23eba90-ee2c-efe0-0cb6-88e99fb22e54@ti.com> (raw)
In-Reply-To: <20200730211522.1ea3561f@canb.auug.org.au>


On 30/07/2020 14:15, Stephen Rothwell wrote:
> Hi Naresh,
> 
> On Thu, 30 Jul 2020 16:25:49 +0530 Naresh Kamboju <naresh.kamboju@linaro.org> wrote:
>>
>> Linus master branch failed to build the arm64 architecture due to
>> below error and warnings.
> 
> Thanks for the report.
> 
> Please see https://lore.kernel.org/lkml/202007292007.D87DBD34B@keescook/

I'd like to note that below set of patches:
1c9df907da83 random: fix circular include dependency on arm64 after addition of percpu.h
83bdc7275e62 random32: remove net_rand_state from the latent entropy gcc plugin
f227e3ec3b5c random32: update the net random state on interrupt and activity

also break ARM build for the case:
#if defined(CONFIG_SMP) && !defined(CONFIG_CPU_V6)

config: keystone_defconfig

   CC      arch/arm/kernel/signal.o
In file included from ../include/linux/random.h:14,
                  from ../arch/arm/kernel/signal.c:8:
../arch/arm/include/asm/percpu.h: In function ‘__my_cpu_offset’:
../arch/arm/include/asm/percpu.h:29:34: error: ‘current_stack_pointer’ undeclared (first use in this function); did you mean ‘user_stack_pointer’?
    : "Q" (*(const unsigned long *)current_stack_pointer));
                                   ^~~~~~~~~~~~~~~~~~~~~
                                   user_stack_pointer
../arch/arm/include/asm/percpu.h:29:34: note: each undeclared identifier is reported only once for each function it appears in
../scripts/Makefile.build:280: recipe for target 'arch/arm/kernel/signal.o' failed
make[2]: *** [arch/arm/kernel/signal.o] Error 1
/home/grygorii/kernel.org/linux-master/linux/Makefile:1756: recipe for target 'arch/arm/kernel' failed
make[1]: *** [arch/arm/kernel] Error 2


-- 
Best regards,
grygorii