From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from foss.arm.com ([217.140.110.172]:45888 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728358AbgAJOyl (ORCPT ); Fri, 10 Jan 2020 09:54:41 -0500 From: Mark Brown Subject: [PATCH v2 06/10] linux/random.h: Mark CONFIG_ARCH_RANDOM functions __must_check Date: Fri, 10 Jan 2020 14:54:18 +0000 Message-Id: <20200110145422.49141-7-broonie@kernel.org> In-Reply-To: <20200110145422.49141-1-broonie@kernel.org> References: <20200110145422.49141-1-broonie@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-s390-owner@vger.kernel.org List-ID: To: linux-arch@vger.kernel.org Cc: Richard Henderson , Borislav Petkov , linux-s390@vger.kernel.org, herbert@gondor.apana.org.au, x86@kernel.org, linux-crypto@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org, Ard Biesheuvel , Richard Henderson , Mark Brown From: Richard Henderson We must not use the pointer output without validating the success of the random read. Reviewed-by: Ard Biesheuvel Signed-off-by: Richard Henderson Signed-off-by: Mark Brown --- include/linux/random.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/include/linux/random.h b/include/linux/random.h index ea0e2f5f1ec5..d319f9a1e429 100644 --- a/include/linux/random.h +++ b/include/linux/random.h @@ -167,19 +167,19 @@ static inline void prandom_seed_state(struct rnd_state *state, u64 seed) #ifdef CONFIG_ARCH_RANDOM # include #else -static inline bool arch_get_random_long(unsigned long *v) +static inline bool __must_check arch_get_random_long(unsigned long *v) { return false; } -static inline bool arch_get_random_int(unsigned int *v) +static inline bool __must_check arch_get_random_int(unsigned int *v) { return false; } -static inline bool arch_get_random_seed_long(unsigned long *v) +static inline bool __must_check arch_get_random_seed_long(unsigned long *v) { return false; } -static inline bool arch_get_random_seed_int(unsigned int *v) +static inline bool __must_check arch_get_random_seed_int(unsigned int *v) { return false; } -- 2.20.1