linux-kernel - RE: [PATCH v6 3/7] treewide: use get_random

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <MW5PR84MB18421AC962BE140DDEB58A8BAB239@MW5PR84MB1842.NAMPRD84.PROD.OUTLOOK.COM>
Date:   Tue, 11 Oct 2022 01:18:40 +0000
From:   "Elliott, Robert (Servers)" <elliott@....com>
To:     "Jason A. Donenfeld" <Jason@...c4.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "patches@...ts.linux.dev" <patches@...ts.linux.dev>
CC:     Andreas Noever <andreas.noever@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Borislav Petkov <bp@...en8.de>,
        "Catalin Marinas" <catalin.marinas@....com>,
        Christoph Böhmwalder 
        <christoph.boehmwalder@...bit.com>, Christoph Hellwig <hch@....de>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Daniel Borkmann <daniel@...earbox.net>,
        Dave Airlie <airlied@...hat.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "David S . Miller" <davem@...emloft.net>,
        "Eric Dumazet" <edumazet@...gle.com>,
        Florian Westphal <fw@...len.de>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        "H . Peter Anvin" <hpa@...or.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Helge Deller <deller@....de>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Huacai Chen <chenhuacai@...nel.org>,
        Hugh Dickins <hughd@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        "James E . J . Bottomley" <jejb@...ux.ibm.com>,
        Jan Kara <jack@...e.com>, Jason Gunthorpe <jgg@...pe.ca>,
        Jens Axboe <axboe@...nel.dk>,
        Johannes Berg <johannes@...solutions.net>,
        Jonathan Corbet <corbet@....net>,
        Jozsef Kadlecsik <kadlec@...filter.org>,
        KP Singh <kpsingh@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Marco Elver <elver@...gle.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        "Michael Ellerman" <mpe@...erman.id.au>,
        Pablo Neira Ayuso <pablo@...filter.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Richard Weinberger <richard@....at>,
        Russell King <linux@...linux.org.uk>,
        Theodore Ts'o <tytso@....edu>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        "Thomas Graf" <tgraf@...g.ch>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        "Vignesh Raghavendra" <vigneshr@...com>,
        WANG Xuerui <kernel@...0n.name>, Will Deacon <will@...nel.org>,
        Yury Norov <yury.norov@...il.com>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "kasan-dev@...glegroups.com" <kasan-dev@...glegroups.com>,
        "kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        "linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
        "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
        "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
        "linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
        "linux-mips@...r.kernel.org" <linux-mips@...r.kernel.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        "linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
        "linux-nvme@...ts.infradead.org" <linux-nvme@...ts.infradead.org>,
        "linux-parisc@...r.kernel.org" <linux-parisc@...r.kernel.org>,
        "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
        "linux-s390@...r.kernel.org" <linux-s390@...r.kernel.org>,
        "linux-um@...ts.infradead.org" <linux-um@...ts.infradead.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        "loongarch@...ts.linux.dev" <loongarch@...ts.linux.dev>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "sparclinux@...r.kernel.org" <sparclinux@...r.kernel.org>,
        "x86@...nel.org" <x86@...nel.org>,
        Toke Høiland-Jørgensen <toke@...e.dk>
Subject: RE: [PATCH v6 3/7] treewide: use get_random_{u8,u16}() when possible,
 part 1


> diff --git a/crypto/testmgr.c b/crypto/testmgr.c
...
> @@ -944,7 +944,7 @@ static void generate_random_bytes(u8 *buf, size_t count)
>  	default:
>  		/* Fully random bytes */
>  		for (i = 0; i < count; i++)
> -			buf[i] = (u8)prandom_u32();
> +			buf[i] = get_random_u8();

Should that whole for loop be replaced with this?
    get_random_bytes(buf, count);