From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DA125C433F5 for ; Wed, 23 Mar 2022 12:10:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230134AbiCWMLr (ORCPT ); Wed, 23 Mar 2022 08:11:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41836 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234249AbiCWMLr (ORCPT ); Wed, 23 Mar 2022 08:11:47 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AE74739162; Wed, 23 Mar 2022 05:10:17 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 1FFC7614DD; Wed, 23 Mar 2022 12:10:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 338B1C340E8; Wed, 23 Mar 2022 12:10:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1648037416; bh=vbcI4mero0N/bJWLX90aYg9H0pV4+j0AozrkgOJahHY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=JEITn10iUJpImQkt/uXRjniHYZUsd6BAzcy643WWTVYjsTo6LxFwUOnlQRwy8OBWs w+4D6eknX4FOtFXmSAea1GdGlwv0HFpq0K1HD3cALlwlnsouh+AQX8r/I0wsJUGDxp 8BIw8b8ZDdFDNkobUgmmMF3gItUrnC9A2s0QrNjQKU2xQ8hD+mT9YeZ/822MKbVIln cCPNK2h+QBEWIOYkWi/kUDqmg9dWlU6ayXMjSlhvOuiqzrp6L1J0sK1ZBwiBEV5Emi f97DvFO2X4mz0npZGdc9uAPrqNl/o/+geIXj5acz32k1eHUYV1tvby8dwPUkZicHfI XSuP6rifB8qRg== Date: Wed, 23 Mar 2022 12:10:06 +0000 From: Mark Brown To: Guenter Roeck Cc: "Jason A. Donenfeld" , linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, linux-arch@vger.kernel.org, Dinh Nguyen , Nick Hu , Max Filippov , Palmer Dabbelt , "David S . Miller" , Yoshinori Sato , Michal Simek , Borislav Petkov , Guo Ren , Geert Uytterhoeven , Joshua Kinard , David Laight , Dominik Brodowski , Eric Biggers , Ard Biesheuvel , Arnd Bergmann , Thomas Gleixner , Andy Lutomirski , Kees Cook , Lennart Poettering , Konstantin Ryabitsev , Linus Torvalds , Greg Kroah-Hartman , Theodore Ts'o Subject: Re: [PATCH v1] random: block in /dev/urandom Message-ID: References: <20220217162848.303601-1-Jason@zx2c4.com> <20220322155820.GA1745955@roeck-us.net> <0d20fb04-81b8-eeee-49ab-5b0a9e78c9f8@roeck-us.net> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="tJxr+BfuLW0D7ewQ" Content-Disposition: inline In-Reply-To: <0d20fb04-81b8-eeee-49ab-5b0a9e78c9f8@roeck-us.net> X-Cookie: Nice guys get sick. Precedence: bulk List-ID: X-Mailing-List: linux-arch@vger.kernel.org --tJxr+BfuLW0D7ewQ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, Mar 22, 2022 at 02:54:20PM -0700, Guenter Roeck wrote: > On 3/22/22 11:24, Mark Brown wrote: > > Just as a datapoint for debugging at least qemu/arm is getting coverage > > in CI systems (KernelCI is covering a bunch of different emulated > > machines and LKFT has at least one configuration as well, clang's tests > > have some wider architecture coverage as well I think) and they don't > > seem to be seeing any problems - there's some other variable in there. > I use buildroot 2021.02.3. I have not changed the buildroot code, and it > still seems to be the same in 2022.02. I don't see the problem with all > boot tests, only with the architectures mentioned above, and not with all > qemu machines on the affected platforms. For arm, mostly older machines > are affected (versatile, realview, pxa configurations, collie, integratorcp, > sx1, mps2-an385, vexpress-a9, cubieboard). I didn't check, but maybe > kernelci doesn't test those machines ? Kind of academic given that Jason seems to have a handle on what the issues are but for KernelCI it's variations on mach-virt, plus versatile-pb. There's a physical cubietruck as well, and BeagleBone Blacks among others. My best guess would be systems with low RAM are somehow more prone to issues. --tJxr+BfuLW0D7ewQ Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmI7Dh0ACgkQJNaLcl1U h9BcKgf9GIwAeN+f0WgtlSoiS81pYIPqyjQ+X1zRuvJIR7xCVZq+sYQ27js719v2 oES8pLcPkyjZHNziBmIDbpiNeKJWWbYlxxXdyyW5sTe+GzEUzh/+MVxLeGUDF1Qx rpZYsiZ/NybofrWfkOwDmm/R5tTn2JgJFZaRHtMeUn67ElJPNu107LsgeDVujePG Pywun/VDDjcC5scInU3cbhzRoo2ipY8/nwAxPcM6fddMqgaymdFrC5wU8+ihxGsc 55rSw4QnKKPRpX8CGjc4wSmYXax1OsLc5Lsh9FQHf9EqVs46ZsJHwd6FntTpIht2 fiOwR2pk7XiyL1tJEsCZyQfE4vAmBw== =b+8U -----END PGP SIGNATURE----- --tJxr+BfuLW0D7ewQ--