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 95433EC873A for ; Thu, 7 Sep 2023 15:38:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237458AbjIGPiH (ORCPT ); Thu, 7 Sep 2023 11:38:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52250 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345018AbjIGPeU (ORCPT ); Thu, 7 Sep 2023 11:34:20 -0400 Received: from mail-qk1-x735.google.com (mail-qk1-x735.google.com [IPv6:2607:f8b0:4864:20::735]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 88FFF1BFA for ; Thu, 7 Sep 2023 08:34:01 -0700 (PDT) Received: by mail-qk1-x735.google.com with SMTP id af79cd13be357-76ef935abaeso62585185a.2 for ; Thu, 07 Sep 2023 08:34:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1694100813; x=1694705613; darn=vger.kernel.org; h=content-transfer-encoding:subject:from:cc:to:content-language :user-agent:mime-version:date:message-id:from:to:cc:subject:date :message-id:reply-to; bh=LlmQ0g0rcR8jIM0YGYnNYLZ2qWdNbYZUYP0dv1VJcEc=; b=aHCEjBJWJSQNChfwrTn4UWO8SdmfStA8/4kExuw2efaKTmYiVsg24/zEcVn4wz80x5 Bn6F7MmjuGjY04WMjruwDapZYaZyMmB1PCBBj/Gx+sLqYwNrZtAsaFMrcl4sjsn45ZEf ZMEI0JBT2XnJZFWnI/huypHGZG3yW28LzyIELwDB6Xp5ggfVRfipCeq8FTytzYhNprXr WoGlV/KEV43WPCBaJ6j996DNTp6Y1K9KbrVyDFxG2LYngTIjVskuuWIQMl6mnFcCLxTq Q/cQNPnE3E8JdujInYM9grIl0inY4Nhw2+P6VcElMaopJM9SrBxyfCekclRWVVIGgxJ0 Czzg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1694100813; x=1694705613; h=content-transfer-encoding:subject:from:cc:to:content-language :user-agent:mime-version:date:message-id:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=LlmQ0g0rcR8jIM0YGYnNYLZ2qWdNbYZUYP0dv1VJcEc=; b=JEZ+TSE8/SG0p3mux9H+etzE1+HK9R40N1gftUwjtyGgYcAYPiyBZ6dVsFCXGso3mE YzbAv0fvmgPStvGTH/9JRRTO44tALJ5Ln4R8vqBHdqhaPOylWPdmVdWORhkIxyHZui7l tkGgFvGt5QfwziaFnLA5oMEJi2F9PA9ls+mzfv4Krj35+k+7/DKqfxpF5sq04MduNyya Q+4XAyHd7de4YSZxDI/alCh9aUzCgG3EzyeaF02e21XxW3QytRDL7ltfrkO5g7jNPgVj 1ns8/a3UtM179M2asUdz0IO5TDh9GQRazfPP+rzCCoo+o/0VtIm98NK6NxjX3D2OEu42 kdog== X-Gm-Message-State: AOJu0Yx260iePead3/yvnsiMNvge7EqRUa3hC7JQFoGmI41alH5vRWBX iCiLK6o1SJMyZwK7f866deKMctxVImo= X-Google-Smtp-Source: AGHT+IErairZ9yBTSt2kN6hRRi4u5s+turR2d2XrvcJUpHHW7n53nfz3i2uJ5+X8D5O10AqLjMSI7Q== X-Received: by 2002:a17:902:bd45:b0:1c0:c0af:ba59 with SMTP id b5-20020a170902bd4500b001c0c0afba59mr16388444plx.34.1694086628392; Thu, 07 Sep 2023 04:37:08 -0700 (PDT) Received: from [192.168.0.106] ([103.124.138.83]) by smtp.gmail.com with ESMTPSA id t11-20020a170902bc4b00b0019ee045a2b3sm12601833plz.308.2023.09.07.04.37.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 07 Sep 2023 04:37:08 -0700 (PDT) Message-ID: <9a28c2fc-d769-4802-a1f2-77ba2cb34d25@gmail.com> Date: Thu, 7 Sep 2023 18:37:00 +0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.15.0 Content-Language: en-US To: Andres Salomon , "Timur I. Davletshin" Cc: Linux Kernel Mailing List , Linux Regressions , Linux AMD GEODE From: Bagas Sanjaya Subject: Fwd: AMD Geode LX hardware RNG driver produces regular patterns (geode-rng.c) Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, I notice a regression report on Bugzilla [1]. Quoting from it: > System: Alix board 2d13 (AMD Geode LX800) running OpenWrt 23.05.0-rc3 (kernel 5.15.127) > > Steps to reproduce: > > cat /dev/hwrng and see output. Output in console shows regular pattern, rngd daemon (from rng-tools) refuses to run because of low entropy from /dev/hwrng. Pattern doesn't change until I reboot system. > > Important notice: This problem started somewhere between 4.14.267 (kernel used in OpenWrt 19.07.9) and my current 5.15.127. > > OpenWrt developers recommended addressing this problem upstream since they did not alter this driver in any way. See Bugzilla for the full thread. Anyway, I'm adding it to regzbot: #regzbot ^introduced: v4.14.267..v5.15.127 #regzbot title: predictable urandom output on Alix 2d13 Thanks. [1]: https://bugzilla.kernel.org/show_bug.cgi?id=217882 -- An old man doll... just what I always wanted! - Clara