From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754143AbeD2SbD (ORCPT ); Sun, 29 Apr 2018 14:31:03 -0400 Received: from mail-ot0-f176.google.com ([74.125.82.176]:38333 "EHLO mail-ot0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753584AbeD2SbC (ORCPT ); Sun, 29 Apr 2018 14:31:02 -0400 X-Google-Smtp-Source: AB8JxZrfT3wVSq2ojQoZPvNKiEN3MVf2qtyq7MsgP1RCku04i8gv1arFk5B8EvvSqcP5Esde0cWdGg== Date: Sun, 29 Apr 2018 11:30:57 -0700 From: Sultan Alsawaf To: "Theodore Y. Ts'o" , linux-kernel@vger.kernel.org, Jann Horn Subject: Re: Linux messages full of `random: get_random_u32 called from` Message-ID: <20180429183057.kk666r4z5biamzvs@sultan-box> References: <20180426050056.GF18803@thunk.org> <20180426073255.GH18803@thunk.org> <20180426192524.GD5965@thunk.org> <2add15cb-2113-0504-a732-81255ea61bf5@gmail.com> <20180426235630.GG5965@thunk.org> <3eb5761e-7b25-4178-0560-fba5eb43ce6a@gmail.com> <20180427201036.GL5965@thunk.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180427201036.GL5965@thunk.org> User-Agent: NeoMutt/20170609 (1.8.3) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org I'd also like to add that my high-spec x86 laptop exhibits the same issue as my Edgar Chromebook. Here's my dmesg: https://hastebin.com/dofejolobi.go The most interesting line: [ 90.811633] random: crng init done I waited 90 seconds after boot to provide entropy myself, at which point crng init completed. In other words, crng init only completed because I provided the entropy by smashing the keyboard. I could've waited longer and crng init wouldn't have completed without my input. Mind you, this laptop has a 45W CPU, so power savings were definitely not considered in its design. Do you have any machines that can provide enough boot entropy to satisfy crng init without requiring user-provided entropy? Sultan