From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751399AbeDXPtI (ORCPT ); Tue, 24 Apr 2018 11:49:08 -0400 Received: from imap.thunk.org ([74.207.234.97]:51780 "EHLO imap.thunk.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750779AbeDXPtH (ORCPT ); Tue, 24 Apr 2018 11:49:07 -0400 Date: Tue, 24 Apr 2018 11:49:04 -0400 From: "Theodore Y. Ts'o" To: Paul Menzel , linux-kernel@vger.kernel.org Subject: Re: Linux messages full of `random: get_random_u32 called from` Message-ID: <20180424154904.GC30619@thunk.org> Mail-Followup-To: "Theodore Y. Ts'o" , Paul Menzel , linux-kernel@vger.kernel.org References: <42c1b84b-ab1f-5577-6304-e0985a637cf9@molgen.mpg.de> <20180424135621.GD4189@thunk.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180424135621.GD4189@thunk.org> User-Agent: Mutt/1.9.5 (2018-04-13) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: tytso@thunk.org X-SA-Exim-Scanned: No (on imap.thunk.org); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Apr 24, 2018 at 09:56:21AM -0400, Theodore Y. Ts'o wrote: > On Tue, Apr 24, 2018 at 01:48:16PM +0200, Paul Menzel wrote: > > Dear Linux folks, > > > > > > Since Linux 4.17-rcX, Linux spams a lot of `random: get_random_u32 called > > from` messages. I believe, this setting should be reverted by default as > > otherwise a lot of other messages are not seen. > > Can you tell me a bit about your system? What distribution, what > hardware is present in your sytsem (what architecture, what > peripherals are attached, etc.)? Can you also send me your dmesg or kern.log so I can see where get_random_u32 is getting called from during your system startup? Thanks! - Ted