From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752768AbdFRIFQ (ORCPT ); Sun, 18 Jun 2017 04:05:16 -0400 Received: from mail.eperm.de ([89.247.134.16]:60284 "EHLO mail.eperm.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750998AbdFRIFH (ORCPT ); Sun, 18 Jun 2017 04:05:07 -0400 From: Stephan =?ISO-8859-1?Q?M=FCller?= To: Lee Duncan Cc: "Jason A. Donenfeld" , "Theodore Ts'o" , Linux Crypto Mailing List , LKML , kernel-hardening@lists.openwall.com, Greg Kroah-Hartman , David Miller , Eric Biggers , "Nicholas A. Bellinger" , Chris Leech , open-iscsi@googlegroups.com Subject: Re: [kernel-hardening] Re: [PATCH v4 06/13] iscsi: ensure RNG is seeded before use Date: Sun, 18 Jun 2017 10:04:58 +0200 Message-ID: <2639082.PtrrGWOPPL@positron.chronox.de> In-Reply-To: <02d60ed4-4207-dd7d-8826-0f9f7f4e966d@suse.com> References: <20170606174804.31124-1-Jason@zx2c4.com> <02d60ed4-4207-dd7d-8826-0f9f7f4e966d@suse.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am Samstag, 17. Juni 2017, 05:45:57 CEST schrieb Lee Duncan: Hi Lee, > In your testing, how long might a process have to wait? Are we talking > seconds? Longer? What about timeouts? > In current kernels (starting with 4.8) this timeout should clear within a few seconds after boot. In older kernels (pre 4.8), my KVM takes up to 90 seconds to reach that seeding point. I have heard that on IBM System Z this trigger point requires minutes to be reached. Ciao Stephan