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 X-Spam-Level: X-Spam-Status: No, score=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B0C9CC4CEC9 for ; Fri, 20 Sep 2019 14:46:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7C7EC20B7C for ; Fri, 20 Sep 2019 14:46:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1568990794; bh=9KvqGZWZHqe7utK0/zKU+G9jJ5bZWTajC16scgEKdXY=; h=References:In-Reply-To:From:Date:Subject:To:Cc:List-ID:From; b=XBn9kl8LH0xmM2ZXaeqX+eP8w2NouZqrJe8u860C6uGE0tdhW0ImLy9QsZ1/+8VV1 cH1AgV00C+2naLMzg2qxLv1sNwWP/AHM/XoUnXUysamW5Lo0Kku5dseJxV940HkVDu vGMNUXZ7jXEDB/mk2tNwkKk4/8VYNoxbu1zrFRjU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2393091AbfITOqe (ORCPT ); Fri, 20 Sep 2019 10:46:34 -0400 Received: from mail.kernel.org ([198.145.29.99]:53380 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388765AbfITOqd (ORCPT ); Fri, 20 Sep 2019 10:46:33 -0400 Received: from mail-wm1-f43.google.com (mail-wm1-f43.google.com [209.85.128.43]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id BE845207FC for ; Fri, 20 Sep 2019 14:46:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1568990793; bh=9KvqGZWZHqe7utK0/zKU+G9jJ5bZWTajC16scgEKdXY=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=E2qvdZciJTOkuzH5AN3o+Pg2na+BJj9oIW1zUzLteDTgX4Ywc99dKURg+ppoNBvPj brpCQyfKQ4e+cA6QnjyK2dwt5Pq+u7ebq8iMu9wMTme5XnesNd94hPzYBMRJmeDwGT cvD/4GgMcM3jsgLLTWUfNnhfYrHrxIkGSQKHDMT4= Received: by mail-wm1-f43.google.com with SMTP id i16so2808068wmd.3 for ; Fri, 20 Sep 2019 07:46:32 -0700 (PDT) X-Gm-Message-State: APjAAAXVp4L+Dt6J8pfjgQe69qrsHyhLpI8khPWc0efSk/p4tR0zObn8 chGgZvmG49y/09ux/J9sNuUUYty1xaXPu0/DWUnefg== X-Google-Smtp-Source: APXvYqzi2F3mb9UuroEXoe+2WVfgT+1UiPiDEDpH8NFT3s3jHKNvuKWQMPj6DYUanuqSrmX13b1sbBdFlEUEKUgBuWQ= X-Received: by 2002:a1c:3803:: with SMTP id f3mr4123444wma.161.1568990791254; Fri, 20 Sep 2019 07:46:31 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Andy Lutomirski Date: Fri, 20 Sep 2019 07:46:19 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH v2 0/7] Rework random blocking To: Andy Lutomirski Cc: Theodore Tso , LKML , Linux API , Kees Cook , "Jason A. Donenfeld" , "Ahmed S. Darwish" , Lennart Poettering , "Eric W. Biederman" , "Alexander E. Patrakov" , Michael Kerrisk , Willy Tarreau , Matthew Garrett , Ext4 Developers List , linux-man Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 20, 2019 at 7:36 AM Andy Lutomirski wrote: > > This makes two major semantic changes to Linux's random APIs: Hmm. I have at least two issues in here that need fixing: - getrandom() can warn. Whoops. - Repeatedly calling getentropy in GRND_INSECURE mode will interfere will CRNG init. v3 will fix these issues.