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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 26A83C433EF for ; Tue, 5 Oct 2021 23:27:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ED40E6109D for ; Tue, 5 Oct 2021 23:27:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236898AbhJEX25 (ORCPT ); Tue, 5 Oct 2021 19:28:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58412 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236820AbhJEX24 (ORCPT ); Tue, 5 Oct 2021 19:28:56 -0400 Received: from mail-pl1-x631.google.com (mail-pl1-x631.google.com [IPv6:2607:f8b0:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6C5C1C06174E for ; Tue, 5 Oct 2021 16:27:05 -0700 (PDT) Received: by mail-pl1-x631.google.com with SMTP id w11so442908plz.13 for ; Tue, 05 Oct 2021 16:27:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=9OW4RL81pIUdiw+zgh4jW1IlqFN74R1uy0F7HjdiocU=; b=JZe8Zhyu74F7LosaheIebMyt7o4GfPbBCkYP/9wP2Cz5wX4KOE7XbbNeECWc00RqwW wymyCg5V4ISRFq70VFTRDxHHKuIE3mZZh+D57pJGZrVYnSdYfT30twuDKw46x2HF+sfr 7V9upegH4l5xtKqyQvl9xjOqx3XNhO3TBrWHY= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=9OW4RL81pIUdiw+zgh4jW1IlqFN74R1uy0F7HjdiocU=; b=wVbW5POiDonjI4h8WZJWLrYLyu90OT8RQ9LrelhxWyC9t3Py/guiF1BqHOudBC0Bem /Qr03rEhJBjSWFVz+0pS32B4UO8Oc69QZWg0tkJx131TIlGSVQY5EoPEs3zC2RsurTHu cp2YhQh1+QmkM8bucFMNY4ffJoBHJPjAkIT6fx/dXljCvhnT4kbbfC5LRNhAnICAq62o liQuPM4LKWJUOiwt1tkxOCNbCI0FUlNmJL7kXv7IlmScsH4OIBtR02QHs9aMVgOrMtMC pYGT0Fl9YHSv/7/3NqhuvzCQ/tXXpOYNoYL7mFWREoil+jr69FX/luQcfZ9BfNRAVYdE GZQw== X-Gm-Message-State: AOAM533xpsbEhBQ3fdIYL+aGarhu5oIEHFJDGJ9XOTOKCIk643V/8ZmD cKGsVEltesELOiXvPyFgbSIKIw== X-Google-Smtp-Source: ABdhPJxBMXTOtss+AuYYPW5JCi3sHvUzY4RP0Xu+mwOes9zQB+0ckvefsntGWASR/8aWNgdlWzeOtg== X-Received: by 2002:a17:902:ab17:b0:13e:b2e0:58b with SMTP id ik23-20020a170902ab1700b0013eb2e0058bmr7910203plb.9.1633476424794; Tue, 05 Oct 2021 16:27:04 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id c15sm6524084pfp.39.2021.10.05.16.27.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 05 Oct 2021 16:27:04 -0700 (PDT) Date: Tue, 5 Oct 2021 16:27:03 -0700 From: Kees Cook To: Andrew Morton Cc: Chen Jingwen , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Alexander Viro , Michal Hocko , Andrei Vagin , Khalid Aziz , Michael Ellerman , Linus Torvalds Subject: Re: [PATCH] elf: don't use MAP_FIXED_NOREPLACE for elf interpreter mappings Message-ID: <202110051626.0AB43704@keescook> References: <20210928125657.153293-1-chenjingwen6@huawei.com> <202110041255.83A6616D9@keescook> <20211005161212.2eb4ca912d131e72bf09bdd6@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20211005161212.2eb4ca912d131e72bf09bdd6@linux-foundation.org> Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Tue, Oct 05, 2021 at 04:12:12PM -0700, Andrew Morton wrote: > On Mon, 4 Oct 2021 13:00:07 -0700 Kees Cook wrote: > > > Andrew, are you able to pick up [1], BTW? It seems to have fallen > > through the cracks. > > > > [1] https://lore.kernel.org/all/20210916215947.3993776-1-keescook@chromium.org/T/#u > > I added that to -mm on 19 September.: > https://ozlabs.org/~akpm/mmotm/broken-out/binfmt_elf-reintroduce-using-map_fixed_noreplace.patch Ah! Thank you. :) -- Kees Cook