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=-4.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 394EFC433E4 for ; Mon, 22 Mar 2021 06:43:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 05DC861970 for ; Mon, 22 Mar 2021 06:43:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230314AbhCVGm6 (ORCPT ); Mon, 22 Mar 2021 02:42:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32994 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229613AbhCVGma (ORCPT ); Mon, 22 Mar 2021 02:42:30 -0400 Received: from mail-lf1-x12d.google.com (mail-lf1-x12d.google.com [IPv6:2a00:1450:4864:20::12d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 418A9C061574 for ; Sun, 21 Mar 2021 23:42:29 -0700 (PDT) Received: by mail-lf1-x12d.google.com with SMTP id 75so19477908lfa.2 for ; Sun, 21 Mar 2021 23:42:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=BI0SksBVekDhNITTbd2OyLPTeuWAqdIXr4zw5rdgDY4=; b=rT1pLGlHXedIj85ivo2NKoO59YJztakYqTe+dhD32r6ny3S06AZhob70HZqZM8s2Yz f0lFGUORbhblFPlGFLphGfzvdxaK0IG/KAXFy6shmR/77l2wBc0KMtKuYdClxxAFuhI/ gMRQt6d7UCxFae1FIOPHWchMIQt7BjYYZVP1bf2M0QydXy+QlGNo/TEo5KjwaCJ+Ym/Z rPGAn5DakEeEI864ydhJUUcDXObh/BbawkW4zkcbFJn3cFy2290lYtiQtDqeFq3K1IBm SDzICMtzivFsgw0NqOS51e13H5kUyi1cytcHdOcWNLIHhljiortHpdlcsOMUNIIF+ONd tLdg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=BI0SksBVekDhNITTbd2OyLPTeuWAqdIXr4zw5rdgDY4=; b=OHBtDviRqsLCX58lkKXsJQBiqDNqiZTvV1l762bCCNi/1zhYSTE9pVs99MIy5O50Di Y/xPeibzDQAp6Bqp9rbpD1KM06JIEt25rb3FElzWXMGOBtxo7Xl1HHEZNI61myqufRgQ El6ZRYXnfFK2sUuHb3fb0rptNuq3tGs+OTnWVgC++wU7XPHc52nvFRLq+4dby6Ej6n8e L9lMzKiq19lS1hnOq5a+7zw6b1zxkPKGdw9Yju6ISgyF5DVixey6XtDFdD818qPylIDk kMs7D6k0rcxpLUYIEKCHv1fkun9sz9kVYf9INPW4tU63cxwgvOValRxTsLCjes8H5Kpb C1uA== X-Gm-Message-State: AOAM531A9sKwBTrKxk/4Br0nFhxNIVSdrwCZADBg1O6zM4fybdS9PEm5 6Tj1p8ie3TWRD1alUAGadTE= X-Google-Smtp-Source: ABdhPJytMY9FE++IzFC4eBjorMrv71QtnAgWazPcZNgq541q/MuwaP4N+cGzhlePja3FotJpNpSwRw== X-Received: by 2002:a05:6512:3089:: with SMTP id z9mr3894636lfd.496.1616395347774; Sun, 21 Mar 2021 23:42:27 -0700 (PDT) Received: from grain.localdomain ([5.18.171.94]) by smtp.gmail.com with ESMTPSA id m24sm1462623lfq.184.2021.03.21.23.42.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 21 Mar 2021 23:42:27 -0700 (PDT) Received: by grain.localdomain (Postfix, from userid 1000) id 2B4B45600A0; Mon, 22 Mar 2021 09:42:26 +0300 (MSK) Date: Mon, 22 Mar 2021 09:42:26 +0300 From: Cyrill Gorcunov To: LKML Cc: Alexey Dobriyan , Oleg Nesterov , Andrey Vagin , Dmitry Safonov <0x7f454c46@gmail.com>, Andrew Morton Subject: Re: [PATCH] prctl: fix overwrite last but one entry in auxv vector Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/2.0.5 (2021-01-21) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Mar 21, 2021 at 11:36:42PM +0300, Cyrill Gorcunov wrote: > Alexey reported that current PR_SET_MM_AUXV (and PR_SET_MM_MAP) overwrite > too many entries on non 64bit kernels. This is because auxv is defined > as an array of longs and in result access to AT_VECTOR_SIZE - 2 entry > is not a type of auxv entry but rather an entry before the last one. Drop this patch, please. I'll make a new version.