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=-3.9 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 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 57019C433DF for ; Sun, 26 Jul 2020 18:12:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3D3F420773 for ; Sun, 26 Jul 2020 18:12:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="MVyeUEfb" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726666AbgGZSMZ (ORCPT ); Sun, 26 Jul 2020 14:12:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48140 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726043AbgGZSMZ (ORCPT ); Sun, 26 Jul 2020 14:12:25 -0400 Received: from mail-qt1-x841.google.com (mail-qt1-x841.google.com [IPv6:2607:f8b0:4864:20::841]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 600FBC0619D2; Sun, 26 Jul 2020 11:12:25 -0700 (PDT) Received: by mail-qt1-x841.google.com with SMTP id 6so10647751qtt.0; Sun, 26 Jul 2020 11:12:25 -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; bh=sWvoytYgdWuVZpnsHNqepIQUSxkaD87xtrtLEKkqxWY=; b=MVyeUEfbyS3VZjAkUDRUL1xOAzcfaQcd8KU7aoJ4z62BDQBGfr8iG0+ajJoqOZqJIK YQRZOu53+llVUz4LPxfdqQUWLZ4umPzuU+Djvnfx4znXYIT5DI2j1IKfxzS/3z8AcSMV g/kTOEIb7fqZm0t6iOpgttv1EM7rot3vi9eH2Y+dZcLgljzLwP++VjViuQ5QslcR0EnW sdKyWU9FBJW8VyZZPjrOnb1cjzh6zu6GCN6fhCaFCxpVFK/x3DXLYTGGdQLcb3d7/kGA B5EUJmrLgMbxDNeJJ1J5FqDy/nchpFM56Z7LLHFhRmJQuS7oBhaOW83FWcB4PvteEm5/ fdqg== 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; bh=sWvoytYgdWuVZpnsHNqepIQUSxkaD87xtrtLEKkqxWY=; b=YfI8RN0/upf6yFN+KqEBIUGvhZZVNqnom9VpbR2YTnuoF9q/KlOkx4QCfhPN5Pz9D1 /SkRHs6xbgNMGjM7G4YUIF4huPHdFXWxQGP/sBgjMgO61c4EyNOOP3mR516H8Ps5KuOJ zFr2J0cneYtuIJyvxTSRMfsjy3RtBTN8c3lu9hCMAYSQFjbYmvPPfVksclXN1/bHHd+B FxN+uak4ouPndnj4aLcbwIBtB+o47gGw+MidOubvJX4Rdl9oukaA0GravsrmuAuySFu3 a1p8CgPzlnLInAhGo5jG4POx9Cs/ACzNzteMqDms4XSDFAhoPyFj2j0M1Q7Jmfv2L287 b3CA== X-Gm-Message-State: AOAM531MMIgTfEAKshn5xvnytmTWt/1cnNRgSOCu0IDQFUPAeRjf2q7f 9WDH4G+b7rYNF0d8Vmhgjg== X-Google-Smtp-Source: ABdhPJxKGSTuzHcLZGMGS82EEnlAeefUmZtiIGxBpjEXSvwnMIf7j9zEmOsoxXFdzO5wAarhaL0o7g== X-Received: by 2002:ac8:6793:: with SMTP id b19mr9261706qtp.333.1595787144680; Sun, 26 Jul 2020 11:12:24 -0700 (PDT) Received: from PWN (c-76-119-149-155.hsd1.ma.comcast.net. [76.119.149.155]) by smtp.gmail.com with ESMTPSA id j15sm1885535qkl.63.2020.07.26.11.12.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 Jul 2020 11:12:24 -0700 (PDT) Date: Sun, 26 Jul 2020 14:12:22 -0400 From: Peilin Ye To: Laurent Pinchart Cc: Mauro Carvalho Chehab , Greg Kroah-Hartman , syzkaller-bugs@googlegroups.com, Hans Verkuil , Sakari Ailus , Arnd Bergmann , Vandana BN , Ezequiel Garcia , Niklas =?iso-8859-1?Q?S=F6derlund?= , linux-kernel-mentees@lists.linuxfoundation.org, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [Linux-kernel-mentees] [PATCH] media/v4l2-core: Fix kernel-infoleak in video_put_user() Message-ID: <20200726181222.GB49356@PWN> References: <20200726164439.48973-1-yepeilin.cs@gmail.com> <20200726173044.GA14755@pendragon.ideasonboard.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200726173044.GA14755@pendragon.ideasonboard.com> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Sorry, by this code example: char *p = (char *)&vb32; int i; for (i = 0; i < sizeof(struct vb32); i++, p++) printk("*(p + i): %d", *(p + i)); actually I meant: char *p = (char *)&vb32; int i; for (i = 0; i < sizeof(struct vb32); i++) printk("*(p + i): %d", *(p + i)); But the idea is the same. Thank you, Peilin Ye