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=-8.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL 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 85014C33CB1 for ; Mon, 27 Jan 2020 12:29:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 55397215A4 for ; Mon, 27 Jan 2020 12:29:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="kyngqvLL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730617AbgA0M3H (ORCPT ); Mon, 27 Jan 2020 07:29:07 -0500 Received: from mail-pj1-f65.google.com ([209.85.216.65]:40803 "EHLO mail-pj1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730206AbgA0M3H (ORCPT ); Mon, 27 Jan 2020 07:29:07 -0500 Received: by mail-pj1-f65.google.com with SMTP id 12so1650758pjb.5 for ; Mon, 27 Jan 2020 04:29:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=h1R6WgPaLfjprnwT2K/UdFzkWhfqg+Wgh1Aa2jhCg0M=; b=kyngqvLLf3+MJMnVXsCplq5vDbb0JfZH1dTrEG0ryUa7zh+3I64JbYu9R3L1CxVb/a Xo6urOcr8ADLoISKgDXoGJSd/zkVFTiRv174duzJgZPi8UOfUvkGdgcHMT08TCrGH3AA Hr0pSULJWzoHk0pkXOUQiq7JrmKOGqqsQTxMU37WobJ9OPtBtemdL585dgUDsC7GBMdR iKHXbSk+Qdks7U32g84daLQ5o2ekHG4kOPnoUeWM3kTy6S8SUxJhMtQDpx1AKg2IeDHP o248tw9F0wR/82oFB1vZqwc6+srMdD/0TxOOVQlgJtC3CvYA32rel3tI/xG4O8LUvUJY FvPw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=h1R6WgPaLfjprnwT2K/UdFzkWhfqg+Wgh1Aa2jhCg0M=; b=if4uBuyWL9oxoAuiKufPvrOkgp7XAzlqRp47uBvN76II3AWml/zEZdJyG2/ZX8ETXv bq8qMLXC4RlC4LTxml0nBKWZJZreSIzL7FMM1vB4ZaPdotHa61pzNunf/aItDWGfxXBY VGFK7WQrffxR8B9vseVn8zJ4gM+BQvyDlB/83HArrlyTNffHA7u7+alcUwB5f9dl3Edg wwHFMBd+9tPezCh8Vps0pc56cOxkS4ArWyrAqZk37CHz2hyxBZYW4WiE0BO/N2WFRkuG DIRoj1TosN/Q0NaH/Jc/JM7wZHZd3HSLRZw8mxqEOJYhFa8wnDtmWN/9ahLG8TqW4b7R dxWA== X-Gm-Message-State: APjAAAXagMcMERebFE8l9BHL2IlLtkulnjzXP8it4USnM5XfO+7BZuAJ t2wuzIVNNa1UE2Owx6ASnMw9E6UyNLRQlt0Qd1vtqg== X-Google-Smtp-Source: APXvYqwbkq6UEFBP55j3Hu+JAlu5Cyx+6MQ4jxtADqpUnjtOkwWS78sgZ2BBaiYS2fpkGLv6HL6e7mZyBq8tqwh4L+8= X-Received: by 2002:a17:902:704b:: with SMTP id h11mr18100629plt.147.1580128146719; Mon, 27 Jan 2020 04:29:06 -0800 (PST) MIME-Version: 1.0 References: <0000000000004dbaf2059c193a36@google.com> <20200126024957.11392-1-hdanton@sina.com> <20200127092850.GX1847@kadam> In-Reply-To: <20200127092850.GX1847@kadam> From: Andrey Konovalov Date: Mon, 27 Jan 2020 13:28:55 +0100 Message-ID: Subject: Re: KASAN: use-after-free Read in hiddev_disconnect To: Dan Carpenter Cc: Hillf Danton , syzbot , Benjamin Tissoires , Jiri Kosina , "open list:HID CORE LAYER" , LKML , USB list , syzkaller-bugs Content-Type: text/plain; charset="UTF-8" Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org On Mon, Jan 27, 2020 at 10:29 AM Dan Carpenter wrote: > > I already fixed this bug in an earlier thread. > > Syzbot always reports a use after free as two separate bugs, a read > after free and a write after free. It's too much hassle to mark all > the duplicates. > > regards, > dan carpenter > > #syz dup: KASAN: use-after-free Write in hiddev_disconnect