Received: by 2002:a25:b794:0:0:0:0:0 with SMTP id n20csp5514032ybh; Wed, 7 Aug 2019 07:13:53 -0700 (PDT) X-Google-Smtp-Source: APXvYqxXTOS/xD/vuzER/eVNpEw1L6RdsIAj2HdDdBQ8wIzKbk7KtgYbD0hYt44pBUosy83ZFZRz X-Received: by 2002:a17:902:2ec5:: with SMTP id r63mr8317979plb.21.1565187233898; Wed, 07 Aug 2019 07:13:53 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1565187233; cv=none; d=google.com; s=arc-20160816; b=PM/DaViRtzlC7XHuNR6DAF4bmfN5cPM4DsKf/6gvyQ/Lb1zyvhtxqbNzFGMM3Lnubr tKDgtt6kiPsSP2S37vsu4DLVCZV7+zoGY7ys8zHvtVEQKpDZ0hIf2AG/ABYdFQYzpeEE sguP1MFErtfnKLAwGSx800b+WZKDGjZZU6rTm24V87iY+kBhjOxuTh/dfP20/pbUUNW7 rE4naUSFurkImXswsHF1os9Slg9H965eAcJbHP8QLxn3Q8RuBA9apI3kWFGigOvyXexq N9aWc2Joz2oa7RB29rZz6R5dl2R+kTuw5orVN6OKrCb82hNgyTtAmSC8YAQtlYYCytMq Xjvw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:to:from:subject:message-id:in-reply-to :date:mime-version; bh=+rvcyyJPT124CBjh50veSjwzTuKPjdB1gn6DdCRD4GQ=; b=RxBHz7Gr02bEypIL7ylnDhYa/yz/5QpGnZvHWN18GckONB7ynA+LH//K6WbaPKCs0e kJ8wT7iH18Lhqu7wsaXO5wIxKarK+dOh54hGswyt3d9xRA8kMXnCVaOf5wH6jq6c5zML zfaHOcZPcqcvXwFMTrhU9m1pMTIPZDLrQht69Uoz/of2lVUQWutug+QI0gPnwnp6cpff ao7ImXqfixSTONIjgr11fJ8Vrvwru9so//eWfGym7/UTlkQtsHzyk1y+Oij3tNH+enzl 2eXBkAzPoA4d+SJQFR6v7KeNkY3k6TQiRFbg0G8nmemt9deYQ9H64cMMm/gNj8jiTinr z6sw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id i71si45779065pge.3.2019.08.07.07.13.37; Wed, 07 Aug 2019 07:13:53 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729875AbfHGONB (ORCPT + 99 others); Wed, 7 Aug 2019 10:13:01 -0400 Received: from mail-ot1-f70.google.com ([209.85.210.70]:45339 "EHLO mail-ot1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729408AbfHGONB (ORCPT ); Wed, 7 Aug 2019 10:13:01 -0400 Received: by mail-ot1-f70.google.com with SMTP id b25so54914484otp.12 for ; Wed, 07 Aug 2019 07:13:00 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=+rvcyyJPT124CBjh50veSjwzTuKPjdB1gn6DdCRD4GQ=; b=MTCn1IQYl7vuJ5KjsJZRrv85hRW/xB2fMlYfEHzIh8VBKzkrs0X9nzEr7QQKqt4sAm OCWsG0LvgA9JF5wf2jYSXOJLlP5etuiL17WKb0GknGGd4S0MC03NwElgel31Uj9GCVaf kXZFXzYY1NjF89mLQD1nzuuWst/9ZRbInTsPvvK7MWAziQKwCEQYfz1EEis2q9i0K46k P0IOBouo70KPXz5AVKnE+rQdY9R3v3fXjAqXwq1fGLipHtXfIvv8zg9jCJaiNDJF+1rm 7KBt89r6Fl8VXJwyMW7qNWZX1VaD//bXtBTBgQWPh8zK9lsy1LV87B5pFLW6B/2pVgYo sLiA== X-Gm-Message-State: APjAAAUHP7ue6ACcwm2ap6vGFnENLda/mAp9xPQ2c1RuoGlc+CXdZP8i DwyE1nkPcFGjt5EL2HmUtyO0lVaIe/u6wH6HpOSbnyOSEX6n MIME-Version: 1.0 X-Received: by 2002:a6b:621a:: with SMTP id f26mr8317090iog.127.1565187180660; Wed, 07 Aug 2019 07:13:00 -0700 (PDT) Date: Wed, 07 Aug 2019 07:13:00 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e90d40058f8789e1@google.com> Subject: Re: KASAN: use-after-free Read in device_release_driver_internal From: syzbot To: andreyknvl@google.com, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, oneukum@suse.com, stern@rowland.harvard.edu, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot has tested the proposed patch and the reproducer did not trigger crash: Reported-and-tested-by: syzbot+1b2449b7b5dc240d107a@syzkaller.appspotmail.com Tested on: commit: 6a3599ce usb-fuzzer: main usb gadget fuzzer driver git tree: https://github.com/google/kasan.git kernel config: https://syzkaller.appspot.com/x/.config?x=700ca426ab83faae compiler: gcc (GCC) 9.0.0 20181231 (experimental) patch: https://syzkaller.appspot.com/x/patch.diff?x=1245683c600000 Note: testing is done by a robot and is best-effort only.