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=-13.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_IN_DEF_DKIM_WL autolearn=ham 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 57E1FC433FF for ; Thu, 8 Aug 2019 12:44:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2A82821874 for ; Thu, 8 Aug 2019 12:44:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="kcWgpNxu" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732595AbfHHMoM (ORCPT ); Thu, 8 Aug 2019 08:44:12 -0400 Received: from mail-ot1-f66.google.com ([209.85.210.66]:36051 "EHLO mail-ot1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732254AbfHHMoM (ORCPT ); Thu, 8 Aug 2019 08:44:12 -0400 Received: by mail-ot1-f66.google.com with SMTP id r6so117931128oti.3 for ; Thu, 08 Aug 2019 05:44:11 -0700 (PDT) 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=AqsGEn8rizmWX1sBUGJyfxqTVFx/hWSppDVhCUizhj0=; b=kcWgpNxuLsqlIeN+bHKdSpfWQbrD8oiKypyumjK3k5/kzTNxb3AQoURhbCK39Sd6Tc P5rMBeJI3GTVUEdTjw2Ifwpj3l/nEom6Jgx4X+YL156jCBD00jAI0I2cKV8c6i+6qb8F vNHLcXmorSzI7Dfa7JznfKLTfoeHKpwe8gofHHK4eBqZtBBm8VahkRj+Vh+D34k1eqJ4 tzNdqSp5Eh5zcOp37YskGxl5BSW6zxhLQk2spv9GWA6zxBMUhk7zN6Cdx0tPNVpwYqwM HoFcYMwR+DLfqXHfC+UrFEtIa4lsexeV32EEKVgcaTpQqHC2YOY6sHkyE1s3I9dbiFpR PiMw== 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=AqsGEn8rizmWX1sBUGJyfxqTVFx/hWSppDVhCUizhj0=; b=F254UILNx82NxQPoKOhA9E67pGgvteUH6B9jlfDnW3qneCWOYZE8wnGLGq0wEMiGY5 7DsmhdLc1VXxn8pqv0pzff6BJ7A7SzIsnYKXf+3XmzxNnOeY044/R9ue3GjGnR3nX1n/ dLrvxrKyc1cth6+P0E/mtpyzhZNLzpVw1zvHiF3Yvu8u2NfkdgFEHfX75FesdVQnbjoe SM9N5//NYS2HqiX/XnplqF7aOnsZbRNOqdsLMMHDBqIbRa1+F/4vMp/dLCHcOiKat3Ww xsbshAy8wIF0wlrt5CKUukVVMRPB8tQdJlYoNvMlh33B2l1YDm04bcGYF1nnF8Ev3JMB rsXQ== X-Gm-Message-State: APjAAAVTXLWX/w2zWc6fDn64co1yo85pZ1NajuAuvwsjkm5J2TOrxUZD mtqax11xXpWhd7T3bqKL45RbM757Hzy5wG2OtaRRiA== X-Google-Smtp-Source: APXvYqz+ugusoV+l//v8/73/4cQcyL006ICoTXboeoL3XHGwudUfJ2JN8AStIr71ZDFwWW7X8uEwNh8LaUB2KOzjzis= X-Received: by 2002:a5d:80d6:: with SMTP id h22mr15137157ior.231.1565268250720; Thu, 08 Aug 2019 05:44:10 -0700 (PDT) MIME-Version: 1.0 References: <000000000000f365b6058f8b07ca@google.com> In-Reply-To: From: Dmitry Vyukov Date: Thu, 8 Aug 2019 14:43:57 +0200 Message-ID: Subject: Re: KASAN: use-after-free Read in device_release_driver_internal To: Andrey Konovalov Cc: Alan Stern , syzbot , LKML , USB list , Oliver Neukum , 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 Thu, Aug 8, 2019 at 2:28 PM Andrey Konovalov wrote: > > On Wed, Aug 7, 2019 at 8:31 PM Alan Stern wrote: > > > > On Wed, 7 Aug 2019, syzbot wrote: > > > > > 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=132eec8c600000 > > > > > > Note: testing is done by a robot and is best-effort only. > > > > Andrey, is there any way to get the console output from this test? > > Dmitry, would it be possible to link console log for successful tests as well? Yes. Start by filing a feature request at https://github.com/google/syzkaller/issues