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,USER_IN_DEF_DKIM_WL autolearn=unavailable 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 D26BCC3B186 for ; Mon, 10 Feb 2020 15:06:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AAE3D20714 for ; Mon, 10 Feb 2020 15:06:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="u4KpYOas" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729417AbgBJPGy (ORCPT ); Mon, 10 Feb 2020 10:06:54 -0500 Received: from mail-qt1-f196.google.com ([209.85.160.196]:32987 "EHLO mail-qt1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726809AbgBJPGw (ORCPT ); Mon, 10 Feb 2020 10:06:52 -0500 Received: by mail-qt1-f196.google.com with SMTP id d5so5360482qto.0 for ; Mon, 10 Feb 2020 07:06:51 -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=CjdAYxv8VzjHZnR5Agasaslt3NiSkFTfCtLUheMYJAk=; b=u4KpYOas8ua4RoOB6UhyZe4VcPKRIZeBlcC25JMPP48JqRio8CVrZi66anRpju/e2Q X/+f0nx+xq8JHxSJROOvv5uY0kFt2Yi7zqakR8m0DRX1siTn4C7oRZKH13JBroBLkWuM 60BqUoJadOlz24I6KhieOCEIneLqI3UYVUNOFgvvUmP0ee8YHdFpIvtelGa7H7MTIgOQ PldXnhXKl6OHlWwYX71VrV2rypaxw4oySzTXoL0SQO1/t8ze/VRIzw+G7b7+BHreWkjo mNhTkR+xEEkEGAkAKf+y7ipKwNbkGuHDM+AQjQKXz/umPqrGMBCksLCfgFUhgRjVTHTj RXfQ== 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=CjdAYxv8VzjHZnR5Agasaslt3NiSkFTfCtLUheMYJAk=; b=M5c9x8RYey/n6Gxff1JFG36aN9PDnok8tXutiJT7Ut4O1dGoGXZkytvn1O/Us71H2I lgWvCd56L/KvAwSxCOVl1pZPe4P+KRoliPIryloFWxQP3KEo3hgvi8SdCwjhUbNRHnd/ gEyjydYpZPb6vz0v3hYiMneszU5o2XzeRyEc0RxQkKUiSbVvg9z7jXdzTVDYb9U0LeG4 AgyY7T07oC20KU1VUkgomRkR6ApFpbJe+TpQaeXnaEK9V0BWVWlq1AEMGe3FrFTZxNep aPnbqU5xjAffEiQtIGn+zOGO+jbQTNQ15KBi7KppRiMdmoendcX7C6gzZ4CXKr+LV4Y+ 7KwA== X-Gm-Message-State: APjAAAX1ywaYVy/kaWGqsMRH1USqSiGB07N1QlN3hX652Kmny9vLeRby cqkZqZwuJoQgI0VSgGmFb3KkQ8sGqpP2B0q6/QQPdQ== X-Google-Smtp-Source: APXvYqwLvvuZsjf7FcUxigQgUr6KZaAfMVUUnJXR6e8/x++i8a3ywIF+bfSKDSMxZEvqE/0amYLtxlwWsu7Ms7tibOA= X-Received: by 2002:aed:36a5:: with SMTP id f34mr9801648qtb.57.1581347211196; Mon, 10 Feb 2020 07:06:51 -0800 (PST) MIME-Version: 1.0 References: <0000000000003313f0058fea8435@google.com> <8736ek9qir.fsf@miraculix.mork.no> <1574159504.28617.5.camel@suse.de> <87pnho85h7.fsf@miraculix.mork.no> In-Reply-To: From: Dmitry Vyukov Date: Mon, 10 Feb 2020 16:06:39 +0100 Message-ID: Subject: Re: INFO: task hung in wdm_flush To: Tetsuo Handa Cc: Oliver Neukum , syzbot , Andrey Konovalov , Jia-Ju Bai , Sebastian Andrzej Siewior , Colin King , Greg Kroah-Hartman , LKML , USB list , syzkaller-bugs , yuehaibing@huawei.com, =?UTF-8?Q?Bj=C3=B8rn_Mork?= 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, Feb 10, 2020 at 4:03 PM Tetsuo Handa > wrote: > > > > On 2020/02/10 21:46, Tetsuo Handa wrote: > > > On 2020/02/10 19:09, Dmitry Vyukov wrote: > > >> You may also try on the exact commit the bug was reported, because > > >> usb-fuzzer is tracking branch, things may change there. > > > > > > OK. I explicitly tried > > > > > > #syz test: https://github.com/google/kasan.git e5cd56e94edde38ca4dafae5a450c5a16b8a5f23 > > > > > > but syzbot still cannot reproduce this bug using the reproducer... > > > > It seems that there is non-trivial difference between kernel config in dashboard > > and kernel config in "syz test:" mails. Maybe that's the cause... syzkaller runs oldconfig when building any kernels: https://github.com/google/syzkaller/blob/master/pkg/build/linux.go#L56 Is that difference what oldconfig produces?