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=-6.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_PASS,URIBL_BLOCKED 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 83D47C169C4 for ; Wed, 6 Feb 2019 03:42:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 51DA5218A1 for ; Wed, 6 Feb 2019 03:42:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="LtA+9IsU" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727004AbfBFDmK (ORCPT ); Tue, 5 Feb 2019 22:42:10 -0500 Received: from mail-yw1-f66.google.com ([209.85.161.66]:33403 "EHLO mail-yw1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725981AbfBFDmK (ORCPT ); Tue, 5 Feb 2019 22:42:10 -0500 Received: by mail-yw1-f66.google.com with SMTP id p17so2657667ywg.0; Tue, 05 Feb 2019 19:42:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=uuk/Rx3fe36tfTHzRztmfd0lDXHNL10LU3kOZdp1hLE=; b=LtA+9IsUZ0PY7OKLz28eIcTe4UFsH4e0/x7f+27OPl86WkK2jL2Hu6qOpe9dK+v5nt /f+UZZ0cXYFy2JIrwlIs9+bagKzdSEqlYmhRgWfItSQsU2FExcTTVA9YWYkf1Kyuskzg acnPdlIHnx/FUIuJwJ14VxFLqyyVGLA8Y4OBp1PcuX6GqLVeBx8Qgqh12aJZqRYCg7b6 GCogJBrbAjXarCPbEmdhF++mWJWdI224CincQXcceLBRw12X7356hwJHGFSmaCzIyjIY K6VFyL9GsW7AGvMlVINxVRuz4GCYP4q3R3x0tLczmYnbpvMOzsrs6/zCuJtNHC911YMu dSYQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=uuk/Rx3fe36tfTHzRztmfd0lDXHNL10LU3kOZdp1hLE=; b=gcP4s0kzq0Zidr3+fuxtHquhmbd6+bBQExV5/oB21VHMvKLH6LP+b+O/hWeC2SgqF1 oOJaLC5K/e9kc35ne7UvBWwcCw32hKyrjjDK6gwKAOr6LQV2a/1bDzn9cW78Xr1l8si+ 3CSf08JphEBps3XLRx1+oxfzLv/DyOTLmAPbMb/UADvDFhZ6qTa3cN3St8xw/aXtAFu3 T7FSGh6BSBTbiw8XGabvRO0KkxtEsUTI+YZjuQrFUqsRt3J45JLN4obIXAHZx7OpKcpv +ZwT06Z8Pt0ztpg7GPH8SWceeNaPDGEAr0Goz9uwZh6mDaDM1sIqvlFlnrLp6KVUNGsu 6OHg== X-Gm-Message-State: AHQUAuYhwp58+BKE5CuY/dGeprIcpekEcN+bf3sFycASKT/QngEo3YWI 25e9xrQF6gsIhE+/6RNBrT6GYBA7 X-Google-Smtp-Source: AHgI3IaMPeW4EjK/tL+dSKvp6jgPGkFf/2HkABb8VCUawam8I9to5SczxgV/zsRoUn78RWAQEEUAKg== X-Received: by 2002:a81:b341:: with SMTP id r62mr6922350ywh.65.1549424529277; Tue, 05 Feb 2019 19:42:09 -0800 (PST) Received: from [192.168.86.235] (c-73-241-150-70.hsd1.ca.comcast.net. [73.241.150.70]) by smtp.gmail.com with ESMTPSA id w2sm1825993ywc.63.2019.02.05.19.42.07 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 05 Feb 2019 19:42:08 -0800 (PST) Subject: Re: KASAN: use-after-free Read in __wake_up_common_lock To: Dmitry Vyukov , syzbot , Eric Dumazet Cc: Karsten Keil , LKML , netdev , syzkaller-bugs References: <000000000000c2e17f0580b3387c@google.com> From: Eric Dumazet Message-ID: <6f9de558-6447-b64d-33c2-77bfc9f7aec6@gmail.com> Date: Tue, 5 Feb 2019 19:42:06 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On 02/05/2019 07:28 PM, Dmitry Vyukov wrote: > On Wed, Jan 30, 2019 at 10:02 PM syzbot > wrote: >> >> Hello, >> >> syzbot found the following crash on: >> >> HEAD commit: 62967898789d Merge git://git.kernel.org/pub/scm/linux/kern.. >> git tree: upstream >> console output: https://syzkaller.appspot.com/x/log.txt?x=10f0bf08c00000 >> kernel config: https://syzkaller.appspot.com/x/.config?x=4fceea9e2d99ac20 >> dashboard link: https://syzkaller.appspot.com/bug?extid=fb065bc06d3d4054be6f >> compiler: gcc (GCC) 9.0.0 20181231 (experimental) >> >> Unfortunately, I don't have any reproducer for this crash yet. >> >> IMPORTANT: if you fix the bug, please add the following tag to the commit: >> Reported-by: syzbot+fb065bc06d3d4054be6f@syzkaller.appspotmail.com > > I assume this is also fixed by: > > #syz fix: mISDN: fix a race in dev_expire_timer() Yes this looks very probable, thanks.