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=-0.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SORTED_RECIPS,SPF_PASS, T_DKIMWL_WL_MED,URIBL_BLOCKED,USER_AGENT_NEOMUTT 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 E8070C6778A for ; Mon, 9 Jul 2018 10:26:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A065820877 for ; Mon, 9 Jul 2018 10:26:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=shutemov-name.20150623.gappssmtp.com header.i=@shutemov-name.20150623.gappssmtp.com header.b="hdlWkGT3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A065820877 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=shutemov.name Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933036AbeGIK0Z (ORCPT ); Mon, 9 Jul 2018 06:26:25 -0400 Received: from mail-pf0-f195.google.com ([209.85.192.195]:38014 "EHLO mail-pf0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932427AbeGIK0X (ORCPT ); Mon, 9 Jul 2018 06:26:23 -0400 Received: by mail-pf0-f195.google.com with SMTP id x13-v6so3434578pfh.5 for ; Mon, 09 Jul 2018 03:26:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=shutemov-name.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=pgauaGfXbwUaP0MxzKX0JYweqOQRxWsXGdFeUrh8jCU=; b=hdlWkGT3l/laiN9yhv6w7rqcLLaybSYskQTpde+MQpDEvEVA6DR/4FH/fBDrz6X2O3 iTzZ8rI3C+yGYxSngTlcFO5GI9/fYH/gyC2V9R6ZOfXU/rvHozS87cFAegAHXR/5qQ6J 1Svc5U+8C9xOqGrRxQdJNc0+uc0xh2Ms3lnoPIo7qvagB3W568uD0ra7/f7gn+aD91DA VT0nhzqPAooCDntfveJH6pcU2W6cfHaGjQyk5JGQK+2KqCuvvPDrJJAhzB6NXEiSHTQm KSc+QmOeqByT6lYCEhA5y97uXvrjnXbxx/ktlYKm1wfu5qVoxl5vJV/dExUMRMzxLi9Y V/qw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=pgauaGfXbwUaP0MxzKX0JYweqOQRxWsXGdFeUrh8jCU=; b=gNkJn94MS8SSEFxmfV6GJJv97i/fvwxfdSgbTH67jhRIVLmbJMDGC6INuJLV4yHTeJ W2uMxOWXWUoMLfqMyISVnQkDkam+zH65VMlaOoqptMagg7rkfdREgpjuKJsF+yMHOtDp GO2ZNsAuh48b15LgohRqsGLp83mIkpYBan+43wktJc04KlB5y8hwJodWa3TN/dETZ1be pQJG6mBrnPjSMz4wHCFY1higXUXNqoK8j+goIY59G73+8GWryL8sls7bce3/C879FIbr WPv8DBktwMCouI9TTSW7EvAtTifbLHVm+R/1aRePgiCKlhNxNFlgpoE6vEkgq2l4Z44Z ugPw== X-Gm-Message-State: APt69E14BvoP2Ep8uMTeaNdEhIsK2RRWYUVVLuS7FJ50YOuxWErzQOYa vdxpXlSXQvBj99EN+EtN2JbwXQ== X-Google-Smtp-Source: AAOMgpdgowmdbPEjYcP2asq7R19mgNfry+0tehVQxPpdCdeQ2/HhDvNEY8RUmOog29Te27fi+oTenA== X-Received: by 2002:a65:5141:: with SMTP id g1-v6mr18184002pgq.418.1531131983442; Mon, 09 Jul 2018 03:26:23 -0700 (PDT) Received: from kshutemo-mobl1.localdomain ([134.134.139.83]) by smtp.gmail.com with ESMTPSA id b1-v6sm14808046pfa.181.2018.07.09.03.26.22 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 09 Jul 2018 03:26:22 -0700 (PDT) Received: by kshutemo-mobl1.localdomain (Postfix, from userid 1000) id 484B630003D; Mon, 9 Jul 2018 13:15:58 +0300 (+03) Date: Mon, 9 Jul 2018 13:15:58 +0300 From: "Kirill A. Shutemov" To: syzbot Cc: akpm@linux-foundation.org, dan.j.williams@intel.com, jglisse@redhat.com, kirill.shutemov@linux.intel.com, ldufour@linux.vnet.ibm.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mhocko@suse.com, minchan@kernel.org, ross.zwisler@linux.intel.com, syzkaller-bugs@googlegroups.com, willy@infradead.org, ying.huang@intel.com Subject: Re: kernel BUG at mm/memory.c:LINE! Message-ID: <20180709101558.63vkwppwcgzcv3dg@kshutemo-mobl1> References: <0000000000004a7da505708a9915@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0000000000004a7da505708a9915@google.com> User-Agent: NeoMutt/20180622 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Jul 08, 2018 at 10:51:03PM -0700, syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: b2d44d145d2a Merge tag '4.18-rc3-smb3fixes' of git://git.s.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=11d07748400000 > kernel config: https://syzkaller.appspot.com/x/.config?x=2ca6c7a31d407f86 > dashboard link: https://syzkaller.appspot.com/bug?extid=3f84280d52be9b7083cc > compiler: gcc (GCC) 8.0.1 20180413 (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+3f84280d52be9b7083cc@syzkaller.appspotmail.com > > next ffff8801ce5e7040 prev ffff8801d20eca50 mm ffff88019c1e13c0 > prot 27 anon_vma ffff88019680cdd8 vm_ops 0000000000000000 > pgoff 0 file ffff8801b2ec2d00 private_data 0000000000000000 > flags: 0xff(read|write|exec|shared|mayread|maywrite|mayexec|mayshare) > ------------[ cut here ]------------ > kernel BUG at mm/memory.c:1422! Looks like vma_is_anonymous() false-positive. Any clues what file is it? I would guess some kind of socket, but it's not clear from log which exactly. -- Kirill A. Shutemov