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=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT 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 99663C0044C for ; Wed, 31 Oct 2018 19:18:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 583E820657 for ; Wed, 31 Oct 2018 19:18:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="FbB1Bj4z" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 583E820657 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org 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 S1729406AbeKAERy (ORCPT ); Thu, 1 Nov 2018 00:17:54 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:48952 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725731AbeKAERy (ORCPT ); Thu, 1 Nov 2018 00:17:54 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=YT1CPto2P7xaR5NIYHiAT6+LdF03KA0o7+l66u7gHmA=; b=FbB1Bj4z7iJu/0EVFkXApXLpx UuM49MCjnpIpRdoKlPS9+g/hLEEeDR3bQ0Rq897YCu1g9ll2bFSXF979TJ1H0YWieqeXz6HGr8IPk zIR6j7Ear4kvR209ysKDG02DL2rOLHUaidWikUH/05w0r01l0veGZ2BHaeaYnmZwWI84+gz92VIgS Ncy15WM5BDKoKZghKZZR1lX5OKxSd/0HzoXfTWkLtgnX9wUEVFA698s037K9UuWr/jcagkRe1jvNU dCJ+yWWNbqUkTeTL2FALi8wywLLEYabJlnqzzqqGV6V4tYI29tneMWhMaH6yGCqZS5BufRyResRZC 50XovTeOg==; Received: from willy by bombadil.infradead.org with local (Exim 4.90_1 #2 (Red Hat Linux)) id 1gHw0Z-0004S9-Hn; Wed, 31 Oct 2018 19:18:27 +0000 Date: Wed, 31 Oct 2018 12:18:27 -0700 From: Matthew Wilcox To: Dmitry Vyukov Cc: syzbot , Jan Kara , linux-fsdevel , LKML , syzkaller-bugs@googlegroups.com, Al Viro , zwisler@kernel.org Subject: Re: WARNING in get_unlocked_entry Message-ID: <20181031191827.GN10491@bombadil.infradead.org> References: <000000000000c9000f05797370e4@google.com> <20181031031842.GI10491@bombadil.infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.2 (2017-12-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Oct 31, 2018 at 10:46:19AM +0100, Dmitry Vyukov wrote: > On Wed, Oct 31, 2018 at 4:18 AM, Matthew Wilcox wrote: > > On Tue, Oct 30, 2018 at 08:00:03AM -0700, syzbot wrote: > >> syzbot found the following crash on: > >> > >> HEAD commit: 4b42745211af Merge tag 'armsoc-soc' of git://git.kernel.or.. > >> git tree: upstream > >> console output: https://syzkaller.appspot.com/x/log.txt?x=1187d06d400000 > >> kernel config: https://syzkaller.appspot.com/x/.config?x=93932074d01b4a5 > >> dashboard link: https://syzkaller.appspot.com/bug?extid=4fd0c066d82852499145 > >> compiler: gcc (GCC) 8.0.1 20180413 (experimental) > >> > >> Unfortunately, I don't have any reproducer for this crash yet. > > > > Hmmpf. Would have been nice if syzbot had caught this during its tests > > of the -next tree ... > > What -next tree do you mean? If it satisfies the criteria we can add it: > https://github.com/google/syzkaller/issues/592 I meant linux-next, as in the merge of everybody's -next trees. Reading that bug, it seems outside your scope for now ;-(