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=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 A20E7C48BD4 for ; Tue, 25 Jun 2019 11:06:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 69E27208CB for ; Tue, 25 Jun 2019 11:06:15 +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="KZ6nyqWz" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730188AbfFYLGO (ORCPT ); Tue, 25 Jun 2019 07:06:14 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:37190 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726419AbfFYLGN (ORCPT ); Tue, 25 Jun 2019 07:06:13 -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=sbf9yRDP3Yzox0S3HTAkQI1gSEm+BLTKu1+5U9y62Ds=; b=KZ6nyqWzVS/mces8IJ/ntqeC6 NlAedHLBNhw8tgPVLOHyPmc67fReCz9H1GO6o/17vuCyKV7oygqx4hhakmfIRSfqa45/pcU54I+6f IVmWmJjV8MrN9AbVDoki3Iv5Q5CDrs5YOIdcxAxbLeSTPimbZyBfooaqK9StpUgRCxQXJuDqjYMwN 5w176CxZvh/ITDB5gKVrtoxGi4+uF4HRfAR/gTuwsntniRFJU5oFlSS8ed4i4FUkcjrddi5By1Zsr KEzJO6i7VQD943msjYVUQwJC7oW1r5iSpnAgnniIg+5RKXTknnSEnpA1OCKEU9vT+qBTDOZ7Fv+m4 kESo63FOw==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=hirez.programming.kicks-ass.net) by bombadil.infradead.org with esmtpsa (Exim 4.92 #3 (Red Hat Linux)) id 1hfjH9-0004O2-8p; Tue, 25 Jun 2019 11:06:11 +0000 Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id B2A4A209FD684; Tue, 25 Jun 2019 13:06:09 +0200 (CEST) Date: Tue, 25 Jun 2019 13:06:09 +0200 From: Peter Zijlstra To: Thomas Gleixner Cc: syzbot , LKML , syzkaller-bugs@googlegroups.com Subject: Re: WARNING in mark_lock Message-ID: <20190625110609.GA3463@hirez.programming.kicks-ass.net> References: <0000000000005aedf1058c1bf7e8@google.com> <20190625110301.GX3419@hirez.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190625110301.GX3419@hirez.programming.kicks-ass.net> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jun 25, 2019 at 01:03:01PM +0200, Peter Zijlstra wrote: > On Tue, Jun 25, 2019 at 08:20:56AM +0200, Thomas Gleixner wrote: > > On Mon, 24 Jun 2019, syzbot wrote: > > > > syzbot found the following crash on: > > > > > > HEAD commit: dc636f5d Add linux-next specific files for 20190620 > > > git tree: linux-next > > > console output: https://syzkaller.appspot.com/x/log.txt?x=162b68b1a00000 syzcaller folks; why doesn't the above link include the actual kernel boot, but only the userspace bits starting at syzcaller start? I was trying to figure out the setup, but there's not enough information here.