Received: by 2002:a05:6a10:6006:0:0:0:0 with SMTP id w6csp558785pxa; Thu, 27 Aug 2020 09:23:46 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxbyDM3SuHLjnu5b2A+LSiMW5FMx37LjPXtTQsBuTqCyLNZTXsO9T2hXPfzng5QkqYXqZ8e X-Received: by 2002:a17:906:e251:: with SMTP id gq17mr21257051ejb.445.1598545425805; Thu, 27 Aug 2020 09:23:45 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1598545425; cv=none; d=google.com; s=arc-20160816; b=XDI4fl1AgBNT6fDdLJikqUlG1s3scm+pf6zFbI/mU6COhdCxnHplpLJOnNUxlFVbuI JigdAb8tJKd4/M1+QdQQtwP9h0R50UJrusDxqnj8PVxfltzx7JMAjNCbeh4pww1Rh8/W dVAQGvqqvpEXo9eapQR5cGYOlxFCIeA0KyIrse/6YRF1lkvtBz73bSLARDOKo4eauzOW U2xWY3Q4X1qqFXgygL/VPji6F+bsK8fr87CCVaFmCaomctvmeL3LH4nNJo7hq9EhguXx rRk4NaDH2iT2/oqXE74SI89G1UP3SgpOpucl4mNEWPORAqRjzh2xs7rA+tEZBOoGtbbL hs2g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date; bh=zzYWq9uCT0qjXkzJAAg/7u06RdJipteNSyXZMFgmlW4=; b=uo+IlovvWwmhp/agjJ7H8K6mmsjOv3oY2nUqMBWkLItkrYYWl7V9Szjk2dKqfl5l8Q 3vQ1MiRhZFUsWW8ydQ90VayO8SRCmkB/CRo7OKHxKI024mRdaDqtnS4yZ0FDN4Z/52uh z76RNPoTxhqHwYw5mofsokZ78QZ1ylAY7qSpBXa5G8tqNxHo9aFRhQYSsIOXLWea/7WD Na27uyrofEe5hnkUaijV3Oe0CTquCMnz8/zKcPyNAVZDJ2+Eeqjtq09j7vmCOfbHz4HK GwiVLZ/FfgyyomgerPVVJHFkJAGSmIYENHvEWKFow/Q8b7bPH7zZXR0VoP+PashxBlZ3 Z8rg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id t8si1744341ejx.502.2020.08.27.09.23.23; Thu, 27 Aug 2020 09:23:45 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727883AbgH0QUl (ORCPT + 99 others); Thu, 27 Aug 2020 12:20:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47350 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727827AbgH0QUk (ORCPT ); Thu, 27 Aug 2020 12:20:40 -0400 Received: from nautica.notk.org (ipv6.notk.org [IPv6:2001:41d0:1:7a93::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3D8F7C061264; Thu, 27 Aug 2020 09:20:40 -0700 (PDT) Received: by nautica.notk.org (Postfix, from userid 1001) id CB8B4C01B; Thu, 27 Aug 2020 18:20:38 +0200 (CEST) Date: Thu, 27 Aug 2020 18:20:23 +0200 From: Dominique Martinet To: Mark Brown Cc: syzbot , alsa-devel@alsa-project.org, daniel.baluta@nxp.com, davem@davemloft.net, ericvh@gmail.com, kuba@kernel.org, lgirdwood@gmail.com, linux-kernel@vger.kernel.org, lucho@ionkov.net, netdev@vger.kernel.org, perex@perex.cz, rminnich@sandia.gov, syzkaller-bugs@googlegroups.com, tiwai@suse.com, v9fs-developer@lists.sourceforge.net Subject: Re: INFO: task can't die in p9_fd_close Message-ID: <20200827162023.GD31016@nautica> References: <000000000000ca0c6805adc56a38@google.com> <20200826104919.GE4965@sirena.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20200826104919.GE4965@sirena.org.uk> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Mark Brown wrote on Wed, Aug 26, 2020: > On Wed, Aug 26, 2020 at 03:38:15AM -0700, syzbot wrote: > > > console output: https://syzkaller.appspot.com/x/log.txt?x=10615b36900000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=a61d44f28687f508 > > dashboard link: https://syzkaller.appspot.com/bug?extid=fbe34b643e462f65e542 > > compiler: gcc (GCC) 10.1.0-syz 20200507 > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15920a05900000 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13a78539900000 > > > > The issue was bisected to: > > > > commit af3acca3e35c01920fe476f730dca7345d0a48df > > Author: Daniel Baluta > > Date: Tue Feb 20 12:53:10 2018 +0000 > > > > ASoC: ak5558: Fix style for SPDX identifier > > This bisection is clearly not accurate, I'm guessing the bug is > intermittent and it was just luck that landed it on this commit. It's a bug that's been present since day 1 pretty much. I have a fix that had been overcooking for a while which I had planned to take in this cycle -- I'll submit to -next during next week, so hopefully syzbot will be able to spend its time more usefully after that. -- Dominique