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=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 36D4BC3A59C for ; Fri, 16 Aug 2019 08:21:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 02B652133F for ; Fri, 16 Aug 2019 08:21:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1565943701; bh=45xE287d0eM04My2txp6SH/3Wubo253uv59ZVJNr3VE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=IzfhuGCp5atrNTEHA67u2cV5chhQgZ5npCP60QW/hDSOjgd6GeAlVLvZ3ap29PbB0 RyFrsBFUrDaVmequUVgcVZ6YNe+9OdO2Xy3g2kl2n3IRVN5c6zSmbEjpOd7AyZQEkk IvEyMTVP6MgfhUgbnFCK3yvKGU3g2391QqG4B7Kk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726880AbfHPIVk (ORCPT ); Fri, 16 Aug 2019 04:21:40 -0400 Received: from mail.kernel.org ([198.145.29.99]:58656 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726820AbfHPIVk (ORCPT ); Fri, 16 Aug 2019 04:21:40 -0400 Received: from willie-the-truck (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id BEA64206C2; Fri, 16 Aug 2019 08:21:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1565943699; bh=45xE287d0eM04My2txp6SH/3Wubo253uv59ZVJNr3VE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=NbVyzIfb5MQEr6j7Y68FkNmVHLmnWhZAp/RXXMr37iQb7uEdjcJvTGpAm3OWaxMn7 KoZ3FgZA1MSqEEQUvlKLIfdxnG694Hk9b/RtcaQLEazfJWAb/lFHzrw0i10uDKqAm5 Oqz/4mXpbrFX8rP3Lo6HqdOoJTJbjvoDqsxD3s+g= Date: Fri, 16 Aug 2019 09:21:31 +0100 From: Will Deacon To: Bart Van Assche Cc: syzbot , akpm@linux-foundation.org, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, dvyukov@google.com, hawk@kernel.org, hdanton@sina.com, jakub.kicinski@netronome.com, johannes.berg@intel.com, johannes@sipsolutions.net, john.fastabend@gmail.com, kafai@fb.com, linux-kernel@vger.kernel.org, longman@redhat.com, mingo@kernel.org, netdev@vger.kernel.org, paulmck@linux.vnet.ibm.com, peterz@infradead.org, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, tj@kernel.org, torvalds@linux-foundation.org, will.deacon@arm.com, xdp-newbies@vger.kernel.org, yhs@fb.com Subject: Re: WARNING in is_bpf_text_address Message-ID: <20190816082130.2shhirk53qofn6bj@willie-the-truck> References: <00000000000000ac4f058bd50039@google.com> <000000000000e56cb0058fcc6c28@google.com> <20190815075142.vuza32plqtiuhixx@willie-the-truck> <456d0da6-3e16-d3fc-ecf6-7abb410bf689@acm.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <456d0da6-3e16-d3fc-ecf6-7abb410bf689@acm.org> User-Agent: NeoMutt/20170113 (1.7.2) Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org On Thu, Aug 15, 2019 at 06:39:56PM -0700, Bart Van Assche wrote: > On 8/15/19 12:51 AM, Will Deacon wrote: > > On Sat, Aug 10, 2019 at 05:24:06PM -0700, syzbot wrote: > > > The bug was bisected to: > > > > > > commit a0b0fd53e1e67639b303b15939b9c653dbe7a8c4 > > > Author: Bart Van Assche > > > Date: Thu Feb 14 23:00:46 2019 +0000 > > > > > > locking/lockdep: Free lock classes that are no longer in use > > > > > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=152f6a9da00000 > > > final crash: https://syzkaller.appspot.com/x/report.txt?x=172f6a9da00000 > > > console output: https://syzkaller.appspot.com/x/log.txt?x=132f6a9da00000 > > > > I know you don't think much to these reports, but please could you have a > > look (even if it's just to declare it a false positive)? > > Had you already noticed the following message? > > https://lore.kernel.org/bpf/d76d7a63-7854-e92d-30cb-52546d333ffe@iogearbox.net/ > > From that message: "Hey Bart, don't think it's related in any way to your > commit. I'll allocate some time on working on this issue today, thanks!" Apologies, but I hadn't received that when I sent my initial email. Anyway, just wanted to make sure somebody was looking into it! Will