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=-6.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 79ADBC433DB for ; Wed, 30 Dec 2020 01:38:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 16D5321D1B for ; Wed, 30 Dec 2020 01:38:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726567AbgL3BiN (ORCPT ); Tue, 29 Dec 2020 20:38:13 -0500 Received: from mail.kernel.org ([198.145.29.99]:47454 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726185AbgL3BiM (ORCPT ); Tue, 29 Dec 2020 20:38:12 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 55BE920867; Wed, 30 Dec 2020 01:37:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1609292251; bh=Zj+7kvWGhFidy9YRhsyGr5SYm2+ujzEHQdRwB6kn1b8=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=DODA7CW0dRa25xofNIoZcBPNVfB+QrSeUoUmboId5tMusHc9ySf4G8wZhtEKW7Xge QwpUXedVeu+0v5rdwlWeVk7rAARlX5ZXAZhKKlXdq+F2I4+UN1ERCTg+whIGXrM84E VBcG4ulG7SM6Tp/eulZZWDcyNR2PgZnivsf7OtH+SyBP4ChJiBHjglozKp6i2AkJis hOu5Ue6Uoc40Kz/Tmf7LYPH7I52Gl1ZHltAXujY9q3j0G+9EobeHYX0aU5byVhp7XI dodMyLUsaX4UEVb8AAgqc+GTRHF6CnpELPTRX0iAlseoFGTjdLcSazdjJH5GLqSFKu BQ5wDSPJAZKYw== Date: Tue, 29 Dec 2020 17:37:30 -0800 From: Jakub Kicinski To: syzbot Cc: davem@davemloft.net, gregkh@linuxfoundation.org, keescook@chromium.org, ktkhai@virtuozzo.com, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pombredanne@nexb.com, stephen@networkplumber.org, syzkaller-bugs@googlegroups.com, tom@herbertland.com, yoshfuji@linux-ipv6.org Subject: Re: inconsistent lock state in ila_xlat_nl_cmd_add_mapping Message-ID: <20201229173730.65f74253@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> In-Reply-To: <000000000000b14d8c05735dcdf8@google.com> References: <000000000000b14d8c05735dcdf8@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 13 Aug 2018 21:40:03 -0700 syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: 78cbac647e61 Merge branch 'ip-faster-in-order-IP-fragments' > git tree: net-next > console output: https://syzkaller.appspot.com/x/log.txt?x=14df4828400000 > kernel config: https://syzkaller.appspot.com/x/.config?x=9100338df26ab75 > dashboard link: https://syzkaller.appspot.com/bug?extid=eaaf6c4a6a8cb1869d86 > compiler: gcc (GCC) 8.0.1 20180413 (experimental) > syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=13069ad2400000 > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+eaaf6c4a6a8cb1869d86@syzkaller.appspotmail.com #syz invalid Hard to track down what fixed this, but the lockdep splat is mixing up locks from two different hashtables, so there was never a real issue here.