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=-3.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 BB2BFC43461 for ; Wed, 9 Sep 2020 13:34:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6C02A2087C for ; Wed, 9 Sep 2020 13:34:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730233AbgIINcx (ORCPT ); Wed, 9 Sep 2020 09:32:53 -0400 Received: from mail-il1-f207.google.com ([209.85.166.207]:44686 "EHLO mail-il1-f207.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730336AbgIINTH (ORCPT ); Wed, 9 Sep 2020 09:19:07 -0400 Received: by mail-il1-f207.google.com with SMTP id j11so1987813ilr.11 for ; Wed, 09 Sep 2020 06:19:07 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=E3DC8oOc5Wv1kvi7EPmKvvKbe0T5xVJz7MHLJ6IZAsg=; b=g4o2pkDAP/5SYWV2TVenm1sJUrEUaQs+9bnw6u6OQEqQa+NbqtVhIwnVEM6+iJ/woq NiTwB689Mhj0R0MHeCBGvRr0VM1AQtiU0bydYyb9n+VQGWkOVRt2exP9mbxsk/BQx3cO +/ahYLUVxnSBW8jIsY8BfypSpdc8SHrJnaE1W/QKZjmHgZA4Zsd7p8TTA+O5Jj/wPI/F yjS/CXpRI274wLlY0skHlg3lRdHtxtQovzbEtOWbVSsc/85S8LGhgsikW9TUkOMhPWdx WCEguDoBKANoSVr8+bV6VX8T9hUdXAlZnOLie4FAMsYsLOPUQalm3y873owAv6KGqREk AV/w== X-Gm-Message-State: AOAM530yzeOVGxzfpAocCq1sy+6x2hEI3jlM4qwsi+fH2vM4y7lELpXE Nr80+4FZYRkBcOGEYrB//Tw24XFooxsurozuPDh0WW8qStKC X-Google-Smtp-Source: ABdhPJxcQGxT5cF6oLXv72p5cpZNhvBHKbh1UCXK1nE51/J5GhQOYBlu+S/ZZWIBLCIbFJoMJf4qNwXxdUWZdLn5fycpFuyANkem MIME-Version: 1.0 X-Received: by 2002:a92:906:: with SMTP id y6mr3753912ilg.106.1599657546811; Wed, 09 Sep 2020 06:19:06 -0700 (PDT) Date: Wed, 09 Sep 2020 06:19:06 -0700 In-Reply-To: <0000000000002cdf7305aedd838d@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000d7136005aee14bf9@google.com> Subject: Re: WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected (2) From: syzbot To: bfields@fieldses.org, boqun.feng@gmail.com, jlayton@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk, will@kernel.org Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this issue to: commit f08e3888574d490b31481eef6d84c61bedba7a47 Author: Boqun Feng Date: Fri Aug 7 07:42:30 2020 +0000 lockdep: Fix recursive read lock related safe->unsafe detection bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13034be1900000 start commit: dff9f829 Add linux-next specific files for 20200908 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=10834be1900000 console output: https://syzkaller.appspot.com/x/log.txt?x=17034be1900000 kernel config: https://syzkaller.appspot.com/x/.config?x=37b3426c77bda44c dashboard link: https://syzkaller.appspot.com/bug?extid=22e87cdf94021b984aa6 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=108b740d900000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12daa9ed900000 Reported-by: syzbot+22e87cdf94021b984aa6@syzkaller.appspotmail.com Fixes: f08e3888574d ("lockdep: Fix recursive read lock related safe->unsafe detection") For information about bisection process see: https://goo.gl/tpsmEJ#bisection