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=-8.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS 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 338D5C48BDF for ; Sun, 13 Jun 2021 03:32:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0021861019 for ; Sun, 13 Jun 2021 03:32:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231640AbhFMDeH (ORCPT ); Sat, 12 Jun 2021 23:34:07 -0400 Received: from mail-il1-f199.google.com ([209.85.166.199]:34653 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230281AbhFMDeG (ORCPT ); Sat, 12 Jun 2021 23:34:06 -0400 Received: by mail-il1-f199.google.com with SMTP id c11-20020a928e0b0000b02901e829148382so5870887ild.1 for ; Sat, 12 Jun 2021 20:32:06 -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=WqYJoqJsyMYgUdC6b62PxEbDszhLAQSkrOXeTsrlnio=; b=jGI+q56H3qEK+Btpu68YP4DjApILb1A+/fXbuMKG2SsVLYtY+vr3Cwl0uObN1uINgX JDGSQpqLR+g2iCTxZ236ClpQybzFPPtbUJjunZMVb5HAIuPwqFAVMSzguRj/4UfDVAhL pIPDSr6fWSFzftSiAvZyFVdEGiiOMgnfY0PHqWMBxcVcDGqPdxrElC7zD8yBkn/Y/geF orX3JiDOOMGi7GKjvxnS+0rLAedl6w3xH+2UpqMJMCtq6OVrz+6ZtkjX0Fy3oB6Hv3ja 2HBmS5iVx/7eUbnRTEjF1pTuyghdgqSUVGQrq5HP8i06KMN6SFtGPdGL7WGz0rJI+A6U cL9w== X-Gm-Message-State: AOAM5333ne44Of+7jGGuAU4PWe/Mhma0tOlSgoLqoqvtVH302bxuHSgN dKbIVbUlSwXQgk6NXNZ3vHrXythPhD9i4nPpRdNa/raOcnen X-Google-Smtp-Source: ABdhPJzDOFEG6Wg4cWREEDblKTALjgnN8DAxe+xCPOjk7jLrBUKsgnxTA8ujHlnxJZ0WJz9qqJIR7tuhzNoFGg5z3L7qAMNvUCGf MIME-Version: 1.0 X-Received: by 2002:a92:c569:: with SMTP id b9mr8679474ilj.3.1623555126267; Sat, 12 Jun 2021 20:32:06 -0700 (PDT) Date: Sat, 12 Jun 2021 20:32:06 -0700 In-Reply-To: <0000000000003853da05c39afd00@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000093166f05c49d62ea@google.com> Subject: Re: [syzbot] kernel BUG in mpage_prepare_extent_to_map From: syzbot To: adilger.kernel@dilger.ca, duyuyang@gmail.com, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@kernel.org, peterz@infradead.org, syzkaller-bugs@googlegroups.com, tytso@mit.edu Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org syzbot has bisected this issue to: commit 68e9dc29f8f42c79d2a3755223ed910ce36b4ae2 Author: Yuyang Du Date: Mon May 6 08:19:36 2019 +0000 locking/lockdep: Check redundant dependency only when CONFIG_LOCKDEP_SMALL bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12f2bda8300000 start commit: ad347abe Merge tag 'trace-v5.13-rc5-2' of git://git.kernel.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=11f2bda8300000 console output: https://syzkaller.appspot.com/x/log.txt?x=16f2bda8300000 kernel config: https://syzkaller.appspot.com/x/.config?x=30f476588412c065 dashboard link: https://syzkaller.appspot.com/bug?extid=99043e2052d9c50c81fc syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1204231fd00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1324e4d0300000 Reported-by: syzbot+99043e2052d9c50c81fc@syzkaller.appspotmail.com Fixes: 68e9dc29f8f4 ("locking/lockdep: Check redundant dependency only when CONFIG_LOCKDEP_SMALL") For information about bisection process see: https://goo.gl/tpsmEJ#bisection