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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 04B22C7EE2D for ; Mon, 5 Jun 2023 03:53:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232824AbjFEDxH (ORCPT ); Sun, 4 Jun 2023 23:53:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40222 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232815AbjFEDxF (ORCPT ); Sun, 4 Jun 2023 23:53:05 -0400 Received: from mail-il1-f206.google.com (mail-il1-f206.google.com [209.85.166.206]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 75230B8 for ; Sun, 4 Jun 2023 20:53:03 -0700 (PDT) Received: by mail-il1-f206.google.com with SMTP id e9e14a558f8ab-33bea381b6bso41876605ab.3 for ; Sun, 04 Jun 2023 20:53:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685937183; x=1688529183; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=heg9naicJ0m/vz+NA9tT+yaLHLKfezTG0elobdW9XM0=; b=BQJfAw+06aCSgFW+SDRX/1bg6pszpU75a7eJHGqgmhrVugEmPnKA8ybAGG1RGKxYdl vHHW8CpwTKn3kgPQcREOFyd5k/FhiC9XcfxDYG/6wIjQFLKhMm4HKNLVeCnM7vdjjR+5 GdJBucSWh8ibWoJj/3grwTOjLwmkQx78i50Bk6Oa5uH8l7FCdYU95rM4S+xfQ417IaSt FkKDHYajn7ByHNYVQ8Iy94fs2esW3VzUMCx8vVqHAIkpx8yk2iBNmf7sPrAhwizhCOqr jyT4Tb+gmo7HiGrLG32JU4R1G37261esHlzctq/fqeonIVyb9+lVtMMlUXrPKBBFN82n oAaw== X-Gm-Message-State: AC+VfDzjG9b8i0jAnUFrcu0JwVoXKEh9Q6c+f6qS2ClOj3LyrQQuyhwn 281Cb3hQdflMKp3a7Ch62i+40D4+gQTnqKRQA5aozSRpJpzJ X-Google-Smtp-Source: ACHHUZ4Ox28z1NEMvzQNGurRUJ8MDdpqTw8eQrpe/ttMA9Ivul/hlnY1FklybLmLQeRfl08ByWruVk6XFjNmaQ/Sn6lvR7uaBXsE MIME-Version: 1.0 X-Received: by 2002:a92:c0c7:0:b0:331:3c0d:5a20 with SMTP id t7-20020a92c0c7000000b003313c0d5a20mr6797723ilf.0.1685937182823; Sun, 04 Jun 2023 20:53:02 -0700 (PDT) Date: Sun, 04 Jun 2023 20:53:02 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e55d2005fd59d6c9@google.com> Subject: [syzbot] [ext4?] WARNING: locking bug in ext4_move_extents From: syzbot To: adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.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 Hello, syzbot found the following issue on: HEAD commit: 9561de3a55be Linux 6.4-rc5 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14df9d7d280000 kernel config: https://syzkaller.appspot.com/x/.config?x=7474de833c217bf4 dashboard link: https://syzkaller.appspot.com/bug?extid=7f4a6f7f7051474e40ad compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/661f38eebc53/disk-9561de3a.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d6c5afef083c/vmlinux-9561de3a.xz kernel image: https://storage.googleapis.com/syzbot-assets/7506eac4fc9d/bzImage-9561de3a.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+7f4a6f7f7051474e40ad@syzkaller.appspotmail.com ------------[ cut here ]------------ Looking for class "&ei->i_data_sem" with key init_once.__key.780, but found a different class "&ei->i_data_sem" with the same key WARNING: CPU: 0 PID: 15140 at kernel/locking/lockdep.c:941 look_up_lock_class+0xc2/0x140 kernel/locking/lockdep.c:938 Modules linked in: CPU: 0 PID: 15140 Comm: syz-executor.2 Not tainted 6.4.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 RIP: 0010:look_up_lock_class+0xc2/0x140 kernel/locking/lockdep.c:938 Code: 8b 16 48 c7 c0 60 91 1e 90 48 39 c2 74 46 f6 05 5d 02 92 03 01 75 3d c6 05 54 02 92 03 01 48 c7 c7 a0 ae ea 8a e8 de 8a a3 f6 <0f> 0b eb 26 e8 f5 d0 80 f9 48 c7 c7 e0 ad ea 8a 89 de e8 37 ca fd RSP: 0018:ffffc9000356f410 EFLAGS: 00010046 RAX: 9c96f62a5d44cf00 RBX: ffffffff9009a460 RCX: 0000000000040000 RDX: ffffc9000cf9f000 RSI: 0000000000004e87 RDI: 0000000000004e88 RBP: ffffc9000356f518 R08: ffffffff81530142 R09: ffffed1017305163 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: 1ffff920006ade90 R14: ffff888074763488 R15: ffffffff91cac681 FS: 00007fe07ba3e700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d523000 CR3: 0000000021c7c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: register_lock_class+0x104/0x990 kernel/locking/lockdep.c:1290 __lock_acquire+0xd3/0x2070 kernel/locking/lockdep.c:4965 lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5705 down_write_nested+0x3d/0x50 kernel/locking/rwsem.c:1689 ext4_move_extents+0x37d/0xe40 fs/ext4/move_extent.c:621 __ext4_ioctl fs/ext4/ioctl.c:1352 [inline] ext4_ioctl+0x3870/0x5b60 fs/ext4/ioctl.c:1608 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fe07ac8c169 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe07ba3e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fe07adac120 RCX: 00007fe07ac8c169 RDX: 0000000020000280 RSI: 00000000c028660f RDI: 0000000000000007 RBP: 00007fe07ace7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe5c49953f R14: 00007fe07ba3e300 R15: 0000000000022000 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup