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 C9496C41513 for ; Sun, 30 Jul 2023 17:08:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229667AbjG3RH7 (ORCPT ); Sun, 30 Jul 2023 13:07:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41242 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229646AbjG3RH6 (ORCPT ); Sun, 30 Jul 2023 13:07:58 -0400 Received: from mail-oo1-f79.google.com (mail-oo1-f79.google.com [209.85.161.79]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6F68010DD for ; Sun, 30 Jul 2023 10:07:57 -0700 (PDT) Received: by mail-oo1-f79.google.com with SMTP id 006d021491bc7-56cc34fcb7dso319428eaf.3 for ; Sun, 30 Jul 2023 10:07:57 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690736877; x=1691341677; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=n9vqfGmyOwEWs7LNdvGwPbGUY0I/3aqKJVRSebRF0Hw=; b=ZRG5cgdFPbWd+M95NWY2OCmWotEU2xhnit6xMeeCL4IXzhEojRTS8ji++Q2T2eHk/T UuKU0UZdXv8r7Mc9CBbXBgrl6W14n2yi+y9dIeBn/z41zZrl6U3CsSzOPjbMIN7UvK+W onKj9RcSdwqMZu8EBDrZG7t9dQ1DV37ho0R7PCjwUKhBGVBwuKO9vk363jd4cIGL+B9D sZHA9e0qnxSYHwuDrS4CX96V2f8Igf8mdFBKWZrLVU97FR45S3FlzzfjNLgOq9wWMzGE byoqMwuoGWTPs+ekdW5EhlxbXJqaQuFRo87cfucyPvo+kweYIAdWTO2KCgrgAoIhGqd8 dAjw== X-Gm-Message-State: ABy/qLbBQ/oCguFBGmRv8Ok5KkrVXUs8oVj7r317ccI1tccertDfoYtd jQZKaEHr0G/yQOlD4+L2ZR5vzFSs+J7GNw8hBT9UqasSxYZ2 X-Google-Smtp-Source: APBJJlFEFPjxuV31812GyI4xDhE5rXq/ScX8K056ndvulUKc1AymUgQvC0H0TbZUGEz1hebbvWrJgmQwsYyN/se+4PTg5jOA3Je+ MIME-Version: 1.0 X-Received: by 2002:a05:6808:17a4:b0:39e:ced7:602b with SMTP id bg36-20020a05680817a400b0039eced7602bmr14547448oib.2.1690736876717; Sun, 30 Jul 2023 10:07:56 -0700 (PDT) Date: Sun, 30 Jul 2023 10:07:56 -0700 In-Reply-To: <000000000000a3d67705ff730522@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f20fc00601b75a80@google.com> Subject: Re: [syzbot] [btrfs?] kernel BUG in prepare_to_merge From: syzbot To: clm@fb.com, dsterba@suse.com, josef@toxicpanda.com, linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org syzbot has found a reproducer for the following issue on: HEAD commit: d31e3792919e Merge tag '6.5-rc3-smb3-client-fixes' of git:.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17afd745a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=9d670a4f6850b6f4 dashboard link: https://syzkaller.appspot.com/bug?extid=ae97a827ae1c3336bbb4 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15278939a80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14dd3f31a80000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-d31e3792.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c6c2342933c9/vmlinux-d31e3792.xz kernel image: https://storage.googleapis.com/syzbot-assets/42df60b42886/bzImage-d31e3792.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/78ffd1ddff6c/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ae97a827ae1c3336bbb4@syzkaller.appspotmail.com BTRFS info (device loop1): relocating block group 5242880 flags data|metadata assertion failed: root->reloc_root == reloc_root, in fs/btrfs/relocation.c:1919 ------------[ cut here ]------------ kernel BUG at fs/btrfs/relocation.c:1919! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 12638 Comm: syz-executor311 Not tainted 6.5.0-rc3-syzkaller-00297-gd31e3792919e #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:prepare_to_merge+0x9cc/0xcd0 fs/btrfs/relocation.c:1919 Code: c5 e9 81 fd ff ff e8 e3 59 00 fe b9 7f 07 00 00 48 c7 c2 40 d9 b6 8a 48 c7 c6 20 e6 b6 8a 48 c7 c7 a0 da b6 8a e8 54 bc e3 fd <0f> 0b 4c 8b 7c 24 38 48 8b 5c 24 10 44 8b 6c 24 0c e8 ae 59 00 fe RSP: 0018:ffffc90023e176d0 EFLAGS: 00010282 RAX: 000000000000004f RBX: ffff88801e898560 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81698120 RDI: 0000000000000005 RBP: ffff88801e898558 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 6f69747265737361 R12: dffffc0000000000 R13: ffff88801e898000 R14: ffff88802d944000 R15: ffff888017616618 FS: 00007fb31aba26c0(0000) GS:ffff88806b600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb31ac3a758 CR3: 000000002e1dc000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: relocate_block_group+0x8d1/0xe70 fs/btrfs/relocation.c:3749 btrfs_relocate_block_group+0x714/0xd90 fs/btrfs/relocation.c:4087 btrfs_relocate_chunk+0x143/0x440 fs/btrfs/volumes.c:3283 __btrfs_balance fs/btrfs/volumes.c:4018 [inline] btrfs_balance+0x20fc/0x3ef0 fs/btrfs/volumes.c:4395 btrfs_ioctl_balance fs/btrfs/ioctl.c:3604 [inline] btrfs_ioctl+0x1362/0x5cf0 fs/btrfs/ioctl.c:4637 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fb31abe6e49 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 18 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb31aba2168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fb31ac73728 RCX: 00007fb31abe6e49 RDX: 00000000200003c0 RSI: 00000000c4009420 RDI: 0000000000000005 RBP: 00007fb31ac73720 R08: 00007fb31aba26c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb31ac7372c R13: 0000000000000006 R14: 00007ffe768d5660 R15: 00007ffe768d5748 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:prepare_to_merge+0x9cc/0xcd0 fs/btrfs/relocation.c:1919 Code: c5 e9 81 fd ff ff e8 e3 59 00 fe b9 7f 07 00 00 48 c7 c2 40 d9 b6 8a 48 c7 c6 20 e6 b6 8a 48 c7 c7 a0 da b6 8a e8 54 bc e3 fd <0f> 0b 4c 8b 7c 24 38 48 8b 5c 24 10 44 8b 6c 24 0c e8 ae 59 00 fe RSP: 0018:ffffc90023e176d0 EFLAGS: 00010282 RAX: 000000000000004f RBX: ffff88801e898560 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81698120 RDI: 0000000000000005 RBP: ffff88801e898558 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 6f69747265737361 R12: dffffc0000000000 R13: ffff88801e898000 R14: ffff88802d944000 R15: ffff888017616618 FS: 00007fb31aba26c0(0000) GS:ffff88806b600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb31ac3a758 CR3: 000000002e1dc000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing.