From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f77.google.com (mail-oo1-f77.google.com [209.85.161.77]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1E72E33A011 for ; Wed, 17 Dec 2025 08:29:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.77 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765960188; cv=none; b=T/CteAeN1CucBDqKf5DTVLPika1+cvkEEahz+DgjP/LIevgjK/pbWIk6DERNPN0k7J6HHwmWGdRSylg157A7CLlwvjbCrQ1JtZGsnV/flR7ZMR8Tli5kp2mMxmqItU6yXe6rgSGu4y5QHIob0yVLdM2h51b01ty2h97uXw9hwRY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765960188; c=relaxed/simple; bh=Yo2yfOheYd2QQCuW4V5KjVb+tCEqrKNsHTqv1ceZiv4=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=ZCA124DN6ZFxBQMFePcjw8t15wwWHq/ronwcusdixzusL/b5O/IN00oW2NziLtIB8E/z+/KxUDfTIi4N6r6YuJ781E3tQQSaOaCU5IiBeTxkeIvnk9tUyU4PA9s5jlIH2XU4Xs7Y71YDF/hjHKAYU0XlBRC2vbfV0holS/gSKWg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.161.77 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-oo1-f77.google.com with SMTP id 006d021491bc7-65b153371efso619187eaf.1 for ; Wed, 17 Dec 2025 00:29:45 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1765960184; x=1766564984; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=/5l5YWT+gFM36FSeuF8wxKsKPKWJgnH7Ud+WIs5w/08=; b=cmOYhJKL3prkELpLIxGWs8R9IvyqX3bMfSuMgXCtwUEG7/5obwhZA9pJyW4BALWtds 4C2uwWe6sv7NHieUrOZ3+8ChxEqOE0XKLTOXuIg/HWsAmPToEtr/d5WPGvVQcOX6BVU8 YTc6v7Z+qaenoUTYwssLl2QcawJd8Zh6eVSqvuRPNf/cf3c9jbTOi391NXwtLKkmv2jJ TmXBI5tq0gGfzEmsXu0IT34SWZ08oGcqkioWnKkp9pBsZ7ak1GodOazxbLnqPuZe3LFp /nA+j+KIsUqs+ha3xmo7oPz3YkcGoAh9vL0ALlb4k+Gz9vfDyO8rKjsNQVEOh/jeVG9I leOA== X-Forwarded-Encrypted: i=1; AJvYcCXP7xCuXEbJJ03Yc0QlJVEYspe4nDVJfKPp3W8LGO1L8XLsGovk5/tiKMPyYaYVXksv3dqjWxXiUAFca54=@vger.kernel.org X-Gm-Message-State: AOJu0YzlVh6lh/89bJzzDhwcyuoSLF9FqvjLzws7XKOUPZpd3S7zI7NM +KItSDvVqd4JVq3r+e2f4LDmv8If5bLcfv+zxBVw4mIDNI02gpUjCuuU6RTS0w0MlRhA/+JQTIw E6m9UHE3x6YeaY7eq634J9q2hnYPFw75j6soQdE/u/n7qLbSHNkQjdQGtZO4= X-Google-Smtp-Source: AGHT+IFoD0ISrA7KSLqLiNYOALRZmAMhP+LiFe14Bd1UQKPPqZ4OqzEzzDsHOXoN2O3n7fotlPzlDMSOAE559EBDrTCZbe0QhGb0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:d8d:b0:65b:8181:e18d with SMTP id 006d021491bc7-65b8181e33bmr1510457eaf.28.1765960184779; Wed, 17 Dec 2025 00:29:44 -0800 (PST) Date: Wed, 17 Dec 2025 00:29:44 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <694269f8.a70a0220.207337.0046.GAE@google.com> Subject: [syzbot] [btrfs?] WARNING in __btrfs_update_delayed_inode (3) From: syzbot To: clm@fb.com, dsterba@suse.com, josef@toxicpanda.com, linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 9551a26f17d9 Merge tag 'loongarch-6.19' of git://git.kerne.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=141f31b4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=f315601b98a91c0b dashboard link: https://syzkaller.appspot.com/bug?extid=d85308bac7187ac131d3 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/b23c812ec291/disk-9551a26f.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/8b0564ab1672/vmlinux-9551a26f.xz kernel image: https://storage.googleapis.com/syzbot-assets/b8aac5f6fcdb/bzImage-9551a26f.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d85308bac7187ac131d3@syzkaller.appspotmail.com ------------[ cut here ]------------ BTRFS: Transaction aborted (error -28) WARNING: fs/btrfs/delayed-inode.c:1039 at 0x0, CPU#1: syz.1.67/6479 Modules linked in: CPU: 1 UID: 0 PID: 6479 Comm: syz.1.67 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:__btrfs_update_delayed_inode+0xcc6/0xed0 fs/btrfs/delayed-inode.c:1039 Code: d1 e1 fd e9 22 01 00 00 e8 57 aa c7 fd 84 c0 74 23 e8 8e d1 e1 fd e9 0f 01 00 00 e8 84 d1 e1 fd 48 8d 3d 5d 2d 05 0b 44 89 ee <67> 48 0f b9 3a e9 2c 01 00 00 e8 3b 97 f4 06 89 c3 31 ff 89 c6 e8 RSP: 0018:ffffc9000daf7080 EFLAGS: 00010283 RAX: ffffffff83dea0bc RBX: 00000000ffffffe4 RCX: 0000000000080000 RDX: ffffc9000d259000 RSI: 00000000ffffffe4 RDI: ffffffff8ee3ce20 RBP: ffffc9000daf7190 R08: ffff888028a01e40 R09: 0000000000000003 R10: 0000000000000100 R11: 00000000fffffffb R12: ffff88805e9ad9b0 R13: 00000000ffffffe4 R14: ffff88803dd5d580 R15: 0000000000000000 FS: 00007f393a8ee6c0(0000) GS:ffff888126e06000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f87afed8000 CR3: 000000003a514000 CR4: 00000000003526f0 Call Trace: btrfs_update_delayed_inode fs/btrfs/delayed-inode.c:1115 [inline] __btrfs_commit_inode_delayed_items+0x1cfc/0x1e70 fs/btrfs/delayed-inode.c:1138 __btrfs_run_delayed_items+0x215/0x540 fs/btrfs/delayed-inode.c:1173 btrfs_commit_transaction+0x8cb/0x3b10 fs/btrfs/transaction.c:2343 prepare_to_relocate+0x3a1/0x490 fs/btrfs/relocation.c:3479 relocate_block_group+0x132/0xd70 fs/btrfs/relocation.c:3504 btrfs_relocate_block_group+0x580/0xba0 fs/btrfs/relocation.c:3966 btrfs_relocate_chunk+0x12f/0x5d0 fs/btrfs/volumes.c:3424 __btrfs_balance+0x190e/0x24f0 fs/btrfs/volumes.c:4197 btrfs_balance+0xac2/0x11b0 fs/btrfs/volumes.c:4571 btrfs_ioctl_balance+0x3d6/0x610 fs/btrfs/ioctl.c:3525 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xff/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f393c68f749 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f393a8ee038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f393c8e5fa0 RCX: 00007f393c68f749 RDX: 0000200000000180 RSI: 00000000c4009420 RDI: 0000000000000004 RBP: 00007f393c713f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f393c8e6038 R14: 00007f393c8e5fa0 R15: 00007ffd84049f78 ---------------- Code disassembly (best guess): 0: d1 e1 shl %ecx 2: fd std 3: e9 22 01 00 00 jmp 0x12a 8: e8 57 aa c7 fd call 0xfdc7aa64 d: 84 c0 test %al,%al f: 74 23 je 0x34 11: e8 8e d1 e1 fd call 0xfde1d1a4 16: e9 0f 01 00 00 jmp 0x12a 1b: e8 84 d1 e1 fd call 0xfde1d1a4 20: 48 8d 3d 5d 2d 05 0b lea 0xb052d5d(%rip),%rdi # 0xb052d84 27: 44 89 ee mov %r13d,%esi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: e9 2c 01 00 00 jmp 0x160 34: e8 3b 97 f4 06 call 0x6f49774 39: 89 c3 mov %eax,%ebx 3b: 31 ff xor %edi,%edi 3d: 89 c6 mov %eax,%esi 3f: e8 .byte 0xe8 --- 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 report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup