From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f208.google.com (mail-oi1-f208.google.com [209.85.167.208]) (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 79B49175A91 for ; Wed, 12 Aug 2026 00:12:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.208 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786493555; cv=none; b=PT6z2OcR73+4qFFshtc3jJr11dX9zgn/MEp8XQ2Dtem9ax+ebZdcrjTBBToK6cOQlJCZICeKxyGUudR7ohDoivYi94UNj6Lkt4uGKOOIXchqkEthwmJPxrKzCgGCTZWnaQomaK4P8RKGngwIOcXNM37WxyqyPvr2nFB7+3bqRS0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786493555; c=relaxed/simple; bh=ubo+/Gaw9JwQBmjqOMiVQ1soIHjzt5XaVwlHOjihHDQ=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=PJsXf/ZluP5A7wm1FRUl1lXadt1uxSKFFxeM81vnC6Ou9OF6Uf+ILH4v/852SmzGYOXRXgUScwfOIlbczC1zr+FuK97P2RUzgLscn2f/B+ByqJIu8ZQzpJWn2n0gKgWyD74bhnOmT2oSFLSs82t7ySm+p6nYgll8hTkxCDJO9gc= 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=209.85.167.208 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-oi1-f208.google.com with SMTP id 5614622812f47-49d4cb3ca23so572913b6e.3 for ; Tue, 11 Aug 2026 17:12:31 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786493550; x=1787098350; h=content-type:to:from:subject:message-id:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=GaZJnBJ9c00c6qKiRZD2tbC7KQvTO8pZobLhqlvkl1Q=; b=CYZqBF2LyaNFUofFrMiQpe02vzNfrRR1l2KHWp1tpn+riy4DZ0LTCa0dr9fkCKtiGJ CWHU/t1cNCuvC0QJidK5HEGl9lwBmRIz7BmirRCQa83E/8HnYvnTsFeXtT28pwslALoN 92sRhksKUHLbRs1wLxGU2vnAvtcP/upgrJ4r/NINtWg6zuRUQiknSNzCjeKsEhiGfFU7 mDINapa50yk/IFeCRAzajJPoPTxm0xte3vOEher654GeCKirFlnvCf7I4D/0jE9PhFSf YvYJb+VehoQGk62H2/44tMJSgYw8uuOek4JoAsvRIcrOTqvYqsehb+tmvio1tzy7D2w8 D0jA== X-Forwarded-Encrypted: i=1; AHgh+Rof3ocJDLVw2rXygI8r1x2r2y3/7pAi7xAbXe4lELUgNMNgWE1njlwFpiYYRtrXf6cnw1HfJbnXGLDZ/kk=@vger.kernel.org X-Gm-Message-State: AOJu0YzKApwi9xiwNxwBmMPhm/CPscnP7AO1X+SX2LvBTiW+Me0eU5fa 5jXrgkt2FkHeRXh2A4Nn4vfkX8BDE1fCYVsZIjIJqOsR2ldbiiU9C4SUs0eF0tm3Jc9b4z8TS3O By9Ydn9QRsPyL0s0csXlAsWJdrnAwzba6GTa1zqv5PXyIq8odVIKHAOh8SRc= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:138e:b0:4b1:b83a:5888 with SMTP id 5614622812f47-4b210bcbf1cmr1041178b6e.14.1786493550378; Tue, 11 Aug 2026 17:12:30 -0700 (PDT) Date: Tue, 11 Aug 2026 17:12:30 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a7bba6e.c5ad36c8.12f49d.0024.GAE@google.com> Subject: [syzbot] [btrfs?] WARNING in __btrfs_run_delayed_items (3) From: syzbot To: clm@fb.com, dsterba@suse.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: f9a2394a2348 Merge tag 'mm-hotfixes-stable-2026-08-06-18-4.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=150fbe49580000 kernel config: https://syzkaller.appspot.com/x/.config?x=dd7fa9e412f91f87 dashboard link: https://syzkaller.appspot.com/bug?extid=32e33c1af28c9b98ac7d compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-f9a2394a.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/44414e53d5ba/vmlinux-f9a2394a.xz kernel image: https://storage.googleapis.com/syzbot-assets/a70c6743385f/bzImage-f9a2394a.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+32e33c1af28c9b98ac7d@syzkaller.appspotmail.com ------------[ cut here ]------------ btrfs_abort_should_print_stack(__error) WARNING: fs/btrfs/delayed-inode.c:1161 at __btrfs_run_delayed_items+0x3dd/0x420 fs/btrfs/delayed-inode.c:1161, CPU#0: kworker/u4:0/12 Modules linked in: CPU: 0 UID: 0 PID: 12 Comm: kworker/u4:0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Workqueue: events_unbound btrfs_async_reclaim_metadata_space RIP: 0010:__btrfs_run_delayed_items+0x3dd/0x420 fs/btrfs/delayed-inode.c:1161 Code: c1 38 c1 0f 8c be fc ff ff 4c 89 ff e8 9c 14 0c fe e9 b1 fc ff ff e8 c2 e0 9c fd eb 10 e8 bb e0 9c fd eb 09 e8 b4 e0 9c fd 90 <0f> 0b 90 44 89 e1 f7 d9 e9 41 ff ff ff e8 a1 e0 9c fd 48 c7 c7 60 RSP: 0018:ffffc9000025f7b0 EFLAGS: 00010293 RAX: ffffffff842a322c RBX: ffff8880443bd580 RCX: ffff88801cedca80 RDX: 0000000000000000 RSI: ffffffff8f1e9f80 RDI: 00000000ffffffe4 RBP: 0000000000000001 R08: ffff88801cedca80 R09: 0000000000000003 R10: 00000000fffffffb R11: 0000000000000000 R12: 00000000ffffffe4 R13: ffff8880441375a0 R14: ffff888050fd0000 R15: 1ffff11008877ab0 FS: 0000000000000000(0000) GS:ffff88808c54a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f22f3b039a0 CR3: 000000003f106000 CR4: 0000000000352ef0 Call Trace: flush_space+0x5fd/0xde0 fs/btrfs/space-info.c:875 do_async_reclaim_metadata_space+0x3e8/0x940 fs/btrfs/space-info.c:1211 btrfs_async_reclaim_metadata_space+0x89/0xe0 fs/btrfs/space-info.c:1278 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 --- 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