From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f71.google.com (mail-oo1-f71.google.com [209.85.161.71]) (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 64E0137E2F6 for ; Sat, 18 Apr 2026 14:06:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.71 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776521164; cv=none; b=ijZ+TQLblGWTIqwFyX3XajrDSMGPm1mrqd6CXl3OjVjZMWe+GZtfMqU+t3Nd7tyjClQB0JBJt69amfaUpFlMwvLptmUHgWLwOe8AinZTG7VIoAgiSMFkVAzg1NM+Bz5FJH7/D5iwp/Ffk1jazdJlxaJQbZslhJxIT6abHouPk9c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776521164; c=relaxed/simple; bh=RI4RLn9VNFU7iWf/viRk/bTE6MFtvDgR69Fhwub60QI=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=dzyJGFw/Lc6FFI60SkgCwu7OmXF3nAT5Xxgacq3tfXLa9W5wbVSAvdW5woQ/hXR2drReuuV2JRm7qXadgnOzh9Y8d75qmQNzmqsF4gZo2uS6ZRyboCrmsRXkseDltPp99gvmASJchLvGyPhnISrO1syqNbDy7AXFsiVhcF0F83c= 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=209.85.161.71 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-f71.google.com with SMTP id 006d021491bc7-68b313c42e7so1684409eaf.2 for ; Sat, 18 Apr 2026 07:06:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1776521162; x=1777125962; 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=UetsmH9tTSyapyUSEHWXpOJfdiMMKY4U7Co/7qe7wJA=; b=FFVSP6j3IfnQ9etu1dioKPOVB6Duw6ptn4iTTCcVgI8LXJNzYwpAl+0/m5MyUc+hjR +koJRklMq/Bmi0A4RIyt0BkWDJz0b9Yd3PUej0HxkKuXxPasTGHNwHCQjDW3uNXuWQ1E 99fgmuFycI9Vx15veiAM8c67PZfMm6QPippP2iACoXeyGlhBScDojyeO8v5UNv9jRb8L a9Qhw8UtBPnLZhaqBPoJFIyelfB9XxTmjbzOkouD1cQdR7eGx+9J6yQ/nxu54k3i1b8+ FeNJIwJu+omEQ8cKde+1NlIlnH/e1/2pELZ3B/dsPtwSdUYNlI7tPAwaKH8gN58FNa7J 0JZQ== X-Gm-Message-State: AOJu0YwuxsMvyQbe+L421Zsj2c2LIMdfEhV4YfRptGQLSJJKevafwrXs bW1P8ImbG0Bm9pQQtMxfwamoAMiAW47IY3fck9fK8duv+b05G0k6eO4/ODTF78AX+Q6MXX3p1jR 7L6zX5NAVdD9+r3AFom6OpAmO/ciB45ZJyUCRTP1HApgm83k1ByWSI++3jAw= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:906:b0:692:5620:aba1 with SMTP id 006d021491bc7-69462f294d6mr3971558eaf.48.1776521162418; Sat, 18 Apr 2026 07:06:02 -0700 (PDT) Date: Sat, 18 Apr 2026 07:06:02 -0700 In-Reply-To: <177651956821.1704049.15959811995264711556@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69e38fca.050a0220.24bfd3.000d.GAE@google.com> Subject: Re: [syzbot] [hfs?] WARNING in hfs_bnode_create From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, tristmd@gmail.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: WARNING in hfs_bnode_create hfs: new node 0 already hashed? ------------[ cut here ]------------ 1 WARNING: fs/hfs/bnode.c:478 at hfs_bnode_create+0x45d/0x4f0 fs/hfs/bnode.c:478, CPU#0: kworker/u8:11/1900 Modules linked in: CPU: 0 UID: 0 PID: 1900 Comm: kworker/u8:11 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Workqueue: writeback wb_workfn (flush-7:0) RIP: 0010:hfs_bnode_create+0x45d/0x4f0 fs/hfs/bnode.c:478 Code: 67 8b 89 ee e8 84 37 82 fe e9 cf fc ff ff e8 9a 64 1f ff 4c 89 f7 e8 02 92 87 08 48 c7 c7 60 86 67 8b 89 ee e8 64 37 82 fe 90 <0f> 0b 90 49 c7 c5 ef ff ff ff eb a9 44 89 f9 80 e1 07 80 c1 03 38 RSP: 0018:ffffc90007216c60 EFLAGS: 00010246 RAX: 000000000000001f RBX: dffffc0000000000 RCX: fc54bb1d45c9e500 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffff52000e42d3d R12: 0000000000000000 R13: ffff88802c352000 R14: ffff88802c3520d0 R15: ffff88802a51b200 FS: 0000000000000000(0000) GS:ffff88812610b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffccb6b3f30 CR3: 000000002c30c000 CR4: 00000000003526f0 Call Trace: hfs_bmap_alloc+0x6a0/0xa50 fs/hfs/btree.c:332 hfs_btree_inc_height+0x100/0xad0 fs/hfs/brec.c:490 hfs_brec_insert+0x7ef/0xc90 fs/hfs/brec.c:148 __hfs_ext_write_extent+0x2a1/0x470 fs/hfs/extent.c:124 hfs_ext_write_extent+0x17e/0x210 fs/hfs/extent.c:144 hfs_write_inode+0x117/0x960 fs/hfs/inode.c:459 write_inode fs/fs-writeback.c:1582 [inline] __writeback_single_inode+0x75d/0x10e0 fs/fs-writeback.c:1825 writeback_sb_inodes+0x97f/0x1980 fs/fs-writeback.c:2054 wb_writeback+0x445/0xb00 fs/fs-writeback.c:2239 wb_do_writeback fs/fs-writeback.c:2386 [inline] wb_workfn+0x3fd/0xf20 fs/fs-writeback.c:2426 process_one_work kernel/workqueue.c:3302 [inline] process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3385 worker_thread+0xa53/0xfc0 kernel/workqueue.c:3466 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 Tested on: commit: 8541d8f7 Merge tag 'mtd/for-7.1' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12a8466a580000 kernel config: https://syzkaller.appspot.com/x/.config?x=515dd79402eb93db dashboard link: https://syzkaller.appspot.com/bug?extid=a19ca73b21fe8bc69101 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 patch: https://syzkaller.appspot.com/x/patch.diff?x=11bec1ba580000