From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) (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 8A6C71F4C87 for ; Thu, 2 Oct 2025 16:31:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.198 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759422666; cv=none; b=bD+V6I+/DqAAUkAzJlCiwGH3Ru/Zgq6DopB2BMLb+mpgcxhTU6dounHlswzKUhNMZvvOy/NQ+WRChirwADjmq3tzfjDJgr0Qmcyd4FH3fv+v/jwG7hlgucDzhjaCf3i8HOzXO04+H+Mnw4eNFhyBGZ3xsd5HwibrU0rgXT6sKUc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759422666; c=relaxed/simple; bh=PP0pX6rgA5JGT8Vw9HCAJcKj0ABWCus8xUv3bZa5ZMA=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=YCwHYX5QR0up+Tj6jf7P1KiQvdluEEAJpd0WWSAQ/BpvprwkLrFupuknfhDPkjchOBtRZR8xiyxnuWxQfSCjsJde5KT6/12b+M5anZfa7s+q7yz1N6D1nEMwUWg8gB/J+hej1Efa/IdXR9cIqIr2PH/n8f/LudN7rxND/eEWvN0= 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=209.85.166.198 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-il1-f198.google.com with SMTP id e9e14a558f8ab-42d7e4abc61so17116665ab.3 for ; Thu, 02 Oct 2025 09:31:04 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1759422664; x=1760027464; 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=oeFKT/7Ey6/Kc9/J0NxZR/hdvfpXgq9fYy75uQai+mU=; b=f+I8cP6zfrpDWJrllKBePLrUNipvVnbIRpwbCSk//Mrk9OvHBh/6bK2yKi6UpdHjhf E6HII5TLrI/ZcwiobFoDlhJYH2+sbWeGr302+AVoK4UYbpv7txq4FXEBA0jh9rMKZhWL Ub1Iml27mwLm+usVg6Dud3dyzYZ7Irqplf3QCsfJWU6MTAJdKbew2N/mIQPjFrjH+0LW QxjFY88MUHPtcfedSWuKpn8DZy0FJ1ExSDhVoNXqYbBUYp6xX8QNlz+2ebjY18l3wnJF CUCAoMkM18//XjNHf/QamOfA2GwYBBW2AMoJEPCcPTBRDt7wQBc3cBK9/XMG0BgZKiIR kLvw== X-Forwarded-Encrypted: i=1; AJvYcCWdBS2HN3aNpxAdrtRO3s3hBLx6GF1co+ykBSrHaLeBz8RGAtPl28CCC2qdzburSSl7T426cW2swqsBZeOu@vger.kernel.org X-Gm-Message-State: AOJu0YyZnXQPiI2E9ybP4usVKuQ99QTImb3e1pgEO0K5RQcRqF4IKW3j zWb9OGT9RBZEslux/O8WuyaAc9dref/9u+DQKsyklUqArzf6YJP0UAuhswNk4Q2pnAPg24cKf0T ze1TXrXqVX0uVrg8cbhale8j0VqWtmubi2/EHhMjUZcjaajvJvl+6VPSlyv8= X-Google-Smtp-Source: AGHT+IHI++pJy1HWaqBmhmspp99OJkMFDvzWt6I2r0ornTdRwh7AR5uO9XcvAFB8BEIQRkW4CL7+tX5E8y3gBV0xMu276XqiO24t Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1c04:b0:42e:7ab6:ec89 with SMTP id e9e14a558f8ab-42e7adb4d1cmr1767025ab.32.1759422663701; Thu, 02 Oct 2025 09:31:03 -0700 (PDT) Date: Thu, 02 Oct 2025 09:31:03 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68dea8c7.050a0220.25d7ab.07ce.GAE@google.com> Subject: Re: [syzbot] [hfs?] kernel BUG in hfs_write_inode From: syzbot To: contact@gvernon.com, damien.lemoal@opensource.wdc.com, jlayton@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, willy@infradead.org Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: kernel BUG in hfs_write_inode ------------[ cut here ]------------ kernel BUG at fs/hfs/inode.c:444! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 1 UID: 0 PID: 1438 Comm: kworker/u8:9 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 Workqueue: writeback wb_workfn (flush-7:0) RIP: 0010:hfs_write_inode+0x7c8/0x7d0 fs/hfs/inode.c:444 Code: c1 40 c2 05 99 80 e1 07 80 c1 03 38 c1 0f 8c 7d fe ff ff 48 c7 c7 40 c2 05 99 e8 e3 dc 8c ff e9 6c fe ff ff e8 a9 96 2d ff 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000534f180 EFLAGS: 00010293 RAX: ffffffff8290d517 RBX: ffff8880323301c8 RCX: ffff88802787d940 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000534f310 R08: ffff88802787d940 R09: 0000000000000003 R10: 0000000000000100 R11: 0000000000000004 R12: dffffc0000000000 R13: 1ffff92000a69e34 R14: ffff888032330188 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881269bc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff2f4ecb000 CR3: 0000000036660000 CR4: 00000000003526f0 Call Trace: write_inode fs/fs-writeback.c:1525 [inline] __writeback_single_inode+0x6f1/0x1000 fs/fs-writeback.c:1745 writeback_sb_inodes+0x6b7/0xf60 fs/fs-writeback.c:1976 wb_writeback+0x43b/0xaf0 fs/fs-writeback.c:2156 wb_do_writeback fs/fs-writeback.c:2303 [inline] wb_workfn+0x40e/0xf00 fs/fs-writeback.c:2343 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x436/0x7d0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:hfs_write_inode+0x7c8/0x7d0 fs/hfs/inode.c:444 Code: c1 40 c2 05 99 80 e1 07 80 c1 03 38 c1 0f 8c 7d fe ff ff 48 c7 c7 40 c2 05 99 e8 e3 dc 8c ff e9 6c fe ff ff e8 a9 96 2d ff 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000534f180 EFLAGS: 00010293 RAX: ffffffff8290d517 RBX: ffff8880323301c8 RCX: ffff88802787d940 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000534f310 R08: ffff88802787d940 R09: 0000000000000003 R10: 0000000000000100 R11: 0000000000000004 R12: dffffc0000000000 R13: 1ffff92000a69e34 R14: ffff888032330188 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881269bc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff2f4ecb000 CR3: 0000000036660000 CR4: 00000000003526f0 Tested on: commit: e5f0a698 Linux 6.17 git tree: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git v6.17 console output: https://syzkaller.appspot.com/x/log.txt?x=13b28458580000 kernel config: https://syzkaller.appspot.com/x/.config?x=f5b21423ca3f0a96 dashboard link: https://syzkaller.appspot.com/bug?extid=97e301b4b82ae803d21b compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 Note: no patches were applied.