From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f80.google.com (mail-oo1-f80.google.com [209.85.161.80]) (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 18E5226B742 for ; Mon, 19 Jan 2026 08:22:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.80 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768810947; cv=none; b=Q8IXi+gKHQVsGc0QaYFy75z3SEmVyrxhXqKJ6+ahbHSTVwgVC/BDmfQ6mZTOHEjEV3zjDZSTRppXA3ygakOcUMw7D2LCScDQxnjg7Vc1Y0o6/ymKiy5PSI56O2gGIY5YPl8z4SbR9wM1Bd6QcdejLIjmDegp22I2G4fAWNTBNhI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768810947; c=relaxed/simple; bh=cDB9uZ2SYfUFsV68Gf1FYZDiNkcCykxl4PlpZjrZGDI=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=n0HmROOKVxsG9MPS1aQom0g/ZKVsXAlmSpI4OHPyeC35Ey3uzmSbrr7NJ6saUzmCB7BP7biTJzUcfmJFJNfAtcQgGMYvqq8gHlkHkZZQNOHof/riTdzAFySO94wm47B6YhHGoyWTUdiBdbES39kRakiDPl5Hl1hRnMPukyay3bU= 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=209.85.161.80 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-f80.google.com with SMTP id 006d021491bc7-661024254c8so11122733eaf.2 for ; Mon, 19 Jan 2026 00:22:25 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1768810945; x=1769415745; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=GAJI0hYlY/s3CHL17rQ+cSnoF1kmTxJ58X5ejSkr/sQ=; b=j6TCJYRDRpMsviSJs4GNIEg/2iCR2uOQCpARnxIBUeAAZKiRoHugcPgnPzqjNkm0ab p0sgMgIqb6JDfTJ73Q28kVSPJBVHXJbS9AqrJrFV+k7ElJhrwCpOzsZes1FDrzNSHxOx oLxmOTZbFbjhcTOvVBQCbxHmYrxkvR5uhp67NnANY6gNQ1IVqciX+yAiNxM68nqF7gTI CjBrTmLszBzA0F/9ldqfVIF5YceyK+Oxyoti6An2Szl27HTF/ir73wsrADBUTdB+MU1I Ue6ZLshdBNZRG1xdh6SEHshBKgmqxUS4Njid27XXBYeKVMN8zeRIsG+3TNFa48oJ/ElC /GCQ== X-Forwarded-Encrypted: i=1; AJvYcCUxg/Gjv507AcD0KPgZYm/lamHDlox6qS3xoKbG8tXv5bBXQ2yspEWSPg8hQ515+V3MhG3SWMlhsCB5LGA=@vger.kernel.org X-Gm-Message-State: AOJu0YwaNNUqCFwwk3Us/uJjjjqkQzVJdr3a9niqK228euQFKTnxwbay EcxSF0Gp4kitgeYn9eNHWADzOxUe+6S7SxfIgqxH9EOhVi2MVR7IjK9EZihL9xK4LpQnkd5XPeP H/eEk545RI8dheQy5xDvZrTtonNsH/k+n5zsdkbpQkjxePzH0hMAHivo2BpY= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:81d1:b0:65f:6d6c:530e with SMTP id 006d021491bc7-661189c3857mr4741763eaf.72.1768810945155; Mon, 19 Jan 2026 00:22:25 -0800 (PST) Date: Mon, 19 Jan 2026 00:22:25 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <696de9c1.050a0220.3390f1.0040.GAE@google.com> Subject: [syzbot] [hfs?] WARNING: ODEBUG bug in hfsplus_fill_super (4) From: syzbot To: frank.li@vivo.com, glaubitz@physik.fu-berlin.de, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, slava@dubeyko.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 0f853ca2a798 Add linux-next specific files for 20260113 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=15f4f99a580000 kernel config: https://syzkaller.appspot.com/x/.config?x=8d6e5303d96e21b5 dashboard link: https://syzkaller.appspot.com/bug?extid=4d36862d0682266c49bf 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/480cd223f3f6/disk-0f853ca2.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/1ca2f0dbb7cc/vmlinux-0f853ca2.xz kernel image: https://storage.googleapis.com/syzbot-assets/60a0fef5805b/bzImage-0f853ca2.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+4d36862d0682266c49bf@syzkaller.appspotmail.com ------------[ cut here ]------------ ODEBUG: free active (active state 0) object: ffff88803b48ea38 object type: timer_list hint: delayed_sync_fs+0x0/0xf0 fs/hfsplus/super.c:-1 WARNING: lib/debugobjects.c:615 at debug_print_object lib/debugobjects.c:612 [inline], CPU#1: syz.5.8803/4349 WARNING: lib/debugobjects.c:615 at __debug_check_no_obj_freed lib/debugobjects.c:1099 [inline], CPU#1: syz.5.8803/4349 WARNING: lib/debugobjects.c:615 at debug_check_no_obj_freed+0x405/0x550 lib/debugobjects.c:1129, CPU#1: syz.5.8803/4349 Modules linked in: CPU: 1 UID: 0 PID: 4349 Comm: syz.5.8803 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:debug_print_object lib/debugobjects.c:612 [inline] RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:1099 [inline] RIP: 0010:debug_check_no_obj_freed+0x44a/0x550 lib/debugobjects.c:1129 Code: 89 44 24 20 e8 47 c1 8d fd 48 8b 44 24 20 4c 8b 4d 00 4c 89 ef 48 c7 c6 a0 a3 e0 8b 48 c7 c2 c0 a8 e0 8b 8b 0c 24 4d 89 f8 50 <67> 48 0f b9 3a 48 83 c4 08 4c 8b 6c 24 18 48 b9 00 00 00 00 00 fc RSP: 0018:ffffc9000af5f6b0 EFLAGS: 00010246 RAX: ffffffff829ebf60 RBX: ffffffff99d50010 RCX: 0000000000000000 RDX: ffffffff8be0a8c0 RSI: ffffffff8be0a3a0 RDI: ffffffff8fad4670 RBP: ffffffff8b8d30a0 R08: ffff88803b48ea38 R09: ffffffff8b8d4200 R10: dffffc0000000000 R11: ffffffff81ae2f10 R12: ffff88803b48ec00 R13: ffffffff8fad4670 R14: ffff88803b48e000 R15: ffff88803b48ea38 FS: 00007f64cf5f06c0(0000) GS:ffff888125cf7000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f518962949d CR3: 0000000051490000 CR4: 00000000003526f0 Call Trace: slab_free_hook mm/slub.c:2487 [inline] slab_free mm/slub.c:6690 [inline] kfree+0x13b/0x660 mm/slub.c:6898 hfsplus_fill_super+0xecc/0x1930 fs/hfsplus/super.c:653 get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1691 vfs_get_tree+0x92/0x2a0 fs/super.c:1751 fc_mount fs/namespace.c:1204 [inline] do_new_mount_fc fs/namespace.c:3763 [inline] do_new_mount+0x31a/0xcf0 fs/namespace.c:3839 do_mount fs/namespace.c:4162 [inline] __do_sys_mount fs/namespace.c:4351 [inline] __se_sys_mount+0x313/0x410 fs/namespace.c:4328 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f64ce790eea Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f64cf5efe68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f64cf5efef0 RCX: 00007f64ce790eea RDX: 0000200000000100 RSI: 0000200000002900 RDI: 00007f64cf5efeb0 RBP: 0000200000000100 R08: 00007f64cf5efef0 R09: 0000000002000010 R10: 0000000002000010 R11: 0000000000000246 R12: 0000200000002900 R13: 00007f64cf5efeb0 R14: 00000000000006d8 R15: 00002000000022c0 ---------------- Code disassembly (best guess): 0: 89 44 24 20 mov %eax,0x20(%rsp) 4: e8 47 c1 8d fd call 0xfd8dc150 9: 48 8b 44 24 20 mov 0x20(%rsp),%rax e: 4c 8b 4d 00 mov 0x0(%rbp),%r9 12: 4c 89 ef mov %r13,%rdi 15: 48 c7 c6 a0 a3 e0 8b mov $0xffffffff8be0a3a0,%rsi 1c: 48 c7 c2 c0 a8 e0 8b mov $0xffffffff8be0a8c0,%rdx 23: 8b 0c 24 mov (%rsp),%ecx 26: 4d 89 f8 mov %r15,%r8 29: 50 push %rax * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 48 83 c4 08 add $0x8,%rsp 33: 4c 8b 6c 24 18 mov 0x18(%rsp),%r13 38: 48 rex.W 39: b9 00 00 00 00 mov $0x0,%ecx 3e: 00 fc add %bh,%ah --- 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