From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f208.google.com (mail-il1-f208.google.com [209.85.166.208]) (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 85495C13D for ; Sun, 20 Jul 2025 03:58:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.208 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752983913; cv=none; b=UnAY5ckl9/TkXY6NPPlVtiXaJfbnVbkpRtiPTbUk3GKZN0Ky8lQznoBlRdp4uN0FD7PysyKZf7WQ4pkQ5jLfnQfhZ6imMo4Mp0na3yzxYXx4A+Z6MIZITXS2dd5v4bm8rzjLG1w1QTeqxE2RiS6/XyZSDSzNNoAk4Cr/m15Jo1M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752983913; c=relaxed/simple; bh=zGlIAF72GsmmqUagODzql493q6S6/9XTSnYhNRZd1yM=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=ZYSUJjKHcrzB/xXHPiw0ZKznHL93PU8thfY89ptWNMeIe2l5KtGtAg8rxb1E1Z3h0aUaE8IeDtmmJfiZl0IHHOWtdpFg4z2atSkek64TslZSRJbxXRgbx68pOfT8Ugx/USODDSDtDQuGZ4ebvS8yhPccnpBrWdUzXLTT2y2n43I= 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=209.85.166.208 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-il1-f208.google.com with SMTP id e9e14a558f8ab-3ddd03db21cso56488015ab.1 for ; Sat, 19 Jul 2025 20:58:31 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1752983911; x=1753588711; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=nsB/sJ4gSr2fJI4/dFbAf1S8MuXj/JkzbDKyQagJ6mM=; b=p3Dz7Q9ChP2eVXaS9F6GMNypI/gf5WfqMm8alIEzJ7bJyqLT1XyKsVOG5ADFSFNKSX IAj8KfBEio+OQB47D0fIwpRfz0r7wXctRYRHiebeFxMEgHFAZkYyUWZFGoQaTJRaQlOg 3UjonvGUOiacBzhjBLad6BJXbMQpkRZ+yP3uPpgVEx6+49lK3Nio8Uo2XiqdgCVpmLml pzf3zgbxHPxECcZpYRaFWv78RFcG1fxTu6/96ge9GFfEoUzW6EHp4P7P4mgbCYOR0VW3 krZ7orvU+q32//KCKDo5b8cSehOLoZU93wf1TWGM/xsHKYZ1sTFRFuwGLG0ctnonuuNX xl0g== X-Forwarded-Encrypted: i=1; AJvYcCWa/dz0u3h/PMUXuL+qOKivkEyEY6h8QDimmx1EcnICajeMCdjon3JiIjlq6HX+AXIfLPEIwBxGyW7N7k0QEHQ=@vger.kernel.org X-Gm-Message-State: AOJu0Ywbn56uO6StTwEzdR4T+QZgocZEGxhVg/d9YCVmD3+xTKqdEZQW MmrZvXM8jw5DzgTEjWzar0oBj38OMTrJF7RgePvGatUw3ES8viZKhb7HoH8aH7VSUZ8FAuUiREG hgj6+nLQ7/iLxRX15YNr5a+ZTeZ5VP+hk8iEIH4x45KPGhkl+RR0qRoFNWMk= X-Google-Smtp-Source: AGHT+IFGAFiMw9YIVJMIiBQBD//oXG8QJzQ09OC3S1b/UVKd8I6+E/40rK60gAOedDi0tfy1r9r765N6lPuGYzNnSBk2MXhaUKT3 Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:178c:b0:3e2:9b51:bfc5 with SMTP id e9e14a558f8ab-3e29b51cf0bmr54362225ab.14.1752983910730; Sat, 19 Jul 2025 20:58:30 -0700 (PDT) Date: Sat, 19 Jul 2025 20:58:30 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <687c6966.a70a0220.693ce.00a5.GAE@google.com> Subject: [syzbot] [bluetooth] stack segment fault in kernfs_rename_ns From: syzbot To: gregkh@linuxfoundation.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, luiz.dentz@gmail.com, marcel@holtmann.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, tj@kernel.org Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: b9fd9888a565 bnxt_en: eliminate the compile warning in bnx.. git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=118ce582580000 kernel config: https://syzkaller.appspot.com/x/.config?x=b29b1a0d7330d4a8 dashboard link: https://syzkaller.appspot.com/bug?extid=d1db96f72a452dc9cbd2 compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/01ea776e1c9e/disk-b9fd9888.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/bba0c9444631/vmlinux-b9fd9888.xz kernel image: https://storage.googleapis.com/syzbot-assets/810cd37cc085/bzImage-b9fd9888.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d1db96f72a452dc9cbd2@syzkaller.appspotmail.com Oops: stack segment: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 6246 Comm: syz.3.81 Not tainted 6.16.0-rc4-syzkaller-00109-gb9fd9888a565 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:kernfs_rename_ns+0x3a/0x7a0 fs/kernfs/dir.c:1747 Code: ec 48 48 89 cb 48 89 54 24 10 49 89 f5 49 89 fe 49 bc 00 00 00 00 00 fc ff df e8 d1 5b 62 ff 4d 8d 7e 30 4c 89 fd 48 c1 ed 03 <42> 80 7c 25 00 00 74 08 4c 89 ff e8 86 de c5 ff 49 83 3f 00 0f 84 RSP: 0018:ffffc90003ecf9c0 EFLAGS: 00010206 RAX: ffffffff825e02cf RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc9000cbbb000 RSI: 0000000000000873 RDI: 0000000000000874 RBP: 0000000000000006 R08: ffff88801c7e9e00 R09: 0000000000000008 R10: 0000000000000007 R11: 0000000000000002 R12: dffffc0000000000 R13: ffff888143acf960 R14: 0000000000000000 R15: 0000000000000030 FS: 00007fb14932a6c0(0000) GS:ffff888125c1d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000009e000 CR3: 000000007d24a000 CR4: 00000000003526f0 Call Trace: kobject_move+0x3a5/0x4f0 lib/kobject.c:569 device_move+0xe0/0x700 drivers/base/core.c:4609 hci_conn_del_sysfs+0xb8/0x170 net/bluetooth/hci_sysfs.c:75 hci_conn_cleanup net/bluetooth/hci_conn.c:175 [inline] hci_conn_del+0x8ff/0xcb0 net/bluetooth/hci_conn.c:1173 hci_conn_hash_flush+0x191/0x230 net/bluetooth/hci_conn.c:2561 hci_dev_do_reset net/bluetooth/hci_core.c:566 [inline] hci_dev_reset+0x44b/0x6b0 net/bluetooth/hci_core.c:610 sock_do_ioctl+0xd9/0x300 net/socket.c:1190 sock_ioctl+0x576/0x790 net/socket.c:1311 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb14858e929 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:00007fb14932a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fb1487b5fa0 RCX: 00007fb14858e929 RDX: 0000000000000000 RSI: 00000000400448cb RDI: 0000000000000006 RBP: 00007fb148610b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb1487b5fa0 R15: 00007ffd3f5b1588 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:kernfs_rename_ns+0x3a/0x7a0 fs/kernfs/dir.c:1747 Code: ec 48 48 89 cb 48 89 54 24 10 49 89 f5 49 89 fe 49 bc 00 00 00 00 00 fc ff df e8 d1 5b 62 ff 4d 8d 7e 30 4c 89 fd 48 c1 ed 03 <42> 80 7c 25 00 00 74 08 4c 89 ff e8 86 de c5 ff 49 83 3f 00 0f 84 RSP: 0018:ffffc90003ecf9c0 EFLAGS: 00010206 RAX: ffffffff825e02cf RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc9000cbbb000 RSI: 0000000000000873 RDI: 0000000000000874 RBP: 0000000000000006 R08: ffff88801c7e9e00 R09: 0000000000000008 R10: 0000000000000007 R11: 0000000000000002 R12: dffffc0000000000 R13: ffff888143acf960 R14: 0000000000000000 R15: 0000000000000030 FS: 00007fb14932a6c0(0000) GS:ffff888125c1d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000002a0fb8 CR3: 000000007d24a000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: ec in (%dx),%al 1: 48 rex.W 2: 48 89 cb mov %rcx,%rbx 5: 48 89 54 24 10 mov %rdx,0x10(%rsp) a: 49 89 f5 mov %rsi,%r13 d: 49 89 fe mov %rdi,%r14 10: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12 17: fc ff df 1a: e8 d1 5b 62 ff call 0xff625bf0 1f: 4d 8d 7e 30 lea 0x30(%r14),%r15 23: 4c 89 fd mov %r15,%rbp 26: 48 c1 ed 03 shr $0x3,%rbp * 2a: 42 80 7c 25 00 00 cmpb $0x0,0x0(%rbp,%r12,1) <-- trapping instruction 30: 74 08 je 0x3a 32: 4c 89 ff mov %r15,%rdi 35: e8 86 de c5 ff call 0xffc5dec0 3a: 49 83 3f 00 cmpq $0x0,(%r15) 3e: 0f .byte 0xf 3f: 84 .byte 0x84 --- 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