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I am not sure if I have seen it before, possibly yes.
Bluetooth: Core ver 2.11
NET: Registered protocol family 31
Bluetooth: HCI device and connection manager initialized
Bluetooth: HCI socket layer initialized
Bluetooth: L2CAP ver 2.8
Bluetooth: L2CAP socket layer initialized
Bluetooth: RFCOMM socket layer initialized
Bluetooth: RFCOMM TTY layer initialized
Bluetooth: RFCOMM ver 1.8
Bluetooth: L2CAP ver 2.8
Bluetooth: L2CAP socket layer initialized
Bluetooth: RFCOMM socket layer initialized
Bluetooth: RFCOMM TTY layer initialized
Bluetooth: RFCOMM ver 1.8
usb 1-1: new full speed USB device using ohci_hcd and address 2
usb 1-1: configuration #1 chosen from 1 choice
Bluetooth: HCI USB driver ver 2.9
usbcore: registered new interface driver hci_usb
=============================================
[ INFO: possible recursive locking detected ]
2.6.20-rc6-1avb #12
- ---------------------------------------------
kio_obex/8530 is trying to acquire lock:
(sk_lock-AF_BLUETOOTH){--..}, at: [<dfed181f>] l2cap_sock_bind+0x3f/0xe0
[l2cap]
but task is already holding lock:
(sk_lock-AF_BLUETOOTH){--..}, at: [<dfef7035>] rfcomm_sock_connect+0x45/0xd0
[rfcomm]
other info that might help us debug this:
2 locks held by kio_obex/8530:
#0: (sk_lock-AF_BLUETOOTH){--..}, at: [<dfef7035>]
rfcomm_sock_connect+0x45/0xd0 [rfcomm]
#1: (rfcomm_mutex){--..}, at: [<c02a2fc1>] mutex_lock+0x21/0x30
stack backtrace:
[<c0103fea>] show_trace_log_lvl+0x1a/0x30
[<c01045f2>] show_trace+0x12/0x20
[<c01046a6>] dump_stack+0x16/0x20
[<c0134585>] __lock_acquire+0xad5/0xdb0
[<c01348b7>] lock_acquire+0x57/0x70
[<c0237d48>] lock_sock_nested+0xe8/0x100
[<dfed181f>] l2cap_sock_bind+0x3f/0xe0 [l2cap]
[<dfef489f>] rfcomm_dlc_open+0xaf/0x220 [rfcomm]
[<dfef7099>] rfcomm_sock_connect+0xa9/0xd0 [rfcomm]
[<c023685d>] sys_connect+0x5d/0x90
[<c0236fbd>] sys_socketcall+0xbd/0x280
[<c010300e>] sysenter_past_esp+0x5f/0x99
=======================
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