From: Kevin Baradon <kevin.baradon@gmail.com>
To: bluez-devel@lists.sourceforge.net
Subject: [Bluez-devel] Lockdep: possible recursive locking detected in hidd
Date: Tue, 18 Jul 2006 19:21:52 +0200 [thread overview]
Message-ID: <200607181921.52647.Kevin.Baradon@gmail.com> (raw)
[Please CC me as I'm not on the list]
Hi,
I've got a Logitech Bluetooth keyboard.
With lockdep enabled, I've got the following message just after boot, after
having pressed a key on keyboard :
=============================================
[ INFO: possible recursive locking detected ]
---------------------------------------------
hidd/3150 is trying to acquire lock:
(sk_lock-AF_BLUETOOTH){--..}, at: [<c038a85c>] bt_accept_dequeue+0x54/0xd3
but task is already holding lock:
(sk_lock-AF_BLUETOOTH){--..}, at: [<c0392e5c>] l2cap_sock_accept+0x42/0x12f
other info that might help us debug this:
1 lock held by hidd/3150:
#0: (sk_lock-AF_BLUETOOTH){--..}, at: [<c0392e5c>]
l2cap_sock_accept+0x42/0x12f
stack backtrace:
[<c0103fb9>] show_trace_log_lvl+0x11d/0x137
[<c01046b2>] show_trace+0x12/0x14
[<c010477a>] dump_stack+0x19/0x1b
[<c0134c31>] __lock_acquire+0x9e1/0xcf5
[<c0135271>] lock_acquire+0x5d/0x79
[<c02f0fa3>] lock_sock+0xb4/0xc1
[<c038a85c>] bt_accept_dequeue+0x54/0xd3
[<c0392eeb>] l2cap_sock_accept+0xd1/0x12f
[<c02f013a>] sys_accept+0xd7/0x1a0
[<c02f02c4>] sys_socketcall+0xc1/0x254
[<c0102df5>] sysenter_past_esp+0x56/0x8d
[<b7fea410>] 0xb7fea410
input: Bluetooth HID Boot Protocol Device as /class/input/input5
Kernel: Linux kev1 2.6.18-rc2 #2 SMP PREEMPT Tue Jul 18 11:44:18 CEST 2006
i686 GNU/Linux
Distribution: Debian
bluez-utils 3.1-2
libbluetooth2 3.1-1
--
Kevin Baradon
Networks & Telecom Student
-
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next reply other threads:[~2006-07-18 17:21 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-18 17:21 Kevin Baradon [this message]
2006-07-26 7:35 ` [Bluez-devel] Lockdep: possible recursive locking detected in hidd Marcel Holtmann
2006-07-26 22:04 ` Kevin Baradon
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