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Date: Thu, 6 May 2004 21:48:16 +0300
From: Riku Voipio <riku.voipio@iki.fi>
To: Marcel Holtmann <marcel@holtmann.org>
Cc: BlueZ Mailing List <bluez-users@lists.sourceforge.net>
Subject: Re: [Bluez-users] Oops in hci_usb
Message-ID: <20040506184816.GA7468@kos.to>
References: <20040501173626.GA3866@kos.to> <1083587205.4666.0.camel@pegasus> <20040503193747.GA21331@kos.to> <1083686495.4666.39.camel@pegasus> <20040505190725.GB1339@kos.to> <1083785352.4420.33.camel@pegasus>
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Sender: Riku Voipio <nchip@kos.to>
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On Wed, May 05, 2004 at 09:29:12PM +0200, Marcel Holtmann wrote:
> this is a wild guess, but maybe the linking of the USB device into the
> /sys structure causes this problem. So please comment out this line
 
> 	SET_HCIDEV_DEV(hdev, &intf->dev);
 
> in the hci_usb driver and try again.

Seemingly didn't help..

usb 4-1: USB disconnect, address 2
Unable to handle kernel NULL pointer dereference at virtual address
00000000
 printing eip:
c019b4bf
*pde = 00000000
Oops: 0000 [#1]
CPU:    0
EIP:    0060:[<c019b4bf>]    Not tainted
EFLAGS: 00010246   (2.6.6-rc-noprempt3)
EIP is at get_kobj_path_length+0x1a/0x31
eax: 00000000   ebx: 00000000   ecx: ffffffff   edx: d993cf38
esi: 00000001   edi: 00000000   ebp: ffffffff   esp: dd235e00
ds: 007b   es: 007b   ss: 0068
Process khubd (pid: 514, threadinfo=dd234000 task=dd28c830)
Stack: c01c4e80 dd8d1819 dd8d1800 dd382390 c019b65e c02d9900 d993cf38 00000100
       e016f8a0 c014ece7 dd235e40 dd8d1800 00000000 c02a4ee0 e016c591 00000000
       c027ef6f d993cf38 d993cf30 e016f840 e016f8a0 c019b7e2 c027de26 c02d9900
Call Trace:
 [<c01c4e80>] class_hotplug_filter+0x0/0x2c
 [<c019b65e>] kset_hotplug+0x139/0x268
 [<c014ece7>] lookup_hash+0x1f/0x23
 [<c019b7e2>] kobject_hotplug+0x55/0x57
 [<c019bafb>] kobject_del+0x1b/0x33
 [<c01c50df>] class_device_del+0x88/0xae
 [<e0167d5c>] hci_unregister_dev+0x13/0x74 [bluetooth]
 [<e015e8d9>] hci_usb_disconnect+0x35/0x7c [hci_usb]
 [<e00870e0>] usb_unbind_interface+0x7a/0x7c [usbcore]
 [<c01c4565>] device_release_driver+0x64/0x66
 [<c01c4689>] bus_remove_device+0x55/0x96
 [<c01c3756>] device_del+0x5d/0x9b
 [<c01c37a7>] device_unregister+0x13/0x23
 [<e008c891>] usb_disable_device+0x71/0xac [usbcore]
 [<e0087bbd>] usb_disconnect+0x9b/0xe8 [usbcore]
 [<e0089ac3>] hub_port_connect_change+0x26f/0x274 [usbcore]
 [<e00894b4>] hub_port_status+0x45/0xb0 [usbcore]
 [<e0089d6f>] hub_events+0x2a7/0x2fa [usbcore]
 [<e0089def>] hub_thread+0x2d/0xe4 [usbcore]
 [<c0103982>] ret_from_fork+0x6/0x14
 [<c0112200>] default_wake_function+0x0/0x12
 [<e0089dc2>] hub_thread+0x0/0xe4 [usbcore]
 [<c0101f7d>] kernel_thread_helper+0x5/0xb

Code: f2 ae f7 d1 49 8b 52 24 8d 74 31 01 85 d2 75 ea 5b 89 f0 5e

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Riku Voipio  	       | riku.voipio at iki.fi         |
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dark> A bad analogy is like leaky screwdriver          |