Just found an oops, by usinh thinkpax x40:s enable/disable bluetooth
button to disable the bluetooth radio... Like I forgot to say in the
previous mail, please CC me, not subscribed and the archives seem not to
work.
Linux wombat 2.6.6-rc1 #1 Wed Apr 21 03:05:54 EEST 2004 i686 GNU/Linux
usb 4-1: USB disconnect, address 2
Unable to handle kernel NULL pointer dereference at virtual address
00000068
printing eip:
c017a875
*pde = 00000000
Oops: 0002 [#1]
PREEMPT
CPU: 0
EIP: 0060:[<c017a875>] Not tainted
EFLAGS: 00010282 (2.6.6-rc1)
EIP is at sysfs_hash_and_remove+0x15/0x7d
eax: 00000000 ebx: e015b3c0 ecx: 00000068 edx: de4f0690
esi: de544280 edi: e015b360 ebp: e015b3c0 esp: de76de58
ds: 007b es: 007b ss: 0068
Process khubd (pid: 280, threadinfo=de76c000 task=dea2e230)
Stack: de4f0580 e0133cc0 e015b3c0 de81cd30 c01d2b5f de544280 c0292ca9 c01d2ee5
de81cd30 e015b3ac de81cc00 de81cc00 de7db800 de7db824 e01531fb de81cd30
de4f0590 de4f0180 e0132cda de81cc00 de4f0580 e0133cc0 de4f0680 e0133cc0
Call Trace:
[<c01d2b5f>] class_device_dev_unlink+0x25/0x27
[<c01d2ee5>] class_device_del+0x75/0xae
[<e01531fb>] hci_unregister_dev+0x10/0x84 [bluetooth]
[<e0132cda>] hci_usb_disconnect+0x35/0x7f [hci_usb]
[<e00890e0>] usb_unbind_interface+0x7a/0x7c [usbcore]
[<c01d2365>] device_release_driver+0x64/0x66
[<c01d2489>] bus_remove_device+0x55/0x96
[<c01d1556>] device_del+0x5d/0x9b
[<c01d15a7>] device_unregister+0x13/0x23
[<e008ecfb>] usb_disable_device+0x71/0xac [usbcore]
[<e0089bbd>] usb_disconnect+0x9b/0xe8 [usbcore]
[<e008bbd3>] hub_port_connect_change+0x26f/0x274 [usbcore]
[<e008b5c4>] hub_port_status+0x45/0xb0 [usbcore]
[<e008beab>] hub_events+0x2d3/0x346 [usbcore]
[<e008bf4b>] hub_thread+0x2d/0xe4 [usbcore]
[<c0103b6e>] ret_from_fork+0x6/0x14
[<c011342c>] default_wake_function+0x0/0x12
[<e008bf1e>] hub_thread+0x0/0xe4 [usbcore]
[<c0101ffd>] kernel_thread_helper+0x5/0xb
Code: ff 48 68 78 63 89 34 24 8b 44 24 18 89 44 24 04 e8 66 ff ff
--
Riku Voipio | riku.voipio at iki.fi |
kirkkonummentie 33 | +358 44 5000343 --+--
02140 Espoo | |
dark> A bad analogy is like leaky screwdriver |
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Hi Michal,
> Send us
>
> hciconfig -a
> hciconfig hci0 revision.
>
> Possibly it is not CSR based dongle. We prefer using CSR based dongles
please check the thread, because Riku already sent this information. It
is an IBM ThinkPad X40 and it includes a CSR chip.
Regards
Marcel
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Send us
hciconfig -a
hciconfig hci0 revision.
Possibly it is not CSR based dongle. We prefer using CSR based dongles
Michal
On Thursday 06 of May 2004 20:48, Riku Voipio wrote:
> 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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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
--
Riku Voipio | riku.voipio at iki.fi |
kirkkonummentie 33 | +358 44 5000343 --+--
02140 Espoo | |
dark> A bad analogy is like leaky screwdriver |
Hi Riku,
> Here's an oops with SCO options enabled and without preempt. I wonder if
> symbols are resolved from some wrong place, thou. Anyway, these oops
> don't look like they are preempt-related.
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.
Regards
Marcel
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Here's an oops with SCO options enabled and without preempt. I wonder if
symbols are resolved from some wrong place, thou. Anyway, these oops
don't look like they are preempt-related.
usb 4-1: USB disconnect, address 2
Unable to handle kernel paging request at virtual address f000f0a4
printing eip:
c025a6fe
*pde = 00000000
Oops: 0002 [#1]
CPU: 0
EIP: 0060:[__scheduling_functions_start_here+74/188] Not tainted
EFLAGS: 00010002 (2.6.6-rc-noprempt3)
EIP is at __down+0x4a/0xbc
eax: f000f0a4 ebx: 00000068 ecx: 00000000 edx: de9b7e24
esi: de9cb2b0 edi: 00000246 ebp: 00000070 esp: de9b7e18
ds: 007b es: 007b ss: 0068
Process khubd (pid: 510,threadinfo=de9b6000 task=de9cb2b0)
Stack: 00000001 de9cb2b0 c0112200 00000070 00000000 e008ca2f def95000 80000200
e016f8a0 dad6e580 e016f840 e016f8a0 c025a86c 00000068 ffff0001 00000000
c0170342 daf35d54 e015f8e0 e016f8a0 debfbb30 c01c4d54 dad6e580 c027e049
Call Trace:
[default_wake_function+0/18] default_wake_function+0x0/0x12
[pg0+533998127/1070284800] usb_set_interface+0xa3/0x167 [usbcore]
[__down_failed+8/12] __down_failed+0x8/0xc
[.text.lock.inode+5/15] .text.lock.inode+0x5/0xf
[class_device_dev_unlink+26/30]class_device_dev_unlink+0x1a/0x1e
[class_device_del+117/174] class_device_del+0x75/0xae
[pg0+534895964/1070284800] hci_unregister_dev+0x13/0x74 [bluetooth]
[pg0+534857951/1070284800] hci_usb_disconnect+0x35/0x7e [hci_usb]
[pg0+533975264/1070284800] usb_unbind_interface+0x7a/0x7c [usbcore]
[device_release_driver+100/102] device_release_driver+0x64/0x66
[bus_remove_device+85/150] bus_remove_device+0x55/0x96
[device_del+93/155] device_del+0x5d/0x9b
[device_unregister+19/35] device_unregister+0x13/0x23
[pg0+533997713/1070284800] usb_disable_device+0x71/0xac [usbcore]
[pg0+533978045/1070284800] usb_disconnect+0x9b/0xe8 [usbcore]
[pg0+533985987/1070284800] hub_port_connect_change+0x26f/0x274 [usbcore]
[pg0+533984436/1070284800] hub_port_status+0x45/0xb0 [usbcore]
[pg0+533986671/1070284800] hub_events+0x2a7/0x2fa [usbcore]
[pg0+533986799/1070284800] hub_thread+0x2d/0xe4 [usbcore]
[ret_from_fork+6/20] ret_from_fork+0x6/0x14
[default_wake_function+0/18] default_wake_function+0x0/0x12
[pg0+533986754/1070284800] hub_thread+0x0/0xe4 [usbcore]
[kernel_thread_helper+5/11] kernel_thread_helper+0x5/0xb
Code: 89 10 89 44 24 10 83 43 04 01 8b 43 04 83 e8 01 01 03 0f 98
--
Riku Voipio | riku.voipio at iki.fi |
kirkkonummentie 33 | +358 44 5000343 --+--
02140 Espoo | |
dark> A bad analogy is like leaky screwdriver |
Hi Michal,
> switch off Preempt kernel, switch off sco support. This helped me.
I already know that SCO support triggers it, but the preempt is worth to
try. So leave SCO on and disable preempt. Do the bug still occurs?
Regards
Marcel
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Hi,
switch off Preempt kernel, switch off sco support. This helped me.
Michal
On Tuesday 04 of May 2004 19:22, Riku Voipio wrote:
> Hi Marcel,
>
> > > > do you enabled CONFIG_BT_HCIUSB_SCO in your kernel? If yes, disable
> > > > it and try again.
> > >
> > > Getting rid SCO option and updating to 2.6.6-RC3 makes the bluetooth
> > > on x40 work like a charm, no more oops and pairing worked first try.
> > > I can try 2.6.6-RC3 with CONFIG_BT_HCIUSB_SCO if you want to track
> > > the problem deeper.
> >
> > please do so, because actually I don't know why it happens.
>
> With -RC3 and SCO enabled, I get the following Oops: (Tanted due to
> madwifi)
>
> Unable to handle kernel NULL pointer dereference at virtual address
> 00000068
> printing eip:
> c017a671
> *pde = 00000000
> Oops: 0002 [#1]
> PREEMPT
> CPU: 0
> EIP: 0060:[<c017a671>] Tainted: P
> EFLAGS: 00010282 (2.6.6-rc3)
> EIP is at sysfs_hash_and_remove+0x15/0x7d
> eax: 00000000 ebx: e006c3e0 ecx: 00000068 edx: ffff0001
> esi: dafc3680 edi: e006c380 ebp: e006c3e0 esp: ccc55e58
> ds: 007b es: 007b ss: 0068
> Process khubd (pid: 7775, threadinfo=ccc54000 task=ccc3c3b0)
> Stack: d3c87554 e0033d40 e006c3e0 c7804530 c01d2e4c dafc3680 c0293529
> c01d31c4 c7804530 e006c3cc c7804400 c7804400 d7189400 d7189424 e00641eb
> c7804530 d3c87564 d3c87454 e0032d11 c7804400 d3c87554 e0033d40 d3c87c54
> e0033d40 Call Trace:
> [<c01d2e4c>] class_device_dev_unlink+0x1a/0x1e
> [<c01d31c4>] class_device_del+0x75/0xae
> [<e00641eb>] hci_unregister_dev+0x10/0x84 [bluetooth]
> [<e0032d11>] hci_usb_disconnect+0x35/0x7c [hci_usb]
> [<e00880e0>] usb_unbind_interface+0x7a/0x7c [usbcore]
> [<c01d265d>] device_release_driver+0x64/0x66
> [<c01d2781>] bus_remove_device+0x55/0x96
> [<c01d184e>] device_del+0x5d/0x9b
> [<c01d189f>] device_unregister+0x13/0x23
> [<e008dcfb>] usb_disable_device+0x71/0xac [usbcore]
> [<e0088bbd>] usb_disconnect+0x9b/0xe8 [usbcore]
> [<e008abd3>] hub_port_connect_change+0x26f/0x274 [usbcore]
> [<e008a5c4>] hub_port_status+0x45/0xb0 [usbcore]
> [<e008aeab>] hub_events+0x2d3/0x346 [usbcore]
> [<e008af4b>] hub_thread+0x2d/0xe4 [usbcore]
> [<c0103b6e>] ret_from_fork+0x6/0x14
> [<c01130ac>] default_wake_function+0x0/0x12
> [<e008af1e>] hub_thread+0x0/0xe4 [usbcore]
> [<c0101ffd>] kernel_thread_helper+0x5/0xb
>
> Code: ff 48 68 78 63 89 34 24 8b 44 24 18 89 44 24 04 e8 66 ff ff
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Hi Marcel,
> > > do you enabled CONFIG_BT_HCIUSB_SCO in your kernel? If yes, disable it
> > > and try again.
> > Getting rid SCO option and updating to 2.6.6-RC3 makes the bluetooth
> > on x40 work like a charm, no more oops and pairing worked first try.
> > I can try 2.6.6-RC3 with CONFIG_BT_HCIUSB_SCO if you want to track
> > the problem deeper.
> please do so, because actually I don't know why it happens.
With -RC3 and SCO enabled, I get the following Oops: (Tanted due to
madwifi)
Unable to handle kernel NULL pointer dereference at virtual address
00000068
printing eip:
c017a671
*pde = 00000000
Oops: 0002 [#1]
PREEMPT
CPU: 0
EIP: 0060:[<c017a671>] Tainted: P
EFLAGS: 00010282 (2.6.6-rc3)
EIP is at sysfs_hash_and_remove+0x15/0x7d
eax: 00000000 ebx: e006c3e0 ecx: 00000068 edx: ffff0001
esi: dafc3680 edi: e006c380 ebp: e006c3e0 esp: ccc55e58
ds: 007b es: 007b ss: 0068
Process khubd (pid: 7775, threadinfo=ccc54000 task=ccc3c3b0)
Stack: d3c87554 e0033d40 e006c3e0 c7804530 c01d2e4c dafc3680 c0293529 c01d31c4
c7804530 e006c3cc c7804400 c7804400 d7189400 d7189424 e00641eb c7804530
d3c87564 d3c87454 e0032d11 c7804400 d3c87554 e0033d40 d3c87c54 e0033d40
Call Trace:
[<c01d2e4c>] class_device_dev_unlink+0x1a/0x1e
[<c01d31c4>] class_device_del+0x75/0xae
[<e00641eb>] hci_unregister_dev+0x10/0x84 [bluetooth]
[<e0032d11>] hci_usb_disconnect+0x35/0x7c [hci_usb]
[<e00880e0>] usb_unbind_interface+0x7a/0x7c [usbcore]
[<c01d265d>] device_release_driver+0x64/0x66
[<c01d2781>] bus_remove_device+0x55/0x96
[<c01d184e>] device_del+0x5d/0x9b
[<c01d189f>] device_unregister+0x13/0x23
[<e008dcfb>] usb_disable_device+0x71/0xac [usbcore]
[<e0088bbd>] usb_disconnect+0x9b/0xe8 [usbcore]
[<e008abd3>] hub_port_connect_change+0x26f/0x274 [usbcore]
[<e008a5c4>] hub_port_status+0x45/0xb0 [usbcore]
[<e008aeab>] hub_events+0x2d3/0x346 [usbcore]
[<e008af4b>] hub_thread+0x2d/0xe4 [usbcore]
[<c0103b6e>] ret_from_fork+0x6/0x14
[<c01130ac>] default_wake_function+0x0/0x12
[<e008af1e>] hub_thread+0x0/0xe4 [usbcore]
[<c0101ffd>] kernel_thread_helper+0x5/0xb
Code: ff 48 68 78 63 89 34 24 8b 44 24 18 89 44 24 04 e8 66 ff ff
--
Riku Voipio | riku.voipio at iki.fi |
kirkkonummentie 33 | +358 44 5000343 --+--
02140 Espoo | |
dark> A bad analogy is like leaky screwdriver |
Hi Riku,
> > do you enabled CONFIG_BT_HCIUSB_SCO in your kernel? If yes, disable it
> > and try again.
>
> Thanks for everyone for help!
>
> Getting rid SCO option and updating to 2.6.6-RC3 makes the bluetooth
> on x40 work like a charm, no more oops and pairing worked first try.
> I can try 2.6.6-RC3 with CONFIG_BT_HCIUSB_SCO if you want to track
> the problem deeper.
please do so, because actually I don't know why it happens. Do anyone
with an AVM BlueFRITZ! USB and the bfusb driver have seens this oops? I
don't get the point what it has to do with the ISOC URB's.
Regards
Marcel
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On Mon, May 03, 2004 at 02:26:45PM +0200, Marcel Holtmann wrote:
> Hi Riku,
> do you enabled CONFIG_BT_HCIUSB_SCO in your kernel? If yes, disable it
> and try again.
Thanks for everyone for help!
Getting rid SCO option and updating to 2.6.6-RC3 makes the bluetooth
on x40 work like a charm, no more oops and pairing worked first try.
I can try 2.6.6-RC3 with CONFIG_BT_HCIUSB_SCO if you want to track
the problem deeper.
Attached are hcitool info/hconfig -a of the gadgets:
Thinkpad x40
hci0: Type: USB
BD Address: 00:20:E0:74:xx:xx ACL MTU: 192:8 SCO MTU: 64:8
UP RUNNING PSCAN ISCAN
RX bytes:18298 acl:611 sco:0 events:344 errors:0
TX bytes:5109 acl:203 sco:0 commands:69 errors:0
Features: 0xff 0xff 0x0f 0x00 0x00 0x00 0x00 0x00
Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
Link policy: HOLD SNIFF PARK
Link mode: SLAVE ACCEPT
Name: 'wombat-0'
Class: 0x000100
Service Classes: Unspecified
Device Class: Computer, Uncategorized
HCI Ver: 1.1 (0x1) HCI Rev: 0x222 LMP Ver: 1.1 (0x1) LMP Subver: 0x222
Manufacturer: Cambridge Silicon Radio (10)
Siemens S55
BD Address: 00:01:E3:04:xx:xx
Device Name: xxxx
LMP Version: 1.1 (0x1) LMP Subversion: 0x555
Manufacturer: Infineon Technologies AG (9)
Features: 0xef 0xea 0x19 0x00 0x00 0x00 0x00 0x00
<3-slot packets> <5-slot packets> <encryption> <slot offset>
<role switch> <hold mode> <sniff mode> <RSSI>
<SCO link> <HV3 packets> <u-law log> <A-law log>
<CVSD> <transparent SCO>
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Hi Riku,
> Just found an oops, by usinh thinkpax x40:s enable/disable bluetooth
> button to disable the bluetooth radio... Like I forgot to say in the
> previous mail, please CC me, not subscribed and the archives seem not to
> work.
do you enabled CONFIG_BT_HCIUSB_SCO in your kernel? If yes, disable it
and try again.
Regards
Marcel
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On Saturday 01 May 2004 18:36, Riku Voipio wrote:
> Linux wombat 2.6.6-rc1 #1 Wed Apr 21 03:05:54 EEST 2004 i686 GNU/Linux
>
> usb 4-1: USB disconnect, address 2
> Unable to handle kernel NULL pointer dereference at virtual address
I had something very like this with 2.6.5, but it went with 2.6.6-rc2.
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On 0, Riku Voipio <[email protected]> wrote:
> Just found an oops, by usinh thinkpax x40:s enable/disable bluetooth
> button to disable the bluetooth radio... Like I forgot to say in the
> previous mail, please CC me, not subscribed and the archives seem not to
> work.
>
> Linux wombat 2.6.6-rc1 #1 Wed Apr 21 03:05:54 EEST 2004 i686 GNU/Linux
>
> usb 4-1: USB disconnect, address 2
> Unable to handle kernel NULL pointer dereference at virtual address
> 00000068
> printing eip:
> c017a875
> *pde = 00000000
> Oops: 0002 [#1]
> PREEMPT
> CPU: 0
> EIP: 0060:[<c017a875>] Not tainted
> EFLAGS: 00010282 (2.6.6-rc1)
> EIP is at sysfs_hash_and_remove+0x15/0x7d
> eax: 00000000 ebx: e015b3c0 ecx: 00000068 edx: de4f0690
> esi: de544280 edi: e015b360 ebp: e015b3c0 esp: de76de58
> ds: 007b es: 007b ss: 0068
> Process khubd (pid: 280, threadinfo=de76c000 task=dea2e230)
> Stack: de4f0580 e0133cc0 e015b3c0 de81cd30 c01d2b5f de544280 c0292ca9 c01d2ee5
> de81cd30 e015b3ac de81cc00 de81cc00 de7db800 de7db824 e01531fb de81cd30
> de4f0590 de4f0180 e0132cda de81cc00 de4f0580 e0133cc0 de4f0680 e0133cc0
> Call Trace:
> [<c01d2b5f>] class_device_dev_unlink+0x25/0x27
> [<c01d2ee5>] class_device_del+0x75/0xae
> [<e01531fb>] hci_unregister_dev+0x10/0x84 [bluetooth]
> [<e0132cda>] hci_usb_disconnect+0x35/0x7f [hci_usb]
> [<e00890e0>] usb_unbind_interface+0x7a/0x7c [usbcore]
> [<c01d2365>] device_release_driver+0x64/0x66
> [<c01d2489>] bus_remove_device+0x55/0x96
> [<c01d1556>] device_del+0x5d/0x9b
> [<c01d15a7>] device_unregister+0x13/0x23
> [<e008ecfb>] usb_disable_device+0x71/0xac [usbcore]
> [<e0089bbd>] usb_disconnect+0x9b/0xe8 [usbcore]
> [<e008bbd3>] hub_port_connect_change+0x26f/0x274 [usbcore]
> [<e008b5c4>] hub_port_status+0x45/0xb0 [usbcore]
> [<e008beab>] hub_events+0x2d3/0x346 [usbcore]
> [<e008bf4b>] hub_thread+0x2d/0xe4 [usbcore]
> [<c0103b6e>] ret_from_fork+0x6/0x14
> [<c011342c>] default_wake_function+0x0/0x12
> [<e008bf1e>] hub_thread+0x0/0xe4 [usbcore]
> [<c0101ffd>] kernel_thread_helper+0x5/0xb
>
> Code: ff 48 68 78 63 89 34 24 8b 44 24 18 89 44 24 04 e8 66 ff ff
USB Subsystem in 2.6.6-rc1/2 is heavily under construction. And has
several problems. This is not a hci_usb bug. And quiet normal for a
development pre release. Report bugs to usb developers. (but I think
this is known)
nicholas
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