Re: USB/BlueTooth oops in 2.6.5

[Steven Walter]

I get a very similar oops backtrace, but from a different cause.  
Whenever I plug in my Zaurus for the /second/ time (i.e., plug it in, 
let usbnet find it, unplug it, then plug it in again), I get the 
attached oops backtrace.  This did not occur with 2.6.3; unsure about 2.6.4.

Just like in the bluetooth case, usb_disable_interface is causing the 
oops, and is being called by usb_set_interface.  I tried the patch in 
the comments of your linked bug, however that did not fix the problem.

usb0: unregister usbnet usb-0000:00:11.2-1.1, Sharp Zaurus SL-5x00
usb 1-1.1: new full speed USB device using address 7
Unable to handle kernel NULL pointer dereference at virtual address 00000004
printing eip:
e18c4ef4
*pde = 00000000
Oops: 0000 [#1]
PREEMPT
CPU:    0
EIP:    0060:[<e18c4ef4>]    Not tainted
EFLAGS: 00010286   (2.6.5)
EIP is at usb_disable_interface+0x14/0x50 [usbcore]
eax: de363cc0   ebx: 00000000   ecx: decb6000   edx: dffff0c0
esi: 00000001   edi: 00000000   ebp: de2b5000   esp: decb7d60
ds: 007b   es: 007b   ss: 0068
Process khubd (pid: 5367, threadinfo=decb6000 task=deb0cd00)
Stack: 00000001 0000000b 00000001 00000001 de73f418 de2b5000 e18c5177 
de2b5000
      de363cc0 0000000b 00000001 00000001 00000001 00000000 00000000 
00001388
      00000000 de363cc0 de73f418 de73f418 de73f2c0 00000001 e19890c1 
de2b5000
Call Trace:
[<e18c5177>] usb_set_interface+0xb7/0x180 [usbcore]
[<e19890c1>] get_endpoints+0xb1/0x120 [usbnet]
[<e198925f>] generic_cdc_bind+0xcf/0x220 [usbnet]
[<e198ac57>] usbnet_probe+0x3c7/0x400 [usbnet]
[<c0169d22>] dput+0x22/0x210
[<e18bf081>] usb_probe_interface+0x61/0x80 [usbcore]
[<c01f9acf>] bus_match+0x3f/0x70
[<c01f9b41>] device_attach+0x41/0xa0
[<c01f9d2b>] bus_add_device+0x5b/0xa0
[<c01f8bd1>] device_add+0xa1/0x130
[<e18c5516>] usb_set_configuration+0x1d6/0x270 [usbcore]
[<e18c00e9>] usb_new_device+0x249/0x3c0 [usbcore]
[<e18c1a18>] hub_port_connect_change+0x178/0x280 [usbcore]
[<e18c1dea>] hub_events+0x2ca/0x340 [usbcore]
[<e18c1e8d>] hub_thread+0x2d/0xf0 [usbcore]
[<c010725e>] ret_from_fork+0x6/0x14
[<c011a180>] default_wake_function+0x0/0x20
[<e18c1e60>] hub_thread+0x0/0xf0 [usbcore]
[<c0105291>] kernel_thread_helper+0x5/0x14

Code: 80 7b 04 00 74 26 31 f6 8d 74 26 00 8b 43 0c 47 0f b6 44 30

--
--Steven
"A is A."
	-Ayn Rand
GnuPG Fingerprint: 889A 5BED F01D 61BC 930F  A915 DB55 2585 0010 A205

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