Hello,
(I hope this is the right place to report this)
I am seeing an oops under 2.6.5 when connecting a DSL-modem:
(modules uhci_hcd, usbnet loaded, distro SuSE 9.0)
dmesg:
-----snip-----
usb 1-1: new full speed USB device using address 2
usb 1-1: configuration #2 chosen from 2 choices
Unable to handle kernel NULL pointer dereference at virtual address
00000004
printing eip:
c8a09fd4
*pde = 00000000
Oops: 0000 [#1]
CPU: 0
EIP: 0060:[<c8a09fd4>] Not tainted
EFLAGS: 00010296 (2.6.5)
EIP is at usb_disable_interface+0x14/0x50 [usbcore]
eax: c29abc60 ebx: 00000000 ecx: 00000282 edx: 00000037
esi: 00000001 edi: 00000000 ebp: c6336c00 esp: c793fd48
ds: 007b es: 007b ss: 0068
Process khubd (pid: 873, threadinfo=c793e000 task=c7929740)
Stack: 00001388 00009900 00000001 00000001 c59d2e78 c6336c00 c8a0b0cb
c6336c00
c29abc60 0000000b 00000001 00000001 00000001 00000000 00000000
00001388
00000000 c29abc60 c59d2e78 c59d2e78 c59d2660 00000001 c89c53ef
c6336c00
Call Trace:
[<c8a0b0cb>] usb_set_interface+0xbb/0x190 [usbcore]
[<c89c53ef>] get_endpoints+0x9f/0x120 [usbnet]
[<c89c559a>] cdc_bind+0x12a/0x320 [usbnet]
[<c89c5c00>] usbnet_tx_timeout+0x0/0x40 [usbnet]
[<c89c5a8e>] usbnet_probe+0x2fe/0x410 [usbnet]
[<c8a05381>] usb_probe_interface+0x61/0x90 [usbcore]
[<c020b35b>] bus_match+0x3b/0x80
[<c020b3ea>] device_attach+0x4a/0xc0
[<c020b4e1>] bus_add_device+0x51/0x90
[<c020a5f5>] device_add+0xa5/0x140
[<c8a0ada4>] usb_set_configuration+0x1e4/0x280 [usbcore]
[<c8a05e2b>] usb_new_device+0x25b/0x3c0 [usbcore]
[<c8a07dd7>] hub_port_connect_change+0x2a7/0x370 [usbcore]
[<c8a08166>] hub_thread+0x2c6/0x4c0 [usbcore]
[<c0116fb0>] default_wake_function+0x0/0x20
[<c8a07ea0>] hub_thread+0x0/0x4c0 [usbcore]
[<c0105005>] kernel_thread_helper+0x5/0x10
Code: 80 7b 04 00 74 26 31 f6 8d 74 26 00 8b 43 0c 47 0f b6 44 30
-----snip-----
relevant parts from .config:
-----snip-----
#
# USB Network adaptors
#
# CONFIG_USB_CATC is not set
# CONFIG_USB_KAWETH is not set
# CONFIG_USB_PEGASUS is not set
# CONFIG_USB_RTL8150 is not set
CONFIG_USB_USBNET=m
#
# USB Host-to-Host Cables
#
# CONFIG_USB_ALI_M5632 is not set
# CONFIG_USB_AN2720 is not set
# CONFIG_USB_BELKIN is not set
# CONFIG_USB_GENESYS is not set
# CONFIG_USB_NET1080 is not set
# CONFIG_USB_PL2301 is not set
#
# Intelligent USB Devices/Gadgets
#
# CONFIG_USB_ARMLINUX is not set
# CONFIG_USB_EPSON2888 is not set
# CONFIG_USB_ZAURUS is not set
CONFIG_USB_CDCETHER=y
----snip-----
rmmod usbnet after the oops gives the following in the logs:
-----snip-----
<6>drivers/usb/core/usb.c: deregistering driver usbnet
-----snip-----
but the modules is not removed, and rmmod doesn't return.
If i connect the device without usbnet loaded i get from
cat /proc/bus/usb/devices:
-----snip-----
T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2
B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0000 ProdID=0000 Rev= 2.06
S: Manufacturer=Linux 2.6.5 uhci_hcd
S: Product=Intel Corp. 82801BA/BAM USB (Hub #2)
S: SerialNumber=0000:00:1f.4
C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 0mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2
B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0000 ProdID=0000 Rev= 2.06
S: Manufacturer=Linux 2.6.5 uhci_hcd
S: Product=Intel Corp. 82801BA/BAM USB (Hub #1)
S: SerialNumber=0000:00:1f.2
C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 0mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms
T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 0
D: Ver= 1.00 Cls=02(comm.) Sub=00 Prot=00 MxPS= 8 #Cfgs= 2
P: Vendor=067f ProdID=4552 Rev=10.00
S: Manufacturer=AMBIT
S: Product=9Telecom USB Modem
S: SerialNumber=00:02:8a:f5:ec:d0
C: #Ifs= 2 Cfg#= 1 Atr=c0 MxPwr= 2mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=02 Prot=ff Driver=(none)
E: Ad=81(I) Atr=03(Int.) MxPS= 8 Ivl=32ms
I: If#= 1 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=(none)
E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=83(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
C:* #Ifs= 2 Cfg#= 2 Atr=c0 MxPwr= 2mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=06 Prot=00 Driver=(none)
E: Ad=81(I) Atr=03(Int.) MxPS= 8 Ivl=32ms
I: If#= 1 Alt= 0 #EPs= 0 Cls=0a(data ) Sub=00 Prot=00 Driver=(none)
I: If#= 1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=(none)
E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=83(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
-----snip-----
I can provide further info if necessary.
Thanks for any advice,
Markus
PS: Please cc me, as I'm not on the list
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