I've been doing a lot of work recently on the linux-wlan-ng prism2.5 USB driver, and I've finally reached the pointw here I have to break down and ask for help from someone more familiar with the USB way of things.
Basically, thanks to firmware bugs in the hardware, it's often necessary
to reset the device on initialization. Unfortunately, this caruses a
kernel oops on some machines. (and by device reset, I mean
usb_reset_device() or something similar, ie resetting the port that the
device is plugged into)
There are several scenarios here, some work; some don't.. so please bear
with me.
All of these cases are with kernel 2.4.19-pre8/i386
1) Device plugged in on bootup.
a) Without the device reset, the device does not initialize properly,
and unplugging/replugging is necessary.
b) With the device reset in the driver, on a KT266 (usb-uhci) the
devices initializes fine.
c) With the device reset, on an i830m (usb-uhci) we get a kernel oops.
d) With the device reset, on the same i830m (uhci-alt), it initializes
fine.
e) With the reset, on an i830m, and the usb-uhci driver, with the
device plugged into a hub, it works fine.
2) Device plugged in after boot
Works fine with either driver.
It seems that the way the usb-uhci resets ports on the root hub isn't
quite sane. It's also worth noting that the device reset happens insie
the usb_probe_device context.
Attached is a dull dmesg output of the boot run with the kernel panic
using usb-uhci, and the result of passing the oops through ksymoops.
- Pizza [if you would CC replies to me, please..]
--
Solomon Peachy
I ain't broke, but I'm badly bent. ICQ# 1318344
Patience comes to those who wait.
...It's not "Beanbag Love", it's a "Transanimate Relationship"...
Linux version 2.4.19-pre8 ([EMAIL PROTECTED]) (gcc version 2.96 20000731 (Red
Hat Linux 7.1 2.96-98)) #2 Thu May 23 10:46:31 EDT 2002
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
BIOS-e820: 0000000000100000 - 0000000013fe2800 (usable)
BIOS-e820: 0000000013fe2800 - 0000000014000000 (reserved)
BIOS-e820: 00000000feda0000 - 00000000fee00000 (reserved)
BIOS-e820: 00000000ffb80000 - 0000000100000000 (reserved)
319MB LOWMEM available.
On node 0 totalpages: 81890
zone(0): 4096 pages.
zone(1): 77794 pages.
zone(2): 0 pages.
Kernel command line: root=/dev/hda2 video=radeonfb:1400x1050
Initializing CPU#0
Detected 996.794 MHz processor.
Console: colour VGA+ 80x25
Calibrating delay loop... 1985.74 BogoMIPS
Memory: 321872k/327560k available (1051k kernel code, 5300k reserved, 255k data, 228k
init, 0k highmem)
Dentry cache hash table entries: 65536 (order: 7, 524288 bytes)
Inode cache hash table entries: 32768 (order: 6, 262144 bytes)
Mount-cache hash table entries: 8192 (order: 4, 65536 bytes)
Buffer-cache hash table entries: 16384 (order: 4, 65536 bytes)
Page-cache hash table entries: 131072 (order: 7, 524288 bytes)
CPU: Before vendor init, caps: 0383f9ff 00000000 00000000, vendor = 0
CPU: L1 I cache: 16K, L1 D cache: 16K
CPU: L2 cache: 512K
CPU: After vendor init, caps: 0383f9ff 00000000 00000000 00000000
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU: After generic, caps: 0383f9ff 00000000 00000000 00000000
CPU: Common caps: 0383f9ff 00000000 00000000 00000000
CPU: Intel(R) Pentium(R) III Mobile CPU 1000MHz stepping 01
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
mtrr: v1.40 (20010327) Richard Gooch ([EMAIL PROTECTED])
mtrr: detected mtrr type: Intel
PCI: PCI BIOS revision 2.10 entry at 0xfbfee, last bus=2
PCI: Using configuration type 1
PCI: Probing PCI hardware
Unknown bridge resource 2: assuming transparent
PCI: Discovered primary peer bus 08 [IRQ]
PCI: Using IRQ router PIIX [8086/248c] at 00:1f.0
PCI: Found IRQ 11 for device 00:1f.1
PCI: Sharing IRQ 11 with 02:00.0
PCI: Cannot allocate resource region 0 of device 02:03.0
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
apm: BIOS version 1.2 Flags 0x03 (Driver version 1.16)
Starting kswapd
VFS: Diskquotas version dquot_6.4.0 initialized
Journalled Block Device driver loaded
devfs: v1.12 (20020219) Richard Gooch ([EMAIL PROTECTED])
devfs: boot_options: 0x1
PCI: Found IRQ 11 for device 01:00.0
PCI: Sharing IRQ 11 with 00:1d.0
radeonfb: ref_clk=2700, ref_div=60, xclk=16600 from BIOS
radeonfb: panel ID string: Samsung LTN150P1-L02
radeonfb: detected DFP panel size from BIOS: 1400x1050
Console: switching to colour frame buffer device 175x65
radeonfb: ATI Radeon M6 LY DDR SGRAM 16 MB
radeonfb: DVI port LCD monitor connected
radeonfb: CRT port no monitor connected
pty: 256 Unix98 ptys configured
Serial driver version 5.05c (2001-07-08) with MANY_PORTS SHARE_IRQ SERIAL_PCI enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS01 at 0x02f8 (irq = 3) is a 16550A
PCI: Found IRQ 11 for device 00:1f.6
PCI: Sharing IRQ 11 with 00:1f.5
PCI: Sharing IRQ 11 with 02:03.0
i810_rng: RNG not detected
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
PIIX4: IDE controller on PCI bus 00 dev f9
PCI: Enabling device 00:1f.1 (0005 -> 0007)
PCI: Found IRQ 11 for device 00:1f.1
PCI: Sharing IRQ 11 with 02:00.0
PIIX4: chipset revision 1
PIIX4: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0xbfa0-0xbfa7, BIOS settings: hda:DMA, hdb:pio
ide1: BM-DMA at 0xbfa8-0xbfaf, BIOS settings: hdc:DMA, hdd:pio
hda: IBM-DJSA-220, ATA DISK drive
hdc: LG DVD-ROM DRN-8080B, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: host protected area => 1
hda: 39070080 sectors (20004 MB) w/1874KiB Cache, CHS=2432/255/63, UDMA(66)
hdc: ATAPI 24X DVD-ROM drive, 512kB Cache, DMA
Uniform CD-ROM driver Revision: 3.12
Partition check:
/dev/ide/host0/bus0/target0/lun0: p1 p2 p3
Linux Kernel Card Services 3.1.22
options: [pci] [cardbus] [pm]
PCI: Found IRQ 11 for device 02:01.0
PCI: Sharing IRQ 11 with 02:01.1
PCI: Found IRQ 11 for device 02:01.1
PCI: Sharing IRQ 11 with 02:01.0
Intel PCIC probe: not found.
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
IP: routing cache hash table of 2048 buckets, 16Kbytes
TCP: Hash tables configured (established 32768 bind 32768)
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
Yenta IRQ list 06f8, PCI irq11
Socket status: 30000006
Yenta IRQ list 06f8, PCI irq11
Socket status: 30000006
kjournald starting. Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
VFS: Mounted root (ext3 filesystem) readonly.
Mounted devfs on /dev
Freeing unused kernel memory: 228k freed
Adding Swap: 136512k swap-space (priority -1)
usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
usb-uhci.c: $Revision: 1.275 $ time 10:52:19 May 23 2002
usb-uhci.c: High bandwidth mode enabled
PCI: Found IRQ 11 for device 00:1d.0
PCI: Sharing IRQ 11 with 01:00.0
PCI: Setting latency timer of device 00:1d.0 to 64
usb-uhci.c: USB UHCI at I/O 0xbf80, IRQ 11
usb-uhci.c: Detected 2 ports
usb.c: new USB bus registered, assigned bus number 1
usb.c: kmalloc IF d3863440, numif 1
usb.c: new device strings: Mfr=0, Product=2, SerialNumber=1
usb.c: USB device number 1 default language ID 0x0
Product: USB UHCI Root Hub
SerialNumber: bf80
hub.c: USB hub found
hub.c: 2 ports detected
hub.c: standalone hub
hub.c: ganged power switching
hub.c: global over-current protection
hub.c: Port indicators are not supported
hub.c: power on to power good time: 2ms
hub.c: hub controller current requirement: 0mA
hub.c: port removable status: RR
hub.c: local power source is good
hub.c: no over-current condition exists
hub.c: enabling power on all ports
usb.c: hub driver claimed interface d3863440
usb.c: kusbd: /sbin/hotplug add 1
usb-uhci.c: v1.275:USB Universal Host Controller Interface driver
EXT3 FS 2.4-0.9.18, 14 May 2002 on ide0(3,2), internal journal
inserting floppy driver for 2.4.19-pre8
Floppy drive(s): fd0 is 1.44M
FDC 0 is a post-1991 82077
hub.c: port 1, portstatus 101, change 1, 12 Mb/s
hub.c: port 1 connection change
hub.c: port 1, portstatus 101, change 1, 12 Mb/s
hub.c: port 1, portstatus 101, change 0, 12 Mb/s
hub.c: port 1, portstatus 101, change 0, 12 Mb/s
hub.c: port 1, portstatus 101, change 0, 12 Mb/s
hub.c: port 1, portstatus 101, change 0, 12 Mb/s
hub.c: port 1, portstatus 103, change 0, 12 Mb/s
hub.c: USB new device connect on bus1/1, assigned device number 2
usb.c: kmalloc IF d3ad59e0, numif 1
usb.c: new device strings: Mfr=0, Product=0, SerialNumber=1
usb.c: USB device number 2 default language ID 0x409
SerialNumber: 01190006
usb.c: unhandled interfaces on device
usb.c: USB device 2 (vend/prod 0x9aa/0x3642) is not claimed by any active driver.
Length = 18
DescriptorType = 01
USB version = 1.10
Vendor:Product = 09aa:3642
MaxPacketSize0 = 8
NumConfigurations = 1
Device version = 1.32
Device Class:SubClass:Protocol = 00:00:00
Per-interface classes
Configuration:
bLength = 9
bDescriptorType = 02
wTotalLength = 0027
bNumInterfaces = 01
bConfigurationValue = 01
iConfiguration = 00
bmAttributes = 80
MaxPower = 500mA
Interface: 0
Alternate Setting: 0
bLength = 9
bDescriptorType = 04
bInterfaceNumber = 01
bAlternateSetting = 00
bNumEndpoints = 03
bInterface Class:SubClass:Protocol = ff:ff:ff
iInterface = 00
Endpoint:
bLength = 7
bDescriptorType = 05
bEndpointAddress = 81 (in)
bmAttributes = 02 (Bulk)
wMaxPacketSize = 0040
bInterval = 00
Endpoint:
bLength = 7
bDescriptorType = 05
bEndpointAddress = 02 (out)
bmAttributes = 02 (Bulk)
wMaxPacketSize = 0040
bInterval = 00
Endpoint:
bLength = 7
bDescriptorType = 05
bEndpointAddress = 83 (in)
bmAttributes = 03 (Interrupt)
wMaxPacketSize = 0008
bInterval = 01
usb.c: kusbd: /sbin/hotplug add 2
hub.c: port 2, portstatus 100, change 0, 12 Mb/s
hub.c: port 1, portstatus 103, change 0, 12 Mb/s
hub.c: port 2, portstatus 100, change 0, 12 Mb/s
init_module: prism2_usb.o: 0.1.14-pre4 Loaded
init_module: dev_info is: prism2_usb
usb.c: registered new driver prism2_usb
prism2_usb: Attempting to claim device Prism2.x 11Mbps WLAN USB Adapter with devnum 2
hub.c: port 1, portstatus 110, change 2, 12 Mb/s
hub.c: port 1 enable change, status 110
hub.c: port 2, portstatus 100, change 0, 12 Mb/s
hub.c: port 1, portstatus 103, change 1, 12 Mb/s
hub.c: port 1 connection change
hub.c: port 1, portstatus 103, change 1, 12 Mb/s
usb.c: USB disconnect on device 2
usb.c: kusbd: /sbin/hotplug remove 2
hub.c: port 1, portstatus 103, change 0, 12 Mb/s
Unable to handle kernel paging request at virtual address 693d4568
printing eip:
d58212eb
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<d58212eb>] Not tainted
EFLAGS: 00010206
eax: 693d4550 ebx: d382ea00 ecx: d3bbdd4c edx: d35b64a0
esi: 0000012c edi: d3bbdd48 ebp: d3bbdd34 esp: d3bbdd34
ds: 0018 es: 0018 ss: 0018
Process modprobe (pid: 333, stackpage=d3bbd000)
Stack: d3bbdd74 d58213f1 d35b64a0 d3bbdd58 d3bbc000 00000000 d3bbdd60 d3bbdd60
00000000 00000000 d3bbc000 d3bbdd4c d3bbdd4c d382ea00 80000000 d3ad58c0
d3bbdd98 d5821546 d35b64a0 0000012c d3bbdd88 d3fe10a0 00000000 d3ad58c0
Call Trace: [<d58213f1>] [<d5821546>] [<d58215d7>] [<d582ef84>] [<d5822383>]
[<d582515d>] [<d5857833>] [<d5857861>] [<d585db22>] [<c0187dd5>] [<d586fc5c>]
[<d586fc40>] [<d5820db2>] [<d582ef00>] [<d5820a28>] [<d58209fc>] [<d582ef08>]
[<d582013e>] [<d586fc40>] [<d58200f5>] [<d585dd93>] [<d586fc40>] [<d586e288>]
[<c01191b6>] [<d586f834>] [<d585b060>] [<c0108a63>]
Code: 8b 40 18 85 c0 74 06 52 ff 50 0c eb 05 b8 ed ff ff ff 89 ec
<7>hub.c: port 1, portstatus 103, change 0, 12 Mb/s
hub.c: port 1, portstatus 103, change 0, 12 Mb/s
hub.c: port 1, portstatus 103, change 0, 12 Mb/s
hub.c: port 1, portstatus 103, change 0, 12 Mb/s
PCI: Found IRQ 11 for device 02:00.0
PCI: Sharing IRQ 11 with 00:1f.1
3c59x: Donald Becker and others. www.scyld.com/network/vortex.html
02:00.0: 3Com PCI 3c905C Tornado at 0xec80. Vers LK1.1.17
phy=0, phyx=24, mii_status=0x782d
cs: IO port probe 0x0100-0x04ff: excluding 0x280-0x287 0x378-0x37f 0x4d0-0x4d7
cs: IO port probe 0x0c00-0x0cff: clean.
cs: IO port probe 0x0800-0x08ff: excluding 0x800-0x817 0x828-0x837 0x840-0x84f
0x860-0x877 0x880-0x88f 0x898-0x89f 0x8a8-0x8cf 0x8e0-0x8ff
cs: IO port probe 0x1000-0x17ff: clean.
cs: IO port probe 0x0a00-0x0aff: clean.
VFS: Disk change detected on device ide1(22,0)
Dell laptop SMM driver v1.7 21/11/2001 Massimo Dal Zotto ([EMAIL PROTECTED])
ksymoops 2.4.1 on i686 2.4.19-pre8. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.19-pre8/ (default)
-m /boot/System.map-2.4.19-pre8 (default)
Warning: You did not tell me where to find symbol information. I will
assume that the log matches the kernel and modules that are running
right now and I'll use the default options above for symbol resolution.
If the current kernel and/or modules do not match the log, you can get
more accurate output by telling me the kernel version and where to find
map, modules, ksyms etc. ksymoops -h explains the options.
Warning (compare_maps): ksyms_base symbol GPLONLY_vmalloc_to_page not found in
System.map. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol usb_devfs_handle , usbcore says d582f454,
/lib/modules/2.4.19-pre8/kernel/drivers/usb/usbcore.o says d582ef14. Ignoring
/lib/modules/2.4.19-pre8/kernel/drivers/usb/usbcore.o entry
Unable to handle kernel paging request at virtual address 693d4568
d58212eb
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<d58212eb>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010206
eax: 693d4550 ebx: d382ea00 ecx: d3bbdd4c edx: d35b64a0
esi: 0000012c edi: d3bbdd48 ebp: d3bbdd34 esp: d3bbdd34
ds: 0018 es: 0018 ss: 0018
Process modprobe (pid: 333, stackpage=d3bbd000)
Stack: d3bbdd74 d58213f1 d35b64a0 d3bbdd58 d3bbc000 00000000 d3bbdd60 d3bbdd60
00000000 00000000 d3bbc000 d3bbdd4c d3bbdd4c d382ea00 80000000 d3ad58c0
d3bbdd98 d5821546 d35b64a0 0000012c d3bbdd88 d3fe10a0 00000000 d3ad58c0
Call Trace: [<d58213f1>] [<d5821546>] [<d58215d7>] [<d582ef84>] [<d5822383>]
[<d582515d>] [<d5857833>] [<d5857861>] [<d585db22>] [<c0187dd5>] [<d586fc5c>]
[<d586fc40>] [<d5820db2>] [<d582ef00>] [<d5820a28>] [<d58209fc>] [<d582ef08>]
[<d582013e>] [<d586fc40>] [<d58200f5>] [<d585dd93>] [<d586fc40>] [<d586e288>]
[<c01191b6>] [<d586f834>] [<d585b060>] [<c0108a63>]
Code: 8b 40 18 85 c0 74 06 52 ff 50 0c eb 05 b8 ed ff ff ff 89 ec
>>EIP; d58212eb <[usbcore]usb_submit_urb+1b/40> <=====
Trace; d58213f1 <[usbcore]usb_start_wait_urb+81/180>
Trace; d5821546 <[usbcore]usb_internal_control_msg+56/70>
Trace; d58215d7 <[usbcore]usb_control_msg+77/90>
Trace; d582ef84 <[usbcore]usb_address0_sem+0/14>
Trace; d5822383 <[usbcore]usb_set_address+33/40>
Trace; d582515d <[usbcore]usb_reset_device+cd/30d>
Trace; d5857833 <[p80211]register_wlandev+6f/d4>
Trace; d5857861 <[p80211]register_wlandev+9d/d4>
Trace; d585db22 <[prism2_usb]prism2sta_probe_usb+34e/40c>
Trace; c0187dd5 <vt_console_print+2a5/2c0>
Trace; d586fc5c <[prism2_usb]prism2_usb_driver+1c/38>
Trace; d586fc40 <[prism2_usb]prism2_usb_driver+0/38>
Trace; d5820db2 <[usbcore]usb_find_interface_driver+172/1d0>
Trace; d582ef00 <[usbcore]usb_bus_list_lock+0/0>
Trace; d5820a28 <[usbcore]usb_check_support+68/80>
Trace; d58209fc <[usbcore]usb_check_support+3c/80>
Trace; d582ef08 <[usbcore]usb_bus_list+0/18>
Trace; d582013e <[usbcore]usb_scan_devices+3e/60>
Trace; d586fc40 <[prism2_usb]prism2_usb_driver+0/38>
Trace; d58200f5 <[usbcore].text.start+95/a0>
Trace; d585dd93 <[prism2_usb]init_module+53/58>
Trace; d586fc40 <[prism2_usb]prism2_usb_driver+0/38>
Trace; d586e288 <[prism2_usb].LC214+448/1d80>
Trace; c01191b6 <sys_init_module+556/5f0>
Trace; d586f834 <[prism2_usb].LC214+19f4/1d80>
Trace; d585b060 <[prism2_usb]prism2wext_get_wireless_stats+0/0>
Trace; c0108a63 <system_call+33/38>
Code; d58212eb <[usbcore]usb_submit_urb+1b/40>
00000000 <_EIP>:
Code; d58212eb <[usbcore]usb_submit_urb+1b/40> <=====
0: 8b 40 18 mov 0x18(%eax),%eax <=====
Code; d58212ee <[usbcore]usb_submit_urb+1e/40>
3: 85 c0 test %eax,%eax
Code; d58212f0 <[usbcore]usb_submit_urb+20/40>
5: 74 06 je d <_EIP+0xd> d58212f8
<[usbcore]usb_submit_urb+28/40>
Code; d58212f2 <[usbcore]usb_submit_urb+22/40>
7: 52 push %edx
Code; d58212f3 <[usbcore]usb_submit_urb+23/40>
8: ff 50 0c call *0xc(%eax)
Code; d58212f6 <[usbcore]usb_submit_urb+26/40>
b: eb 05 jmp 12 <_EIP+0x12> d58212fd
<[usbcore]usb_submit_urb+2d/40>
Code; d58212f8 <[usbcore]usb_submit_urb+28/40>
d: b8 ed ff ff ff mov $0xffffffed,%eax
Code; d58212fd <[usbcore]usb_submit_urb+2d/40>
12: 89 ec mov %ebp,%esp
3 warnings issued. Results may not be reliable.
msg06772/pgp00000.pgp
Description: PGP signature
