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SubjectRe: Atmel at76c50x PCMCIA 2.6.6 kernel panic
On 11/05/2004 at 23:41, Andrew Lau wrote:

> My Atmel AT76C502AR_D 802.11b PCMCIA card was previously working fine
> under the 2.6.5 kernel via the atmel/atmel_cs modules. However, since
> upgrading to 2.6.6 I now get a kernel panic whenever I insert my card
[...]
> Call Trace:
> [<c017cf6a>] sysfs_create_link+0x2a/0x13b
> [<c01a672f>] kobject_hotplug+0x55/0x57
> [<c020b792>] class_device_dev_link+0x30/0x34
> [<c020ba59>] class_device_add+0xd9/0x110
> [<d1cf55bc>] fw_register_class_device+0x10f/0x163 [firmware_class]
> [<d1cf563c>] fw_setup_class_device+0x2c/0x111 [firmware_class]
> [<d1cf5788>] request_firmware+0x67/0x160 [firmware_class]
> [<d1d09917>] reset_atmel_card+0x65b/0x6b4 [atmel]
> [<d1d059f6>] atmel_open+0xbf/0x1a5 [atmel]

I get the same oops with a 3com 3CRWE62092B pcmcia wireless card when
inserting it (with 2.6.6, 2.6.5 works fine).

It might be related to this thread: http://lkml.org/lkml/2004/4/23/4 .
I'm not really sure...

Please, let me know if I can provide any additional information to help.

This is the oops I get:

---8<---
NET: Registered protocol family 23
cs: IO port probe 0x0c00-0x0cff: clean.
cs: IO port probe 0x0800-0x08ff: clean.
cs: IO port probe 0x0100-0x04ff: excluding 0x3b8-0x3df
cs: IO port probe 0x0a00-0x0aff: clean.
cs: memory probe 0xa0000000-0xa0ffffff: clean.
eth1: MAC address 00:04:75:ec:37:7d
eth1: Atmel at76c50x wireless. Version 0.96 simon@thekelleys.org.uk
eth1: 3com 3CRWE62092B index 0x01: Vcc 3.3, irq 3, io 0x0100-0x011f
Unable to handle kernel NULL pointer dereference at virtual address 00000000
printing eip:
c016fe42
*pde = 00000000
Oops: 0000 [#1]
CPU: 0
EIP: 0060:[<c016fe42>] Not tainted
EFLAGS: 00010246 (2.6.6)
EIP is at object_path_length+0x1a/0x31
eax: 00000000 ebx: 00000000 ecx: ffffffff edx: e99d0a24
esi: 00000001 edi: 00000000 ebp: ffffffff esp: e5d03d88
ds: 007b es: 007b ss: 0068
Process ifconfig (pid: 3065, threadinfo=e5d02000 task=e6d8f430)
Stack: 00000003 00000000 e99d0a24 e9940aa0 c016fed2 e99d0a24 e9940ab4 e9940aa0
c02053c6 c0335466 e6693ef4 e9940b00 e5bbed90 e9940b00 e9940aa0 c02393a6
e5bbed98 e99d0a24 c03358fd c023966d e5bbed90 e5bbedd8 e9940aec 00000000
Call Trace:
[<c016fed2>] sysfs_create_link+0x2a/0x13b
[<c02053c6>] kobject_hotplug+0x55/0x57
[<c02393a6>] class_device_dev_link+0x30/0x34
[<c023966d>] class_device_add+0xd9/0x110
[<e993f59f>] fw_register_class_device+0x10f/0x163 [firmware_class]
[<e993f61f>] fw_setup_class_device+0x2c/0xe9 [firmware_class]
[<e993f743>] request_firmware+0x67/0x160 [firmware_class]
[<e9989856>] reset_atmel_card+0x65b/0x6b4 [atmel]
[<e99859a6>] atmel_open+0xbf/0x1a5 [atmel]
[<c0113fad>] __wake_up_locked+0x22/0x26
[<c028c0d9>] dev_open+0xcc/0xfb
[<c028d2cd>] dev_change_flags+0x51/0x120
[<c02db18c>] devinet_ioctl+0x235/0x560
[<c02854f6>] sock_ioctl+0x0/0x258
[<c02dd2e7>] inet_ioctl+0x5e/0x9e
[<c02855b6>] sock_ioctl+0xc0/0x258
[<c0152c88>] sys_ioctl+0xb7/0x203
[<c0103a77>] syscall_call+0x7/0xb

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

--
Kiko
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