kernel NULL pointer dereference with hostap_cs

[Jeetendra Kumar]

Hi All,
I need your help.
I am using US Robotics IEEE 802.11b PC-CARD. When I start the cardmgr I 
get the following message

Unable to handle kernel NULL pointer dereference at virtual address 00000010
 printing eip:
c0230baa
*pde = 00000000
Oops: 0002
CPU:    0
EIP:    0010:[<c0230baa>]    Not tainted
EFLAGS: 00010246
eax: 00000000   ebx: c72d9000   ecx: c02e9463   edx: c72d9000
esi: c6efe600   edi: 00000000   ebp: 00000000   esp: c6b21ed8
ds: 0018   es: 0018   ss: 0018
Process ip (pid: 912, stackpage=c6b21000)
Stack: 00000000 00000000 ffffffff c116c220 c6efe600 00000001 c0252da0 
c6efe600
       c6efe600 00001002 00001003 c025442f c6efe600 00000000 c6b21f58 
c6efe600
       00000000 c0289234 c6efe600 00001003 c6b21f58 00000000 00000000 
00000000
Call Trace:    [<c0252da0>] [<c025442f>] [<c0289234>] [<c024bed0>] 
[<c014eaa7>]
  [<c01075d3>]

Code: f0 ff 40 10 8b 03 83 48 14 18 8b 4b 08 85 c9 75 2d 8b 83 f4
 <7>wlan0: LinkStatus=1 (Connected)
wlan0: LinkStatus: BSSID=00:0a:e9:00:64:cb

Please note the following:
    1. I am using linux kernel 2.4.20
    2. I am using the cvs version of hostap
    3. The output of dmesg is attached.
    4. ifconfig or iwconfig, or ifup, or service network restart, etc 
all hangs up.
    5. xinetd fails to shutdown.
    6. I get the same error with different version of hostap and kernel. 
(eg hostap-2002-10-12 and kernel 2.4.19).
    7. The card work fine under Windows 2000.

Could any advice me, where am I making mistake or what could be the 
source of error.

Thanks in advance.

------------------------------------
    _    Jeetendra Kumar           |
   ?v?   Alumnus Software Limited  |
  /(_)\  Kolkata, India - 700091   |
   ^ ^   http://www.alumnux.com    |
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