hello everybody !
I own a eci hifocus usb adsl modem, on a DFI AK75-EC socket A mobo (KT133A
chipset). I use usb_uhci with 2.4.19-xfs, compiled with gcc 3.2 on athlon-tbird
arch.
I've tried with usb_uhci as module and included same result. As I don't know if
it is due to usb routines ou driver I send a mail to both mailing-lists.
here is part of my /var/log/syslog:
Sep 17 00:35:49 knights-lounge pppd[219]: Child process /usr/local/bin/pppoeci
-v 1 -vpi 8 -vci 35 (pid 32552) terminated with signal 11 
Sep 17 00:35:49 knights-lounge kernel: Unable to handle kernel NULL pointer
dereference at virtual address 000000b8                      
Sep 17 00:35:49 knights-lounge kernel:  printing eip:                          
                                                         
Sep 17 00:35:49 knights-lounge kernel: c02735f8                                
                                                         
Sep 17 00:35:49 knights-lounge kernel: *pde = 00000000                         
                                                         
Sep 17 00:35:49 knights-lounge kernel: Oops: 0000                              
                                                         
Sep 17 00:35:49 knights-lounge kernel: CPU:    0                               
                                                         
Sep 17 00:35:49 knights-lounge kernel: EIP:    0010:[<c02735f8>]    Not tainted
                                                         
Sep 17 00:35:49 knights-lounge kernel: EFLAGS: 00010246                        
                                                         
Sep 17 00:35:49 knights-lounge kernel: eax: 00000000   ebx: cb24c41c   ecx:
00000023   edx: 00000000                                     
Sep 17 00:35:49 knights-lounge kernel: esi: df99cec0   edi: 00000000   ebp:
00000023   esp: c6bdbebc                                     
Sep 17 00:35:49 knights-lounge kernel: ds: 0018   es: 0018   ss: 0018          
                                                         
Sep 17 00:35:49 knights-lounge kernel: Process pppoeci (pid: 32552,
stackpage=c6bdb000)                                                  
Sep 17 00:35:50 knights-lounge kernel: Stack: e08a38b3 00000000 cb24c41c
00000023 00000001 00000000 00000212 df41c500 
Sep 17 00:35:51 knights-lounge kernel:        cb24c400 cb24c400 00000000
d28a76c0 c02741d2 cb24c41c c0279d43 cb24c41c                    
Sep 17 00:35:51 knights-lounge kernel:        000001f0 00000078 04040300
df3b2200 0000000a 00001180 cb24c400 00008800                    
Sep 17 00:35:51 knights-lounge kernel: Call Trace:    [<e08a38b3>] [<c02741d2>]
[<c0279d43>] [<c027a8ef>] [<c014a8ed>]                   
Sep 17 00:35:51 knights-lounge kernel:   [<c014aade>] [<c0108db7>]             
                                                         
Sep 17 00:35:51 knights-lounge kernel:                                         
                                                         
Sep 17 00:35:51 knights-lounge pppd[219]: Couldn't attach to channel 3: No such
device or address                                        
Sep 17 00:35:51 knights-lounge pppd[219]: Couldn't attach to channel 4: No such
device or address                                        
Sep 17 00:35:51 knights-lounge kernel: Code: 8b 82 b8 00 00 00 01 48 2c 8b 44 24
10 85 c0 74 11 8b 82 b8

now here is the output from ksymoops:

Sep 14 20:35:09 knights-lounge kernel: cpu: 0, clocks: 2665987, slice: 1332993
Sep 15 20:04:01 knights-lounge kernel: cpu: 0, clocks: 2665716, slice: 1332858
Sep 17 00:35:49 knights-lounge kernel: Unable to handle kernel NULL pointer
dereference at virtual address 000000b8
Sep 17 00:35:49 knights-lounge kernel: c02735f8
Sep 17 00:35:49 knights-lounge kernel: *pde = 00000000
Sep 17 00:35:49 knights-lounge kernel: Oops: 0000
Sep 17 00:35:49 knights-lounge kernel: CPU:    0
Sep 17 00:35:49 knights-lounge kernel: EIP:    0010:[<c02735f8>]    Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
Sep 17 00:35:49 knights-lounge kernel: EFLAGS: 00010246
Sep 17 00:35:49 knights-lounge kernel: eax: 00000000   ebx: cb24c41c   ecx:
00000023   edx: 00000000
Sep 17 00:35:49 knights-lounge kernel: esi: df99cec0   edi: 00000000   ebp:
00000023   esp: c6bdbebc
Sep 17 00:35:49 knights-lounge kernel: ds: 0018   es: 0018   ss: 0018
Sep 17 00:35:49 knights-lounge kernel: Process pppoeci (pid: 32552,
stackpage=c6bdb000)
Sep 17 00:35:50 knights-lounge kernel: Stack: e08a38b3 00000000 cb24c41c
00000023 00000001 00000000 00000212 df41c500 
Sep 17 00:35:51 knights-lounge kernel:        cb24c400 cb24c400 00000000
d28a76c0 c02741d2 cb24c41c c0279d43 cb24c41c 
Sep 17 00:35:51 knights-lounge kernel:        000001f0 00000078 04040300
df3b2200 0000000a 00001180 cb24c400 00008800 
Sep 17 00:35:51 knights-lounge kernel: Call Trace:    [<e08a38b3>] [<c02741d2>]
[<c0279d43>] [<c027a8ef>] [<c014a8ed>]
Sep 17 00:35:51 knights-lounge kernel:   [<c014aade>] [<c0108db7>]
Sep 17 00:35:51 knights-lounge kernel: Code: 8b 82 b8 00 00 00 01 48 2c 8b 44 24
10 85 c0 74 11 8b 82 b8


>>EIP; c02735f8 <usb_claim_bandwidth+8/40>   <=====

>>ebx; cb24c41c <_end+aeb4104/204e4d68>
>>esi; df99cec0 <_end+1f604ba8/204e4d68>
>>esp; c6bdbebc <_end+6843ba4/204e4d68>

Trace; e08a38b3 <[usb-uhci]uhci_submit_urb+253/390>
Trace; c02741d2 <usb_submit_urb+32/40>
Trace; c0279d43 <proc_submiturb+2f3/5c0>
Trace; c027a8ef <usbdev_ioctl+23f/2b0>
Trace; c014a8ed <file_ioctl+6d/190>
Trace; c014aade <sys_ioctl+ce/230>
Trace; c0108db7 <system_call+33/38>

Code;  c02735f8 <usb_claim_bandwidth+8/40>
00000000 <_EIP>:
Code;  c02735f8 <usb_claim_bandwidth+8/40>   <=====
   0:   8b 82 b8 00 00 00         mov    0xb8(%edx),%eax   <=====
Code;  c02735fe <usb_claim_bandwidth+e/40>
   6:   01 48 2c                  add    %ecx,0x2c(%eax)
Code;  c0273601 <usb_claim_bandwidth+11/40>
   9:   8b 44 24 10               mov    0x10(%esp,1),%eax
Code;  c0273605 <usb_claim_bandwidth+15/40>
   d:   85 c0                     test   %eax,%eax
Code;  c0273607 <usb_claim_bandwidth+17/40>
   f:   74 11                     je     22 <_EIP+0x22> c027361a
<usb_claim_bandwidth+2a/40>
Code;  c0273609 <usb_claim_bandwidth+19/40>
  11:   8b 82 b8 00 00 00         mov    0xb8(%edx),%eax

Sep 17 00:39:09 knights-lounge kernel: cpu: 0, clocks: 2665985, slice: 1332992

1 warning issued.  Results may not be reliable.

that's it. I'd be glad if anyone could help. This problem tends to appear about each 
three days, when connection is lost (each 1440.1 minutes).
btw the way here is part of my kernel conf:
<*> Support for USB
[*]   Preliminary USB device filesystem
<M>   UHCI (Intel PIIX4, VIA, ...) support 
and now part of pppd conf:
(options file)
usepeerdns
noauth
lock
noipdefault

(/etc/peers/adsl)
debug
kdebug 1
noipdefault
defaultroute
pty "/usr/local/bin/pppoeci -v 1 -vpi 8 -vci 35"
sync
noaccomp
nopcomp
noccp
novj
holdoff 10
linkname eciadsl
maxfail 10
usepeerdns
noauth
lcp-echo-interval 0
persist

this is the end. sorry that was a bit wordy. if you have any other question feel
free to mail me. and please, CC me as i'm not suscribed to these MLs.
best regards,
laurent.

--
Low
Up The Irons !

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