#6 Interface blocking

[Hadmut Danisch]

Hi,

I have a problem with my Cisco aironet 340 card, Linux
2.4.20, and a Dell Inspiron 3800 notebook:

- Sometimes (every few hours) the interface completely
blocks and doesn't receive any traffic anymore. I
never found
a way to make it run again just by software (removing
and
reinstalling kernel modules doesn't help), but simply
pulling
out the card and plugging in again helps.

- Sometimes (every few hours) the interface blocks as
above,
but the keyboard blocks as well and reinstalling the card
also does not help. The kernel and application programs
are still running, the mouse still works. However, since
there is no way to enter commands, the machine needs
a reboot by turning the power off.

I guess that both problems are just symptoms of the same
reason. I guess that there is some interrupt problem.

regards
Hadmut

[Hadmut Danisch]

Logged In: YES
user_id=44878

I found an error message in dmesg after crash:

airo: BAP error 4000 2
Warning: kfree_skb passed an skb still on a list (from
c01206ea).
kernel BUG at skbuff.c:315!
invalid operand: 0000
CPU: 0
EIP: 0010:[<c01cbe44>] Not tainted
EFLAGS: 00013286
eax: 00000045 ebx: cfde31c0 ecx: cc6f2000 edx: 00000001
esi: c12f5f84 edi: 00000000 ebp: c12f4000 esp: c12f5f6c
ds: 0018 es: 0018 ss: 0018
Process keventd (pid: 2, stackpage=c12f5000)
Stack: c0238740 c01206ea 00000000 c12f5f84 c01206ea cfde31c0
cc4002e4 cc4002e4
00000000 00000000 c0128c83 c02489d0 c12f5fb0 00000000
c12f4560 c12f4570
c12f4000 00000001 00000000 c12c9f80 00010000 00000000
00000700 c0128b50
Call Trace: [<c01206ea>] [<c01206ea>] [<c0128c83>]
[<c0128b50>] [<c0105000>]
[<c01074ae>] [<c0128b50>]

Code: 0f 0b 3b 01 5f 79 23 c0 8b 5c 24 14 e9 ce fe ff ff 8d
74 26

So there is probably a severe bug in the aironet driver.
regards
Hadmut