Hello,
I also got (on the serial console):
Unable to handle kernel NULL pointer dereference at virtual address
0000003c
printing eip:
c020fae0
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c020fae0>] Not tainted
EFLAGS: 00010246
eax: 00000000 ebx: df2335dc ecx: 00000002 edx: e6fc2498
esi: 000005b4 edi: fffffff5 ebp: df2334c0 esp: c02b9ed0
ds: 0018 es: 0018 ss: 0018
Process swapper (pid: 0, stackpage=c02b9000)
Stack: 00000000 c0208f60 df2335dc df2334c0 df2335dc df233518 00000046
c0211c10
df2334c0 00000000 c24f6548 c01e14f1 c24f6548 c02b9f24 00000001
c01e1410
c24e3ac0 df2334c0 0003d39c 00000000 00000046 c0211eb0 df2334c0
c02b9fa8
Call Trace: [<c0208f60>] [<c0211c10>] [<c01e14f1>] [<c01e1410>]
[<c0211eb0>]
[<c0211de0>] [<c012151e>] [<c011d982>] [<c011d896>] [<c011d6d4>]
[<c010a47e>]
[<c0106ea0>] [<c0105000>] [<c010c9d8>] [<c0106ea0>] [<c0106ea0>]
[<c0105000>]
[<c0106ec3>] [<c0106f14>]
Code: 8b 48 3c 89 d0 03 43 54 39 c1 78 14 39 d1 bf f5 ff ff ff 74
<0>Kernel panic: Aiee, killing interrupt handler!
In interrupt handler - not syncing
...probably similar thing has happened before (I didn't have the serial
console, so I don't know).
I didn't find anything useful in messages logfile...
Regards,
Thomas
p.s.: I use gcc-3.2 on Athlon-XP 1700+ with 512M RAM (and again:
linux-2.4.20-ac1 on RedHat 8.0)
On Wed, 4 Dec 2002, Thomas Jalsovsky wrote:
>
> Hello,
>
> I use HTB with linux-2.4.20-ac1 and iptables-1.2.7a (pathced for IMQ).
>
> I configured one HTB qdisc on an IMQ device. This qdisc has some classes
> (about 5) and all of the classes has qdisc pfifo.
>
> I sometimes got out from my linux (while I was working) and I found in
> logs:
>
> Dec 4 11:49:27 core kernel: HTB init, kernel part version 3.7
> Dec 4 11:49:28 core kernel: HTB: quantum of class 10020 is small.
> Consider r2q change.<7>htb*g j=8481720
>
> and once:
> Dec 4 13:47:10 core kernel: eth0: Transmit error, Tx status register 82.
> Dec 4 13:47:10 core kernel: Probably a duplex mismatch. See
> Documentation/networking/vortex.txt
> Dec 4 13:47:10 core kernel: Flags; bus-master 1, dirty 57343(15)
> current 57343(15)
> Dec 4 13:47:10 core kernel: Transmit list 00000000 vs. dec105c0.
> Dec 4 13:47:10 core kernel: 0: @dec10200 length 800005ee status
> 000105ee
> Dec 4 13:47:10 core kernel: 1: @dec10240 length 800005ee status
> 000105ee
> Dec 4 13:47:10 core kernel: 2: @dec10280 length 800005ee status
> 000105ee
> Dec 4 13:47:10 core kernel: 3: @dec102c0 length 800005ee status
> 000105ee
> Dec 4 13:47:10 core kernel: 4: @dec10300 length 800005ee status
> 000105ee
> Dec 4 13:47:10 core kernel: 5: @dec10340 length 800005ee status
> 000105ee
> Dec 4 13:47:10 core kernel: 6: @dec10380 length 800005ee status
> 000105ee
> Dec 4 13:47:10 core kernel: 7: @dec103c0 length 800005ee status
> 000105ee
> Dec 4 13:47:10 core kernel: 8: @dec10400 length 800005ee status
> 000105ee
> Dec 4 13:47:10 core kernel: 9: @dec10440 length 800005ee status
> 000105ee
> Dec 4 13:47:10 core kernel: 10: @dec10480 length 800005ee status
> 000105ee
> Dec 4 13:47:10 core kernel: 11: @dec104c0 length 800005ee status
> 000105ee
> Dec 4 13:47:10 core kernel: 12: @dec10500 length 800005ee status
> 000105ee
> Dec 4 13:47:10 core kernel: 13: @dec10540 length 800005ee status
> 000105ee
> Dec 4 13:47:10 core kernel: 14: @dec10580 length 800005ee status
> 800105ee
> Dec 4 13:47:10 core kernel: 15: @dec105c0 length 800005ee status
> 000105ee
>
> My interfaces:
> eth0 : a VLAN trunk interface
> eth1 : not used yet
> eth2 : my interface the IMQ is attached on (PRE- and POSTROUTING chains).
> 00:0c.0 Ethernet controller: 3Com Corporation 3c905C-TX/TX-M [Tornado]
> (rev 74)
> 00:0d.0 Ethernet controller: 3Com Corporation 3c905C-TX/TX-M [Tornado]
> (rev 78)
> 00:0e.0 Ethernet controller: 3Com Corporation 3c905C-TX/TX-M [Tornado]
> (rev 78)
>
> I tryed to make some download tests and it didn't work and I got out from
> computer (I don't have a monitor connected to the comp. - only a serial
> console port:).
>
> What can I do with that? How can I fix the problem?
>
> Thanks
> Thomas
>
> Queueing discipline statistics:
> -------------------------------
> qdisc pfifo 50: limit 2p
> Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
>
> qdisc pfifo 20: limit 2p
> Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
>
> qdisc pfifo 30: limit 2p
> Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
>
> qdisc pfifo 10: limit 2p
> Sent 896 bytes 10 pkts (dropped 0, overlimits 0)
>
> qdisc pfifo 40: limit 2p
> Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
>
> qdisc pfifo 60: limit 2p
> Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
>
> qdisc htb 1: r2q 10 default 10 direct_packets_stat 0 ver 3.7
> Sent 896 bytes 10 pkts (dropped 0, overlimits 0)
>
>
> Class statistics:
> -------------------
> class htb 1:1 root rate 1920Kbit ceil 1920Kbit burst 4056b/8 mpu 0b cburst
> 4056b/8 mpu 0b level 7
> Sent 1988 bytes 16 pkts (dropped 0, overlimits 0)
> rate 23bps
> lended: 0 borrowed: 0 giants: 0
> tokens: 12963 ctokens: 12963
>
> class htb 1:10 parent 1:1 leaf 10: prio 1 quantum 9011 rate 704Kbit ceil
> 1920Kbit burst 2500b/8 mpu 0b cburst 4056b/8 mpu 0b level 0
> Sent 1988 bytes 16 pkts (dropped 0, overlimits 0)
> rate 23bps
> lended: 16 borrowed: 0 giants: 0
> tokens: 21189 ctokens: 12963
>
> class htb 1:20 parent 1:1 leaf 20: prio 1 quantum 1000 rate 64Kbit ceil
> 64Kbit burst 1680b/8 mpu 0b cburst 1680b/8 mpu 0b level 0
> Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
> lended: 0 borrowed: 0 giants: 0
> tokens: 168099 ctokens: 168099
>
> class htb 1:30 parent 1:1 leaf 30: prio 1 quantum 1638 rate 128Kbit ceil
> 128Kbit burst 1762b/8 mpu 0b cburst 1762b/8 mpu 0b level 0
> Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
> lended: 0 borrowed: 0 giants: 0
> tokens: 88149 ctokens: 88149
>
> class htb 1:40 parent 1:1 leaf 40: prio 1 quantum 1638 rate 128Kbit ceil
> 128Kbit burst 1762b/8 mpu 0b cburst 1762b/8 mpu 0b level 0
> Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
> lended: 0 borrowed: 0 giants: 0
> tokens: 88149 ctokens: 88149
>
> class htb 1:50 parent 1:1 leaf 50: prio 1 quantum 1638 rate 128Kbit ceil
> 128Kbit burst 1762b/8 mpu 0b cburst 1762b/8 mpu 0b level 0
> Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
> lended: 0 borrowed: 0 giants: 0
> tokens: 88149 ctokens: 88149
>
> class htb 1:60 parent 1:1 leaf 60: prio 1 quantum 13107 rate 1Mbit ceil
> 1Mbit burst 2909b/8 mpu 0b cburst 2909b/8 mpu 0b level 0
> Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
> lended: 0 borrowed: 0 giants: 0
> tokens: 18187 ctokens: 18187
>
>
> Filter statistics:
> --------------------
> filter parent 1: protocol ip pref 1 u32
> filter parent 1: protocol ip pref 1 u32 fh 800: ht divisor 1
> filter parent 1: protocol ip pref 1 u32 fh 800::800 order 2048 key ht 800
> bkt 0 flowid 60:
> match c129cb80/ffffff80 at 16
> filter parent 1: protocol ip pref 1 u32 fh 800::801 order 2049 key ht 800
> bkt 0 flowid 40:
> match c129cb2a/ffffffff at 16
> filter parent 1: protocol ip pref 1 u32 fh 800::802 order 2050 key ht 800
> bkt 0 flowid 10:
> match c129cb00/ffffffe0 at 16
> filter parent 1: protocol ip pref 1 u32 fh 800::803 order 2051 key ht 800
> bkt 0 flowid 10:
> match c0a801aa/ffffffff at 16
> filter parent 1: protocol ip pref 1 u32 fh 800::804 order 2052 key ht 800
> bkt 0 flowid 30:
> match c129cb26/ffffffff at 16
> filter parent 1: protocol ip pref 1 u32 fh 800::805 order 2053 key ht 800
> bkt 0 flowid 20:
> match c129cb22/ffffffff at 16
> filter parent 1: protocol ip pref 1 u32 fh 800::806 order 2054 key ht 800
> bkt 0 flowid 50:
> match c129cb2e/ffffffff at 16
>
>
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