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Thomas Jalsovsky

2002-Dec-04 14:07 UTC

HTB/IMQ troubles (probably)

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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Thomas Jalsovsky

2002-Dec-04 14:23 UTC

head link

Re: HTB/IMQ troubles (probably)

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
>
>
> _______________________________________________
> LARTC mailing list / LARTC@mailman.ds9a.nl
> http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
>
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Razvan Cosma

2002-Dec-05 12:36 UTC

head link

Re: HTB/IMQ troubles (probably)

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Wed, 4 Dec 2002, Thomas Jalsovsky wrote:

.. snip ..>
> 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
>
Same problem here, until I found that one should (must?) use different
IMQ devices for PREROUTING and POSTROUTING.
HTH

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Thomas Jalsovsky

2002-Dec-05 13:01 UTC

head link

Re: HTB/IMQ troubles (probably)

> .. snip ..
> >
> > 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
> >
>
> Same problem here, until I found that one should (must?) use different
> IMQ devices for PREROUTING and POSTROUTING.
> HTHMany, many thanks Razvan!!!
It was the problem. I removed one PRE- or POSTROUTING rule and see the
magic: I can''t reproduce the kernel panic.

So now the question is:
Is it possible to use the SAME IMQ device for ingress and egress trafffic
(as I tryed to use)? If not, why, and if yes how?

Thank you again,
	Thomas

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