savecore: reboot after panic:

[Fratiman Vladut]

Any idea when is planning to implement mask classifiers into pf?
This really help in dummynet, to simplify rules set.

Adrian Penisoara wrote:
> Hi,
>
> On Tue, Mar 4, 2008 at 5:48 PM, Fratiman Vladut <vladone at spaingsm.com>
> wrote:
>
>   
>> With *kgdb* , obtain this:
>> Unread portion of the kernel message buffer:
>> panic: vm_fault: fault on nofault entry, addr: e13d0000
>> cpuid = 0
>> Uptime: 1h8m8s
>> Physical memory: 882 MB
>> Dumping 63 MB: 48 32 16
>>
>> #0  doadump () at pcpu.h:195
>> 195             __asm __volatile("movl %%fs:0,%0" : "=r" (td));
>> (kgdb) Quit
>>     
>
>
> Quite a short stack trace, not sure whether it helps.
>
>
>   
>> I use ipfw with dummynet because can use dynamically rules for shaping.
>> With altq, need to put rule for every host, in order to share bandwith
>> equal to all host in lan. If i have hundredth of host, this can be
>> painful.
>> This is why i use dummynet with ipfw.
>>
>>     
>
> You are probably referring to dummynet's mask classifier. I guess this would
> be a good reason to attempt implementing similar mask classifiers into
> pf(4).
>
> Regards,
> Adrian Penisoara
> ROFUG / EnterpriseBSD
>
>
>   
>> Adrian Penisoara wrote:
>>     
>>> Hi,
>>>
>>> On Mon, Mar 3, 2008 at 10:31 PM, Fratiman Vladut <vladone at spaingsm.com
>>> <mailto:vladone at spaingsm.com>> wrote:
>>>
>>>     Hi!
>>>     I try to implement some load balancing using pf. I use also ipfw for
>>>     traffic shaping.
>>>
>>>
>>> Have you tried to use traffic shaping with ALTQ inside pf ? Perhaps
>>> there is a negative side-effect when combining ipfw and pf this way.
>>>
>>>
>>>
>>>     In pf.conf, my rules are this:
>>>     nat on $ext_if1 from $lan_net to any -> ($ext_if1)
>>>     nat on $ext_if2 from $lan_net to any -> ($ext_if2)
>>>
>>>     pass in on $int_if route-to { ($ext_if1 $ext_gw1), ($ext_if2
>>>     $ext_gw2),
>>>     ($ext_if2 $ext_gw2) } round-robin from $lan_net to any keep state
>>>
>>>     pass out on $ext_if1 route-to ($ext_if2 $ext_gw2) from $ext_if2 to
>>>       
>> any
>>     
>>>     pass out on $ext_if2 route-to ($ext_if1 $ext_gw1) from $ext_if1 to
>>>       
>> any
>>     
>>>     All work fine, but after some time , my system reboot. I found with
>>>     dmesg, this error:
>>>     savecore: reboot after panic: vm_fault: fault on nofault entry,
>>>       
>> addr:
>>     
>>>     e13d0000
>>>     Mar  3 21:29:47 server savecore: reboot after panic: vm_fault:
>>>     fault on
>>>     nofault entry, addr: e13d0000
>>>     savecore: writing core to vmcore.1
>>>
>>>
>>> Have you tried to extract a gdb stack trace from the core file ? See
>>> link below:
>>>
>>>
>>>       
>> http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug-gdb.html
>>     
>>> Regards,
>>> Adrian Penisoara
>>> ROFUG / EnterpriseBSD
>>>       
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>>
>>     
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>