Date: Tue, 04 Mar 2008 20:36:44 +0200 From: Fratiman Vladut <vladone@spaingsm.com> To: freebsd-ipfw@freebsd.org Subject: Re: savecore: reboot after panic: Message-ID: <47CD96BC.1000709@spaingsm.com> In-Reply-To: <78cb3d3f0803040830t68f4ad54w8b6f021a83d2d03f@mail.gmail.com> References: <47CC602A.7030300@spaingsm.com> <78cb3d3f0803040112j443413e9u1e8b319ab7f2187d@mail.gmail.com> <78cb3d3f0803040119g7bfa060m71ac2b6814bc2937@mail.gmail.com> <47CD6F3B.9060805@spaingsm.com> <78cb3d3f0803040830t68f4ad54w8b6f021a83d2d03f@mail.gmail.com>
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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@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@spaingsm.com
>>> <mailto:vladone@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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