Hi,
Just to confirm that after reboot I'm seeing imediately rtfree: %P has 1
refs.
I'll recompile kernel with debug and will try to find out more.
Stefan Lambrev wrote:
quoted text > Hi,
>
> Per olof Ljungmark wrote:
>> Stefan Lambrev wrote:
>>> Hi,
>>>
>>> Sorry to reply to myself, but I found that the problem exist only if
>>> the GW is carp interface, e.g. 10.1.1.1 sits on carp0 on default GW.
>>> I'm still testing how to reproduce this in my test lab and will fill
>>> a PR.
>>>
>>> Stefan Lambrev wrote:
>>>> Hi,
>>>>
>>>> I see rtfree: 0xc741ee88 has 1 refs with freebsd releng_7 (i386)
>>>> from today.
>>>>
>>>> I think it's easy reproducible. What I have is:
>>>>
>>>> releng_7 (10.1.1.2) -> default GW (10.1.1.1)
>>>> on default GW I have route to 10.10.1.1/24 -> 10.1.1.3
>>>>
>>>> so everytime when 10.1.1.2 try to contact someone from 10.10.1.1/24
>>>> I see:
>>>> rtfree: 0xc741ee88 has 1 refs
>>>>
>>>> if I add direct route on 10.1.1.2 to 10.10.1.1/24 through 10.1.1.3
>>>> the message will go away.
>>>>
>>>> Should I ignore this msg for now, or should I expect kernel panic
>>>> soon? :)
>>
>> Just FYI, I see this on a few boxes including the 7-BETA2 I'm writing
>> this on. None of them has a carp interface though. What I find
>> interesting here is that none of them are able to run a SMP kernel
>> without crashing (no panic, they're just frozen completely).
>>
>> Perhaps it is a coincidence, I don't know, but I am very interested
>> in your findings and have testbeds if you need.
>>
>> --per
> In the begging I thought this is very easy reproducible, but it isn't :)
> In my situation the IP of the default GW sits on carp interface (the
> host have nothing to do with carp)
> and when the host receive icmp redirect messages they actually are
> send from the IP of the netwrok card of the GW (not the IP that sits
> on carp0)
> then the host things that those icmp type 5 are spoofed and just
> ignore them and do not add shorter route.
> In this situation after reboot the hosts start to moan about rtfree,
> so I played with routes and settings, added manually routes and now
> when I restore everything to previous state
> I do not see anymore rtfree warnings. So may be once the route is
> created manually and then removed, wrong call of rtfree is not
> triggered anymore.
> I'll reboot the host latter to see if this easy reproducible at least
> on reboot, and if it is, I'll compile debug kernel and will run
> backtrace.
>
> The other thing that bother me is that icmp redirects are not send
> from the carpIP, but from the real interface's IP? Isn't this a bug,
> or it is normal behavior?
>
--
Best Wishes,
Stefan Lambrev
ICQ# 24134177
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