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Date:      Thu, 12 Mar 2009 13:42:19 +0000
From:      Bruce Simpson <bms@incunabulum.net>
To:        Thomas Sparrevohn <Thomas.Sparrevohn@btinternet.com>
Cc:        freebsd-current@freebsd.org
Subject:   Re: IGMPv3 hot interface detach panics?
Message-ID:  <49B9113B.8070306@incunabulum.net>
In-Reply-To: <200903121140.53652.Thomas.Sparrevohn@btinternet.com>
References:  <49B885A1.9000907@incunabulum.net>	<20090312043239.GE25538@weongyo.cdnetworks.kr>	<49B89C70.4020504@incunabulum.net> <200903121140.53652.Thomas.Sparrevohn@btinternet.com>

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Thomas Sparrevohn wrote:
> ...
> I am getting a panic as well - but I am not sure its related
>
>   

Looks like inm is NULL at line 1706 in igmp.c

Can you confirm this by inspecting the core dump? i.e.
frame 9
print inm

gcc has inlined the functions at this point. It may be a symptom of a race.
Can you reproduce what the system was doing at the time?

thanks,
BMS




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