Date: Thu, 12 Mar 2009 09:17:19 -0700 From: Sam Leffler <sam@freebsd.org> To: Bruce Simpson <bms@incunabulum.net> Cc: Thomas Sparrevohn <Thomas.Sparrevohn@btinternet.com>, freebsd-current@freebsd.org Subject: Re: IGMPv3 hot interface detach panics? Message-ID: <49B9358F.9060805@freebsd.org> In-Reply-To: <49B9113B.8070306@incunabulum.net> References: <49B885A1.9000907@incunabulum.net> <20090312043239.GE25538@weongyo.cdnetworks.kr> <49B89C70.4020504@incunabulum.net> <200903121140.53652.Thomas.Sparrevohn@btinternet.com> <49B9113B.8070306@incunabulum.net>
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Bruce Simpson wrote:
> 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?
It's the same panic I hit and not a race. I caught it just
single-stepping through a normal net80211 vap teardown on device eject.
Not sure I'll have time to look at it today.
Sam
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