Linux-kernel mailing list archive 2000-32,: Re: ip_conntrack modules still somewhat buggy

# Re: ip_conntrack modules still somewhat buggy

Rusty Russell (rusty@linuxcare.com.au)
Thu, 10 Aug 2000 03:21:36 +1000

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In message <398DAFA3.AC381807@baldauf.org> you write:
> Hello,
>
> from the log below, you can see, that the module ip_conntrack is neither
> loaded nor unloaded. This should never happen, but it does in
> linux-2.4.0-test5. Maybe there are some insmod|rmmod races, because I
> insmod ip_conntrack in my /etc/ppp/ip-up script and I rmmod it in my
> /etc/ppp/ip-down script, and unter rare circumstances, both may be run
> simultaneously.
>
> router|20:27:10|/etc> lsmod
> Module Size Used by
> ip_conntrack 0 0 (deleted)

This means that someone is holding an skb with a reference to a
connection, so ip_conntrack won't unload. This is insoluble with the
current module architecture.

Rusty.

    --
    Hacking time.

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