Re: Memory leak in 2.6.11-rc1?

[Martin Josefsson <gandalf@xxxxxxxxxxxxxx>]

On Thu, 27 Jan 2005, Andrew Morton wrote:

> Russell King <rmk+lkml@xxxxxxxxxxxxxxxx> wrote:
> >
> > This mornings magic numbers are:
> >
> >  3
> >  ip_dst_cache        1292   1485    256   15    1
>
> I just did a q-n-d test here: send one UDP frame to 1.1.1.1 up to
> 1.1.255.255.  The ip_dst_cache grew to ~15k entries and grew no further.
> It's now gradually shrinking.  So there doesn't appear to be a trivial
> bug..
>
> >  Is no one interested in the fact that the DST cache is leaking and
> >  eventually takes out machines?  I've had virtually zero interest in
> >  this problem so far.
>
> I guess we should find a way to make it happen faster.

I could be a refcount problem. I think Russell is using NAT, it could be
the MASQUERADE target if that is in use. A simple test would be to switch
to SNAT and try again if possible.

/Martin