Re: Sock leak in net/ipv4/af_inet.c - 2.4.26

From: Dan A. Dickey
Date: Tue May 11 2004 - 12:31:57 EST

On Tuesday 11 May 2004 11:43, Marc-Christian Petersen wrote:
> On Tuesday 11 May 2004 18:24, Dickey, Dan wrote:
> Hi Dan,
> > I've found a leak in af_inet.c, routine inet_create().
> > It allocates from the sock slab using sk_alloc(), but
> > sk_free() is never called on these sock structs.
> > I'm not that familiar with the af_inet code, but I'll
> > continue taking a look at it to try and determine where
> > the missing sk_free() is supposed to be.
> > If either of you or anyone else has an idea, please
> > let me know. We have several 2GB mem systems that need
> > to be rebooted every few days because of this problem.
> > Oh - by the way, it looks like this is happening in
> > net/ipv4/tcp_minisocks.c as well. Routine tcp_create_openreq_child().
> > There is no corresponding sk_free() call for the sk_alloc() in here.
> > In order to track these down, I've added some simple debug code
> > around the sk_alloc/sk_free calls to track allocations. I know
> > where the leaky sock structs are being allocated from, but not
> > where they should be freed.
> am I silly or do I see lots of sk_free(sk); in there?
> ciao, Marc

there are zero sk_free() calls in tcp_minisocks.c and
three in af_inet.c. Go take another look.
Remember - 2.4.26 sources.

Dan A. Dickey
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