[PATCH] spidernet : fix memory leak in spider_net_stop

[PATCH] spidernet : fix memory leak in spider_net_stop

[Jens Osterkamp]

We forget to call spider_net_free_rx_chain_contents which does the
actual dev_kfree_skb. New skbs are allocated from skbuff_head_cache
on each "ifconfig up" letting the cache grow infinitely.

This patch fixes it.

Signed-off-by: Jens Osterkamp <jens@de.ibm.com>

Index: linux-2.6.20-rc6/drivers/net/spider_net.c
===================================================================
--- linux-2.6.20-rc6.orig/drivers/net/spider_net.c
+++ linux-2.6.20-rc6/drivers/net/spider_net.c
@@ -1925,6 +1925,8 @@ spider_net_stop(struct net_device *netde
 	/* release chains */
 	spider_net_release_tx_chain(card, 1);
 
+	spider_net_free_rx_chain_contents(card);
+
 	spider_net_free_chain(card, &card->tx_chain);
 	spider_net_free_chain(card, &card->rx_chain);
 

Re: [PATCH] spidernet : fix memory leak in spider_net_stop

[Linas Vepstas]

A variant of this patch is queued up for 2.6.21,
as a part of the patch
http://www.mail-archive.com/netdev@vger.kernel.org/msg28213.html

I beleive its in the -mm tree, I have not checked.

--linas

On Thu, Feb 01, 2007 at 12:07:47PM +0100, Jens Osterkamp wrote:
> 
> We forget to call spider_net_free_rx_chain_contents which does the
> actual dev_kfree_skb. New skbs are allocated from skbuff_head_cache
> on each "ifconfig up" letting the cache grow infinitely.
> 
> This patch fixes it.
> 
> Signed-off-by: Jens Osterkamp <jens@de.ibm.com>
> 
> Index: linux-2.6.20-rc6/drivers/net/spider_net.c
> ===================================================================
> --- linux-2.6.20-rc6.orig/drivers/net/spider_net.c
> +++ linux-2.6.20-rc6/drivers/net/spider_net.c
> @@ -1925,6 +1925,8 @@ spider_net_stop(struct net_device *netde
>  	/* release chains */
>  	spider_net_release_tx_chain(card, 1);
>  
> +	spider_net_free_rx_chain_contents(card);
> +
>  	spider_net_free_chain(card, &card->tx_chain);
>  	spider_net_free_chain(card, &card->rx_chain);
>  

Re: [PATCH] spidernet : fix memory leak in spider_net_stop

[Jens Osterkamp]

On Thursday 01 February 2007 6:36 pm, Linas Vepstas wrote:
> 
> A variant of this patch is queued up for 2.6.21,
> as a part of the patch
> http://www.mail-archive.com/netdev@vger.kernel.org/msg28213.html
> 
> I beleive its in the -mm tree, I have not checked.

Ah, good ! I knew that you had several patches in the queue but wasnt aware
of the detailed content.

Jens

Re: [PATCH] spidernet : fix memory leak in spider_net_stop

[Jeff Garzik]

Jens Osterkamp wrote:
> We forget to call spider_net_free_rx_chain_contents which does the
> actual dev_kfree_skb. New skbs are allocated from skbuff_head_cache
> on each "ifconfig up" letting the cache grow infinitely.
> 
> This patch fixes it.
> 
> Signed-off-by: Jens Osterkamp <jens@de.ibm.com>

applied

Re: [PATCH] spidernet : fix memory leak in spider_net_stop

[Ishizaki Kou]

Jeff-san,

> Jens Osterkamp wrote:
> > We forget to call spider_net_free_rx_chain_contents which does the
> > actual dev_kfree_skb. New skbs are allocated from skbuff_head_cache
> > on each "ifconfig up" letting the cache grow infinitely.
> > 
> > This patch fixes it.
> > 
> > Signed-off-by: Jens Osterkamp <jens@de.ibm.com>
> 
> applied

This fix was applied twice to netdev-2.6.git#upstream.
Because Linas-san's patch has been applied to netdev-2.6.git#upstream.

Best regards,
Kou Ishizaki