lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Sat, 27 Nov 2010 10:02:03 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Nagendra Tomar <tomer_iisc@...oo.com>
Cc:	netdev@...r.kernel.org, davem@...emloft.net,
	Evgeniy Polyakov <zbr@...emap.net>
Subject: Re: [PATCH] net-next: Fix __inet_inherit_port() to correctly
 increment bsockets and num_owners

Le vendredi 26 novembre 2010 à 16:26 -0800, Nagendra Tomar a écrit :
> inet sockets corresponding to passive connections are added to the bind hash
> using ___inet_inherit_port(). These sockets are later removed from the bind 
> hash using __inet_put_port(). These two functions are not exactly symmetrical. 
> __inet_put_port() decrements hashinfo->bsockets and tb->num_owners, whereas 
> ___inet_inherit_port() does not increment them. This results in both of these 
> going to -ve values.
> 
> This patch fixes this by calling inet_bind_hash() from ___inet_inherit_port(),
> which does the right thing.
> 
> 'bsockets' and 'num_owners' were introduced by commit a9d8f9110d7e953c 
> (inet: Allowing more than 64k connections and heavily optimize bind(0))
> 
> Signed-off-by: Nagendra Singh Tomar <tomer_iisc@...oo.com>
> 
> ---
> --- linux-2.6.37-rc3/net/ipv4/inet_hashtables.c.orig	2010-11-26 13:28:51.034811940 -0500
> +++ linux-2.6.37-rc3/net/ipv4/inet_hashtables.c	2010-11-26 14:41:41.006268035 -0500
> @@ -133,8 +133,7 @@ int __inet_inherit_port(struct sock *sk,
>  			}
>  		}
>  	}
> -	sk_add_bind_node(child, &tb->owners);
> -	inet_csk(child)->icsk_bind_hash = tb;
> +	inet_bind_hash(child, tb, port);
>  	spin_unlock(&head->lock);
>  
>  	return 0;

Acked-by: Eric Dumazet <eric.dumazet@...il.com>

Thanks !


--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Powered by blists - more mailing lists