netdev - Re: [2.6.36-rc5] INET?: possible irq lock inversion dependency

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Date:	Wed, 22 Sep 2010 10:34:31 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
Cc:	linux-fsdevel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [2.6.36-rc5] INET?: possible irq lock inversion dependency

Le mercredi 22 septembre 2010 à 10:31 +0200, Eric Dumazet a écrit :




> diff --git a/net/core/sock.c b/net/core/sock.c
> index b05b9b6..afd0f69 100644
> --- a/net/core/sock.c
> +++ b/net/core/sock.c
> @@ -1210,7 +1210,9 @@ struct sock *sk_clone(const struct sock *sk, const gfp_t priority)
>  		spin_lock_init(&newsk->sk_dst_lock);
>  		rwlock_init(&newsk->sk_callback_lock);
>  		lockdep_set_class_and_name(&newsk->sk_callback_lock,
> -				af_callback_keys + newsk->sk_family,
> +				sk->sk_prot->callback_key ?
> +					sk->sk_prot->callback_key :
> +					af_callback_keys + newsk->sk_family,
>  				af_family_clock_key_strings[newsk->sk_family]);
>  
>  		newsk->sk_dst_cache	= NULL;
> @@ -1965,6 +1967,9 @@ void sock_init_data(struct socket *sock, struct sock *sk)
>  	spin_lock_init(&sk->sk_dst_lock);
>  	rwlock_init(&sk->sk_callback_lock);
>  	lockdep_set_class_and_name(&sk->sk_callback_lock,
> +			sk->sk_prot->callback_key ?
> +				sk->sk_prot->callback_key :
> +				af_callback_keys + newsk->sk_family,

small bug in my patch , please delete the orphan line :

>  			af_callback_keys + sk->sk_family,


>  			af_family_clock_key_strings[sk->sk_family]);
>  


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