From: Evgeniy Polyakov <zbr@ioremap.net>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David Miller <davem@davemloft.net>,
kdakhane@gmail.com, netdev@vger.kernel.org,
netfilter@vger.kernel.org
Subject: Re: [PATCH net-next-2.6] tcp: connect() race with timewait reuse
Date: Thu, 3 Dec 2009 01:15:53 +0300 [thread overview]
Message-ID: <20091202221552.GA17579@ioremap.net> (raw)
In-Reply-To: <4B16830B.4010801@gmail.com>
Hi.
Looks very good, thanks Eric, I have one question.
On Wed, Dec 02, 2009 at 04:08:59PM +0100, Eric Dumazet (eric.dumazet@gmail.com) wrote:
> +
> +/*
> + * unhash a timewait socket from established hash
> + * lock must be hold by caller
> + */
> +void inet_twsk_unhash(struct inet_timewait_sock *tw)
> +{
> + if (hlist_nulls_unhashed(&tw->tw_node))
> + return;
> +
> + hlist_nulls_del_rcu(&tw->tw_node);
> + sk_nulls_node_init(&tw->tw_node);
> + inet_twsk_put(tw);
Is it safe to call in locked context? inet_twsk_put() schedules
preemption, also I did not check what tw destructor does.
--
Evgeniy Polyakov
next prev parent reply other threads:[~2009-12-02 22:15 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-01 2:02 soft lockup in inet_csk_get_port kapil dakhane
2009-12-01 6:10 ` Eric Dumazet
2009-12-03 4:13 ` kapil dakhane
2009-12-01 15:00 ` [PATCH] tcp: Fix a connect() race with timewait sockets Eric Dumazet
2009-12-02 8:59 ` David Miller
2009-12-02 9:23 ` Eric Dumazet
2009-12-02 10:33 ` Eric Dumazet
2009-12-02 11:32 ` Evgeniy Polyakov
2009-12-02 19:18 ` kapil dakhane
2009-12-03 2:43 ` kapil dakhane
2009-12-03 10:49 ` [PATCH] tcp: fix a timewait refcnt race Eric Dumazet
2009-12-04 0:19 ` David Miller
2009-12-04 3:20 ` kapil dakhane
2009-12-04 6:29 ` Eric Dumazet
2009-12-04 6:39 ` David Miller
2009-12-04 6:39 ` David Miller
2009-12-02 15:08 ` [PATCH net-next-2.6] tcp: connect() race with timewait reuse Eric Dumazet
2009-12-02 22:15 ` Evgeniy Polyakov [this message]
2009-12-03 6:44 ` Eric Dumazet
2009-12-03 8:31 ` Eric Dumazet
2009-12-03 23:22 ` Evgeniy Polyakov
2009-12-04 0:18 ` David Miller
2009-12-02 16:05 ` [PATCH] tcp: Fix a connect() race with timewait sockets Ashwani Wason
2009-12-03 6:38 ` David Miller
2009-12-04 13:45 ` [PATCH 0/2] tcp: Fix connect() races " Eric Dumazet
2009-12-04 13:46 ` [PATCH 1/2] tcp: Fix a connect() race " Eric Dumazet
2009-12-05 21:21 ` Evgeniy Polyakov
2009-12-07 9:59 ` [PATCH] tcp: documents timewait refcnt tricks Eric Dumazet
2009-12-07 16:06 ` Randy Dunlap
2009-12-09 4:20 ` David Miller
2009-12-09 4:20 ` David Miller
2009-12-09 4:18 ` [PATCH 1/2] tcp: Fix a connect() race with timewait sockets David Miller
2009-12-04 13:47 ` [PATCH 2/2] " Eric Dumazet
2009-12-09 4:19 ` David Miller
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