From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH] netfilter: ctnetlink: fix race between delete and timeout expiration Date: Sat, 17 Mar 2012 01:47:39 -0700 (PDT) Message-ID: <20120317.014739.1582874215726456340.davem@davemloft.net> References: <1331899234-3123-1-git-send-email-pablo@netfilter.org> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netfilter-devel@vger.kernel.org, netdev@vger.kernel.org To: pablo@netfilter.org Return-path: In-Reply-To: <1331899234-3123-1-git-send-email-pablo@netfilter.org> Sender: netfilter-devel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: pablo@netfilter.org Date: Fri, 16 Mar 2012 13:00:34 +0100 > From: Pablo Neira Ayuso > > Kerin Millar reported hardlockups while running `conntrackd -c' > in a busy firewall. That system (with several processors) was > acting as backup in a primary-backup setup. > > After several tries, I found a race condition between the deletion > operation of ctnetlink and timeout expiration. This patch fixes > this problem. > > Tested-by: Kerin Millar > Reported-by: Kerin Millar > Signed-off-by: Pablo Neira Ayuso Applied, thanks.