linux-kernel - Re: [PATCH nf] netfilter: nf_tables: unconditionally flush pending work before notifier

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Message-Id: <20240703120913.2981-1-hdanton@sina.com>
Date: Wed,  3 Jul 2024 20:09:13 +0800
From: Hillf Danton <hdanton@...a.com>
To: Florian Westphal <fw@...len.de>
Cc: netfilter-devel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org,
	syzkaller-bugs@...glegroups.com,
	syzbot+4fd66a69358fc15ae2ad@...kaller.appspotmail.com
Subject: Re: [PATCH nf] netfilter: nf_tables: unconditionally flush pending work before notifier

On Wed, 3 Jul 2024 12:52:15 +0200 Florian Westphal <fw@...len.de>
> Hillf Danton <hdanton@...a.com> wrote:
> > Given trans->table goes thru the lifespan of trans, your proposal is a bandaid
> > if trans outlives table.
> 
> trans must never outlive table.
> 
What is preventing trans from being freed after closing sock, given
trans is freed in workqueue?

	close sock
	queue work