netdev - Re: [PATCH] netfilter: conntrack: drop expectations before freeing templates

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Message-ID: <aKTCFTQy1dVo-Ucy@strlen.de>
Date: Tue, 19 Aug 2025 20:27:33 +0200
From: Florian Westphal <fw@...len.de>
To: Qingjie Xing <xqjcool@...il.com>
Cc: netfilter-devel@...r.kernel.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH] netfilter: conntrack: drop expectations before freeing
 templates

Qingjie Xing <xqjcool@...il.com> wrote:
> When deleting an xt_CT rule, its per-rule template conntrack is freed via
> nf_ct_destroy() -> nf_ct_tmpl_free(). If an expectation was created with
> that template as its master, 

Uhm.  How can that happen?  A template isn't a connection, so it should
not be able to create an expectation.