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From: "Cen Zhang (Microsoft)" <blbllhy@gmail.com>
To: xuanqiang.luo@linux.dev
Cc: AutonomousCodeSecurity@microsoft.com, blbllhy@gmail.com,
	coreteam@netfilter.org, davem@davemloft.net, edumazet@google.com,
	enrico.pozzobon@dissecto.com, fw@strlen.de, horms@kernel.org,
	kadlec@netfilter.org, kees@kernel.org, kuba@kernel.org,
	kys@microsoft.com, linux-kernel@vger.kernel.org,
	netdev@vger.kernel.org, netfilter-devel@vger.kernel.org,
	pabeni@redhat.com, pablo@netfilter.org, phil@nwl.cc,
	sbrivio@redhat.com, tgopinath@linux.microsoft.com, xmei5@asu.edu
Subject: Re: [PATCH net] netfilter: ipset: list:set: defer ip_set_put_byindex to RCU callback
Date: Wed, 19 Aug 2026 23:43:17 -0400	[thread overview]
Message-ID: <20260820034317.79295-1-blbllhy@gmail.com> (raw)
In-Reply-To: <f3093e85-fd58-420b-b435-c39263c46e3c@linux.dev>

Hi Xuanqiang,

Thanks for the review. You're right that this effectively restores the
stale-refcount window fixed by 439cd39ea136. I was aware of that
trade-off, but focused first on preventing the kernel BUG that can be
triggered by an unprivileged user. I agree that the final fix should
address both issues.

I'll rework the fix and send a v2.

Suggestions on the preferred approach are welcome.

Thanks,
Cen

      reply	other threads:[~2026-08-20  3:43 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-20  1:06 [PATCH net] netfilter: ipset: list:set: defer ip_set_put_byindex to RCU callback Cen Zhang (Microsoft)
2026-08-20  3:12 ` luoxuanqiang
2026-08-20  3:43   ` Cen Zhang (Microsoft) [this message]

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