Re: [PATCH linux-6.1.y linux-6.6.y linux-6.12.y 0/1] ndisc: backport ndisc_send_redirect() cleanup
From: Sasha Levin <sashal@kernel.org>
Date: 2026-08-25 11:49:43
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On Mon, Aug 24, 2026 at 09:38:51PM +0800, Li Xiasong wrote:
dbc3791e3b24 adds "if (!peer) goto release;" inside rcu_read_lock()/rcu_read_unlock() in ndisc_send_redirect(), which seems to leak the read lock on the NULL-peer path on these trees. This cleanup drops the pair (callers already hold rcu_read_lock()), so the leak would go away.
Correct, and confirmed here - ip6_forward() already wraps the call in rcu_read_lock() on all three trees. Queued for 6.12, 6.6 and 6.1, thanks. -- Thanks, Sasha