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Ziyang Xuan a575908cb3 netfilter: nfnetlink: fix potential dead lock in nfnetlink_rcv_msg()
[ Upstream commit 03832a32bf ]

When type is NFNL_CB_MUTEX and -EAGAIN error occur in nfnetlink_rcv_msg(),
it does not execute nfnl_unlock(). That would trigger potential dead lock.

Fixes: 50f2db9e36 ("netfilter: nfnetlink: consolidate callback types")
Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-04-19 17:56:10 +08:00
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