netrom: Fix a data-race around sysctl_netrom_transport_timeout
[ Upstream commit 60a7a152abd494ed4f69098cf0f322e6bb140612 ]
We need to protect the reader reading the sysctl value because the
value can be changed concurrently.
Fixes: 1da177e4c3
("Linux-2.6.12-rc2")
Signed-off-by: Jason Xing <kernelxing@tencent.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
@@ -453,7 +453,7 @@ static int nr_create(struct net *net, struct socket *sock, int protocol,
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nr_init_timers(sk);
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nr_init_timers(sk);
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nr->t1 =
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nr->t1 =
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msecs_to_jiffies(sysctl_netrom_transport_timeout);
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msecs_to_jiffies(READ_ONCE(sysctl_netrom_transport_timeout));
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nr->t2 =
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nr->t2 =
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msecs_to_jiffies(sysctl_netrom_transport_acknowledge_delay);
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msecs_to_jiffies(sysctl_netrom_transport_acknowledge_delay);
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nr->n2 =
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nr->n2 =
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