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Commit 50093669 authored by Jason Xing's avatar Jason Xing Committed by Sasha Levin
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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: 1da177e4 ("Linux-2.6.12-rc2")
Signed-off-by: default avatarJason Xing <kernelxing@tencent.com>
Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent acc653e8

net/netrom/af_netrom.c

+1 −1
Original line number Diff line number Diff line
@@ -456,7 +456,7 @@ static int nr_create(struct net *net, struct socket *sock, int protocol, 
	nr_init_timers(sk);



	nr->t1     =

		msecs_to_jiffies(sysctl_netrom_transport_timeout);

		msecs_to_jiffies(READ_ONCE(sysctl_netrom_transport_timeout));

	nr->t2     =

		msecs_to_jiffies(sysctl_netrom_transport_acknowledge_delay);

	nr->n2     =