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Commit 84b8486e 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_maximum_tries 



[ Upstream commit e799299aafed417cc1f32adccb2a0e5268b3f6d5 ]

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 50093669

net/netrom/af_netrom.c

+1 −1
Original line number Diff line number Diff line
@@ -460,7 +460,7 @@ static int nr_create(struct net *net, struct socket *sock, int protocol, 
	nr->t2     =

		msecs_to_jiffies(sysctl_netrom_transport_acknowledge_delay);

	nr->n2     =

		msecs_to_jiffies(sysctl_netrom_transport_maximum_tries);

		msecs_to_jiffies(READ_ONCE(sysctl_netrom_transport_maximum_tries));

	nr->t4     =

		msecs_to_jiffies(sysctl_netrom_transport_busy_delay);

	nr->idle   =