Commit cfd9f4a7 authored by Jason Xing's avatar Jason Xing Committed by Paolo Abeni
Browse files

netrom: Fix a data-race around sysctl_netrom_obsolescence_count_initialiser 



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>
parent 958d6145

net/netrom/nr_route.c

+1 −1
Original line number Diff line number Diff line
@@ -766,7 +766,7 @@ int nr_route_frame(struct sk_buff *skb, ax25_cb *ax25) 
	if (ax25 != NULL) {

		ret = nr_add_node(nr_src, "", &ax25->dest_addr, ax25->digipeat,

				  ax25->ax25_dev->dev, 0,

				  sysctl_netrom_obsolescence_count_initialiser);

				  READ_ONCE(sysctl_netrom_obsolescence_count_initialiser));

		if (ret)

			return ret;

	}