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authorJason Xing <kernelxing@tencent.com>2024-03-04 16:20:44 +0800
committerPaolo Abeni <pabeni@redhat.com>2024-03-07 10:36:58 +0100
commitb5dffcb8f71bdd02a4e5799985b51b12f4eeaf76 (patch)
treeadbaa7a5dfbeb087cd1b24513de9fe2e12146284 /net
parentf99b494b40431f0ca416859f2345746199398e2b (diff)
netrom: Fix a data-race around sysctl_netrom_routing_control
We need to protect the reader reading the sysctl value because the value can be changed concurrently. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Jason Xing <kernelxing@tencent.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'net')
-rw-r--r--net/netrom/nr_route.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/netrom/nr_route.c b/net/netrom/nr_route.c
index b8ddd8048f35..89e12e6eea2e 100644
--- a/net/netrom/nr_route.c
+++ b/net/netrom/nr_route.c
@@ -780,7 +780,7 @@ int nr_route_frame(struct sk_buff *skb, ax25_cb *ax25)
return ret;
}
- if (!sysctl_netrom_routing_control && ax25 != NULL)
+ if (!READ_ONCE(sysctl_netrom_routing_control) && ax25 != NULL)
return 0;
/* Its Time-To-Live has expired */