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authorJason Xing <kernelxing@tencent.com>2024-03-04 16:20:36 +0800
committerPaolo Abeni <pabeni@redhat.com>2024-03-07 10:36:58 +0100
commitcfd9f4a740f772298308b2e6070d2c744fb5cf79 (patch)
treebf9fd4fb898823330549aff54b03b8bf8700f2ee /net/netrom
parent958d6145a6d9ba9e075c921aead8753fb91c9101 (diff)
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: 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/netrom')
-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 6f709fdffc11..b8ddd8048f35 100644
--- a/net/netrom/nr_route.c
+++ b/net/netrom/nr_route.c
@@ -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;
}