| From | Sasha Levin <> | Subject | [PATCH 5.4 14/51] netrom: Fix a data-race around sysctl_netrom_obsolescence_count_initialiser | Date | Wed, 13 Mar 2024 13:01:35 -0400 |
| |
From: Jason Xing <kernelxing@tencent.com>
[ Upstream commit cfd9f4a740f772298308b2e6070d2c744fb5cf79 ]
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> Signed-off-by: Sasha Levin <sashal@kernel.org> --- net/netrom/nr_route.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/netrom/nr_route.c b/net/netrom/nr_route.c index b7be86d41d965..7859217249124 100644 --- a/net/netrom/nr_route.c +++ b/net/netrom/nr_route.c @@ -763,7 +763,7 @@ 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; } -- 2.43.0
|