[PATCH net 02/12] netrom: Fix a data-race around sysctl_netrom_obsolescence_count_initialiser
From: Jason Xing <hidden>
Date: 2024-03-04 08:20:59
Also in:
linux-hams
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Jason Xing <kernelxing@tencent.com>
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>
---
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 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; }
--
2.37.3