diff options
| author | Jason Xing <kernelxing@tencent.com> | 2024-03-04 16:20:44 +0800 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2024-03-15 10:48:20 -0400 |
| commit | d732b83251322ecd3b503e03442247745d6052ce (patch) | |
| tree | 767360dcb951236e7d58fc42f9a1b76c8fd3d1fa | |
| parent | 2309b369fae2d9cdc3c945cd3eaec84eb1958ca3 (diff) | |
| download | linux-d732b83251322ecd3b503e03442247745d6052ce.tar.gz linux-d732b83251322ecd3b503e03442247745d6052ce.tar.bz2 linux-d732b83251322ecd3b503e03442247745d6052ce.zip | |
netrom: Fix a data-race around sysctl_netrom_routing_control
[ Upstream commit b5dffcb8f71bdd02a4e5799985b51b12f4eeaf76 ]
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>
| -rw-r--r-- | net/netrom/nr_route.c | 2 |
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 */ |