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| author | Jason Xing <kernelxing@tencent.com> | 2024-03-04 16:20:44 +0800 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2024-03-15 10:48:17 -0400 |
| commit | b7d33e083f9d5d39445c0a91e7ad4f3e2c47fcb5 (patch) | |
| tree | cede4df741da88bdda5dd633338727e53d6a41cd | |
| parent | 01d4e3afe257768cd2a45f15a0e57bacf932b140 (diff) | |
| download | linux-b7d33e083f9d5d39445c0a91e7ad4f3e2c47fcb5.tar.gz linux-b7d33e083f9d5d39445c0a91e7ad4f3e2c47fcb5.tar.bz2 linux-b7d33e083f9d5d39445c0a91e7ad4f3e2c47fcb5.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 8a5375e1dcc7..88c59bd0f739 100644 --- a/net/netrom/nr_route.c +++ b/net/netrom/nr_route.c @@ -777,7 +777,7 @@ 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 */ |