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author | Jason Xing <kernelxing@tencent.com> | 2024-03-04 11:20:44 +0300 |
---|---|---|
committer | Sasha Levin <sashal@kernel.org> | 2024-03-15 17:48:16 +0300 |
commit | c13fbb5902bce848759385986d4833f5b90782c1 (patch) | |
tree | db09261dbf4c7488a481d3b77a545a4a407ec8ad /net | |
parent | 73426c32e259c767d40613b956d5b80d0c28a9a9 (diff) | |
download | linux-c13fbb5902bce848759385986d4833f5b90782c1.tar.xz |
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>
Diffstat (limited to 'net')
-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 929446e246b3..eb285b12977b 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 */ |