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| author | Jason Xing <kernelxing@tencent.com> | 2024-03-04 16:20:45 +0800 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2024-03-15 10:48:20 -0400 |
| commit | db364859ce68fb3a52d42cd87a54da3dc42dc1c8 (patch) | |
| tree | 02a269fdcac062171c3f67f020a94c29cda7b67d | |
| parent | d732b83251322ecd3b503e03442247745d6052ce (diff) | |
| download | linux-stable-db364859ce68fb3a52d42cd87a54da3dc42dc1c8.tar.gz linux-stable-db364859ce68fb3a52d42cd87a54da3dc42dc1c8.tar.bz2 linux-stable-db364859ce68fb3a52d42cd87a54da3dc42dc1c8.zip | |
netrom: Fix a data-race around sysctl_netrom_link_fails_count
[ Upstream commit bc76645ebdd01be9b9994dac39685a3d0f6f7985 ]
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 89e12e6eea2e..70480869ad1c 100644 --- a/net/netrom/nr_route.c +++ b/net/netrom/nr_route.c @@ -728,7 +728,7 @@ void nr_link_failed(ax25_cb *ax25, int reason) nr_neigh->ax25 = NULL; ax25_cb_put(ax25); - if (++nr_neigh->failed < sysctl_netrom_link_fails_count) { + if (++nr_neigh->failed < READ_ONCE(sysctl_netrom_link_fails_count)) { nr_neigh_put(nr_neigh); return; } |