Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH 4.19 12/41] netrom: Fix a data-race around sysctl_netrom_default_path_quality | Date | Wed, 13 Mar 2024 13:04:06 -0400 |
| |
From: Jason Xing <kernelxing@tencent.com>
[ Upstream commit 958d6145a6d9ba9e075c921aead8753fb91c9101 ]
We need to protect the reader reading sysctl_netrom_default_path_quality 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> --- 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 53ced34a1fdd2..e3ce3531608c4 100644 --- a/net/netrom/nr_route.c +++ b/net/netrom/nr_route.c @@ -156,7 +156,7 @@ static int __must_check nr_add_node(ax25_address *nr, const char *mnemonic, nr_neigh->digipeat = NULL; nr_neigh->ax25 = NULL; nr_neigh->dev = dev; - nr_neigh->quality = sysctl_netrom_default_path_quality; + nr_neigh->quality = READ_ONCE(sysctl_netrom_default_path_quality); nr_neigh->locked = 0; nr_neigh->count = 0; nr_neigh->number = nr_neigh_no++; -- 2.43.0
| |