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-rw-r--r--net/netfilter/nf_tables_api.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index c2f59879a48d..9a080767667b 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -1723,6 +1723,10 @@ static struct nft_hook *nft_netdev_hook_alloc(struct net *net,
}
nla_strlcpy(ifname, attr, IFNAMSIZ);
+ /* nf_tables_netdev_event() is called under rtnl_mutex, this is
+ * indirectly serializing all the other holders of the commit_mutex with
+ * the rtnl_mutex.
+ */
dev = __dev_get_by_name(net, ifname);
if (!dev) {
err = -ENOENT;