aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--net/netlink/genetlink.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index 874f8ff..409dd40 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -700,6 +700,10 @@ static int ctrl_dumpfamily(struct sk_buff *skb, struct netlink_callback *cb)
struct net *net = sock_net(skb->sk);
int chains_to_skip = cb->args[0];
int fams_to_skip = cb->args[1];
+ bool need_locking = chains_to_skip || fams_to_skip;
+
+ if (need_locking)
+ genl_lock();
for (i = chains_to_skip; i < GENL_FAM_TAB_SIZE; i++) {
n = 0;
@@ -721,6 +725,9 @@ errout:
cb->args[0] = i;
cb->args[1] = n;
+ if (need_locking)
+ genl_unlock();
+
return skb->len;
}