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-rw-r--r--net/core/rtnetlink.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index dfdd08006fae..41eb8bca5305 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1477,13 +1477,15 @@ static int rtnl_fill_link_ifmap(struct sk_buff *skb,
static u32 rtnl_xdp_prog_skb(struct net_device *dev)
{
const struct bpf_prog *generic_xdp_prog;
+ u32 res = 0;
- ASSERT_RTNL();
+ rcu_read_lock();
+ generic_xdp_prog = rcu_dereference(dev->xdp_prog);
+ if (generic_xdp_prog)
+ res = generic_xdp_prog->aux->id;
+ rcu_read_unlock();
- generic_xdp_prog = rtnl_dereference(dev->xdp_prog);
- if (!generic_xdp_prog)
- return 0;
- return generic_xdp_prog->aux->id;
+ return res;
}
static u32 rtnl_xdp_prog_drv(struct net_device *dev)