Michal reported and bisected an issue after recent adoption of skb_attempt_defer_free() in UDP. We had the same issue for TCP, that Sabrina fixed in commit 9b6412e6979f ("tcp: drop secpath at the same time as we currently drop dst") Many thanks to Michal and Sabrina. Fixes: 6471658dc66c ("udp: use skb_attempt_defer_free()") Reported-and-bisected-by: Michal Kubecek Closes: https://lore.kernel.org/netdev/gpjh4lrotyephiqpuldtxxizrsg6job7cvhiqrw72saz2ubs3h@g6fgbvexgl3r/ Signed-off-by: Eric Dumazet Cc: Sabrina Dubroca --- net/ipv4/udp.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 95241093b7f0..3f05ee70029c 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1709,6 +1709,8 @@ int __udp_enqueue_schedule_skb(struct sock *sk, struct sk_buff *skb) int dropcount; int nb = 0; + secpath_reset(skb); + rmem = atomic_read(&sk->sk_rmem_alloc); rcvbuf = READ_ONCE(sk->sk_rcvbuf); size = skb->truesize; -- 2.51.0.788.g6d19910ace-goog