diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 956bea9..ccf1ef4 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -964,6 +964,13 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it,
 	 */
 	skb->ooo_okay = sk_wmem_alloc_get(sk) < SKB_TRUESIZE(1);
 
+	/* If we had to use memory reserve to allocate this skb,
+	 * this might cause drops if packet is looped back :
+	 * Other socket might not have SOCK_MEMALLOC.
+	 * Packets not looped back do not care about pfmemalloc.
+	 */
+	skb->pfmemalloc = 0;
+
 	skb_push(skb, tcp_header_size);
 	skb_reset_transport_header(skb);