1 files changed, 4 insertions, 1 deletions

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 662b034f1795..4010ae3644f3 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -536,12 +536,15 @@ int tcp_v4_err(struct sk_buff *icmp_skb, u32 info)
                 if (sock_owned_by_user(sk))
                         break;
 
+                skb = tcp_rtx_queue_head(sk);
+                if (WARN_ON_ONCE(!skb))
+                        break;
+
                 icsk->icsk_backoff--;
                 icsk->icsk_rto = tp->srtt_us ? __tcp_set_rto(tp) :
                                                TCP_TIMEOUT_INIT;
                 icsk->icsk_rto = inet_csk_rto_backoff(icsk, TCP_RTO_MAX);
 
-                skb = tcp_rtx_queue_head(sk);
 
                 tcp_mstamp_refresh(tp);
                 delta_us = (u32)(tp->tcp_mstamp - tcp_skb_timestamp_us(skb));