From 2485a4e2cb4aaee8f1a5e760541fb02e9090de44 Mon Sep 17 00:00:00 2001
From: Ghanan Gowripalan <ghanan@google.com>
Date: Wed, 25 Nov 2020 14:51:18 -0800
Subject: Make stack.Route safe to access concurrently

Multiple goroutines may use the same stack.Route concurrently so
the stack.Route should make sure that any functions called on it
are thread-safe.

Fixes #4073

PiperOrigin-RevId: 344320491
---
 pkg/tcpip/stack/nic.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'pkg/tcpip/stack/nic.go')

diff --git a/pkg/tcpip/stack/nic.go b/pkg/tcpip/stack/nic.go
index 43696ba14..5f3757de0 100644
--- a/pkg/tcpip/stack/nic.go
+++ b/pkg/tcpip/stack/nic.go
@@ -267,7 +267,7 @@ func (n *NIC) WritePacket(r *Route, gso *GSO, protocol tcpip.NetworkProtocolNumb
 	if ch, err := r.Resolve(nil); err != nil {
 		if err == tcpip.ErrWouldBlock {
 			r := r.Clone()
-			n.stack.linkResQueue.enqueue(ch, &r, protocol, pkt)
+			n.stack.linkResQueue.enqueue(ch, r, protocol, pkt)
 			return nil
 		}
 		return err
-- 
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