diff options
| -rw-r--r-- | pkg/tcpip/stack/nic.go | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/pkg/tcpip/stack/nic.go b/pkg/tcpip/stack/nic.go index 43d7c2ec4..a6b04faaf 100644 --- a/pkg/tcpip/stack/nic.go +++ b/pkg/tcpip/stack/nic.go @@ -403,14 +403,19 @@ func (n *NIC) DeliverNetworkPacket(linkEP LinkEndpoint, remote, _ tcpip.LinkAddr // route to each IPv4 network endpoint and let each endpoint handle the // packet. if dst == header.IPv4Broadcast { + // n.endpoints is mutex protected so acquire lock. + n.mu.RLock() for _, ref := range n.endpoints { + n.mu.RUnlock() if ref.protocol == header.IPv4ProtocolNumber && ref.tryIncRef() { r := makeRoute(protocol, dst, src, linkEP.LinkAddress(), ref) r.RemoteLinkAddress = remote ref.ep.HandlePacket(&r, vv) ref.decRef() } + n.mu.RLock() } + n.mu.RUnlock() return } |