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libnetwork: processEndpointCreate: Fix deadlock between getSvcRecords and processEndpointCreate 

References https://github.com/moby/moby/pull/42545

Signed-off-by: Steffen Butzer <steffen.butzer@outlook.com>
This commit is contained in:
Steffen Butzer 2021-06-27 11:56:03 +02:00
parent 050929ab83
commit 0c1a125644
1 changed files with 8 additions and 5 deletions
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13
libnetwork/store.go
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@ -340,8 +340,11 @@ func (c *controller) processEndpointCreate(nmap map[string]*netWatch, ep *endpoi
return
}
networkID := n.ID()
endpointID := ep.ID()
c.Lock()
nw, ok := nmap[n.ID()]
nw, ok := nmap[networkID]
c.Unlock()
if ok {
@ -349,12 +352,12 @@ func (c *controller) processEndpointCreate(nmap map[string]*netWatch, ep *endpoi
n.updateSvcRecord(ep, c.getLocalEps(nw), true)
c.Lock()
nw.localEps[ep.ID()] = ep
nw.localEps[endpointID] = ep
// If we had learned that from the kv store remove it
// from remote ep list now that we know that this is
// indeed a local endpoint
delete(nw.remoteEps, ep.ID())
delete(nw.remoteEps, endpointID)
c.Unlock()
return
}
@ -370,8 +373,8 @@ func (c *controller) processEndpointCreate(nmap map[string]*netWatch, ep *endpoi
n.updateSvcRecord(ep, c.getLocalEps(nw), true)
c.Lock()
nw.localEps[ep.ID()] = ep
nmap[n.ID()] = nw
nw.localEps[endpointID] = ep
nmap[networkID] = nw
nw.stopCh = make(chan struct{})
c.Unlock()