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fix race from mutex that wasn't held long enough

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This commit is contained in:
Arceliar 2021-09-23 04:35:31 -05:00
parent 529a33034b
commit 86e5306eec
1 changed files with 2 additions and 5 deletions
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7
src/ipv6rwc/ipv6rwc.go
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@ -129,6 +129,7 @@ func (k *keyStore) sendToSubnet(subnet address.Subnet, bs []byte) {
func (k *keyStore) update(key ed25519.PublicKey) *keyInfo {
k.mutex.Lock()
defer k.mutex.Unlock()
var kArray keyArray
copy(kArray[:], key)
var info *keyInfo
@ -140,8 +141,6 @@ func (k *keyStore) update(key ed25519.PublicKey) *keyInfo {
k.keyToInfo[info.key] = info
k.addrToInfo[info.address] = info
k.subnetToInfo[info.subnet] = info
k.resetTimeout(info)
k.mutex.Unlock()
if buf := k.addrBuffer[info.address]; buf != nil {
k.core.WriteTo(buf.packet, iwt.Addr(info.key[:]))
delete(k.addrBuffer, info.address)
@ -150,10 +149,8 @@ func (k *keyStore) update(key ed25519.PublicKey) *keyInfo {
k.core.WriteTo(buf.packet, iwt.Addr(info.key[:]))
delete(k.subnetBuffer, info.subnet)
}
} else {
k.resetTimeout(info)
k.mutex.Unlock()
}
k.resetTimeout(info)
return info
}