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ipn/ipnlocal: fix data race with capForcedNetfilter field

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Updates #cleanup

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I1fdad454198d7ea4a898dbff3062818b0db35167
This commit is contained in:
Andrew Dunham 2023-12-21 21:19:13 -05:00
parent 2716250ee8
commit cae6edf485
1 changed files with 6 additions and 3 deletions

9
ipn/ipnlocal/local.go

@ -4011,10 +4011,13 @@ func (b *LocalBackend) routerConfig(cfg *wgcfg.Config, prefs ipn.PrefsView, oneC
singleRouteThreshold = 1 singleRouteThreshold = 1
} }
netfilterKind := b.capForcedNetfilter b.mu.Lock()
netfilterKind := b.capForcedNetfilter // protected by b.mu
b.mu.Unlock()
if prefs.NetfilterKind() != "" { if prefs.NetfilterKind() != "" {
if b.capForcedNetfilter != "" { if netfilterKind != "" {
b.logf("nodeattr netfilter preference %s overridden by c2n pref %s", b.capForcedNetfilter, prefs.NetfilterKind()) b.logf("nodeattr netfilter preference %s overridden by c2n pref %s", netfilterKind, prefs.NetfilterKind())
} }
netfilterKind = prefs.NetfilterKind() netfilterKind = prefs.NetfilterKind()
} }