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ipn/ipnlocal: avoid calling Start from resetForProfileChangeLockedOnEntry

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During Shutdown of an ephemeral node, we called Logout (to best effort
delete the node earlier), which then called back into
resetForProfileChangeLockedOnEntry, which then tried to Start
again. That's all a waste of work during shutdown and complicates
other cleanups coming later.

Updates #cleanup

Change-Id: I0b8648cac492fc70fa97c4ebef919bbe352c5d7b
Co-authored-by: Maisem Ali <maisem@tailscale.com>
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2023-09-01 10:58:43 -07:00 committed by Brad Fitzpatrick
parent 9cbec4519b
commit 0c1e3ff625
1 changed files with 7 additions and 0 deletions
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7
ipn/ipnlocal/local.go
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@ -4930,6 +4930,13 @@ func (b *LocalBackend) initTKALocked() error {
//
// b.mu must held on entry. It is released on exit.
func (b *LocalBackend) resetForProfileChangeLockedOnEntry() error {
if b.shutdownCalled {
// Prevent a call back to Start during Shutdown, which calls Logout for
// ephemeral nodes, which can then call back here. But we're shutting
// down, so no need to do any work.
b.mu.Unlock()
return nil
}
b.setNetMapLocked(nil) // Reset netmap.
// Reset the NetworkMap in the engine
b.e.SetNetworkMap(new(netmap.NetworkMap))