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wgengine/magicsock: close disco listeners on Conn.Close, fix Linux root TestNewConn

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TestNewConn now passes as root on Linux. It wasn't closing the BPF
listeners and their goroutines.

The code is still a mess of two Close overlapping code paths, but that
can be refactored later. For now, make the two close paths more similar.

Updates #9945

Change-Id: I8a3cf5fb04d22ba29094243b8e645de293d9ed85
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2023-10-23 19:07:24 -07:00 committed by Brad Fitzpatrick
parent 593c086866
commit 514539b611
1 changed files with 6 additions and 0 deletions
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6
wgengine/magicsock/magicsock.go
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@ -2134,6 +2134,12 @@ func (c *Conn) Close() error {
// They will frequently have been closed already by a call to connBind.Close.
c.pconn6.Close()
c.pconn4.Close()
if c.closeDisco4 != nil {
c.closeDisco4.Close()
}
if c.closeDisco6 != nil {
c.closeDisco6.Close()
}
// Wait on goroutines updating right at the end, once everything is
// already closed. We want everything else in the Conn to be