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device: use atomic access for unlocked keypair.next

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Go's GC semantics might not always guarantee the safety of this, and the
race detector gets upset too, so instead we wrap this all in atomic
accessors.

Reported-by: David Anderson <danderson@tailscale.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld
2020-05-02 01:30:23 -06:00
parent fdba6c183a
commit 28c4d04304
4 changed files with 23 additions and 11 deletions
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2
device/noise_test.go
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@ -113,7 +113,7 @@ func TestNoiseHandshake(t *testing.T) {
t.Fatal("failed to derive keypair for peer 2", err)
}
key1 := peer1.keypairs.next
key1 := peer1.keypairs.loadNext()
key2 := peer2.keypairs.current
// encrypting / decryption test