conn: fix getSrcFromControl() iteration

We only expect a single control message in the normal case, but this
would loop infinitely if there were more.

Reviewed-by: Adrian Dewhurst <adrian@tailscale.com>
Signed-off-by: Jordan Whited <jordan@tailscale.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/conn/sticky_linux.go b/conn/sticky_linux.go
index 342e739..278eb19 100644
--- a/conn/sticky_linux.go
+++ b/conn/sticky_linux.go
@@ -25,7 +25,7 @@ func getSrcFromControl(control []byte, ep *StdNetEndpoint) {
 	)
 
 	for len(rem) > unix.SizeofCmsghdr {
-		hdr, data, rem, err = unix.ParseOneSocketControlMessage(control)
+		hdr, data, rem, err = unix.ParseOneSocketControlMessage(rem)
 		if err != nil {
 			return
 		}