diff --git a/cmd/tailscaled/tailscaled.go b/cmd/tailscaled/tailscaled.go
index 45f583300..ce0f46b52 100644
--- a/cmd/tailscaled/tailscaled.go
+++ b/cmd/tailscaled/tailscaled.go
@@ -202,6 +202,10 @@ func main() {
 		}
 	}
 
+	if fd, ok := envknob.LookupInt("TS_PARENT_DEATH_FD"); ok && fd > 2 {
+		go dieOnPipeReadErrorOfFD(fd)
+	}
+
 	if printVersion {
 		fmt.Println(version.String())
 		os.Exit(0)
@@ -769,3 +773,14 @@ func beChild(args []string) error {
 	}
 	return f(args[1:])
 }
+
+// dieOnPipeReadErrorOfFD reads from the pipe named by fd and exit the process
+// when the pipe becomes readable. We use this in tests as a somewhat more
+// portable mechanism for the Linux PR_SET_PDEATHSIG, which we wish existed on
+// macOS. This helps us clean up straggler tailscaled processes when the parent
+// test driver dies unexpectedly.
+func dieOnPipeReadErrorOfFD(fd int) {
+	f := os.NewFile(uintptr(fd), "TS_PARENT_DEATH_FD")
+	f.Read(make([]byte, 1))
+	os.Exit(1)
+}
diff --git a/tstest/integration/integration_test.go b/tstest/integration/integration_test.go
index f7bde738f..5fc17302c 100644
--- a/tstest/integration/integration_test.go
+++ b/tstest/integration/integration_test.go
@@ -934,6 +934,15 @@ func (n *testNode) StartDaemonAsIPNGOOS(ipnGOOS string) *Daemon {
 		cmd.Stdout = os.Stdout
 		cmd.Stderr = io.MultiWriter(cmd.Stderr, os.Stderr)
 	}
+	if runtime.GOOS != "windows" {
+		pr, pw, err := os.Pipe()
+		if err != nil {
+			t.Fatal(err)
+		}
+		t.Cleanup(func() { pw.Close() })
+		cmd.ExtraFiles = append(cmd.ExtraFiles, pr)
+		cmd.Env = append(cmd.Env, "TS_PARENT_DEATH_FD=3")
+	}
 	if err := cmd.Start(); err != nil {
 		t.Fatalf("starting tailscaled: %v", err)
 	}