From cc370314e79d01ea1992da7aa651496a48d6a432 Mon Sep 17 00:00:00 2001
From: Brad Fitzpatrick <bradfitz@tailscale.com>
Date: Thu, 1 Aug 2024 08:01:21 -0700
Subject: [PATCH] health: don't show login error details with context
 cancelations

Fixes #12991

Change-Id: I2a5e109395761b720ecf1069d0167cf0caf72876
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
---
 health/health.go | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/health/health.go b/health/health.go
index f1fe8eccb..fa608420e 100644
--- a/health/health.go
+++ b/health/health.go
@@ -6,6 +6,7 @@
 package health
 
 import (
+	"context"
 	"errors"
 	"fmt"
 	"maps"
@@ -987,8 +988,12 @@ func (t *Tracker) updateBuiltinWarnablesLocked() {
 	}
 
 	if t.lastLoginErr != nil {
+		var errMsg string
+		if !errors.Is(t.lastLoginErr, context.Canceled) {
+			errMsg = t.lastLoginErr.Error()
+		}
 		t.setUnhealthyLocked(LoginStateWarnable, Args{
-			ArgError: t.lastLoginErr.Error(),
+			ArgError: errMsg,
 		})
 		return
 	} else {