From f9d3268dbe3817e25b784b95c25a11822f96632a Mon Sep 17 00:00:00 2001
From: silverwind <me@silverwind.io>
Date: Tue, 15 Sep 2026 21:33:17 +0200
Subject: [PATCH] fix(actions): never show negative running durations (#39322)

---
 models/actions/utils.go      | 2 +-
 models/actions/utils_test.go | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/models/actions/utils.go b/models/actions/utils.go
index 25b6532972b..77c06a94227 100644
--- a/models/actions/utils.go
+++ b/models/actions/utils.go
@@ -87,7 +87,7 @@ func calculateDuration(started, stopped timeutil.TimeStamp, status Status, fallb
 		}
 		return end.AsTime().Sub(s)
 	}
-	return timeSince(s).Truncate(time.Second)
+	return max(timeSince(s), 0).Truncate(time.Second)
 }
 
 // best effort function to convert an action schedule to action run, to be used in GenerateGiteaContext
diff --git a/models/actions/utils_test.go b/models/actions/utils_test.go
index c83173e81ea..4ccffa4c0c0 100644
--- a/models/actions/utils_test.go
+++ b/models/actions/utils_test.go
@@ -73,6 +73,14 @@ func Test_calculateDuration(t *testing.T) {
 			},
 			want: 500 * time.Second,
 		},
+		{
+			name: "running started in the future",
+			args: args{
+				started: 1005,
+				status:  StatusRunning,
+			},
+			want: 0,
+		},
 		{
 			name: "done",
 			args: args{