From a8ffcec127db17b25c9b1fd97b7494ffa06efe45 Mon Sep 17 00:00:00 2001
From: Andrea Mazzoleni <amadvance@gmail.com>
Date: Sun, 16 Aug 2026 21:28:28 +0200
Subject: [PATCH] Accumulate ReadCount and WriteCount into 64-bit count in
 devstat

---
 cmdline/mingwapp.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/cmdline/mingwapp.c b/cmdline/mingwapp.c
index e9c7c56c..dc2ab810 100644
--- a/cmdline/mingwapp.c
+++ b/cmdline/mingwapp.c
@@ -895,7 +895,9 @@ static int devstat(uint64_t device, const char* name, const char* wfile, uint64_
 		return -1;
 	}
 
-	*count = ds.ReadCount + ds.WriteCount;
+	/* accumulate in 64-bit to avoid 32-bit overflow when adding the two DWORD counters */
+	*count = ds.ReadCount;
+	*count += ds.WriteCount;
 
 	return 0;
 }