Index: /trunk/src/VBox/Runtime/r3/linux/semmutex-linux.cpp
===================================================================
--- /trunk/src/VBox/Runtime/r3/linux/semmutex-linux.cpp	(revision 25651)
+++ /trunk/src/VBox/Runtime/r3/linux/semmutex-linux.cpp	(revision 25652)
@@ -213,6 +213,6 @@
     {
         ts.tv_sec  = cMillies / 1000;
-        ts.tv_nsec = (cMillies % 1000) * 1000000;
-        u64End = RTTimeSystemNanoTS() + cMillies * 1000000;
+        ts.tv_nsec = (cMillies % 1000) * UINT32_C(1000000);
+        u64End = RTTimeSystemNanoTS() + cMillies * UINT64_C(1000000);
         pTimeout = &ts;
     }
@@ -288,6 +288,6 @@
                     break;
                 }
-                ts.tv_sec  = i64Diff / 1000000000;
-                ts.tv_nsec = i64Diff % 1000000000;
+                ts.tv_sec  = (uint64_t)i64Diff / UINT32_C(1000000000);
+                ts.tv_nsec = (uint64_t)i64Diff % UINT32_C(1000000000);
             }
         }