ocl: fix kernels launching with USE_HOST_PTR UMat

created from RAW memory buffers (without proper lifetime management)

modules/core/src/ocl.cpp

@@ -2777,6 +2777,7 @@ struct Kernel::Impl
         for( int i = 0; i < MAX_ARRS; i++ )
             u[i] = 0;
         haveTempDstUMats = false;
+        haveTempSrcUMats = false;
     }
 
     void cleanupUMats()
@@ -2793,6 +2794,7 @@ struct Kernel::Impl
             }
         nu = 0;
         haveTempDstUMats = false;
+        haveTempSrcUMats = false;
     }
 
     void addUMat(const UMat& m, bool dst)
@@ -2803,6 +2805,8 @@ struct Kernel::Impl
         nu++;
         if(dst && m.u->tempUMat())
             haveTempDstUMats = true;
+        if(m.u->originalUMatData == NULL && m.u->tempUMat())
+            haveTempSrcUMats = true;  // UMat is created on RAW memory (without proper lifetime management, even from Mat)
     }
 
     void addImage(const Image2D& image)
@@ -2840,6 +2844,7 @@ struct Kernel::Impl
     int nu;
     std::list<Image2D> images;
     bool haveTempDstUMats;
+    bool haveTempSrcUMats;
 };
 
 }} // namespace cv::ocl
@@ -3113,6 +3118,8 @@ bool Kernel::Impl::run(int dims, size_t globalsize[], size_t localsize[],
     cl_command_queue qq = getQueue(q);
     if (haveTempDstUMats)
         sync = true;
+    if (haveTempSrcUMats)
+        sync = true;
     if (timeNS)
         sync = true;
     cl_event asyncEvent = 0;