fix-vma-leak.patch

diff --git a/NEWS b/NEWS
index 49baa065e..d866cc250 100644
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,8 @@
 * What's new in version 4.3, 2020-06-11

+- use of the vma tracker leaks kernel slab memory for modern kernels without
+  the old Red Hat utrace patch. this had been a long standing bug.
+
 - tapset functions for reading CPU registers and primitives involved with the
   process memory maps work in 'probe process.begin'.

diff --git a/runtime/vma.c b/runtime/vma.c
index a14851b22..432690bb0 100644
--- a/runtime/vma.c
+++ b/runtime/vma.c
@@ -290,7 +290,9 @@ static int _stp_vma_init(void)
 /* Get rid of the vma tracker (memory). */
 static void _stp_vma_done(void)
 {
-#if defined(CONFIG_UTRACE)
+/* NB HAVE_TASK_FINDER already includes the case of CONFIG_UTRACE.
+ * see runtime/linux/runtime.h for more details */
+#ifdef HAVE_TASK_FINDER
        stap_destroy_vma_map();
 #endif
 }