diff --git a/SOURCES/rhbz1966742.patch b/SOURCES/rhbz1966742.patch
new file mode 100644
index 0000000..70f0e11
--- /dev/null
+++ b/SOURCES/rhbz1966742.patch
@@ -0,0 +1,23 @@
+commit 87221aeb66e3e3475bf6df77cc7b6338313d0946
+Author: Ding Hui <dinghui@sangfor.com.cn>
+Date:   Fri Nov 27 13:27:34 2020 -0500
+
+    PR26958: avoid null-deref in buildid verification failure diagnostic
+    
+    We can't traverse tsk-> if it's NULL.
+    
+    Tested by <fche> on hand-modified "stap -kp4" stap-symbols.c file.
+
+diff --git a/runtime/sym.c b/runtime/sym.c
+index a51f08c9e..521aebe48 100644
+--- a/runtime/sym.c
++++ b/runtime/sym.c
+@@ -735,7 +735,7 @@ static int _stp_build_id_check (struct _stp_module *m,
+ 	  // we make sure below is really a warning.
+           _stp_warn ("Build-id mismatch [man warning::buildid]: \"%s\" pid %ld address "
+ 		     "%#lx, expected %s actual %s\n",
+-                     m->path, (long) tsk->tgid,
++                     m->path, (long) (tsk ? tsk->tgid : 0),
+                      notes_addr, hexstring_theory, hexstring_practice);
+       return 1;
+   }
diff --git a/SPECS/systemtap.spec b/SPECS/systemtap.spec
index 43a7870..2128e2a 100644
--- a/SPECS/systemtap.spec
+++ b/SPECS/systemtap.spec
@@ -89,7 +89,7 @@
 
 Name: systemtap
 Version: 4.4
-Release: 10%{?release_override}%{?dist}
+Release: 11%{?release_override}%{?dist}
 # for version, see also configure.ac
 
 
@@ -132,6 +132,7 @@ Patch4: rhbz1908904.patch
 Patch5: rhbz1906662.patch
 Patch6: rhbz1650594.patch
 Patch7: rhbz1914948.patch
+Patch8: rhbz1966742.patch
 
 # Build*
 BuildRequires: gcc-c++
@@ -526,6 +527,7 @@ systemtap-runtime-virthost machine to execute systemtap scripts.
 %patch5 -p1
 %patch6 -p1
 %patch7 -p1
+%patch8 -p1
 
 %build
 
@@ -1245,6 +1247,9 @@ done
 
 # PRERELEASE
 %changelog
+* Tue Jun 01 2021 Frank Ch. Eigler <fche@redhat.com> - 4.4-11
+- rhbz1966742 intermittent panic on build-id check failure
+
 * Fri Mar 05 2021 Frank Ch. Eigler <fche@redhat.com> - 4.4-10
 - rhbz1914948 use subbufs better in transport to avoid msg loss