diff -Nru systemtap-4.2/debian/changelog systemtap-4.2/debian/changelog
--- systemtap-4.2/debian/changelog	2020-02-17 11:01:11.000000000 +0000
+++ systemtap-4.2/debian/changelog	2022-03-16 20:04:27.000000000 +0000
@@ -1,3 +1,11 @@
+systemtap (4.2-3ubuntu0.1) focal; urgency=medium
+
+  * d/p/dtrace-predictable-tmp-file.patch:
+    Cherry-pick fix from upstream to avoid a race condition due to
+    use of a predictable temporary file name. (LP: #1962785).
+
+ -- dann frazier <dannf@ubuntu.com>  Wed, 16 Mar 2022 14:04:27 -0600
+
 systemtap (4.2-3) unstable; urgency=medium
 
   * autopkgtest: do not assume architecture is amd64
diff -Nru systemtap-4.2/debian/control systemtap-4.2/debian/control
--- systemtap-4.2/debian/control	2020-02-17 10:23:34.000000000 +0000
+++ systemtap-4.2/debian/control	2022-03-16 20:03:19.000000000 +0000
@@ -1,7 +1,8 @@
 Source: systemtap
 Section: devel
 Priority: optional
-Maintainer: Emanuele Rocca <ema@debian.org>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Emanuele Rocca <ema@debian.org>
 Uploaders: Timo Juhani Lindfors <timo.lindfors@iki.fi>,
            Vincent Bernat <bernat@debian.org>,
            Ritesh Raj Sarraf <rrs@debian.org>
diff -Nru systemtap-4.2/debian/patches/dtrace-predictable-tmp-file.patch systemtap-4.2/debian/patches/dtrace-predictable-tmp-file.patch
--- systemtap-4.2/debian/patches/dtrace-predictable-tmp-file.patch	1970-01-01 00:00:00.000000000 +0000
+++ systemtap-4.2/debian/patches/dtrace-predictable-tmp-file.patch	2022-03-16 20:03:19.000000000 +0000
@@ -0,0 +1,39 @@
+Description: dtrace: Use hash-based scheme for predictable file generation
+Origin: upstream, https://sourceware.org/git/?p=systemtap.git;a=commit;h=0de9020c970bceda73e32bbd169c12e7579f21ec
+Author: dann frazier <dann.frazier@canonical.com>
+Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=28923
+Bug-Debian: https://bugs.debian.org/1006703
+Bug-Ubuntu: https://launchpad.net/bugs/1962785
+Last-Updated: 2022-03-16
+
+Index: systemtap/dtrace.in
+===================================================================
+--- systemtap.orig/dtrace.in
++++ systemtap/dtrace.in
+@@ -20,6 +20,7 @@
+ # pylint: disable=R0201
+ # pylint: disable=R0904
+ 
++import hashlib
+ import os
+ import sys
+ from shlex import split
+@@ -410,12 +411,12 @@ def main():
+         else:
+             print("header: " + fname)
+ 
+-        try: # for reproducible-builds purposes, prefer a fixed path name pattern
+-            fname = filename + ".dtrace-temp.c"
+-            fdesc = open(fname, mode='w')
+-        except: # but that doesn't work for  -o /dev/null - see rhbz1504009
+-            (ignore,fname) = mkstemp(suffix=".c")
+-            fdesc = open(fname, mode='w')
++        # for reproducible-builds purposes, use a predictable tmpfile path
++        sha = hashlib.sha256()
++        sha.update(s_filename.encode('utf-8'))
++        sha.update(filename.encode('utf-8'))
++        fname = ".dtrace-temp." + sha.hexdigest()[:8] + ".c"
++        fdesc = open(fname, mode='w')
+         providers.semaphore_write(fdesc)
+         fdesc.close()
+         cc1 = os.environ.get("CC", "gcc")
diff -Nru systemtap-4.2/debian/patches/series systemtap-4.2/debian/patches/series
--- systemtap-4.2/debian/patches/series	2020-02-17 10:03:40.000000000 +0000
+++ systemtap-4.2/debian/patches/series	2022-03-16 20:03:34.000000000 +0000
@@ -7,3 +7,4 @@
 stap-prep.patch
 fallback-comment-gcc-9.diff
 fix-autoconf-stack-trace-strict-prototypes.diff
+dtrace-predictable-tmp-file.patch