diff -Nru lttng-modules-2.10.8/debian/changelog lttng-modules-2.10.8/debian/changelog
--- lttng-modules-2.10.8/debian/changelog	2020-09-24 14:06:01.000000000 +0000
+++ lttng-modules-2.10.8/debian/changelog	2021-12-07 16:00:39.000000000 +0000
@@ -1,3 +1,11 @@
+lttng-modules (2.10.8-1ubuntu2~18.04.4) bionic; urgency=medium
+
+  * Fix high kernel ABI numbers overflowing version check macros
+    (LP: #1953522)
+    - d/p/0016-fix-ubuntu-kernel-version.patch
+
+ -- Stefan Bader <stefan.bader@canonical.com>  Tue, 07 Dec 2021 17:00:39 +0100
+
 lttng-modules (2.10.8-1ubuntu2~18.04.3) bionic; urgency=medium
 
   * Fix writeback_queue_io() modification (LP: #1896781):
diff -Nru lttng-modules-2.10.8/debian/patches/0016-fix-ubuntu-kernel-version.patch lttng-modules-2.10.8/debian/patches/0016-fix-ubuntu-kernel-version.patch
--- lttng-modules-2.10.8/debian/patches/0016-fix-ubuntu-kernel-version.patch	1970-01-01 00:00:00.000000000 +0000
+++ lttng-modules-2.10.8/debian/patches/0016-fix-ubuntu-kernel-version.patch	2021-12-07 16:00:33.000000000 +0000
@@ -0,0 +1,31 @@
+Description: Fix Ubuntu version macros with high sublevel numbers
+ A stable patch tries to fix an overflow caused by sublevel numbers
+ greater than 255. This triggered an existing bug in the way lttng
+ makes Ubuntu versions by shifting the Linux versions by another 8
+ bits and then add the ABI number. But for derivatives we use numbers
+ greater than 1000 which already overflows into sublevel. With sub-
+ level being the max we even overflow into the minor number which is
+ fatal.
+Author: Stefan Bader <stefan.bader@canonical.com>
+UbuntuBug: https://bugs.launchpad.net/bugs/1953522
+Upstream: no
+Last-Updated: 2021-12-07
+
+Index: lttng-modules-2.10.8/lttng-kernel-version.h
+===================================================================
+--- lttng-modules-2.10.8.orig/lttng-kernel-version.h
++++ lttng-modules-2.10.8/lttng-kernel-version.h
+@@ -42,11 +42,11 @@
+ /* Ubuntu */
+ 
+ #define LTTNG_UBUNTU_KERNEL_VERSION(a, b, c, d) \
+-	(((a) << 24) + ((b) << 16) + ((c) << 8) + (d))
++	(((a) << 32) + ((b) << 24) + ((c) << 16) + (d))
+ 
+ #ifdef UTS_UBUNTU_RELEASE_ABI
+ #define LTTNG_UBUNTU_VERSION_CODE \
+-	((LINUX_VERSION_CODE << 8) + UTS_UBUNTU_RELEASE_ABI)
++	((LINUX_VERSION_CODE << 16) + UTS_UBUNTU_RELEASE_ABI)
+ #else
+ #define LTTNG_UBUNTU_VERSION_CODE 	0
+ #endif
diff -Nru lttng-modules-2.10.8/debian/patches/series lttng-modules-2.10.8/debian/patches/series
--- lttng-modules-2.10.8/debian/patches/series	2020-09-24 14:06:01.000000000 +0000
+++ lttng-modules-2.10.8/debian/patches/series	2021-12-07 15:28:09.000000000 +0000
@@ -20,3 +20,4 @@
 compat-5.6/0004-Update-Use-vmalloc_sync_mappings-for-stable-kernels.patch
 compat-5.6/0005-Update-Use-vmalloc_sync_mappings-for-ubuntu.patch
 compat-5.9/0001-fix-writeback-queue-io.patch
+0016-fix-ubuntu-kernel-version.patch