diff --git a/sys/compat/linuxkpi/common/include/linux/module.h b/sys/compat/linuxkpi/common/include/linux/module.h
--- a/sys/compat/linuxkpi/common/include/linux/module.h
+++ b/sys/compat/linuxkpi/common/include/linux/module.h
@@ -51,7 +51,21 @@
 #define	MODULE_SUPPORTED_DEVICE(name)
 #define	MODULE_IMPORT_NS(_name)
 
-#define	THIS_MODULE	((struct module *)0)
+/*
+ * THIS_MODULE is used to differentiate modules on Linux. We currently
+ * completely stub out any Linux struct module usage, but THIS_MODULE is still
+ * used to populate the "owner" fields of various drivers.  Even though we
+ * don't actually dereference these "owner" fields they are still used by
+ * drivers to check if devices/dmabufs/etc come from different modules. For
+ * example, during DRM GEM import some drivers check if the dmabuf's owner
+ * matches the dev's owner. If they match because they are both NULL drivers
+ * may incorrectly think two resources come from the same module.
+ *
+ * This defines THIS_MODULE to be the filename casted to a struct module.  This
+ * allows us to have differing pointers for every "owner", and we can rely on
+ * the module stubs to never dereference these pointers.
+ */
+#define	THIS_MODULE	((struct module *)__FILE_NAME__)
 
 #define	__MODULE_STRING(x) __stringify(x)