D44306.id135613.diff
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	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)