1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/misc/lkdtm_bugs.c b/drivers/misc/lkdtm_bugs.c
index e3f4cd8876b5..ed4f4c56c796 100644
--- a/drivers/misc/lkdtm_bugs.c
+++ b/drivers/misc/lkdtm_bugs.c
@@ -8,6 +8,8 @@
 #include <linux/list.h>
 #include <linux/refcount.h>
 #include <linux/sched.h>
+#include <linux/sched/signal.h>
+#include <linux/uaccess.h>
 
 struct lkdtm_list {
 	struct list_head node;
@@ -279,3 +281,12 @@ void lkdtm_CORRUPT_LIST_DEL(void)
 	else
 		pr_err("list_del() corruption not detected!\n");
 }
+
+void lkdtm_CORRUPT_USER_DS(void)
+{
+	pr_info("setting bad task size limit\n");
+	set_fs(KERNEL_DS);
+
+	/* Make sure we do not keep running with a KERNEL_DS! */
+	force_sig(SIGKILL, current);
+}