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-rw-r--r--kernel/fork.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index 0f0bac8318dd..21c6c1e29b98 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -93,6 +93,7 @@
#include <linux/livepatch.h>
#include <linux/thread_info.h>
#include <linux/stackleak.h>
+#include <linux/kasan.h>
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
@@ -223,6 +224,9 @@ static unsigned long *alloc_thread_stack_node(struct task_struct *tsk, int node)
if (!s)
continue;
+ /* Clear the KASAN shadow of the stack. */
+ kasan_unpoison_shadow(s->addr, THREAD_SIZE);
+
/* Clear stale pointers from reused stack. */
memset(s->addr, 0, THREAD_SIZE);