[PATCH] kasan: export kasan_poison

[Arnd Bergmann]

From: Arnd Bergmann <arnd@xxxxxxxx>

The unit test module fails to build after adding a reference
to kasan_poison:

ERROR: modpost: "kasan_poison" [lib/test_kasan.ko] undefined!

Export this symbol to make it available to loadable modules.

Fixes: b9b322c2bba9 ("kasan: add match-all tag tests")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
 mm/kasan/shadow.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/kasan/shadow.c b/mm/kasan/shadow.c
index de6b3f074742..32e7a5c148e6 100644
--- a/mm/kasan/shadow.c
+++ b/mm/kasan/shadow.c
@@ -94,6 +94,7 @@ void kasan_poison(const void *address, size_t size, u8 value)
 
 	__memset(shadow_start, value, shadow_end - shadow_start);
 }
+EXPORT_SYMBOL_GPL(kasan_poison);
 
 void kasan_unpoison(const void *address, size_t size)
 {
-- 
2.29.2