[PATCH RFC bpf-next 1/8] kasan: expose generic kasan helpers

[Alexis Lothoré (eBPF Foundation)]

In order to prepare KASAN helpers to be called from the eBPF subsystem
(to add KASAN instrumentation at runtime when JITing eBPF programs),
expose the __asan_{load,store}X functions in linux/kasan.h

Signed-off-by: Alexis Lothoré (eBPF Foundation) <alexis.lothore@xxxxxxxxxxx>
---
 include/linux/kasan.h | 13 +++++++++++++
 mm/kasan/kasan.h      | 10 ----------
 2 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/include/linux/kasan.h b/include/linux/kasan.h
index 338a1921a50a..6f580d4a39e4 100644
--- a/include/linux/kasan.h
+++ b/include/linux/kasan.h
@@ -710,4 +710,17 @@ void kasan_non_canonical_hook(unsigned long addr);
 static inline void kasan_non_canonical_hook(unsigned long addr) { }
 #endif /* CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS */
 
+#ifdef CONFIG_KASAN_GENERIC
+void __asan_load1(void *p);
+void __asan_store1(void *p);
+void __asan_load2(void *p);
+void __asan_store2(void *p);
+void __asan_load4(void *p);
+void __asan_store4(void *p);
+void __asan_load8(void *p);
+void __asan_store8(void *p);
+void __asan_load16(void *p);
+void __asan_store16(void *p);
+#endif /* CONFIG_KASAN_GENERIC */
+
 #endif /* LINUX_KASAN_H */
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h
index fc9169a54766..3bfce8eb3135 100644
--- a/mm/kasan/kasan.h
+++ b/mm/kasan/kasan.h
@@ -594,16 +594,6 @@ void __asan_handle_no_return(void);
 void __asan_alloca_poison(void *, ssize_t size);
 void __asan_allocas_unpoison(void *stack_top, ssize_t stack_bottom);
 
-void __asan_load1(void *);
-void __asan_store1(void *);
-void __asan_load2(void *);
-void __asan_store2(void *);
-void __asan_load4(void *);
-void __asan_store4(void *);
-void __asan_load8(void *);
-void __asan_store8(void *);
-void __asan_load16(void *);
-void __asan_store16(void *);
 void __asan_loadN(void *, ssize_t size);
 void __asan_storeN(void *, ssize_t size);
 

-- 
2.53.0