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-rw-r--r--security/keys/internal.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/security/keys/internal.h b/security/keys/internal.h
index ba3e2da14cef..6d0ca48ae9a5 100644
--- a/security/keys/internal.h
+++ b/security/keys/internal.h
@@ -16,6 +16,8 @@
#include <linux/keyctl.h>
#include <linux/refcount.h>
#include <linux/compat.h>
+#include <linux/mm.h>
+#include <linux/vmalloc.h>
struct iovec;
@@ -349,4 +351,14 @@ static inline void key_check(const struct key *key)
#endif
+/*
+ * Helper function to clear and free a kvmalloc'ed memory object.
+ */
+static inline void __kvzfree(const void *addr, size_t len)
+{
+ if (addr) {
+ memset((void *)addr, 0, len);
+ kvfree(addr);
+ }
+}
#endif /* _INTERNAL_H */