Merge remote-tracking branch 'crypto/master'

1 files changed, 20 insertions, 4 deletions

diff --git a/net/core/sock.c b/net/core/sock.c
index 9a56b2000c3f..1c7a33db1314 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1731,18 +1731,34 @@ void *sock_kmalloc(struct sock *sk, int size, gfp_t priority)
 }
 EXPORT_SYMBOL(sock_kmalloc);
 
-/*
- * Free an option memory block.
+/* Free an option memory block. Note, we actually want the inline
+ * here as this allows gcc to detect the nullify and fold away the
+ * condition entirely.
  */
-void sock_kfree_s(struct sock *sk, void *mem, int size)
+static inline void __sock_kfree_s(struct sock *sk, void *mem, int size,
+				  const bool nullify)
 {
 	if (WARN_ON_ONCE(!mem))
 		return;
-	kfree(mem);
+	if (nullify)
+		kzfree(mem);
+	else
+		kfree(mem);
 	atomic_sub(size, &sk->sk_omem_alloc);
 }
+
+void sock_kfree_s(struct sock *sk, void *mem, int size)
+{
+	__sock_kfree_s(sk, mem, size, false);
+}
 EXPORT_SYMBOL(sock_kfree_s);
 
+void sock_kzfree_s(struct sock *sk, void *mem, int size)
+{
+	__sock_kfree_s(sk, mem, size, true);
+}
+EXPORT_SYMBOL(sock_kzfree_s);
+
 /* It is almost wait_for_tcp_memory minus release_sock/lock_sock.
    I think, these locks should be removed for datagram sockets.
  */