1 files changed, 10 insertions, 2 deletions

diff --git a/crypto/api.c b/crypto/api.c
index 2d8d828c0ca2..b4728811ce3b 100644
--- a/crypto/api.c
+++ b/crypto/api.c
@@ -13,6 +13,8 @@
  * any later version.
  *
  */
+
+#include <linux/compiler.h>
 #include <linux/init.h>
 #include <linux/crypto.h>
 #include <linux/errno.h>
@@ -189,8 +191,14 @@ out:
 
 void crypto_free_tfm(struct crypto_tfm *tfm)
 {
-        struct crypto_alg *alg = tfm->__crt_alg;
-        int size = sizeof(*tfm) + alg->cra_ctxsize;
+        struct crypto_alg *alg;
+        int size;
+
+        if (unlikely(!tfm))
+                return;
+
+        alg = tfm->__crt_alg;
+        size = sizeof(*tfm) + alg->cra_ctxsize;
 
         crypto_exit_ops(tfm);
         crypto_alg_put(alg);