aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--crypto/api.c12
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);

Privacy Policy