commit d4443582479d3ffcf16b3e376db73de9f3f7e25f
author Janos Follath <janos.follath@arm.com> Wed Oct 12 10:00:42 2016 +0100
committer Janos Follath <janos.follath@arm.com> Wed Oct 12 14:31:01 2016 +0100
tree 8f246bde978fac7bdb81b22cedfccb002e204c4a
parent 8abc6b86f98cdfa6bf6788e512a73b1806a442c0

Fix memory leaks in CMAC tests

library/cmac.c

diff --git a/library/cmac.c b/library/cmac.c
index 62f2a6a..ee2fe05 100644
--- a/library/cmac.c
+++ b/library/cmac.c
@@ -737,19 +737,19 @@
         return( MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE );
     }
 
-    mbedtls_cipher_init( &ctx );
-
     for( i = 0; i < num_tests; i++ )
     {
         if( verbose != 0 )
             mbedtls_printf( "  %s CMAC subkey #%u: ", testname, i + 1 );
 
+        mbedtls_cipher_init( &ctx );
+
         if( ( ret = mbedtls_cipher_setup( &ctx, cipher_info ) ) != 0 )
         {
             if( verbose != 0 )
                 mbedtls_printf( "test execution failed\n" );
 
-            goto exit;
+            goto cleanup;
         }
 
         if( ( ret = mbedtls_cipher_setkey( &ctx, key, keybits,
@@ -758,7 +758,7 @@
             if( verbose != 0 )
                 mbedtls_printf( "test execution failed\n" );
 
-            goto exit;
+            goto cleanup;
         }
 
         ret = cmac_generate_subkeys( &ctx, K1, K2 );
@@ -766,7 +766,8 @@
         {
            if( verbose != 0 )
                 mbedtls_printf( "failed\n" );
-            goto exit;
+
+            goto cleanup;
         }
 
         if( ( ret = memcmp( K1, subkeys, block_size ) ) != 0  ||
@@ -774,16 +775,22 @@
         {
             if( verbose != 0 )
                 mbedtls_printf( "failed\n" );
-            goto exit;
+
+            goto cleanup;
         }
 
         if( verbose != 0 )
             mbedtls_printf( "passed\n" );
+
+        mbedtls_cipher_free( &ctx );
     }
 
-exit:
+    goto exit;
+
+cleanup:
     mbedtls_cipher_free( &ctx );
 
+exit:
     return( ret );
 }