test/handshake_helper.c:122: error: NULL_DEREFERENCE
  pointer `ex_data` last assigned on line 103 could be null and is dereferenced at line 122, column 9.
Showing all 40 steps of the trace


test/handshake_helper.c:100:1: start of procedure select_server_ctx()
98.    * An empty SNI extension also returns SSL_TSLEXT_ERR_NOACK.
99.    */
100. > static int select_server_ctx(SSL *s, void *arg, int ignore)
101.   {
102.       const char *servername = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);

test/handshake_helper.c:102:5: 
100.   static int select_server_ctx(SSL *s, void *arg, int ignore)
101.   {
102. >     const char *servername = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
103.       HANDSHAKE_EX_DATA *ex_data =
104.           (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));

ssl/ssl_lib.c:2364:1: start of procedure SSL_get_servername()
  2362.    */
  2363.   
  2364. > const char *SSL_get_servername(const SSL *s, const int type)
  2365.   {
  2366.       if (type != TLSEXT_NAMETYPE_host_name)

ssl/ssl_lib.c:2366:9: Taking false branch
  2364.   const char *SSL_get_servername(const SSL *s, const int type)
  2365.   {
  2366.       if (type != TLSEXT_NAMETYPE_host_name)
                  ^
  2367.           return NULL;
  2368.   

ssl/ssl_lib.c:2369:12: Condition is true
  2367.           return NULL;
  2368.   
  2369.       return s->session && !s->ext.hostname ?
                     ^
  2370.           s->session->ext.hostname : s->ext.hostname;
  2371.   }

ssl/ssl_lib.c:2369:27: Condition is true
  2367.           return NULL;
  2368.   
  2369.       return s->session && !s->ext.hostname ?
                                    ^
  2370.           s->session->ext.hostname : s->ext.hostname;
  2371.   }

ssl/ssl_lib.c:2369:12: 
  2367.           return NULL;
  2368.   
  2369. >     return s->session && !s->ext.hostname ?
  2370.           s->session->ext.hostname : s->ext.hostname;
  2371.   }

ssl/ssl_lib.c:2369:5: 
  2367.           return NULL;
  2368.   
  2369. >     return s->session && !s->ext.hostname ?
  2370.           s->session->ext.hostname : s->ext.hostname;
  2371.   }

ssl/ssl_lib.c:2371:1: return from a call to SSL_get_servername
  2369.       return s->session && !s->ext.hostname ?
  2370.           s->session->ext.hostname : s->ext.hostname;
  2371. > }
  2372.   
  2373.   int SSL_get_servername_type(const SSL *s)

test/handshake_helper.c:103:5: 
101.   {
102.       const char *servername = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
103. >     HANDSHAKE_EX_DATA *ex_data =
104.           (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));
105.   

ssl/ssl_lib.c:3730:1: start of procedure SSL_get_ex_data()
  3728.   }
  3729.   
  3730. > void *SSL_get_ex_data(const SSL *s, int idx)
  3731.   {
  3732.       return (CRYPTO_get_ex_data(&s->ex_data, idx));

ssl/ssl_lib.c:3732:5: 
  3730.   void *SSL_get_ex_data(const SSL *s, int idx)
  3731.   {
  3732. >     return (CRYPTO_get_ex_data(&s->ex_data, idx));
  3733.   }
  3734.   

crypto/ex_data.c:379:1: start of procedure CRYPTO_get_ex_data()
    377.    * particular index in the class used by this variable
    378.    */
    379. > void *CRYPTO_get_ex_data(const CRYPTO_EX_DATA *ad, int idx)
    380.   {
    381.       if (ad->sk == NULL || idx >= sk_void_num(ad->sk))

crypto/ex_data.c:381:9: Taking true branch
    379.   void *CRYPTO_get_ex_data(const CRYPTO_EX_DATA *ad, int idx)
    380.   {
    381.       if (ad->sk == NULL || idx >= sk_void_num(ad->sk))
                   ^
    382.           return NULL;
    383.       return sk_void_value(ad->sk, idx);

crypto/ex_data.c:382:9: 
    380.   {
    381.       if (ad->sk == NULL || idx >= sk_void_num(ad->sk))
    382. >         return NULL;
    383.       return sk_void_value(ad->sk, idx);
    384.   }

crypto/ex_data.c:384:1: return from a call to CRYPTO_get_ex_data
    382.           return NULL;
    383.       return sk_void_value(ad->sk, idx);
    384. > }

ssl/ssl_lib.c:3733:1: return from a call to SSL_get_ex_data
  3731.   {
  3732.       return (CRYPTO_get_ex_data(&s->ex_data, idx));
  3733. > }
  3734.   
  3735.   int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)

test/handshake_helper.c:106:9: Taking false branch
104.           (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));
105.   
106.       if (servername == NULL) {
               ^
107.           ex_data->servername = SSL_TEST_SERVERNAME_SERVER1;
108.           return SSL_TLSEXT_ERR_NOACK;

test/handshake_helper.c:111:9: Taking true branch
109.       }
110.   
111.       if (strcmp(servername, "server2") == 0) {
               ^
112.           SSL_CTX *new_ctx = (SSL_CTX*)arg;
113.           SSL_set_SSL_CTX(s, new_ctx);

test/handshake_helper.c:112:9: 
110.   
111.       if (strcmp(servername, "server2") == 0) {
112. >         SSL_CTX *new_ctx = (SSL_CTX*)arg;
113.           SSL_set_SSL_CTX(s, new_ctx);
114.           /*

test/handshake_helper.c:113:9: 
111.       if (strcmp(servername, "server2") == 0) {
112.           SSL_CTX *new_ctx = (SSL_CTX*)arg;
113. >         SSL_set_SSL_CTX(s, new_ctx);
114.           /*
115.            * Copy over all the SSL_CTX options - reasonable behavior

ssl/ssl_lib.c:3586:1: start of procedure SSL_set_SSL_CTX()
  3584.   }
  3585.   
  3586. > SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
  3587.   {
  3588.       CERT *new_cert;

ssl/ssl_lib.c:3589:9: Taking false branch
  3587.   {
  3588.       CERT *new_cert;
  3589.       if (ssl->ctx == ctx)
                  ^
  3590.           return ssl->ctx;
  3591.       if (ctx == NULL)

ssl/ssl_lib.c:3591:9: Taking false branch
  3589.       if (ssl->ctx == ctx)
  3590.           return ssl->ctx;
  3591.       if (ctx == NULL)
                  ^
  3592.           ctx = ssl->session_ctx;
  3593.       new_cert = ssl_cert_dup(ctx->cert);

ssl/ssl_lib.c:3593:5: Skipping ssl_cert_dup(): empty list of specs
  3591.       if (ctx == NULL)
  3592.           ctx = ssl->session_ctx;
  3593.       new_cert = ssl_cert_dup(ctx->cert);
              ^
  3594.       if (new_cert == NULL) {
  3595.           return NULL;

ssl/ssl_lib.c:3594:9: Taking true branch
  3592.           ctx = ssl->session_ctx;
  3593.       new_cert = ssl_cert_dup(ctx->cert);
  3594.       if (new_cert == NULL) {
                  ^
  3595.           return NULL;
  3596.       }

ssl/ssl_lib.c:3595:9: 
  3593.       new_cert = ssl_cert_dup(ctx->cert);
  3594.       if (new_cert == NULL) {
  3595. >         return NULL;
  3596.       }
  3597.       ssl_cert_free(ssl->cert);

ssl/ssl_lib.c:3624:1: return from a call to SSL_set_SSL_CTX
  3622.   
  3623.       return ssl->ctx;
  3624. > }
  3625.   
  3626.   int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)

test/handshake_helper.c:119:9: 
117.            * contexts differ/conflict
118.            */
119. >         SSL_clear_options(s, 0xFFFFFFFFL);
120.           SSL_set_options(s, SSL_CTX_get_options(new_ctx));
121.   

ssl/ssl_lib.c:4068:1: start of procedure SSL_clear_options()
  4066.   }
  4067.   
  4068. > unsigned long SSL_clear_options(SSL *s, unsigned long op)
  4069.   {
  4070.       return s->options &= ~op;

ssl/ssl_lib.c:4070:5: 
  4068.   unsigned long SSL_clear_options(SSL *s, unsigned long op)
  4069.   {
  4070. >     return s->options &= ~op;
  4071.   }
  4072.   

ssl/ssl_lib.c:4071:1: return from a call to SSL_clear_options
  4069.   {
  4070.       return s->options &= ~op;
  4071. > }
  4072.   
  4073.   STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)

test/handshake_helper.c:120:9: 
118.            */
119.           SSL_clear_options(s, 0xFFFFFFFFL);
120. >         SSL_set_options(s, SSL_CTX_get_options(new_ctx));
121.   
122.           ex_data->servername = SSL_TEST_SERVERNAME_SERVER2;

ssl/ssl_lib.c:4043:1: start of procedure SSL_CTX_get_options()
  4041.    * control interface.
  4042.    */
  4043. > unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
  4044.   {
  4045.       return ctx->options;

ssl/ssl_lib.c:4045:5: 
  4043.   unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
  4044.   {
  4045. >     return ctx->options;
  4046.   }
  4047.   

ssl/ssl_lib.c:4046:1: return from a call to SSL_CTX_get_options
  4044.   {
  4045.       return ctx->options;
  4046. > }
  4047.   
  4048.   unsigned long SSL_get_options(const SSL *s)

ssl/ssl_lib.c:4058:1: start of procedure SSL_set_options()
  4056.   }
  4057.   
  4058. > unsigned long SSL_set_options(SSL *s, unsigned long op)
  4059.   {
  4060.       return s->options |= op;

ssl/ssl_lib.c:4060:5: 
  4058.   unsigned long SSL_set_options(SSL *s, unsigned long op)
  4059.   {
  4060. >     return s->options |= op;
  4061.   }
  4062.   

ssl/ssl_lib.c:4061:1: return from a call to SSL_set_options
  4059.   {
  4060.       return s->options |= op;
  4061. > }
  4062.   
  4063.   unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)

test/handshake_helper.c:122:9: 
120.           SSL_set_options(s, SSL_CTX_get_options(new_ctx));
121.   
122. >         ex_data->servername = SSL_TEST_SERVERNAME_SERVER2;
123.           return SSL_TLSEXT_ERR_OK;
124.       } else if (strcmp(servername, "server1") == 0) {

static int select_server_ctx(SSL *s, void *arg, int ignore)
{
    const char *servername = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
    HANDSHAKE_EX_DATA *ex_data =
        (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));
    if (servername == NULL) {
        ex_data->servername = SSL_TEST_SERVERNAME_SERVER1;
        return SSL_TLSEXT_ERR_NOACK;
    }
    if (strcmp(servername, "server2") == 0) {
        SSL_CTX *new_ctx = (SSL_CTX*)arg;
        SSL_set_SSL_CTX(s, new_ctx);
        SSL_clear_options(s, 0xFFFFFFFFL);
        SSL_set_options(s, SSL_CTX_get_options(new_ctx));
        ex_data->servername = SSL_TEST_SERVERNAME_SERVER2;
        return SSL_TLSEXT_ERR_OK;
    } else if (strcmp(servername, "server1") == 0) {
        ex_data->servername = SSL_TEST_SERVERNAME_SERVER1;
        return SSL_TLSEXT_ERR_OK;
    } else if (ignore) {
        ex_data->servername = SSL_TEST_SERVERNAME_SERVER1;
        return SSL_TLSEXT_ERR_NOACK;
    } else {
        return SSL_TLSEXT_ERR_ALERT_FATAL;
    }
}
['static int select_server_ctx(SSL *s, void *arg, int ignore)\n{\n    const char *servername = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);\n    HANDSHAKE_EX_DATA *ex_data =\n        (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));\n    if (servername == NULL) {\n        ex_data->servername = SSL_TEST_SERVERNAME_SERVER1;\n        return SSL_TLSEXT_ERR_NOACK;\n    }\n    if (strcmp(servername, "server2") == 0) {\n        SSL_CTX *new_ctx = (SSL_CTX*)arg;\n        SSL_set_SSL_CTX(s, new_ctx);\n        SSL_clear_options(s, 0xFFFFFFFFL);\n        SSL_set_options(s, SSL_CTX_get_options(new_ctx));\n        ex_data->servername = SSL_TEST_SERVERNAME_SERVER2;\n        return SSL_TLSEXT_ERR_OK;\n    } else if (strcmp(servername, "server1") == 0) {\n        ex_data->servername = SSL_TEST_SERVERNAME_SERVER1;\n        return SSL_TLSEXT_ERR_OK;\n    } else if (ignore) {\n        ex_data->servername = SSL_TEST_SERVERNAME_SERVER1;\n        return SSL_TLSEXT_ERR_NOACK;\n    } else {\n        return SSL_TLSEXT_ERR_ALERT_FATAL;\n    }\n}', 'const char *SSL_get_servername(const SSL *s, const int type)\n{\n    if (type != TLSEXT_NAMETYPE_host_name)\n        return NULL;\n    return s->session && !s->ext.hostname ?\n        s->session->ext.hostname : s->ext.hostname;\n}', 'void *SSL_get_ex_data(const SSL *s, int idx)\n{\n    return (CRYPTO_get_ex_data(&s->ex_data, idx));\n}', 'void *CRYPTO_get_ex_data(const CRYPTO_EX_DATA *ad, int idx)\n{\n    if (ad->sk == NULL || idx >= sk_void_num(ad->sk))\n        return NULL;\n    return sk_void_value(ad->sk, idx);\n}', 'SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)\n{\n    CERT *new_cert;\n    if (ssl->ctx == ctx)\n        return ssl->ctx;\n    if (ctx == NULL)\n        ctx = ssl->session_ctx;\n    new_cert = ssl_cert_dup(ctx->cert);\n    if (new_cert == NULL) {\n        return NULL;\n    }\n    ssl_cert_free(ssl->cert);\n    ssl->cert = new_cert;\n    OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));\n    if ((ssl->ctx != NULL) &&\n        (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&\n        (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {\n        ssl->sid_ctx_length = ctx->sid_ctx_length;\n        memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));\n    }\n    SSL_CTX_up_ref(ctx);\n    SSL_CTX_free(ssl->ctx);\n    ssl->ctx = ctx;\n    return ssl->ctx;\n}', 'unsigned long SSL_clear_options(SSL *s, unsigned long op)\n{\n    return s->options &= ~op;\n}', 'unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)\n{\n    return ctx->options;\n}', 'unsigned long SSL_set_options(SSL *s, unsigned long op)\n{\n    return s->options |= op;\n}']