crypto/rand/rand_lib.c:415: error: NULL_DEREFERENCE
  pointer `meth` last assigned on line 389 could be null and is dereferenced at line 415, column 13.
Showing all 24 steps of the trace


crypto/rand/rand_lib.c:383:1: start of procedure RAND_poll()
381.    * configurable via the --with-rand-seed configure option.
382.    */
383. > int RAND_poll(void)
384.   {
385.       int ret = 0;

crypto/rand/rand_lib.c:385:5: 
383.   int RAND_poll(void)
384.   {
385. >     int ret = 0;
386.   
387.       RAND_POOL *pool = NULL;

crypto/rand/rand_lib.c:387:5: 
385.       int ret = 0;
386.   
387. >     RAND_POOL *pool = NULL;
388.   
389.       const RAND_METHOD *meth = RAND_get_rand_method();

crypto/rand/rand_lib.c:389:5: 
387.       RAND_POOL *pool = NULL;
388.   
389. >     const RAND_METHOD *meth = RAND_get_rand_method();
390.   
391.       if (meth == RAND_OpenSSL()) {

crypto/rand/rand_lib.c:719:1: start of procedure RAND_get_rand_method()
  717.   }
  718.   
  719. > const RAND_METHOD *RAND_get_rand_method(void)
  720.   {
  721.       const RAND_METHOD *tmp_meth = NULL;

crypto/rand/rand_lib.c:721:5: 
  719.   const RAND_METHOD *RAND_get_rand_method(void)
  720.   {
  721. >     const RAND_METHOD *tmp_meth = NULL;
  722.   
  723.       if (!RUN_ONCE(&rand_init, do_rand_init))

crypto/rand/rand_lib.c:723:10: 
  721.       const RAND_METHOD *tmp_meth = NULL;
  722.   
  723. >     if (!RUN_ONCE(&rand_init, do_rand_init))
  724.           return NULL;
  725.   

crypto/threads_pthread.c:111:1: start of procedure CRYPTO_THREAD_run_once()
    109.   }
    110.   
    111. > int CRYPTO_THREAD_run_once(CRYPTO_ONCE *once, void (*init)(void))
    112.   {
    113.       if (pthread_once(once, init) != 0)

crypto/threads_pthread.c:113:9: Taking true branch
    111.   int CRYPTO_THREAD_run_once(CRYPTO_ONCE *once, void (*init)(void))
    112.   {
    113.       if (pthread_once(once, init) != 0)
                   ^
    114.           return 0;
    115.   

crypto/threads_pthread.c:114:9: 
    112.   {
    113.       if (pthread_once(once, init) != 0)
    114. >         return 0;
    115.   
    116.       return 1;

crypto/threads_pthread.c:117:1: return from a call to CRYPTO_THREAD_run_once
    115.   
    116.       return 1;
    117. > }
    118.   
    119.   int CRYPTO_THREAD_init_local(CRYPTO_THREAD_LOCAL *key, void (*cleanup)(void *))

crypto/rand/rand_lib.c:723:10: Condition is false
  721.       const RAND_METHOD *tmp_meth = NULL;
  722.   
  723.       if (!RUN_ONCE(&rand_init, do_rand_init))
                  ^
  724.           return NULL;
  725.   

crypto/rand/rand_lib.c:723:10: Taking true branch
  721.       const RAND_METHOD *tmp_meth = NULL;
  722.   
  723.       if (!RUN_ONCE(&rand_init, do_rand_init))
                  ^
  724.           return NULL;
  725.   

crypto/rand/rand_lib.c:724:9: 
  722.   
  723.       if (!RUN_ONCE(&rand_init, do_rand_init))
  724. >         return NULL;
  725.   
  726.       CRYPTO_THREAD_write_lock(rand_meth_lock);

crypto/rand/rand_lib.c:747:1: return from a call to RAND_get_rand_method
  745.       CRYPTO_THREAD_unlock(rand_meth_lock);
  746.       return tmp_meth;
  747. > }
  748.   
  749.   #ifndef OPENSSL_NO_ENGINE

crypto/rand/rand_lib.c:391:9: 
389.       const RAND_METHOD *meth = RAND_get_rand_method();
390.   
391. >     if (meth == RAND_OpenSSL()) {
392.           /* fill random pool and seed the master DRBG */
393.           RAND_DRBG *drbg = RAND_DRBG_get0_master();

crypto/rand/drbg_lib.c:1212:1: start of procedure RAND_OpenSSL()
  1210.   };
  1211.   
  1212. > RAND_METHOD *RAND_OpenSSL(void)
  1213.   {
  1214.       return &rand_meth;

crypto/rand/drbg_lib.c:1214:5: 
  1212.   RAND_METHOD *RAND_OpenSSL(void)
  1213.   {
  1214. >     return &rand_meth;
  1215.   }

crypto/rand/drbg_lib.c:1215:1: return from a call to RAND_OpenSSL
  1213.   {
  1214.       return &rand_meth;
  1215. > }

crypto/rand/rand_lib.c:391:9: Taking false branch
389.       const RAND_METHOD *meth = RAND_get_rand_method();
390.   
391.       if (meth == RAND_OpenSSL()) {
               ^
392.           /* fill random pool and seed the master DRBG */
393.           RAND_DRBG *drbg = RAND_DRBG_get0_master();

crypto/rand/rand_lib.c:406:9: Skipping rand_pool_new(): empty list of specs
404.       } else {
405.           /* fill random pool and seed the current legacy RNG */
406.           pool = rand_pool_new(RAND_DRBG_STRENGTH,
               ^
407.                                RAND_DRBG_STRENGTH / 8,
408.                                RAND_POOL_MAX_LENGTH);

crypto/rand/rand_lib.c:409:13: Taking false branch
407.                                RAND_DRBG_STRENGTH / 8,
408.                                RAND_POOL_MAX_LENGTH);
409.           if (pool == NULL)
                   ^
410.               return 0;
411.   

crypto/rand/rand_lib.c:412:13: Taking false branch
410.               return 0;
411.   
412.           if (rand_pool_acquire_entropy(pool) == 0)
                   ^
413.               goto err;
414.   

crypto/rand/rand_lib.c:415:13: 
413.               goto err;
414.   
415. >         if (meth->add == NULL
416.               || meth->add(rand_pool_buffer(pool),
417.                            rand_pool_length(pool),
