crypto/rand/rand_lib.c:414: error: NULL_DEREFERENCE
  pointer `meth` last assigned on line 388 could be null and is dereferenced at line 414, column 13.
Showing all 24 steps of the trace


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

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

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

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

crypto/rand/rand_lib.c:738:1: start of procedure RAND_get_rand_method()
  736.   }
  737.   
  738. > const RAND_METHOD *RAND_get_rand_method(void)
  739.   {
  740.       const RAND_METHOD *tmp_meth = NULL;

crypto/rand/rand_lib.c:740:5: 
  738.   const RAND_METHOD *RAND_get_rand_method(void)
  739.   {
  740. >     const RAND_METHOD *tmp_meth = NULL;
  741.   
  742.       if (!RUN_ONCE(&rand_init, do_rand_init))

crypto/rand/rand_lib.c:742:10: 
  740.       const RAND_METHOD *tmp_meth = NULL;
  741.   
  742. >     if (!RUN_ONCE(&rand_init, do_rand_init))
  743.           return NULL;
  744.   

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:742:10: Condition is false
  740.       const RAND_METHOD *tmp_meth = NULL;
  741.   
  742.       if (!RUN_ONCE(&rand_init, do_rand_init))
                  ^
  743.           return NULL;
  744.   

crypto/rand/rand_lib.c:742:10: Taking true branch
  740.       const RAND_METHOD *tmp_meth = NULL;
  741.   
  742.       if (!RUN_ONCE(&rand_init, do_rand_init))
                  ^
  743.           return NULL;
  744.   

crypto/rand/rand_lib.c:743:9: 
  741.   
  742.       if (!RUN_ONCE(&rand_init, do_rand_init))
  743. >         return NULL;
  744.   
  745.       CRYPTO_THREAD_write_lock(rand_meth_lock);

crypto/rand/rand_lib.c:766:1: return from a call to RAND_get_rand_method
  764.       CRYPTO_THREAD_unlock(rand_meth_lock);
  765.       return tmp_meth;
  766. > }
  767.   
  768.   #ifndef OPENSSL_NO_ENGINE

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

crypto/rand/drbg_lib.c:1227:1: start of procedure RAND_OpenSSL()
  1225.   };
  1226.   
  1227. > RAND_METHOD *RAND_OpenSSL(void)
  1228.   {
  1229.       return &rand_meth;

crypto/rand/drbg_lib.c:1229:5: 
  1227.   RAND_METHOD *RAND_OpenSSL(void)
  1228.   {
  1229. >     return &rand_meth;
  1230.   }

crypto/rand/drbg_lib.c:1230:1: return from a call to RAND_OpenSSL
  1228.   {
  1229.       return &rand_meth;
  1230. > }

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

crypto/rand/rand_lib.c:405:9: Skipping rand_pool_new(): empty list of specs
403.       } else {
404.           /* fill random pool and seed the current legacy RNG */
405.           pool = rand_pool_new(RAND_DRBG_STRENGTH,
               ^
406.                                (RAND_DRBG_STRENGTH + 7) / 8,
407.                                RAND_POOL_MAX_LENGTH);

crypto/rand/rand_lib.c:408:13: Taking false branch
406.                                (RAND_DRBG_STRENGTH + 7) / 8,
407.                                RAND_POOL_MAX_LENGTH);
408.           if (pool == NULL)
                   ^
409.               return 0;
410.   

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

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