engines/e_ubsec.c:941: error: NULL_DEREFERENCE
  pointer `pub_key` last assigned on line 939 could be null and is dereferenced at line 941, column 17.
Showing all 48 steps of the trace


engines/e_ubsec.c:906:1: start of procedure ubsec_dh_generate_key()
904.           }
905.   
906. > static int ubsec_dh_generate_key (DH *dh)
907.           {
908.           int      ret               = 0,

engines/e_ubsec.c:908:9: 
906.   static int ubsec_dh_generate_key (DH *dh)
907.           {
908. >         int      ret               = 0,
909.                    random_bits       = 0,
910.                    pub_key_len       = 0,

engines/e_ubsec.c:913:9: 
911.                    priv_key_len      = 0,
912.                    fd;
913. >         BIGNUM   *pub_key          = NULL;
914.           BIGNUM   *priv_key         = NULL;
915.   

engines/e_ubsec.c:914:9: 
912.                    fd;
913.           BIGNUM   *pub_key          = NULL;
914. >         BIGNUM   *priv_key         = NULL;
915.   
916.           /* 

engines/e_ubsec.c:921:13: Taking false branch
919.            */
920.   
921.           if (dh->priv_key == NULL)
                   ^
922.                   {
923.                   priv_key = BN_new();

engines/e_ubsec.c:934:17: 
932.           else
933.                   {
934. >                 priv_key = dh->priv_key;
935.                   }
936.   

engines/e_ubsec.c:937:13: Taking true branch
935.                   }
936.   
937.           if (dh->pub_key == NULL)
                   ^
938.                   {
939.                   pub_key = BN_new();

engines/e_ubsec.c:939:17: 
937.           if (dh->pub_key == NULL)
938.                   {
939. >                 pub_key = BN_new();
940.                   pub_key_len = BN_num_bits(dh->p);
941.                   bn_wexpand(pub_key, dh->p->top);

crypto/bn/bn_lib.c:295:1: start of procedure BN_new()
  293.   	}
  294.   
  295. > BIGNUM *BN_new(void)
  296.   	{
  297.   	BIGNUM *ret;

crypto/bn/bn_lib.c:299:6: 
  297.   	BIGNUM *ret;
  298.   
  299. > 	if ((ret=(BIGNUM *)OPENSSL_malloc(sizeof(BIGNUM))) == NULL)
  300.   		{
  301.   		BNerr(BN_F_BN_NEW,ERR_R_MALLOC_FAILURE);

crypto/mem.c:291:1: start of procedure CRYPTO_malloc()
    289.   	}
    290.   
    291. > void *CRYPTO_malloc(int num, const char *file, int line)
    292.   	{
    293.   	void *ret = NULL;

crypto/mem.c:293:2: 
    291.   void *CRYPTO_malloc(int num, const char *file, int line)
    292.   	{
    293. > 	void *ret = NULL;
    294.   	extern unsigned char cleanse_ctr;
    295.   

crypto/mem.c:296:6: Taking false branch
    294.   	extern unsigned char cleanse_ctr;
    295.   
    296.   	if (num <= 0) return NULL;
                ^
    297.   
    298.   	allow_customize = 0;

crypto/mem.c:298:2: 
    296.   	if (num <= 0) return NULL;
    297.   
    298. > 	allow_customize = 0;
    299.   	if (malloc_debug_func != NULL)
    300.   		{

crypto/mem.c:299:6: Taking true branch
    297.   
    298.   	allow_customize = 0;
    299.   	if (malloc_debug_func != NULL)
                ^
    300.   		{
    301.   		allow_customize_debug = 0;

crypto/mem.c:301:3: 
    299.   	if (malloc_debug_func != NULL)
    300.   		{
    301. > 		allow_customize_debug = 0;
    302.   		malloc_debug_func(NULL, num, file, line, 0);
    303.   		}

crypto/mem.c:302:3: Skipping __function_pointer__(): unresolved function pointer
    300.   		{
    301.   		allow_customize_debug = 0;
    302.   		malloc_debug_func(NULL, num, file, line, 0);
             ^
    303.   		}
    304.   	ret = malloc_ex_func(num,file,line);

crypto/mem.c:304:2: Skipping __function_pointer__(): unresolved function pointer
    302.   		malloc_debug_func(NULL, num, file, line, 0);
    303.   		}
    304.   	ret = malloc_ex_func(num,file,line);
            ^
    305.   #ifdef LEVITTE_DEBUG_MEM
    306.   	fprintf(stderr, "LEVITTE_DEBUG_MEM:         > 0x%p (%d)\n", ret, num);

crypto/mem.c:308:6: Taking true branch
    306.   	fprintf(stderr, "LEVITTE_DEBUG_MEM:         > 0x%p (%d)\n", ret, num);
    307.   #endif
    308.   	if (malloc_debug_func != NULL)
                ^
    309.   		malloc_debug_func(ret, num, file, line, 1);
    310.   

crypto/mem.c:309:3: Skipping __function_pointer__(): unresolved function pointer
    307.   #endif
    308.   	if (malloc_debug_func != NULL)
    309.   		malloc_debug_func(ret, num, file, line, 1);
             ^
    310.   
    311.           /* Create a dependency on the value of 'cleanse_ctr' so our memory

crypto/mem.c:314:12: Taking false branch
    312.            * sanitisation function can't be optimised out. NB: We only do
    313.            * this for >2Kb so the overhead doesn't bother us. */
    314.           if(ret && (num > 2048))
                      ^
    315.                   ((unsigned char *)ret)[0] = cleanse_ctr;
    316.   

crypto/mem.c:317:2: 
    315.                   ((unsigned char *)ret)[0] = cleanse_ctr;
    316.   
    317. > 	return ret;
    318.   	}
    319.   

crypto/mem.c:318:2: return from a call to CRYPTO_malloc
    316.   
    317.   	return ret;
    318.   	}
            ^
    319.   
    320.   void *CRYPTO_realloc(void *str, int num, const char *file, int line)

crypto/bn/bn_lib.c:299:6: Taking true branch
  297.   	BIGNUM *ret;
  298.   
  299.   	if ((ret=(BIGNUM *)OPENSSL_malloc(sizeof(BIGNUM))) == NULL)
              ^
  300.   		{
  301.   		BNerr(BN_F_BN_NEW,ERR_R_MALLOC_FAILURE);

crypto/bn/bn_lib.c:301:3: 
  299.   	if ((ret=(BIGNUM *)OPENSSL_malloc(sizeof(BIGNUM))) == NULL)
  300.   		{
  301. > 		BNerr(BN_F_BN_NEW,ERR_R_MALLOC_FAILURE);
  302.   		return(NULL);
  303.   		}

crypto/err/err.c:664:1: start of procedure ERR_put_error()
    662.   /********************************************************/
    663.   
    664. > void ERR_put_error(int lib, int func, int reason, const char *file,
    665.   	     int line)
    666.   	{

crypto/err/err.c:688:2: Skipping ERR_get_state(): empty list of specs
    686.   	}
    687.   #endif
    688.   	es=ERR_get_state();
            ^
    689.   
    690.   	es->top=(es->top+1)%ERR_NUM_ERRORS;

crypto/err/err.c:690:2: 
    688.   	es=ERR_get_state();
    689.   
    690. > 	es->top=(es->top+1)%ERR_NUM_ERRORS;
    691.   	if (es->top == es->bottom)
    692.   		es->bottom=(es->bottom+1)%ERR_NUM_ERRORS;

crypto/err/err.c:691:6: Taking false branch
    689.   
    690.   	es->top=(es->top+1)%ERR_NUM_ERRORS;
    691.   	if (es->top == es->bottom)
                ^
    692.   		es->bottom=(es->bottom+1)%ERR_NUM_ERRORS;
    693.   	es->err_flags[es->top]=0;

crypto/err/err.c:693:2: 
    691.   	if (es->top == es->bottom)
    692.   		es->bottom=(es->bottom+1)%ERR_NUM_ERRORS;
    693. > 	es->err_flags[es->top]=0;
    694.   	es->err_buffer[es->top]=ERR_PACK(lib,func,reason);
    695.   	es->err_file[es->top]=file;

crypto/err/err.c:694:2: 
    692.   		es->bottom=(es->bottom+1)%ERR_NUM_ERRORS;
    693.   	es->err_flags[es->top]=0;
    694. > 	es->err_buffer[es->top]=ERR_PACK(lib,func,reason);
    695.   	es->err_file[es->top]=file;
    696.   	es->err_line[es->top]=line;

crypto/err/err.c:695:2: 
    693.   	es->err_flags[es->top]=0;
    694.   	es->err_buffer[es->top]=ERR_PACK(lib,func,reason);
    695. > 	es->err_file[es->top]=file;
    696.   	es->err_line[es->top]=line;
    697.   	err_clear_data(es,es->top);

crypto/err/err.c:696:2: 
    694.   	es->err_buffer[es->top]=ERR_PACK(lib,func,reason);
    695.   	es->err_file[es->top]=file;
    696. > 	es->err_line[es->top]=line;
    697.   	err_clear_data(es,es->top);
    698.   	}

crypto/err/err.c:697:2: Taking true branch
    695.   	es->err_file[es->top]=file;
    696.   	es->err_line[es->top]=line;
    697.   	err_clear_data(es,es->top);
            ^
    698.   	}
    699.   

crypto/err/err.c:697:2: Taking false branch
    695.   	es->err_file[es->top]=file;
    696.   	es->err_line[es->top]=line;
    697.   	err_clear_data(es,es->top);
            ^
    698.   	}
    699.   

crypto/err/err.c:697:2: Loop condition is false. Leaving loop
    695.   	es->err_file[es->top]=file;
    696.   	es->err_line[es->top]=line;
    697.   	err_clear_data(es,es->top);
            ^
    698.   	}
    699.   

crypto/err/err.c:698:2: return from a call to ERR_put_error
    696.   	es->err_line[es->top]=line;
    697.   	err_clear_data(es,es->top);
    698.   	}
            ^
    699.   
    700.   void ERR_clear_error(void)

crypto/bn/bn_lib.c:302:3: 
  300.   		{
  301.   		BNerr(BN_F_BN_NEW,ERR_R_MALLOC_FAILURE);
  302. > 		return(NULL);
  303.   		}
  304.   	ret->flags=BN_FLG_MALLOCED;

crypto/bn/bn_lib.c:311:2: return from a call to BN_new
  309.   	bn_check_top(ret);
  310.   	return(ret);
  311.   	}
          ^
  312.   
  313.   /* This is used both by bn_expand2() and bn_dup_expand() */

engines/e_ubsec.c:940:17: 
938.                   {
939.                   pub_key = BN_new();
940. >                 pub_key_len = BN_num_bits(dh->p);
941.                   bn_wexpand(pub_key, dh->p->top);
942.                   if(pub_key == NULL) goto err;

crypto/bn/bn_lib.c:245:1: start of procedure BN_num_bits()
  243.   	}
  244.   
  245. > int BN_num_bits(const BIGNUM *a)
  246.   	{
  247.   	int i = a->top - 1;

crypto/bn/bn_lib.c:247:2: 
  245.   int BN_num_bits(const BIGNUM *a)
  246.   	{
  247. > 	int i = a->top - 1;
  248.   	bn_check_top(a);
  249.   

crypto/bn/bn_lib.c:250:6: Taking false branch
  248.   	bn_check_top(a);
  249.   
  250.   	if (BN_is_zero(a)) return 0;
              ^
  251.   	return ((i*BN_BITS2) + BN_num_bits_word(a->d[i]));
  252.   	}

crypto/bn/bn_lib.c:250:6: Taking true branch
  248.   	bn_check_top(a);
  249.   
  250.   	if (BN_is_zero(a)) return 0;
              ^
  251.   	return ((i*BN_BITS2) + BN_num_bits_word(a->d[i]));
  252.   	}

crypto/bn/bn_lib.c:250:6: Taking false branch
  248.   	bn_check_top(a);
  249.   
  250.   	if (BN_is_zero(a)) return 0;
              ^
  251.   	return ((i*BN_BITS2) + BN_num_bits_word(a->d[i]));
  252.   	}

crypto/bn/bn_lib.c:251:2: Skipping BN_num_bits_word(): empty list of specs
  249.   
  250.   	if (BN_is_zero(a)) return 0;
  251.   	return ((i*BN_BITS2) + BN_num_bits_word(a->d[i]));
          ^
  252.   	}
  253.   

crypto/bn/bn_lib.c:252:2: return from a call to BN_num_bits
  250.   	if (BN_is_zero(a)) return 0;
  251.   	return ((i*BN_BITS2) + BN_num_bits_word(a->d[i]));
  252.   	}
          ^
  253.   
  254.   void BN_clear_free(BIGNUM *a)

engines/e_ubsec.c:941:17: 
939.                   pub_key = BN_new();
940.                   pub_key_len = BN_num_bits(dh->p);
941. >                 bn_wexpand(pub_key, dh->p->top);
942.                   if(pub_key == NULL) goto err;
943.                   }
