test/bntest.c:481: error: BUFFER_OVERRUN_L3
  Offset added: [8, +oo] Size: [0, 67108856] by call to `BN_GF2m_arr2poly`.
Showing all 21 steps of the trace


test/bntest.c:481:5: Call
479.           goto err;
480.   
481.       BN_GF2m_arr2poly(p0, b[0]);
           ^
482.       BN_GF2m_arr2poly(p1, b[1]);
483.   

crypto/bn/bn_gf2m.c:1197:1: Parameter `a->top`
  1195.    * bit-string.  The array must be terminated by -1.
  1196.    */
  1197. > int BN_GF2m_arr2poly(const int p[], BIGNUM *a)
  1198.   {
  1199.       int i;

crypto/bn/bn_gf2m.c:1202:5: Call
  1200.   
  1201.       bn_check_top(a);
  1202.       BN_zero(a);
              ^
  1203.       for (i = 0; p[i] != -1; i++) {
  1204.           if (BN_set_bit(a, p[i]) == 0)

crypto/bn/bn_lib.c:387:1: Parameter `a->top`
    385.   }
    386.   
    387. > int BN_set_word(BIGNUM *a, BN_ULONG w)
    388.   {
    389.       bn_check_top(a);

crypto/bn/bn_lib.c:390:9: Call
    388.   {
    389.       bn_check_top(a);
    390.       if (bn_expand(a, (int)sizeof(BN_ULONG) * 8) == NULL)
                   ^
    391.           return 0;
    392.       a->neg = 0;

crypto/bn/bn_lcl.h:651:1: Parameter `a->top`
      649.                            const BIGNUM *add, const BIGNUM *rem, BN_CTX *ctx);
      650.   
      651. > static ossl_inline BIGNUM *bn_expand(BIGNUM *a, int bits)
      652.   {
      653.       if (bits > (INT_MAX - BN_BITS2 + 1))

crypto/bn/bn_lcl.h:659:12: Call
      657.           return a;
      658.   
      659.       return bn_expand2((a),(bits+BN_BITS2-1)/BN_BITS2);
                        ^
      660.   }
      661.   

crypto/bn/bn_lib.c:273:1: Parameter `b->top`
        271.    */
        272.   
        273. > BIGNUM *bn_expand2(BIGNUM *b, int words)
        274.   {
        275.       bn_check_top(b);

crypto/bn/bn_lib.c:278:23: Call
        276.   
        277.       if (words > b->dmax) {
        278.           BN_ULONG *a = bn_expand_internal(b, words);
                                     ^
        279.           if (!a)
        280.               return NULL;

crypto/bn/bn_lib.c:235:1: <Offset trace>
233.   /* This is used by bn_expand2() */
234.   /* The caller MUST check that words > b->dmax before calling this */
235. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
236.   {
237.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:235:1: Parameter `b->top`
          233.   /* This is used by bn_expand2() */
          234.   /* The caller MUST check that words > b->dmax before calling this */
          235. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
          236.   {
          237.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:235:1: <Length trace>
233.   /* This is used by bn_expand2() */
234.   /* The caller MUST check that words > b->dmax before calling this */
235. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
236.   {
237.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:235:1: Parameter `words`
          233.   /* This is used by bn_expand2() */
          234.   /* The caller MUST check that words > b->dmax before calling this */
          235. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
          236.   {
          237.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:252:13: Call
          250.           a = OPENSSL_secure_zalloc(words * sizeof(*a));
          251.       else
          252.           a = OPENSSL_zalloc(words * sizeof(*a));
                             ^
          253.       if (a == NULL) {
          254.           BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);

crypto/mem.c:218:1: Parameter `num`
            216.   }
            217.   
            218. > void *CRYPTO_zalloc(size_t num, const char *file, int line)
            219.   {
            220.       void *ret = CRYPTO_malloc(num, file, line);

crypto/mem.c:220:17: Call
            218.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
            219.   {
            220.       void *ret = CRYPTO_malloc(num, file, line);
                                   ^
            221.   
            222.       FAILTEST();

crypto/mem.c:198:9: Assignment
              196.   
              197.       if (num == 0)
              198.           return NULL;
                             ^
              199.   
              200.       FAILTEST();

crypto/mem.c:220:5: Assignment
            218.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
            219.   {
            220.       void *ret = CRYPTO_malloc(num, file, line);
                       ^
            221.   
            222.       FAILTEST();

crypto/mem.c:225:5: Assignment
            223.       if (ret != NULL)
            224.           memset(ret, 0, num);
            225.       return ret;
                       ^
            226.   }
            227.   

crypto/bn/bn_lib.c:252:9: Assignment
          250.           a = OPENSSL_secure_zalloc(words * sizeof(*a));
          251.       else
          252.           a = OPENSSL_zalloc(words * sizeof(*a));
                         ^
          253.       if (a == NULL) {
          254.           BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);

crypto/bn/bn_lib.c:260:9: Array access: Offset added: [8, +oo] Size: [0, 67108856] by call to `BN_GF2m_arr2poly` 
          258.       assert(b->top <= words);
          259.       if (b->top > 0)
          260.           memcpy(a, b->d, sizeof(*a) * b->top);
                         ^
          261.   
          262.       return a;

static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
{
    BN_ULONG *a = NULL;
    bn_check_top(b);
    if (words > (INT_MAX / (4 * BN_BITS2))) {
        BNerr(BN_F_BN_EXPAND_INTERNAL, BN_R_BIGNUM_TOO_LONG);
        return NULL;
    }
    if (BN_get_flags(b, BN_FLG_STATIC_DATA)) {
        BNerr(BN_F_BN_EXPAND_INTERNAL, BN_R_EXPAND_ON_STATIC_BIGNUM_DATA);
        return NULL;
    }
    if (BN_get_flags(b, BN_FLG_SECURE))
        a = OPENSSL_secure_zalloc(words * sizeof(*a));
    else
        a = OPENSSL_zalloc(words * sizeof(*a));
    if (a == NULL) {
        BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);
        return NULL;
    }
    assert(b->top <= words);
    if (b->top > 0)
        memcpy(a, b->d, sizeof(*a) * b->top);
    return a;
}
['static int test_gf2m_mod(void)\n{\n    BIGNUM *a = NULL, *b[2] = {NULL,NULL}, *c = NULL, *d = NULL, *e = NULL;\n    int i, j, st = 0;\n    if (!TEST_ptr(a = BN_new())\n            || !TEST_ptr(b[0] = BN_new())\n            || !TEST_ptr(b[1] = BN_new())\n            || !TEST_ptr(c = BN_new())\n            || !TEST_ptr(d = BN_new())\n            || !TEST_ptr(e = BN_new()))\n        goto err;\n    BN_GF2m_arr2poly(p0, b[0]);\n    BN_GF2m_arr2poly(p1, b[1]);\n    for (i = 0; i < NUM0; i++) {\n        BN_bntest_rand(a, 1024, 0, 0);\n        for (j = 0; j < 2; j++) {\n            BN_GF2m_mod(c, a, b[j]);\n            BN_GF2m_add(d, a, c);\n            BN_GF2m_mod(e, d, b[j]);\n            if (!TEST_BN_eq_zero(e))\n                goto err;\n        }\n    }\n    st = 1;\n err:\n    BN_free(a);\n    BN_free(b[0]);\n    BN_free(b[1]);\n    BN_free(c);\n    BN_free(d);\n    BN_free(e);\n    return st;\n}', 'int BN_GF2m_arr2poly(const int p[], BIGNUM *a)\n{\n    int i;\n    bn_check_top(a);\n    BN_zero(a);\n    for (i = 0; p[i] != -1; i++) {\n        if (BN_set_bit(a, p[i]) == 0)\n            return 0;\n    }\n    bn_check_top(a);\n    return 1;\n}', 'int BN_set_word(BIGNUM *a, BN_ULONG w)\n{\n    bn_check_top(a);\n    if (bn_expand(a, (int)sizeof(BN_ULONG) * 8) == NULL)\n        return 0;\n    a->neg = 0;\n    a->d[0] = w;\n    a->top = (w ? 1 : 0);\n    bn_check_top(a);\n    return 1;\n}', 'static ossl_inline BIGNUM *bn_expand(BIGNUM *a, int bits)\n{\n    if (bits > (INT_MAX - BN_BITS2 + 1))\n        return NULL;\n    if (((bits+BN_BITS2-1)/BN_BITS2) <= (a)->dmax)\n        return a;\n    return bn_expand2((a),(bits+BN_BITS2-1)/BN_BITS2);\n}', 'BIGNUM *bn_expand2(BIGNUM *b, int words)\n{\n    bn_check_top(b);\n    if (words > b->dmax) {\n        BN_ULONG *a = bn_expand_internal(b, words);\n        if (!a)\n            return NULL;\n        if (b->d) {\n            OPENSSL_cleanse(b->d, b->dmax * sizeof(b->d[0]));\n            bn_free_d(b);\n        }\n        b->d = a;\n        b->dmax = words;\n    }\n    bn_check_top(b);\n    return b;\n}', 'static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)\n{\n    BN_ULONG *a = NULL;\n    bn_check_top(b);\n    if (words > (INT_MAX / (4 * BN_BITS2))) {\n        BNerr(BN_F_BN_EXPAND_INTERNAL, BN_R_BIGNUM_TOO_LONG);\n        return NULL;\n    }\n    if (BN_get_flags(b, BN_FLG_STATIC_DATA)) {\n        BNerr(BN_F_BN_EXPAND_INTERNAL, BN_R_EXPAND_ON_STATIC_BIGNUM_DATA);\n        return NULL;\n    }\n    if (BN_get_flags(b, BN_FLG_SECURE))\n        a = OPENSSL_secure_zalloc(words * sizeof(*a));\n    else\n        a = OPENSSL_zalloc(words * sizeof(*a));\n    if (a == NULL) {\n        BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);\n        return NULL;\n    }\n    assert(b->top <= words);\n    if (b->top > 0)\n        memcpy(a, b->d, sizeof(*a) * b->top);\n    return a;\n}', 'void *CRYPTO_zalloc(size_t num, const char *file, int line)\n{\n    void *ret = CRYPTO_malloc(num, file, line);\n    FAILTEST();\n    if (ret != NULL)\n        memset(ret, 0, num);\n    return ret;\n}', 'void *CRYPTO_malloc(size_t num, const char *file, int line)\n{\n    void *ret = NULL;\n    INCREMENT(malloc_count);\n    if (malloc_impl != NULL && malloc_impl != CRYPTO_malloc)\n        return malloc_impl(num, file, line);\n    if (num == 0)\n        return NULL;\n    FAILTEST();\n    allow_customize = 0;\n#ifndef OPENSSL_NO_CRYPTO_MDEBUG\n    if (call_malloc_debug) {\n        CRYPTO_mem_debug_malloc(NULL, num, 0, file, line);\n        ret = malloc(num);\n        CRYPTO_mem_debug_malloc(ret, num, 1, file, line);\n    } else {\n        ret = malloc(num);\n    }\n#else\n    (void)(file); (void)(line);\n    ret = malloc(num);\n#endif\n    return ret;\n}']