ssl/statem/extensions.c:1002: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - [`pkt->written`, `pkt->written` + 6]):unsigned64 by call to `construct_ca_names`.
Showing all 14 steps of the trace


ssl/statem/extensions.c:1001:13: Call
999.   
1000.       if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_certificate_authorities)
1001.           || !WPACKET_start_sub_packet_u16(pkt)
                    ^
1002.           || !construct_ca_names(s, pkt)
1003.           || !WPACKET_close(pkt)) {

ssl/packet.c:275:1: Parameter `pkt->buf->length`
  273.   }
  274.   
  275. > int WPACKET_start_sub_packet_len__(WPACKET *pkt, size_t lenbytes)
  276.   {
  277.       WPACKET_SUB *sub;

ssl/statem/extensions.c:1002:13: Call
1000.       if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_certificate_authorities)
1001.           || !WPACKET_start_sub_packet_u16(pkt)
1002.           || !construct_ca_names(s, pkt)
                    ^
1003.           || !WPACKET_close(pkt)) {
1004.           SSLerr(SSL_F_TLS_CONSTRUCT_CERTIFICATE_AUTHORITIES,

ssl/statem/statem_lib.c:1974:1: Parameter `pkt->written`
  1972.   }
  1973.   
  1974. > int construct_ca_names(SSL *s, WPACKET *pkt)
  1975.   {
  1976.       STACK_OF(X509_NAME) *ca_sk = SSL_get_client_CA_list(s);

ssl/statem/statem_lib.c:1979:10: Call
  1977.   
  1978.       /* Start sub-packet for client CA list */
  1979.       if (!WPACKET_start_sub_packet_u16(pkt))
                   ^
  1980.           return 0;
  1981.   

ssl/packet.c:275:1: Parameter `pkt->written`
    273.   }
    274.   
    275. > int WPACKET_start_sub_packet_len__(WPACKET *pkt, size_t lenbytes)
    276.   {
    277.       WPACKET_SUB *sub;

ssl/packet.c:299:10: Call
    297.       }
    298.   
    299.       if (!WPACKET_allocate_bytes(pkt, lenbytes, &lenchars))
                    ^
    300.           return 0;
    301.       /* Convert to an offset in case the underlying BUF_MEM gets realloc'd */

ssl/packet.c:15:1: Parameter `pkt->written`
      13.   #define DEFAULT_BUF_SIZE    256
      14.   
      15. > int WPACKET_allocate_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
      16.   {
      17.       if (!WPACKET_reserve_bytes(pkt, len, allocbytes))

ssl/packet.c:17:10: Call
      15.   int WPACKET_allocate_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
      16.   {
      17.       if (!WPACKET_reserve_bytes(pkt, len, allocbytes))
                     ^
      18.           return 0;
      19.   

ssl/packet.c:39:1: <LHS trace>
37.                        ? (p)->staticbuf : (unsigned char *)(p)->buf->data)
38.   
39. > int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
40.   {
41.       /* Internal API, so should not fail */

ssl/packet.c:39:1: Parameter `pkt->buf->length`
        37.                        ? (p)->staticbuf : (unsigned char *)(p)->buf->data)
        38.   
        39. > int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
        40.   {
        41.       /* Internal API, so should not fail */

ssl/packet.c:39:1: <RHS trace>
37.                        ? (p)->staticbuf : (unsigned char *)(p)->buf->data)
38.   
39. > int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
40.   {
41.       /* Internal API, so should not fail */

ssl/packet.c:39:1: Parameter `len`
        37.                        ? (p)->staticbuf : (unsigned char *)(p)->buf->data)
        38.   
        39. > int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
        40.   {
        41.       /* Internal API, so should not fail */

ssl/packet.c:49:36: Binary operation: ([0, +oo] - [pkt->written, pkt->written + 6]):unsigned64 by call to `construct_ca_names` 
        47.           return 0;
        48.   
        49.       if (pkt->staticbuf == NULL && (pkt->buf->length - pkt->written < len)) {
                                                 ^
        50.           size_t newlen;
        51.           size_t reflen;

int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)
{
    assert(pkt->subs != NULL && len != 0);
    if (pkt->subs == NULL || len == 0)
        return 0;
    if (pkt->maxsize - pkt->written < len)
        return 0;
    if (pkt->staticbuf == NULL && (pkt->buf->length - pkt->written < len)) {
        size_t newlen;
        size_t reflen;
        reflen = (len > pkt->buf->length) ? len : pkt->buf->length;
        if (reflen > SIZE_MAX / 2) {
            newlen = SIZE_MAX;
        } else {
            newlen = reflen * 2;
            if (newlen < DEFAULT_BUF_SIZE)
                newlen = DEFAULT_BUF_SIZE;
        }
        if (BUF_MEM_grow(pkt->buf, newlen) == 0)
            return 0;
    }
    if (allocbytes != NULL)
        *allocbytes = WPACKET_get_curr(pkt);
    return 1;
}
['static int tls_construct_certificate_authorities(SSL *s, WPACKET *pkt,\n                                                 unsigned int context, X509 *x,\n                                                 size_t chainidx, int *al)\n{\n    STACK_OF(X509_NAME) *ca_sk = SSL_get_client_CA_list(s);\n    if (ca_sk == NULL || sk_X509_NAME_num(ca_sk) == 0)\n        return 1;\n    if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_certificate_authorities)\n        || !WPACKET_start_sub_packet_u16(pkt)\n        || !construct_ca_names(s, pkt)\n        || !WPACKET_close(pkt)) {\n        SSLerr(SSL_F_TLS_CONSTRUCT_CERTIFICATE_AUTHORITIES,\n               ERR_R_INTERNAL_ERROR);\n        return 0;\n    }\n    return 1;\n}', 'int WPACKET_start_sub_packet_len__(WPACKET *pkt, size_t lenbytes)\n{\n    WPACKET_SUB *sub;\n    unsigned char *lenchars;\n    assert(pkt->subs != NULL);\n    if (pkt->subs == NULL)\n        return 0;\n    sub = OPENSSL_zalloc(sizeof(*sub));\n    if (sub == NULL)\n        return 0;\n    sub->parent = pkt->subs;\n    pkt->subs = sub;\n    sub->pwritten = pkt->written + lenbytes;\n    sub->lenbytes = lenbytes;\n    if (lenbytes == 0) {\n        sub->packet_len = 0;\n        return 1;\n    }\n    if (!WPACKET_allocate_bytes(pkt, lenbytes, &lenchars))\n        return 0;\n    sub->packet_len = lenchars - GETBUF(pkt);\n    return 1;\n}', 'int construct_ca_names(SSL *s, WPACKET *pkt)\n{\n    STACK_OF(X509_NAME) *ca_sk = SSL_get_client_CA_list(s);\n    if (!WPACKET_start_sub_packet_u16(pkt))\n        return 0;\n    if (ca_sk != NULL) {\n        int i;\n        for (i = 0; i < sk_X509_NAME_num(ca_sk); i++) {\n            unsigned char *namebytes;\n            X509_NAME *name = sk_X509_NAME_value(ca_sk, i);\n            int namelen;\n            if (name == NULL\n                    || (namelen = i2d_X509_NAME(name, NULL)) < 0\n                    || !WPACKET_sub_allocate_bytes_u16(pkt, namelen,\n                                                       &namebytes)\n                    || i2d_X509_NAME(name, &namebytes) != namelen) {\n                return 0;\n            }\n        }\n    }\n    if (!WPACKET_close(pkt))\n        return 0;\n    return 1;\n}', 'int WPACKET_allocate_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)\n{\n    if (!WPACKET_reserve_bytes(pkt, len, allocbytes))\n        return 0;\n    pkt->written += len;\n    pkt->curr += len;\n    return 1;\n}', 'int WPACKET_reserve_bytes(WPACKET *pkt, size_t len, unsigned char **allocbytes)\n{\n    assert(pkt->subs != NULL && len != 0);\n    if (pkt->subs == NULL || len == 0)\n        return 0;\n    if (pkt->maxsize - pkt->written < len)\n        return 0;\n    if (pkt->staticbuf == NULL && (pkt->buf->length - pkt->written < len)) {\n        size_t newlen;\n        size_t reflen;\n        reflen = (len > pkt->buf->length) ? len : pkt->buf->length;\n        if (reflen > SIZE_MAX / 2) {\n            newlen = SIZE_MAX;\n        } else {\n            newlen = reflen * 2;\n            if (newlen < DEFAULT_BUF_SIZE)\n                newlen = DEFAULT_BUF_SIZE;\n        }\n        if (BUF_MEM_grow(pkt->buf, newlen) == 0)\n            return 0;\n    }\n    if (allocbytes != NULL)\n        *allocbytes = WPACKET_get_curr(pkt);\n    return 1;\n}']