Is it because x509 is a local variable in 1 function & freed in another?
PK
On Thu, Oct 3, 2013 at 5:22 PM, Sanjay Kumar (sanjaku5)
<sanja...@cisco.com>wrote:
> Hi,****
>
> ** **
>
> I have below 2 functions****
>
> ** **
>
> **1. **Received the certificate data is DER format and convert to
> X509 format****
>
> ** **
>
> RetCode convert_der_to_x509(uint8_t *cert_der, uint32_t cert_len)****
>
> {****
>
> const unsigned char *bptr = NULL;****
>
> ** **
>
> X509 *x509 = NULL;****
>
> bptr = (unsigned char *)cert_der;****
>
> x509 = d2i_X509(NULL, &bptr, cert_len); /*x509 structure
> is allocated here*/****
>
> if (x509 == NULL)****
>
> {****
>
> syfer_log->ERR("DER to x509 converion failed");****
>
> return RET_ERROR;****
>
> }****
>
> return RET_SUCCESS;****
>
> }****
>
> ** **
>
> **2. **Clean up the X509 structure****
>
> ** **
>
> Void cleanup_x509()****
>
> {****
>
> X509_free(x509);****
>
> }****
>
> ** **
>
> Query:****
>
> When I call the cleanup_x509 function:****
>
> ** **
>
> I get the memory crash****
>
> ** **
>
> Backtrace:****
>
> Program terminated with signal 11, Segmentation fault.****
>
> #0 0x081e7748 in ASN1_STRING_free ()****
>
> #0 0x081e7748 in ASN1_STRING_free ()****
>
> #1 0x081e2b90 in ASN1_primitive_free ()****
>
> #2 0x081e2b7a in ASN1_primitive_free ()****
>
> #3 0x081e2c1a in asn1_item_combine_free ()****
>
> #4 0x081e2e5d in ASN1_template_free ()****
>
> #5 0x081e2d9e in asn1_item_combine_free ()****
>
> #6 0x081e2e5d in ASN1_template_free ()****
>
> #7 0x081e2d9e in asn1_item_combine_free ()****
>
> #8 0x081e2e93 in ASN1_item_free ()****
>
> #9 0x081defd7 in X509_free ()****
>
> #10 0x08052673 in CertificateRemote::cleanup_x509 (this=0x9bb55f0) at
> syfer/crypto/Certificate.cpp:309****
>
> ** **
>
> What could be possible reason for the above crash ?****
>
> ** **
>
> ** **
>
> Thanks,****
>
> Sanjay****
>
> ** **
>
