[openssl-users] freeing of X509_CRL object

[Raghavendra a]

Hi Rich,

Thanks for information.
Any idea, why *is X509_CRL_free* reporting below error with valgrind?










*Valgrind output:==31919== Invalid read of size 4==31919==    at 0xB475EF2:
CRYPTO_atomic_add (threads_pthread.c:155)==31919==    by 0xB355537:
asn1_do_lock (tasn_utl.c:79)==31919==    by 0xB352767: asn1_item_embed_free
(tasn_fre.c:88)==31919==    by 0xB3528D4: ASN1_item_free (tasn_fre.c:20)*

Regards,
Raghavendra


On Fri, May 11, 2018 at 3:40 PM, Salz, Rich via openssl-users <
openssl-users at openssl.org> wrote:

> The print routine does not free anything.
>
>
>
> *From: *Raghavendra a <raghuasit at gmail.com>
> *Reply-To: *openssl-users <openssl-users at openssl.org>
> *Date: *Friday, May 11, 2018 at 5:53 AM
> *To: *openssl-users <openssl-users at openssl.org>
> *Subject: *[openssl-users] freeing of X509_CRL object
>
>
>
> Hi All,
>
> In my program,
>
> converting X509_CRL object to string format using *X509_CRL_print* and
> BIO_get_mem_data.  after that if de-allocate*  _x509crl * using *X509_CRL_free.
> *it is crashing with below reason*.*
>
>
>
>
>
>
> *Valgrind output: ==31919== Invalid read of size 4 ==31919==    at
> 0xB475EF2: CRYPTO_atomic_add (threads_pthread.c:155) ==31919==    by
> 0xB355537: asn1_do_lock (tasn_utl.c:79) ==31919==    by 0xB352767:
> asn1_item_embed_free (tasn_fre.c:88) ==31919==    by 0xB3528D4:
> ASN1_item_free (tasn_fre.c:20)*
>
> not sure if * X509_CRL_print *de-allocates some part of _x509crl ,
> external freeing of X509_CRL again leading to double free?
>
> Please help on this issue.
>
>
>
> Regards,
>
> Raghavendra
>
>
>
>
>
>
>
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