<div dir="ltr"><div><div><div><div>Hi,<br><br></div>Yes, I am freeing
<b>
<b>_x509crl</b> </b>
using
<b>X509_CRL_free</b>
after using in
<b>X509_CRL_print</b>.<br></div>Above valgrind error is for free operation, is it wrong?<br><br></div>Regards,<br></div>Raghavendra<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, May 11, 2018 at 5:21 PM, Salz, Rich <span dir="ltr"><<a href="mailto:rsalz@akamai.com" target="_blank">rsalz@akamai.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div link="blue" vlink="purple" lang="EN-US">
<div class="m_-836912493721574412WordSection1">
<p class="MsoNormal">Something else is going wrong. Is that the only valgrind error? Are you sure you didn’t free the object in your code?<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">Raghavendra a <<a href="mailto:raghuasit@gmail.com" target="_blank">raghuasit@gmail.com</a>><br>
<b>Date: </b>Friday, May 11, 2018 at 6:22 AM<br>
<b>To: </b>Rich Salz <<a href="mailto:rsalz@akamai.com" target="_blank">rsalz@akamai.com</a>>, openssl-users <<a href="mailto:openssl-users@openssl.org" target="_blank">openssl-users@openssl.org</a>><br>
<b>Subject: </b>Re: [openssl-users] freeing of X509_CRL object<u></u><u></u></span></p>
</div><div><div class="h5">
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<div>
<div>
<div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><a name="m_-836912493721574412__MailOriginalBody">Hi Rich,<u></u><u></u></a></p>
</div>
<p class="MsoNormal"><span>Thanks for information.<u></u><u></u></span></p>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span>Any idea, why
<b>is X509_CRL_free</b> reporting below error with valgrind?<u></u><u></u></span></p>
<div>
<p class="MsoNormal"><span><u></u> <u></u></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span><b>Valgrind output:<br>
==31919== Invalid read of size 4<br>
==31919== at 0xB475EF2: CRYPTO_atomic_add (threads_pthread.c:155)<br>
==31919== by 0xB355537: asn1_do_lock (tasn_utl.c:79)<br>
==31919== by 0xB352767: asn1_item_embed_free (tasn_fre.c:88)<br>
==31919== by 0xB3528D4: ASN1_item_free (tasn_fre.c:20)<br>
<br>
</b></span><span><u></u><u></u></span></p>
</div>
<p class="MsoNormal"><span><u></u> <u></u></span></p>
</div>
<p class="MsoNormal"><span>Regards,<u></u><u></u></span></p>
</div>
<p class="MsoNormal"><span>Raghavendra<u></u><u></u></span></p>
<div>
<div>
<p class="MsoNormal"><span> <u></u><u></u></span></p>
</div>
</div>
</div>
<div>
<p class="MsoNormal"><span><u></u> <u></u></span></p>
<div>
<p class="MsoNormal"><span>On Fri, May 11, 2018 at 3:40 PM, Salz, Rich via openssl-users <</span><a href="mailto:openssl-users@openssl.org" target="_blank"><span>openssl-users@openssl.org</span><span></span></a><span>>
wrote:<u></u><u></u></span></p>
<blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in">
<div>
<div>
<p class="MsoNormal"><span>The print routine does not free anything.<u></u><u></u></span></p>
<p class="MsoNormal"><span> <u></u><u></u></span></p>
<div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><span><b><span style="font-size:12.0pt;color:black">From:
</span></b></span><span><span style="font-size:12.0pt;color:black">Raghavendra a <</span></span><a href="mailto:raghuasit@gmail.com" target="_blank"><span><span style="font-size:12.0pt">raghuasit@gmail.com</span></span><span></span></a><span><span style="font-size:12.0pt;color:black">><br>
<b>Reply-To: </b>openssl-users <</span></span><a href="mailto:openssl-users@openssl.org" target="_blank"><span><span style="font-size:12.0pt">openssl-users@openssl.org</span></span><span></span></a><span><span style="font-size:12.0pt;color:black">><br>
<b>Date: </b>Friday, May 11, 2018 at 5:53 AM<br>
<b>To: </b>openssl-users <</span></span><a href="mailto:openssl-users@openssl.org" target="_blank"><span><span style="font-size:12.0pt">openssl-users@openssl.org</span></span><span></span></a><span><span style="font-size:12.0pt;color:black">><br>
<b>Subject: </b>[openssl-users] freeing of X509_CRL object</span><u></u><u></u></span></p>
</div>
<div>
<div>
<div>
<p class="MsoNormal"><span> <u></u><u></u></span></p>
</div>
<div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span><a name="m_-836912493721574412_m_5607490293206293511__MailOriginalBody">Hi All,</a><u></u><u></u></span></p>
</div>
<p class="MsoNormal"><span>In my program,
<u></u><u></u></span></p>
<div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span>converting X509_CRL object to string format using
<b>X509_CRL_print</b> and BIO_get_mem_data.<b> </b>after that if de-allocate<b> _x509crl </b> using
<b>X509_CRL_free. </b>it is crashing with below reason<b>.</b><u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span><b>Valgrind output:<br>
==31919== Invalid read of size 4<br>
==31919== at 0xB475EF2: CRYPTO_atomic_add (threads_pthread.c:155)<br>
==31919== by 0xB355537: asn1_do_lock (tasn_utl.c:79)<br>
==31919== by 0xB352767: asn1_item_embed_free (tasn_fre.c:88)<br>
==31919== by 0xB3528D4: ASN1_item_free (tasn_fre.c:20)</b><u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span>not sure if
<b>X509_CRL_print </b>de-allocates some part<b> </b>of _x509crl ,<b> </b> external freeing of X509_CRL again leading to double free?<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span>Please help on this issue.<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span> <u></u><u></u></span></p>
</div>
<p class="MsoNormal"><span>Regards,<u></u><u></u></span></p>
</div>
<p class="MsoNormal"><span>Raghavendra<u></u><u></u></span></p>
<div>
<div>
<p class="MsoNormal"><span> <u></u><u></u></span></p>
<div>
<p class="MsoNormal"><span> <u></u><u></u></span></p>
</div>
</div>
</div>
<p class="MsoNormal"><span> <u></u><u></u></span></p>
</div>
</div>
</div>
</div>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span><br>
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</blockquote>
</div>
<p class="MsoNormal"><span><u></u> <u></u></span></p>
</div>
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</blockquote></div><br></div>