Memory leaks are observed for libgnutls in multi-thread mode

[tangtong]

Hi,Nikos
I have reproduced the core dump with the server/client in the attach. If not using the memory-leak patch, the core will not happen.

Regards
Tony

From: tang__tong at hotmail.com
To: nmav at gnutls.org
Date: Fri, 23 Oct 2009 14:28:50 +0000
CC: simon at josefsson.org; help-gnutls at gnu.org
Subject: RE: Memory leaks are observed for libgnutls in multi-thread mode








Hi,Nikos

 

The server is implemented by myself with gnutls2.9.4 and your patch. To make investigation easy, I will build a simplified server based on gnutls demo server codes and let you know the results later.

 

 

Regards

Tony

 
> Date: Fri, 23 Oct 2009 10:38:20 +0300
> Subject: Re: Memory leaks are observed for libgnutls in multi-thread mode
> From: nmav at gnutls.org
> To: tang__tong at hotmail.com
> CC: simon at josefsson.org; help-gnutls at gnu.org
> 
> Thanks. However in order to reproduce it I need to know to which
> server you connect to and which options does this server use?
> 
> 2009/10/23 tangtong <tang__tong at hotmail.com>:
> > Hi,Nikos
> >
> > The gnutls-cli built by me will core when I enable TLS1.2. I think the code
> > base I use is a little diffent from what you are using. The following is my
> > steps to setup the build enviorment:
> > 1)Download a gnutls releaes package 2.8.3 and decompress it;
> > 2)Download 2.9.4 snap shot and uncompress it to the directory created in the
> > step 1);
> > 3)Run patch you provide.
> >
> > Seems only snapshot of 2.9.4 is not the whole build env, that's why i
> > decompress it to a build enviorment of 2.8.3.
> >
> > Regards
> > Tony
> >
> >
> >
> >
> >
> >
> >
> >
> >> Date: Thu, 22 Oct 2009 19:31:02 +0300
> >> From: nmav at gnutls.org
> >> To: tang__tong at hotmail.com
> >> CC: simon at josefsson.org; help-gnutls at gnu.org
> >> Subject: Re: Memory leaks are observed for libgnutls in multi-thread mode
> >>
> >> tangtong wrote:
> >> > Hi,Nikos
> >>
> >> > 2)The patch doesn't support
> >> > "NONE:+VERS-TLS1.2:+AES-256-CBC:+RSA:+SHA256:+COMP-NULL", I t! hink your
> >> > patch disable the tls1.2 support, it will core with the following dump
> >> > info:
> >> > fe9a2bb8 _gcry_md_copy (ffbff33c, 0, 0, febc6ed0, 14f8, fed3805c) + 4
> >> > feca8dfc _gnutls_hash_copy (ffbff338, 365c4, 0, 0, 0, 0) + 80
> >> > fec9e0fc _gnutls_finished (36180, 2, ffbff440, 1, 6, 0) + 84
> >> > fec9edc0 _gnutls_send_handshake_final (0, 0, 0, e, e, 4) + 128
> >> > feca2548 _gnutls_handshake_common (36180, 0, 10, 4, ffffffe0, ffbff551)
> >> > + 30
> >> > feca382c gnutls_handshake (0, 4, 32fc8, 8e8, 17ac, ffbff5c4) + 60
> >> > 000119bc main (1, ffbffa54, ffbffa5c, 22508, 0, 0) + 118
> >> > 000112c8 _start (0, 0, 0, 0, 0, 0) + 5c
> >>
> >> Can you send me information on how I can reproduce this issue? I can use
> >> ./gnutls-cli tls.secg.org --priority
> >> "NONE:+VERS-TLS1.2:+AES-128-CBC:+RSA:+DHE-DSS:+SHA256:+COMP-NULL" to
> >> connect using TLS1.2 without any issues.>
> >> regards,
> >> Nikos
> >
> > ________________________________
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