Re: instability

[Paulo Panhoto <paulo.panhoto@xxxxxxxxx>]

This won't make any sense to me but it this got better after I started set
the parameter SSH_OPTIONS_USER.

On Mon, May 23, 2011 at 4:41 PM, Paulo Panhoto <paulo.panhoto@xxxxxxxxx>wrote:

> Hello,
>
> I'm writing a Qt app with libssh. The best approach I've got was this: wrap
> ssh in a QThread that emits signals to other components.
>
>
>         session = ssh_new();
>
>         if (session == NULL)
>         {
>             throw SSHException(tr("ssh_new failed"));
>         }
>         const std::string & stdHost = host.toStdString();
>         ssh_options_set(session, SSH_OPTIONS_HOST, stdHost.c_str());
>         ssh_options_set(session, SSH_OPTIONS_PORT, &port);
>         ssh_options_set(session, SSH_OPTIONS_SSH1, &disabled);
>         ssh_options_set(session, SSH_OPTIONS_SSH2, &enabled);
>
>         emit stateChanged(CONNECTING);
>         emit debugInfo(tr("Conecting to %0:%1").arg(host).arg(port));
>         if (ssh_connect(session) != SSH_OK)
>         {
>             throw SSHException(QString("ssh_connect:
> %1").arg(ssh_get_error(session)));
>         }
>
> This piece of code is causing me trouble: I'm running it on a opensuse 11.3
> and tested it with libssh 0.4.2 (the "branding" release) and 0.4.8.
>
> When I compile it against OpenSSL, I get aborts due to double free inside
> libcrypto: works most of the time when I run it natively. Nevertheless, when
> the program is run via xming server, the error rate is almost 100%
> libopenssl 1.0.0-6.7.1 - x86_64
>
> #0  0x00007ffff5aca9e5 in raise () from /lib64/libc.so.6
> #1  0x00007ffff5acbee6 in abort () from /lib64/libc.so.6
> #2  0x00007ffff5b05c53 in __libc_message () from /lib64/libc.so.6
> #3  0x00007ffff5b0b226 in malloc_printerr () from /lib64/libc.so.6
> #4  0x00007ffff5b0e8e3 in _int_realloc () from /lib64/libc.so.6
> #5  0x00007ffff5b10142 in realloc () from /lib64/libc.so.6
> #6  0x00007ffff4ca6d4f in CRYPTO_realloc () from /lib64/libcrypto.so.1.0.0
> #7  0x00007ffff4d0d2a8 in lh_insert () from /lib64/libcrypto.so.1.0.0
> #8  0x00007ffff4ca980c in OBJ_NAME_add () from /lib64/libcrypto.so.1.0.0
> #9  0x00007ffff4d1a66b in OpenSSL_add_all_digests () from
> /lib64/libcrypto.so.1.0.0
> #10 0x00007ffff7bac3cc in ssh_crypto_init () at
> /home/paulo/Downloads/oss-src/libssh-0.4.8/libssh/dh.c:144
> #11 0x00007ffff7bae8f1 in ssh_init () at
> /home/paulo/Downloads/oss-src/libssh-0.4.8/libssh/init.c:47
> #12 0x00007ffff7ba929c in ssh_connect (session=0xc3b8e0)
>
> If I compile it against libgcrypt, it fails all the time due to an
> assertion failure --  ath.c:193: _gcry_ath_mutex_lock: Assertion `*lock ==
> ((ath_mutex_t) 0)' failed.
> libgcrypt  1.4.4-6.1 - x86-64
>
> #0  0x00007ffff5ac79e5 in raise () from /lib64/libc.so.6
> #1  0x00007ffff5ac8ee6 in abort () from /lib64/libc.so.6
> #2  0x00007ffff4fdcaa8 in ?? () from /lib64/libgcrypt.so.11
> #3  0x00007ffff4fdd1c7 in ?? () from /lib64/libgcrypt.so.11
> #4  0x00007ffff4fd75f6 in ?? () from /lib64/libgcrypt.so.11
> #5  0x00007ffff4fd7792 in ?? () from /lib64/libgcrypt.so.11
> #6  0x00007ffff7ba8f7b in ssh_crypto_init ()
>     at /home/paulo/Downloads/oss-src/libssh-0.4.8/libssh/dh.c:115
> #7  0x00007ffff7bab961 in ssh_init ()
>     at /home/paulo/Downloads/oss-src/libssh-0.4.8/libssh/init.c:47
> #8  0x00007ffff7ba5ebc in ssh_connect (session=0xccf260)
>     at /home/paulo/Downloads/oss-src/libssh-0.4.8/libssh/client.c:516
>
> Am I missing any steps?? Is openSSL the best library to compile with??
>
> Any idea is appreciated.
>
> Regards,
>
> Paulo.
>
>