Re: Crash noticed multiple times using libssh 0.3.4

[Guido Moonen <gmoonen@xxxxxxx>]

Hi All,

I have a similar problem on 0.4.0 windows build, but only in the 
ssh_connect function, solved it by using a mutex around the ssh_connect 
call. haven't seen any other threading issues.

With kind regards,
 Guido

Uday Tennety wrote:
> Hello,
> In our development environment, we noticed that some error in libssh 
> library resulted in crashing our application server. We saw this issue 
> a few times. Our scenario is:
> We are using libssh 0.3.4 and noticed the crash when our libssh client 
> was trying to connect to multiple ssh servers running on various 
> network elements. Before we dive deep into the code, I wanted to find 
> out if there is a known threading issue in 0.3.4 with a libssh client 
> trying to connect to multiple ssh servers?  Also, it would really help 
> if someone can point me in the right direction looking at the error. I 
> really appreciate your time and help.
>
> Thanks,
> Uday.
>
>
>
> Sample Error:
> -------------
>
> [func]              leaving function ssh_disconnect line 690 in 
> /home/public/temp/libssh-0.3.4/libssh/client.c
> [func]             entering function ssh_cleanup line 91 in 
> /home/public/temp/libssh-0.3.4/libssh/session.c
> [func]              entering function channel_free line 724 in 
> /home/public/temp/libssh-0.3.4/libssh/channels.c
> [func]              leaving function channel_free line 755 in 
> /home/public/temp/libssh-0.3.4/libssh/channels.c
> Current time:Fri Jan 15 16:10:29 PST 2010
> Remote host is 10.2.32.95 and remote port is 22[func] entering 
> function ssh_connect line 489 in 
> /home/public/temp/libssh-0.3.4/libssh/client.c
> [func]  entering function ssh_connect_host line 184 in 
> /home/public/temp/libssh-0.3.4/libssh/connect.c
> [func]  leaving function ssh_connect_host line 249 in 
> /home/public/temp/libssh-0.3.4/libssh/connect.c
> [func] leaving function ssh_connect_host line 258 in 
> /home/public/temp/libssh-0.3.4/libssh/connect.c
> #
> # A fatal error has been detected by the Java Runtime Environment:
> #
> #  SIGSEGV (0xb) at pc=0xff351040, pid=5438, tid=149
> #
> # JRE version: 6.0_16-b01
> # Java VM: Java HotSpot(TM) Server VM (14.2-b01 mixed mode 
> solaris-sparc )
> # Problematic frame:
> # C  [libc_psr.so.1+0x1040]  memset+0x140
> #
> # An error report file with more information is saved as:
> # /home/IEM/Repository/hs_err_pid5438.log
> #
> # If you would like to submit a bug report, please visit:
> #   http://java.sun.com/webapps/bugreport/crash.jsp