Re: libssh crash

[Vasuki Gubbi <gkvasuki@xxxxxxxxx>]

Aris,

Thank you for your reply. I call the library from a java application
through jni. So I am not sure how I can use valgrind in java application.
Anyway, I will try to compile libssh with debug information and see if I
can get more help from debugger.

-Vasuki


On Thu, Feb 7, 2013 at 10:58 AM, Aris Adamantiadis <aris@xxxxxxxxxxxx>wrote:

> Hi Vasuki,
>
> This looks like an heap corruption :( The core in buffers was recently
> inspected, we founds some bugs but they were unlikely to be triggable
> like this. It is well possible that the crash in realloc is caused by an
> heap corruption somewhere else in the program (including or not libssh).
>
> Could you try to reproduce this problem within valgrind ? A valgrind
> report would be of big help.
>
> Aris
> Le 7/02/13 19:22, Vasuki Gubbi a écrit :
> > Hello,
> >
> > I am using libssh 0.5.2. Sometimes I am seing a crash in my program.
> > Coredump shows following stack:
> >
> > #0  0x0000003ab2e32a45 in raise () from /lib64/libc.so.6
> > #1  0x0000003ab2e34225 in abort () from /lib64/libc.so.6
> > #2  0x0000003ab2e6fdfb in __libc_message () from /lib64/libc.so.6
> > #3  0x0000003ab2e75716 in malloc_printerr () from /lib64/libc.so.6
> > #4  0x0000003ab2e7abf7 in _int_realloc () from /lib64/libc.so.6
> > #5  0x0000003ab2e7ad55 in realloc () from /lib64/libc.so.6
> > #6  0x00007f050ad6026a in realloc_buffer () from
> > /netsmart/netsmart8.0/lib/libssh.so.4
> > #7  0x00007f050ad603d7 in buffer_add_data () from
> > /netsmart/netsmart8.0/lib/libssh.so.4
> > #8  0x00007f050ad81e3c in ssh_socket_pollcallback () from
> > /netsmart/netsmart8.0/lib/libssh.so.4
> > #9  0x00007f050ad7e826 in ssh_poll_ctx_dopoll () from
> > /netsmart/netsmart8.0/lib/libssh.so.4
> > #10 0x00007f050ad7f6a0 in ssh_handle_packets () from
> > /netsmart/netsmart8.0/lib/libssh.so.4
> > #11 0x00007f050ad66941 in ssh_channel_poll () from
> > /netsmart/netsmart8.0/lib/libssh.so.4
> >
> > Is there any known bug in libssh related to ssh_channel_poll?
> >
> > Regards,
> > Vasuki
>
>
>