Re: Segfault

[William Ahern <william@...>]

On Fri, Aug 30, 2013 at 11:54:53AM +0300, Chris Datfung wrote:
> I have a lua script embedded within another program. The script uses
> socket.http from the lua-socket CentOS package installed via yum. When I
> run my program with the lua script enabled the program dies with a
> segfault. I created a backtrace and saw the following:
> 
> #5  0x00397945 in luaopen_socket_core () from
> /usr/lib/lua/5.1/socket/core.so
> No symbol table info available.
> #6  0x003d7d3a in ?? () from /usr/lib/liblua-5.1.so
> No symbol table info available.
> ...
> 
> Am I missing another package that supplies or updates the symbol table? How
> can I fix this?
> 

I'm not familiar with RedHat, but on Debian based systems installing the
"-dev" version of a package will often install unstripped libraries.

However, the problem is almost certainly in your application, and you've
unhelpfully elided the trace of your code.

Wild guess: this is a stack manangement problem; printf lua_gettop()
wherever you're calling into Lua to see if it's growing.