Segfault from protected_function args push about sol2

[roman-orekhov]

There's a big problem with Lua references: they are not thread safe. No lua_lock used when doing luaL_ref and luaL_unref. So unless you protect Lua registry usage with locks yourself, you will get strange crashes while creating/destroying sol references from several threads. You can debug it with looking at the registry with my script. Note that the registry sometimes gets corrupted well before the crash. Also note that using the references (lua_rawgeti) seems thread safe.

[checkraisefold]

There's a big problem with Lua references: they are not thread safe. No lua_lock used when doing luaL_ref and luaL_unref. So unless you protect Lua registry usage with locks yourself, you will get strange crashes while creating/destroying sol references from several threads. You can debug it with looking at the registry with my script. Note that the registry sometimes gets corrupted well before the crash. Also note that using the references (lua_rawgeti) seems thread safe.

The problem is that the 'RosaServer' project this thing is happening in is entirely single threaded except for the thread that handles console input, and it just uses detours on the game dedicated server it's a mod for. So there's no cross-thread refs going on here