Crash with SZ_GetSpace overflow on netchan -> message

[raulitop]

Yes, I already search the error and nothing to solve this found.
only people complaining about this or non-useful solutions.

There are two problems:

1. Crash with SZ_GetSpace overflow on (Player Nick)
2. Crash with SZ_GetSpace overflow on netchan -> message

First crash I solved it by hooking Con_Printf on ReHLDS and kicking the player who committed that overflow more than 10 times.
Second crash I don't know how to discover what is causing it.

It seems be caused by so many HUDs / messages / information sending to clients. By that's all.
Plugins aren't sending an incorrect message or similar.

That's my plugin to solve first crash:

#include <amxmodx>
#include <reapi>

new g_iWarns[33]
new Float:g_fLastWarn[33]

new g_LogNetchan

public plugin_init()
{
    register_plugin("SZ_GetSpace Overflow fix", "0.1", "RauliTop")

    register_event("HLTV", "event_new_round", "a", "1=0", "2=0")

    // to avoid getting console message when server starts up
    set_task(20.0, "enable_Con_Printf_hook")
}

public client_putinserver(id)
{
    g_iWarns[id] = 0
    g_fLastWarn[id] = 0.0
}

public event_new_round()
{
    g_LogNetchan = 0
}

public enable_Con_Printf_hook()
{
    RegisterHookChain(RH_Con_Printf, "RH_Con_Printf_Pre", 0);
}

public RH_Con_Printf_Pre(const string[])
{
    // to be able log_amx without doing a loop crash
    new iContain = contain(string, ".amxx")
    if (iContain > -1)
        return HC_CONTINUE;

    iContain = contain(string, "SZ_GetSpace: overflow on ")
    if(iContain == -1) {
        return HC_CONTINUE;
    }

    const iLenOfPattern = 25 // length of "SZ_GetSpace: overflow on "
    new szName[32]
    copy(szName, charsmax(szName), string[iContain + iLenOfPattern])
    replace_all(szName, charsmax(szName), "^n", "") // remove 'next line' from name string

    new id = get_user_index(szName)
    if (!id) // name = netchan->message
    {
        g_LogNetchan++

        if (g_LogNetchan <= 3) // max 3 lines per round
            log_to_file("overflow.log", "NOT FOUND overflow on %s", szName)

        return HC_SUPERCEDE; // block show message at console
    }

    g_iWarns[id]++
    log_to_file("overflow.log", "Warns: %d | overflow on %s", g_iWarns[id], szName)

    new Float:LastTime = get_gametime()
    if (g_iWarns[id] >= 10 && LastTime - g_fLastWarn[id] <= 1.5)
    {
        new iUserId = get_user_userid(id)
        server_cmd("kick #%d ^"Unrealiable channel overflowed^"", iUserId)

        log_to_file("overflow.log", "kicked %s", szName)
    }

    g_fLastWarn[id] = LastTime

    return HC_SUPERCEDE; // block show message at console
}

 

[fl0wer]

good soup if problem not printed then there isn't.

 

[raulitop]

good soup if problem not printed then there isn't.

No, if we kick the player, we prevent server crash.

But it's crashing because of netchan message too.

The hook is used to get the event LOL

 

[Denzer]

The hook is used to get the event LOL

Добавили хук чтобы такие как он говнокодили и костылили. ?

 

[raulitop]

Добавили хук чтобы такие как он говнокодили и костылили. ?

Yeah, tell me how to do it without this hook.

You are being rude and didn't understand that crash with nickname already has been solved kicking client.

 

[Limbooc]

Как вариант в коде

if (!id) // name = netchan->messag
{

}

можно включить булевую на true, и во-всех плагинах где участвует message_begin, hud, dhud, chat_color_print и тд, просто дать ограничение на показ и тд на какое-то время example if(true) return 0

тем самым решаем;
1) спам всяких дхуд, info и тд
2) нормализация передача пакетов




делать проверку если SZ_GetSpace: overflow on не поступало через N секунд то вырубить булевую (false) и дальше показывать инфу

Спойлер: ssss

if (!id) // name = netchan->message
{
    g_LogNetchan++

    if (g_LogNetchan <= 3) // max 3 lines per round
    {
        log_to_file("overflow.log", "NOT FOUND overflow on %s", szName)
        g_iUserOverflow[id] = true;
    }

    return HC_SUPERCEDE; // block show message at console
}

stock dHudMessage(index, szText)
{
    if(g_iUserOverflow[index])
        return 0;
    
    set_dhudmessage(0, 255, 0, -1.0, -1.0, 2, 1.0, 1.0, 0.1, 1.0, false);
    show_dhudmessage(index, "%s", szText);
    
    return 1;
}

 

[raulitop]

Limbooc
When the overflow is caused by netchan->message, there's no id.

Server is crashing once a month.

I am continuing to find the solution

 

[raulitop]

I tried to reduce this problem reducing HUDs, DHUDs calls.
Also delete some message_begin on plugins.

Nothing of this worked.

Server is crashing once a month, once a week, on the same day 2 times...
It's randomly.

Don't know how make. It's really frustating.

Anybody has some clue?

 

[jocasrb]

You are trying with this code to hook crashes? Isnt it better to disable plugin by plugin and check what cause it and repair ofc ?

 

[raulitop]

You are trying with this code to hook crashes?

Yes. Hooking this crash and kicking the client that overflow the server works.
But I can't do nothing when the overflow is in: netchan -> message

Isnt it better to disable plugin by plugin and check what cause it and repair ofc ?

No, the server crash randomly. once a month, once a week, on the same day 2 times...
It's difficult to know what plugin is causing it, taking into account that is a big Zombie Mod.
All plugins are already reviewed, but nothing strange found.

The question is: anybody has a way to cause this error? a code example will be great
Searching in the Internet the information is confusing and answers are not 100% sure.

 

[Teodor]

@raulitop,what zp? 4.3 or 5.0.8? zp 4.3 trash, if 4.3 or 5.0.8 delete everything and re-insert gradually making your edits.

overflow messages are normal, can occur when the player closed the client in a peculiar way or minimize the game window, it is also important to work correctly with hud and hud.

 

[raulitop]

@raulitop,what zp? 4.3 or 5.0.8? zp 4.3 trash, if 4.3 or 5.0.8 delete everything and re-insert gradually making your edits.

overflow messages are normal, can occur when the player closed the client in a peculiar way or minimize the game window, it is also important to work correctly with hud and hud.

zp 4.3 edited from 2011-2022. But theses messages start to happen after a bigs updates on mod last year.
Overflow messages are normal yes, but not the server crash because of them.

Please, this type of comments doesn't help.
I need an answer of people that already solved it or has similar problems.

 

[Teodor]

raulitop, i had a similar problem on 4.3, zp 4.3 structure is disgusting,
the best solution is to put 5.0.8 and make your changes

 

[raulitop]

The most technical comment I found about this is:

SZ_Getspace Overflow on netchan
A bad vague one - some server error caused by a bad map. In one situation of this I know of, it was solved by copy/pasting the ENTIRE level over into another .rmf file; when another time it occured it was solved by reducing the number of doors that used the same sound. In a third it seems it was caused by too many player start entities?, and in a fourth by a bad .wav file. But really I don't know if this was really caused by the WAVs, or by bad brushes, ghost entitys, or what. good luck figuring it out!

Source: https://www.slackiller.com/tommy14/errors.htm#portalclip