crash on CBA_fnc_execNextFrame and map close

[Madin5]

Arma 3 Version: 1.94.145977 stable
CBA Version: 3.12.1 stable (steam workshop)

Mods:

- CBA_A3

Description:
Arma crash every time when CBA_fnc_execNextFrame is used in loop on map close event.

Steps to reproduce:

systemChatfnc = {
    systemChat str time;
    [
        {
            if (testFnc) then {
                call systemChatfnc
            };
        },
        []
    ]call CBA_fnc_execNextFrame;
};
testFnc = true;
call systemChatfnc;

open and close map. Just before map close, arma will crash.

Where did the issue occur?
Editor (Singleplayer) / Editor (Multiplayer) (only here tested)

RPT log file:
unnecessary, nothing valuable is there, as the arma crashes completely. Tested on 2 PC.
edit:
rpt and mdmp file:
https://github.com/CBATeam/CBA_A3/files/3511987/Arma.3.zip

[dedmen]

unnecessary, nothing valuable is there, as the arma crashes completely.

Don't think you know what's necessary and what isn't.
Need crash report. rpt,mdmp,bidmp.

[Madin5]

ok, here you go.
I didn't have pc at the moment, so i posted it without it. Also, it's easy to reproduce with provided steps so anyone can do it as wished.

After i test it right now to generate rpt and leave game for a while, i got popup "too many virtual blocks requested" with 51mb+ mdmp. Before i just killed app when it freezes.
Arma 3.zip

[dedmen]

Too many virtual memory blocks requested

Is that the one you are always getting?
That would have been valuable info.

[PabstMirror]

I'm reproducing and it's something to do with skipped frames

[PabstMirror]

When closing the map, eachFrame skips a frame, which breaks execNext frame
We just keep adding to the array, while in the middle of iterating through it
edit: This also means pfeh/waitAndExec are skipping a frame as well,
but probably not a big deal
there also is a chance this would be an issue when loading saved games

[10303 - 10303] loop start nextFrameBufferA // diag_frameno - GVAR(nextFrameNo)
[10303 - true] execNextFrame running        // diag_frameno - mapVis
[10303 - true] systemChatfnc running
[10303 - 10303] adding to nextFrameBufferB
[10303 - 10303] loop end nextFrameBufferA
[10304 - 10304] loop start nextFrameBufferA
[10304 - true] execNextFrame running
[10304 - true] systemChatfnc running
[10304 - 10304] adding to nextFrameBufferB
[10304 - 10304] loop end nextFrameBufferA
"bad frames!!!" // we missed 10305 when closing map
[10306 - 10305] loop start nextFrameBufferA  // no loop end to this
[10306 - true] execNextFrame running
[10306 - true] systemChatfnc running
[10306 - 10305] adding to nextFrameBufferA
[10306 - true] execNextFrame running
[10306 - true] systemChatfnc running
[10306 - 10305] adding to nextFrameBufferA
[10306 - true] execNextFrame running
[10306 - true] systemChatfnc running
[10306 - 10305] adding to nextFrameBufferA

[Madin5]

"Is that the one you are always getting?" Im not at my pc right now, but yesterday i saw this info couple of times. As i often alt tab game, i didn't connect these two.

But i think PabstMirror found problem by now.

[commy2]

When closing the map, eachFrame skips a frame, which breaks execNext frame

Does this frame skipping happen with vanilla? It may be some script using removeMissionEventHandler EachFrame from an EachFrame event.

[Madin5]

Happens even with only CBA, i posted RPT.

You can test it yourself, it's literally ctrl + C ctrl + V one command 😛

[commy2]

Well, it crashes on a mission called ai_modules and it is not clear that there are no scripts inside that mission, for example ones like the one I described.

[Madin5]

I was testing mod on ai_modules, found out that it crashes on map close. I tried to find where i made some error, strip down every line to literally just empty loop, still crash. Then i open vanilla only with CBA, paste simple loop like in Steps to reproduce aaaand here we are now.

Mission was empty, just one player after i delete everything in pursuit to find this bug.