seeStakeoutsignal caught: Segmentation fault

[JBERT]

12 hours ago, nbohr1more said:

Yes please.

I have uploaded savegames here : https://hilbert.systella.fr/public/save.tar.gz

[nbohr1more]

Thank you!

Hmm...

It seems that you replicated this on 2.09 beta 2.

You should use the new "installer" and choose "custom version" to select the most recent beta ( 2.09 beta 4 )

I will try regressing to beta 2 this evening so I can verify further.

[stgatilov]

@nbohr1more , why don't you downgrade to beta209-02 yourself?
I'm uploading all PDB files to google drive.

I have reproduced some sort of crash using the provided savegame.

I loaded the quicksave before stairs, and went down. Nothing happened.
I left the game and went to take shower when I returned, it has already crashed. No idea what happened and how long it took.
It happened to me on Windows.
 

Here is the stacktrace:

>    TheDarkModx64.exe!ai::State::OnVisualStimBlood(idEntity * stimSource, idAI * owner) Line 3575    C++
     TheDarkModx64.exe!ai::State::DelayedVisualStim(idEntity * stimSource, idAI * owner) Line 1161    C++
     TheDarkModx64.exe!idClass::ProcessEventArgPtr(const idEventDef * ev, __int64 * data) Line 1047    C++
     TheDarkModx64.exe!idEvent::ServiceEvents() Line 598    C++
     TheDarkModx64.exe!idGameLocal::RunFrame(const usercmd_t * clientCmds, int timestepMs) Line 3392    C++
     TheDarkModx64.exe!idSessionLocal::RunGameTic(int timestepMs) Line 3070    C++
     [Inline Frame] TheDarkModx64.exe!idSessionLocal::RunGameTics() Line 3112    C++
     TheDarkModx64.exe!idSessionLocal::FrontendThreadFunction() Line 3158    C++
     [Inline Frame] TheDarkModx64.exe!idSessionLocal::StartFrontendThread::__l2::<lambda_6b7828b12cf509cf76fb3406570c8cd1>::operator()(void *) Line 3252    C++
     TheDarkModx64.exe!<lambda_6b7828b12cf509cf76fb3406570c8cd1>::<lambda_invoker_cdecl>(void * x) Line 3254    C++

• owner is "watchGuard4"
• stimSource is "CBloodMarker_atdm:blood_marker_43"

When I look at stimSource, its _spilledBy member is pointing to some location, which is apparently deleted.

To be honest, I am quite surprise at the amount of game code which uses raw long-living entity pointers without any care that it can be deleted. EntityPtr should be used almost everywhere for this purpose.

UPDATE: Yes, reproduced it from the first take. Waited in shadows immediately after the stairs for at most 30 seconds. Same stack trace.

[stgatilov]

I think here is what happened:

1. @JBERT hurt the guy named "Mozir" enough to generate a blood spill. (UPDATE: confirmed that this blood spill was Mozir's).
2. When you go down the stairs, "spawnGuards2" script function is called, which removes "Mozir" entity.
3. Something happens to the blood spill (e.g. it gets noticed by someone), and the game crashes on dangling pointer.

@JBERT, did this issue blocked you from finishing the mission?
Do you need workaround to let you proceed from this save?

[JBERT]

31 minutes ago, stgatilov said:

I think here is what happened:

1. @JBERT hurt the guy named "Mozir" enough to generate a blood spill. (UPDATE: confirmed that this blood spill was Mozir's).
2. When you go down the stairs, "spawnGuards2" script function is called, which removes "Mozir" entity.
3. Something happens to the blood spill (e.g. it gets noticed by someone), and the game crashes on dangling pointer.

@JBERT, did this issue blocked you from finishing the mission?
Do you need workaround to let you proceed from this save?

I cannot finish this mission as TDM aborts on segfault. If you have a workaround, I can try it.

[PranQster]

Redacted post. I had replied to an older post and was not caught up with reality.

Edited January 29, 2021 by PranQster

[stgatilov]

15 hours ago, JBERT said:

I cannot finish this mission as TDM aborts on segfault. If you have a workaround, I can try it.

You can download updated save from here.

The easiest way to fix the problem is to open game console and execute "remove CBloodMarker_atdm:blood_marker_43".
It would remove the blood entity from the game, so it won't be able to cause crash in future.

[stgatilov]

I can reproduce the issue perfectly from the savegame if I start TDM not from VC.
However, I cannot reproduce it from fresh start. So I can try to fix it, but I won't be able to verify that the fix is working (raw object pointer and EntityPtr are represented differently in the save file).

[stgatilov]

Issue: 5515