Two Issues with Savestates in MGS4

[Ikotas]

Quick summary

Issue 1: I can't save a savestate after launching the game from a savestate.

Issue 2: I can't save a savestate when I press Ctrl+P.

Details

Game: Metal Gear Solid 4: Guns of the Patriots (BLJM67001)
OS: Windows 11

Issue 1:
After a normal startup, the first savestate is saved successfully.
However, if I quit the game once, boot from a savestate, and then try to save a savestate, the following error is displayed and the app crashes.

RPCS3: Fatal Error

lv2_overlay :: load(): Failed to find file. (vpath=‘/dev_bdvd/PS3_GAME/USRDIR/mgs/mgs4.mself_x2087c28’, offset=0x0)
(in file D:\a\rpcs3\rpcs3\rpcs3\Emu\Cell\lv2\sys_overlay.cpp:107[:23], in function ‘std::function<void_cdecl(void *)> lv2_overlay::load(utils:serial &)’) (error=0x2)
Title: METAL GEAR SOLID 4 GUNS OF THE PATRIOTS (emulation is running)
Build: 0.0.42-19845-03d03b2b Alpha | master
Date: xxxxx
RAM Usage: xxxxx

Note: Although it displays “D:\a\rpcs3\rpcs3\rpcs3\Emu\Cell\lv2\sys_overlay.cpp,” this path does not exist on my PC.

Issue 2:
When I press Ctrl+S while paused with Ctrl+P, the message “Failed to lock SPU state, using SPU ASMJIT will fix it” appears.
If I’m not paused with Ctrl+P, a savestate is saved, but the issue described in Issue 1 occurs.

Configulation:
CPU: SPU Decoder: Recompiler(LLVM)
Advanced: Core: SPU Compatible Savestates Mode: ON

Note: That the Recompiler (ASMJIT) cannot be used because MGS4 does not run properly.

Attach a log file

RPCS3.log.gz

Attach capture files for visual issues

No response

System configuration

No response

Other details

No response

[elad335]

Due to SPU LLVM decoder compatibiliy with save states not allowing to save every emulation state, when emulation is manually paused (Ctrl+P) you will get the saving error but this is not really a bug.
When savestate saving pauses the emulation it makes it compatible with SPU LLVM decoder, but this is not the same as manually pausing (Ctrl+P) - this is an inferior version made for compatibility. Error message can be written for it.

For the MGS4 issue, see #19356

[Ikotas]

I updated to version 19883, and here are the details:

Issue 1:
When I try to launch MGS4, the following error appears and the game won’t start.

Boot Failed

Booting failed: The selected file or folder is invalid or corrupted.

For information on setting up the emulator and dumping your PS3 games, read
the quickstart quide.

Issue 2:
After staying on the main screen for a while, the same error as last time appears and the app crashes.

RPCS3: Fatal Error

Verification failed (object: 0x0)
(in file D:¥a¥rpcs3¥rpcs3¥rpcs3¥Loader¥ISO.cpp:1214[:41], in function 'std :: unique_ptr<fs:file_base,std :: default_delete<fs :: file_base> > iso_archive :: open()') (error=0x2)
Emulation is stopped
Build: 0.0.42-19883-da5d5e50 Alpha | master
Date: xxxxx
RAM Usage: xxxxx

[elad335]

Those are different errors though, you need to upload a log file

[Ikotas]

After updating to version 19845, the issue I reported earlier has been resolved.
However, the original issue has not been resolved.
When I start a new game, save a savestate with Ctrl+S, exit the game, load the savestate, and then save a savestate again with Ctrl+S, the following message appears and the app crashes.

RPCS3: Fatal Error

lv2_overlay :: load(): Failed to find file. (vpath='/dev_bdvd/PS3_GAME/USRDIR/mgs/mgs4.mself_x2087c28', offset=0x0)
(in file D:¥a¥rpcs3¥rpcs3¥rpcs3¥Emu¥Cell¥lv2¥sys_overlay.cpp:107[:23], in function 'std :: function<void_cdecl(void *)> Iv2_overlay :: load(utils:serial &)') (error=0x2)
Title: METAL GEAR SOLID 4 GUNS OF THE PATRIOTS (emulation is running)
Build: 0.0.42-19845-03d03b2b Alpha | master
Date: xxxxx
RAM Usage: xxxxx

RPCS3.log.gz

[Ikotas]

After updating to 19884, I was able to create a Savestate after launching the game from a Savestate.
Thank you very much.
However, since another issue has arisen, I am creating a new ticket.