Invalid memory access ошибка

The Invalid Memory Access error results when you’re trying to access native-side memory that you haven’t properly allocated.

Exactly how that memory gets allocated can occur a few ways and you must hunt them down to figure out your problem… you have to peel off a few layers of the onion to get to the actual problem.

The first thing to check is your JNA type mappings. Structure sizes are notoriously at fault here. However, your structure looks correct.

The next likely source is that you’ve not allocated the native-side memory for the structures themselves; this is a side effect of your choice to use ByReference to deal with the structures. If you go this route you’ve got a lot more overhead. However, this is all unnecessary; JNA does all the heavy lifting under the hood and when you pass a Structure as an argument to a JNA library, it really sends just the pointer to the native side… but handles the memory allocation, etc.

You should just reference the TLV structure directly in your code.

In the library:

int EMV_ApplicationInit(AppdefLibrary_EMVCT.EMV_HANDLE hEMV, TLV tlv_Appl, TLV tlv_AIP);

In your access code:

TLV tlv_Appl=new TLV();
TLV tlv_AIP=new TLV();

System.out.println(AppdefLibrary.INSTANCE.ApplicationInit(hEMV, tlv_Appl, tlv_AIP));

If fixing this doesn’t solve your problem, another possibility is that while you’ve got the memory allocated for your Java structures, the C method refers internally to other memory and the API expects you to have initialized your variables in some way so that they point to (allocated) memory elsewhere. Uninitialized pointers are a likely culprit, especially if intended as «input» from the user rather than simply a callback that the function will populate. You need to carefully review the API documentation to see if this is the case and if it requires any of the pointers to be initialized.

For example, a null HANDLE may not be acceptable to the method; it may require you to initialize the HANDLE by some other method (and later release it).

Or, you may have needed to do something to the TLV structures to initialize their internal pointer members. The val field, for example, points to a «byte string». Does the API expect you to have allocated that already and provided the length of the memory you allocated (e.g., Pointer val = new Memory(256); tlv_Appl.val = val; tlv_Appl.len = 256;)? What exactly is the _lenptr pointing to (the comment indicates an int field but it’s a char pointer, that seems odd)?

Also, as an aside, 4.0.0 is a much older version of JNA; 4.2.2 is the current version and you should use it unless you need an older version for some other reason.

Also as another aside, JNA already includes a mapping for WinNT.HANDLE which may be preferable to rolling your own.

2020-х Valorant — это бесплатная видеоигра-шутер от первого лица, разработанная и опубликованная Riot Games и доступная только для Windows. Первоначально его дразнили под кодовым названием «Проект А» еще в 2019 году, затем началась закрытая бета-версия, а затем, наконец, он стал официально доступен для всех. Тем не менее, похоже, что есть некоторые проблемы или ошибки, которые все еще беспокоят игроков, и ошибка Valorant Invalid Access to Memory Location является одной из них.

В соответствии с несколько отчетов на Reddit, похоже, что конкретная ошибка памяти появляется всякий раз, когда игроки пытаются запустить игру Valorant. Некоторые отчеты предполагают, что закрытие нежелательных приложений, работающих в фоновом режиме, может полностью решить проблему. Эта ошибка обычно возникает всякий раз, когда игроки Valorant пытаются запустить игру с минимальным объемом оперативной памяти около 4 ГБ. Это в основном вызывает проблемы с запуском игры.

Исправлено: ошибка недействительного доступа к памяти Valorant

Содержание страницы

  • Исправлено: ошибка недействительного доступа к памяти Valorant

    • 1. Закройте фоновые задачи
    • 2. Обновите графический драйвер
    • 3. Обновите Windows
    • 4. Обновить Valorant
    • 5. Попробуйте обновить текущий размер ОЗУ

Исправлено: ошибка недействительного доступа к памяти Valorant

Закрыв нежелательные приложения в системе и освободив место в памяти, вы можете исправить ошибку недопустимого доступа к области памяти на ПК. Вы также можете попробовать увеличить оперативную память до 6/8 ГБ, что может улучшить игровой процесс. Ниже мы поделились всеми возможными обходными путями, которые должны решить эту проблему за вас. Итак, не теряя больше времени, давайте перейдем к делу.

1. Закройте фоновые задачи

Прежде всего, вы должны попробовать закрыть все ненужные фоновые задачи в системе, которые могут потреблять много системных ресурсов. Проблемы с системными ресурсами могут вызывать лаги, сбои, ошибки и т. Д. В игре. Постарайтесь как можно больше освободить место для хранения и памяти.

  • нажмите Ctrl + Shift + Esc ключи, чтобы открыть Диспетчер задач.
  • Нажать на Процессы tab> Выберите задачу, которую хотите закрыть.
  • После выбора нажмите Завершить задачу. Обязательно выполняйте шаги для каждой задачи индивидуально.
  • После этого просто перезагрузите компьютер, чтобы немедленно изменить эффекты.

2. Обновите графический драйвер

В большинстве случаев устаревшая или поврежденная версия графического драйвера на вашем ПК с Windows может вызвать несколько проблем с запуском игры или игровым процессом. Рекомендуется проверить наличие последних обновлений и установить их как можно раньше. Последняя сборка всегда содержит исправления ошибок и улучшения. Сделать это:

  • Нажмите Windows + X ключи, чтобы открыть Меню быстрых ссылок.
  • Теперь нажмите на Диспетчер устройств из списка> Двойной щелчок на Видеоадаптеры.
  • Щелкните правой кнопкой мыши на выделенной видеокарте, которую вы используете.
  • Далее выберите Обновить драйвер > Выбрать Автоматический поиск драйверов.
  • Если доступно обновление, система автоматически загрузит и установит его.
  • После этого перезагрузите компьютер, чтобы изменения вступили в силу.

Должны прочитать:Как исправить ошибку Valorant VAN9001 на ПК

3. Обновите Windows

Всегда лучше обновить сборку ОС Windows до последней версии, чтобы улучшения системы и общие исправления ошибок могли заменить старую или содержащую ошибки версию системы. Для этого:

  • Нажмите Windows + I ключи, чтобы открыть Настройки Windows меню.
  • Далее нажмите на Обновление и безопасность > Выбрать Проверить обновления под Центр обновления Windows раздел.
  • Если доступно обновление функции, выберите Загрузить и установить.
  • Подождите некоторое время, пока обновление не будет завершено.
  • Наконец, перезагрузите компьютер, чтобы изменения вступили в силу немедленно.

4. Обновить Valorant

Попробуйте перезагрузить систему и запустить игру Valorant через Riot Client, чтобы проверить, доступно ли обновление. Если доступно, убедитесь, что вы правильно установили обновление, а затем снова проверьте наличие проблемы. Иногда устаревшая или содержащая ошибки версия патча может вызвать несколько проблем с запуском или запуском игры.

5. Попробуйте обновить текущий размер ОЗУ

Также рекомендуется попробовать обновить текущий размер ОЗУ до большего размера (более 4 ГБ), чтобы игра Valorant работала правильно. Если ваш компьютер поддерживает более высокое обновление ОЗУ, увеличьте размер ОЗУ как минимум до 8 ГБ для оптимальной игровой производительности, не считая совместимых ЦП и ГП.

Вот и все, ребята. Мы предполагаем, что это руководство было для вас полезным. Для дальнейших запросов вы можете оставить комментарий ниже.

This guide will tell you how to fix Invalid Memory Access in PPSSPP Emulator.

1- First of all, make sure that you are using the latest version of the PPSSPP emulator. As on older versions, these types of errors come more.

2- After that, go to the PPSSPP folder where it is installed. After entering the PPSSPP win folder, go into the memstick and delete the PSP folder.

3- Now, click on the link: https://www.mediafire.com/file/5jl4mw… to download the new PSP folder.

4- Once the download completes, unzip it and paste it into the memstick folder from where you have deleted the previous PSPS folder.

5- After that, paste this same folder into the PSP folder documents by deleting the old folder.

6- Now, open your PPSSPP emulator, go to settings, and change your backend to Direct 3D 11.

7- Go back to your memstick folder and delete the PSP folder from here. Also, you have to delete the PSP folder from the documents.

8- Reopen the emulator, click on settings and then change the backend to Vulkan. If Vulkan does not fix your issue, you must set the backend to Direct 3D 9.

9- If you are still facing the problem, you need to go back to settings and navigate the system. Make sure that the Ignore bad memory access is turned ON.

10- After that, scroll down and checkmark the fast memory. Then you have to set the change emulated PSP’s CPU clock to 129.

11- Launch the game and see if this fixes your issue. If you are still getting the problem, then you need to set this back to 0.

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and
privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
Sign in
to your account

Closed

PulseBeat02 opened this issue

Apr 15, 2021

· 27 comments

Comments

@PulseBeat02

Hello, while using VLCJ in my library, I noticed I encountered an issue called «Invalid memory access». The full stacktrace is like so:

Caused by: java.lang.Error: Invalid memory access
	at com.github.pulsebeat02.vlcj.binding.LibVlc.libvlc_media_player_set_media(Native Method) ~[?:?]
	at com.github.pulsebeat02.vlcj.player.base.MediaApi.applyMedia(MediaApi.java:424) ~[?:?]
	at com.github.pulsebeat02.vlcj.player.base.MediaApi.changeMedia(MediaApi.java:405) ~[?:?]
	at com.github.pulsebeat02.vlcj.player.base.MediaApi.prepare(MediaApi.java:85) ~[?:?]
	at com.github.pulsebeat02.vlcj.player.base.MediaApi.play(MediaApi.java:96) ~[?:?]
	at com.github.pulsebeat02.minecraftmedialibrary.video.player.VLCJIntegratedPlayer.start(VLCJIntegratedPlayer.java:144) ~[?:?]
	at com.github.pulsebeat02.deluxemediaplugin.command.VideoCommand.startVideo(VideoCommand.java:282) ~[?:?]
	at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:262) ~[patched_1.16.5.jar:git-Paper-553]
	at com.github.pulsebeat02.deluxemediaplugin.command.CommandHandler.onCommand(CommandHandler.java:62) ~[?:?]
	at com.github.pulsebeat02.deluxemediaplugin.command.BaseCommand.execute(BaseCommand.java:59) ~[?:?]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:159) ~[patched_1.16.5.jar:git-Paper-553]

After some Googling, I saw another issue report say that the reason due to this is because that something is null. After debugging using Intellij, indeed, the MediaAPI had a null media.

debug

Now that I have found the issue, I wonder how would I instantiate such a media object? The exception is thrown when this line (yes it is Minecraft, don’t judge (: ) is executed (with the play method). How would I prevent the media object from being null?

I have verified that I have loaded the VLC binaries by adding them to the native search path. After all, this error wouldn’t be thrown if the binaries weren’t loaded into the classpath. I was suspecting that there may be something fishy going on in the vlc binaries I had, or I forgot to use some Java code to instantiate it.

@caprica

Helps if you say what version of vlcj you’re using, so I can match up the line numbers.

@caprica

Nevermind, I can see what’s going wrong.

It is failing when it tries to create the native media instance via «new path» or «new location». Which of those method it calls depends on whether it’s a local file or a network URL.

Anyway, what would really help here is to see what MRL you are passing to play(). That MRL can not be opened.

Now, vlcj should handle this a bit better by not crashing the JVM, and I will make a small change to improve that, but you need to investigate why the MRL you are playing is seemingly invalid in some way.

Post a representative MRL here if you like.

@caprica

I jumped the gun a bit here. vlcj already has a lot of null protection around this.

I do now need to which version of vlcj you’re using.

@PulseBeat02

According to my pom.xml, I am using VLCJ 4.6.0. Should I update to 4.7.1?

Also, I have noticed that my VLCJ bindings are only 4.1.0 (which are quite old). I am only using the bindings to set the plugin variable and declare a new instance as shown here (basically the same as what NativeDiscovery does). I should probably update that to 4.5.0 as well.

@caprica

Presumably you mean vlcj-natives, no, what you have is correct.

@caprica

You need to please show me an example of the MRL you are passing to play().

@PulseBeat02

In terms of MRL, I usually pass in just an absolute path to the video file (for example: «C://Videos//myvideo.mp4»).

@caprica

There is something weird going on, because I can not see in the code how that can be null — I suspect if you use your debugger and look at the right place, not the media instance in your screenshot, it will tell a different story.

Anyway, the actual problem… you are using Java naming conventions on a native Windows platform. For Java apps that is of course OK, but you need to realise your filename is being passed to a Windows native library, and on Windows the forward slashes are not valid for filenames. So, change your forward slashes to backslashes (you likely have to escape them so use double back-slashes), and it should work.

@caprica

I thought I had documented this gotcha somewhere, perhaps it needs to be more prominent.

@PulseBeat02

Hm. Thank you for reminding me of that, but I’m not sure if that is what is causing the issue. In my video player, I pass a File object into it as shown here. The super method is what contains the String MRL (which in this case it is File#getAbsolutePath). I thought that FIle#getAbsoluteMethod should solve this issue (as that is being used as the mrl)

Either way, I would need to debug more around the mrl. I will see if I could update you with more information.

One last question, however. Could this issue be related to VLC binaries? I am using the latest (3.0.12) VLC binaries as in right now for Windows (and running it on Windows). They were the exact ones copied from my VLC folder. Could that be an issue?

@caprica

Did you try replacing the Java convention forward-slashes with the native convention back-slashes?

@caprica

It would be very useful if you could put your breakpoint as shown in this screenshot:

image

I suspect that it is NOT in fact null in vlcj code, and that the native library is crashing because of the forward slashes.

@PulseBeat02

It would be very useful if you could put your breakpoint as shown in this screenshot:

image

I suspect that it is NOT in fact null in vlcj code, and that the native library is crashing because of the forward slashes.

Thank you. I will try that out tonight.

@PulseBeat02

After some debugging, I found that the path I used was indeed correct:
C:UsersBrandon LiDesktopserverpluginsDeluxeMediaPluginmmlvideo.mp4
I don’t think it’s a path issue. I am now going to set the breakpoint in the screenshot you sent and see what happens.

@PulseBeat02

Yikes, it looks like Intellij debugger won’t properly work for decompiled code (from the vlcj library). The ide won’t step into the internal code properly. I will try my best and see what I can do.

@caprica

Well, add the vlcj sources to your project, that should be possible. In my experience IntelliJ is quite good at debugging with decompiled classes, but since vlcj is open source, just add the source to your project.

I would also make 100% sure the space character in your filename is not causing a problem — this is unlikely, but it’s another thing to eliminate.

@PulseBeat02

It appears to just be crashing on the exact line you mentioned in the breakpoint. According to the debugger, the mediaPlayerInstance and mediaInstance are defined within that method. When I step into that code (which is a native method), it just throws the exception there. The native method in LibVLC is called «libvlc_media_player_set_media», and it’s likely probably some issue within the VLC binaries I have.

Could it be because my options are null? The path should be okay but I will test.

@caprica

Your original stacktrace, and the screenshot I posted showing you showing the line to breakpoint — that is the only relevant place to check for this supposed null value, which was the premise of your original post. You will see the line numbers in your stacktrace match up with the code in the screenshot I posted.

IMO, nothing in the vlcj classes can be null here, but inspecting the variables at the breakpoint I suggested will show it to be so or not.

libvlc_media_player_set_media uses a native opaque handle created from your «c:…» MRL, and that is what is passed to LibVLC.

It is extremely unlikely for there to be any problem specifically with this native method tbh.

@PulseBeat02

After some inspection, I found that none of the Api classes (inputApi, overlayApi, etc) in the mediaPlayer variable are null. Like so:

debugger

I have verified that the path isn’t causing the issue because when I drag the video into my C drive and enter in C:video.mp4, the same error persists.

There is likely something not on VLCJ side or VLC’s side, but I’m not sure what could be causing it. Should I close the issue?

@caprica

Those API classes being not null is a complete irrelevance, I’m not sure why you keep avoiding the specific point I made with my screenshot — the mediaInstance variable, or its contents, is the only thing that could possibly be null (but even then I’m pretty sure it can’t be).

And each time you post, I’m sorry, it raises more questions than answers — you now say in your latest post that you enter «c:video.mp4», but you really need «c:\video.mp4». Which did you actually do?

@caprica

Can VLC itself play your file?

@PulseBeat02

I’m sorry. I just didn’t quite understand what you were trying to say, and I kept mistyping the paths. To be more specific, the paths are correct, I just keep typing them wrongly in Github (not copying and pasting but typing by hand).

About the mediaInstance variable, it seems to not be null. According to my debugger. This kind of makes me stuck.

For your second part of the question, yes, VLC can play my file. I dragged my mp4 file into VLC Media Player and it managed to load and successfully play the video with no issues.

At this point, I am going to analyze the libvlc.dll I have by seeing if it is valid or not by opening it in possibly VSC. Perhaps downloading the file may have had some corruption. I am not sure, but this could be the only possible way because VLCJ or VLC itself cannot cause it, the path is valid, and the mediaInstance variable isn’t null.

@PulseBeat02

Wow. I am stupid! I just realized I set the path for VLC_PLUGIN_PATH to the wrong path. I am so sorry for wasting your time. That seemed to fix it all.

@caprica

Well, OK, but with the correct usage of vlcj setting VLC_PLUGIN_PATH should never be needed.

@PulseBeat02

I was using a custom installation where I had the binaries installed (but they are in a different location). So I was just doing the loading process manually this way. Do you know the proper way to do it if the binaries are located in another place?

@caprica

Write a custom DiscoveryDirectoryProvider and drop it in your classpath (uses the Java Service Loader mechanism).

@PulseBeat02

2 participants

@caprica

@PulseBeat02


#1

Пользователь офлайн
 

Отправлено 09 января 2022 — 00:44

  • Пользователь

Краш сервера

MYSQL:

[01/08/22 22:15:41] [ERROR] signal 11 (SIGSEGV) catched; shutting log-core down (errno: 0, signal code: 1, exit status: 0)

0


#2

Отправлено 10 января 2022 — 19:16

  • Evil Scripter

LoadPlayerInventory из инклуда inventory.inc покажи. И отдельно выдели строку 254 в этом коде.

То же самое с SavePlayerInventory и строкой 221

0


#3

Отправлено 10 января 2022 — 21:46

  • Пользователь

Просмотр сообщенияDeimoS (10 января 2022 — 19:16) писал:

LoadPlayerInventory из инклуда inventory.inc покажи. И отдельно выдели строку 254 в этом коде.

То же самое с SavePlayerInventory и строкой 221

Решено, спасибо :rolleyes:

0

Понравилась статья? Поделить с друзьями:

Не пропустите эти материалы по теме:

  • Яндекс еда ошибка привязки карты
  • Invalid length nintendo switch ошибка
  • Interface dme ews ошибка
  • Invalid io boost state ошибка
  • Interface auto detection routine failed cascade ошибка

  • 0 0 голоса
    Рейтинг статьи
    Подписаться
    Уведомить о
    guest

    0 комментариев
    Старые
    Новые Популярные
    Межтекстовые Отзывы
    Посмотреть все комментарии