GPU opengles glTexImage2D memory out of bounds

li daming

rootfs: 7.2

We detected an array out-of-bounds BUG through the asan software,
In the OpenglES program, we use the cube texture. There is a picture with a width and height of 2*2, the type is GL_RGB8, and a total of 12 bytes. When using the following code, asan detects that the glTexImage2D function has overread 6 bytes.

void *imagePtr = malloc(12);
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + j, i, GL_RGB8, 2, 2, 0, GL_RGB, GL_UNSIGNED_BYTE, imagePtr);

This is asan's log

Please help to confirm whether it is a bug?

Regards,

lidaming

over 3 years ago

0 Erick Narvaez over 3 years ago

TI__Mastermind 36307 points

Hello,

What is this asan software? Is this checking the memory access are in-bounds for your program?

Does this error happen if you do not use this asan software? Does glGetError() report any errors before or after this function call?

Regards,

Erick

0 li daming over 3 years ago in reply to Erick Narvaez

Prodigy 200 points

Hello,

Yes, asan is a memory boundary detection software full name AddressSanitizer.
When not using asan detection, use glGetError() before and after the program will not have error prompts.

Regards,

lidaming

0 Erick Narvaez over 3 years ago in reply to li daming

TI__Mastermind 36307 points

Hello,

Let me try to replicate this on my end. Are you running on Linux or Linux+RTOS (Vision Apps)?

I'll see if I can replicate this.

Thanks,

Erick

0 li daming over 3 years ago in reply to Erick Narvaez

Prodigy 200 points

Thanks,

Linux

Regards,

lidaming

0 Erick Narvaez over 3 years ago in reply to li daming

TI__Mastermind 36307 points

Hello,

I am running this using a wayland application and am seeing different memory leaks, not from the driver but from wayland interface.

What kind of application are you running? Is it simple enough to share? It seems you are directly making calls, like a surfaceless render or similar? I can see the issue when I run in a Vision Apps setup with surfaceless renders.

Regards,

Erick

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GPU opengles glTexImage2D memory out of bounds