"descriptorbuffer" demo causes GPU hang on RDNA2 with RADV and Mesa 23.3.0

[DiabeticCrab]

I don't know if this is a Mesa bug or an issue with the new offset and size calculations, but reverting e006185 fixes the issue.

System: Kernel 6.6.3 RX 6800 XT (w/ linux-firmware-20231030) Ryzen 5900X 32 GiB RAM Mesa 23.3.0 vanilla libdrm 2.4.118 vulkan-loader 1.3.268

dmesg.txt

[SaschaWillems]

Do you get any validation layer errors?

[DiabeticCrab]

@SaschaWillems Sorry for the late reply! I tried getting validation layers to work using the Vulkan SDK and vkconfig, but to no avail. They don't yield any constructive output.

When I change descriptorbuffer.cpp to have #define ENABLE_VALIDATION true instead of #define ENABLE_VALIDATION false, the system softlocks and doesn't recover from the GPU hang anymore.

Here's what I got. I also made an apidump, but I don't know whether it'll be of any use:

descriptorbuffer_apidump.txt descriptorbuffer_validation_output.txt descriptorbuffer_stdout.txt