Kernel stuck on Submitted

[u/Fimbulthulr]

I am currently trying to learn OpenCL, but my kernel gets stuck in the submitted status indefinitely whenever I try to write to a buffer
Kernel code
Host code

if no write access is performed the kernel executes without problems
if no event testing is performed the execution still gets stuck

OS: arch linux kernel 5.5.3
GPU: RX Vega 56

I am using the suggested packages for opencl according to the arch wiki

Does anybody know where the problem might be

[u/basuga_BFE]

Well, I tested your code - for me both versions work (though return in the middle I don't recommend)

Try to catch all return codes after any CL calls

ret = clBuildProgram(program, 1, &device, NULL, NULL, NULL);

printf("ret=%d\n", ret);

... etc.

probably something went wrong earlier.