System freeze and/or crash in response to invalid sampler array access about amdvlk HOT 8 CLOSED

Hi @amini-allight , I use the latest RADV driver, but I also observe the same Hang issue.

from amdvlk.

Hi @amini-allight , I don't think this is a driver (umd/kmd) issue.
In my humble opinion, you can't specify an invalid index, that is out of the sampler2D objects arrary's range. This against the Spec.

from amdvlk.

and it could cause ungraceful failure states in gaming applications as well.

yea I’m here exactly for this xD

the "hanging issue" can crash your video when you play videogames forcing you to restart you pc.

from amdvlk.

Hi @amini-allight , Under both of the AMDVLK and RADV drivers, all trigger the gpu hang and the system soft recovered after a while.
Actually from the dmesg, hang under AMDVLK and RADV are due to the same reasons.

from amdvlk.

Do you think I should report this as an issue with the kernel instead?

from amdvlk.

You think it's an inherent behavior of the hardware?

In my humble opinion, you can't specify an invalid index, that is out of the sampler2D objects arrary's range. This against the Spec.

Of course, I mentioned that in my original issue. Crashing in response to undefined behavior doesn't violate any specification but it does make development work on the platform significantly harder than it needs to be and that's a problem.

from amdvlk.

@amini-allight Yes, the invalid index will cause the undefined behavior based on the GLSL spec.

There is currently no such extension to support the out-of-bound inspection. So a better way is do more
check in app level or propose new extension.

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I already addressed this in my original issue, there is more to software than conformance to the specification.

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