kern/58385: amdgpu_gart_map maps the same GPU vaddr over and over again

[campbell+netbsd%mumble.net@localhost]

>Number:         58385
>Category:       kern
>Synopsis:       amdgpu_gart_map maps the same GPU vaddr over and over again
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Jul 01 13:15:00 +0000 2024
>Originator:     Taylor R Campbell
>Release:        current, 10
>Organization:
The^WNetBSD^WFoundation
>Environment:
>Description:
Instead of incrementing the GPU virtual page index, amdgpu_gart_map just reuses the same one over and over again in the loop.  This probably doesn't work very well.
>How-To-Repeat:
I dunno, try to draw pictures with amdgpu, I guess
>Fix:
t++