[PATCH v2 4/9] drm/amdkfd: Validate user queue buffers

[Uwe Kleine-König]

#regzbot introduced: 68e599db7a549f010a329515f3508d8a8c3467a4
#regzbot monitor: https://bugs.debian.org/1093124

Hello,

On Thu, Jul 18, 2024 at 05:05:53PM -0400, Philip Yang wrote:
> Find user queue rptr, ring buf, eop buffer and cwsr area BOs, and
> check BOs are mapped on the GPU with correct size and take the BO
> reference.
> 
> Signed-off-by: Philip Yang <Philip.Yang at amd.com>
> Reviewed-by: Felix Kuehling <felix.kuehling at amd.com>

This change made it into v6.12-rc1 as 68e599db7a54 ("drm/amdkfd:
Validate user queue buffers"). A Debian user (Dieter Faulbaum, on Cc)
reported that this change introduced a regression using a gfx803 device
resulting in a HSA exception when e.g. darktable is used. I didn't even
try to understand the problem, but maybe one of you have an idea about
the issue?!

See more details in the Debian bug at https://bugs.debian.org/1093124

Best regards
Uwe
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