Re: [PATCH 6.1.y] drm/amdgpu: remove two invalid BUG_ON()s

[Greg Kroah-Hartman]

On Wed, Apr 22, 2026 at 04:11:15PM +0200, Christian König wrote:
> Those points are certainly valid.
> 
> I've also up-streamed a patch which completely rejects userspace submissions who try to use the CE.
> 
> The problem is that those BUG_ON() can lead to a deny of service because they crash the whole kernel.
> 
> A BUG_ON() is only justified if it prevents even worse things to happen, e.g. data corruption or it would crash later on anyway just not so obvious on what is wrong.
> 
> Otherwise we should use WARN_ON().

WARN_ON() crashes the kernel as well when panic-on-warn is enabled, as
it is in a few billion Linux systems :(

As this commit is upstream, and in other stable trees, I'll apply this
as it's not nice to have a simple way for userspace to crash the system.

thanks,

greg k-h