[PATCH 0/9] drm: Revert general use of struct drm_gem_object.dma_buf

[Linus Torvalds]

On Fri, 11 Jul 2025 at 10:35, Linus Torvalds
<torvalds at linux-foundation.org> wrote:
>
> I'm hoping the login time timeout / hang ends up being due to a known
> netlink regression, and it just happened to look like a drm issue
> because it exposes itself as a hang at the first graphical login
>
> A netlink regression *might* fit the pattern, in that it might just
> cause first login dependency issues and resulting timeouts.

Well, considering the random timing behavior of this bug, it's hard to
be really sure, but two boots with the alleged "fix" for the netlink
issue made the behavior worse, so it does look like my problems on
this machine were a combination of the drm refcounting issue and the
netlink thing.

I guess I'll have to do a lot more rebooting to be sure, since the
hangs and timeouts have been so random. But the netlink "fixes" did
give me a hang that was very different from the previous ones I've
seen, so I think the drm code is off the hook on this one.

                 Linus