On Mon, 16 Feb 2026 12:19:01 +0100, Koen Koning wrote:
> Use subsys_initcall instead of module_init for the GPU buddy allocator,
> so its initialization code runs before any gpu drivers.
> Otherwise, a built-in driver that tries to use the buddy allocator will
> run into a kernel NULL pointer dereference because slab_blocks is
> uninitialized.
>
> Specifically, this fixes drm/xe (as built-in) running into a kernel
> panic during boot, because it uses buddy during device probe.
>
> Fixes: ba110db8e1bc ("gpu: Move DRM buddy allocator one level up (part two)")
> Cc: Joel Fernandes <[email protected]>
> Cc: Dave Airlie <[email protected]>
> Cc: [email protected]
> Cc: Peter Senna Tschudin <[email protected]>
> Cc: Matthew Auld <[email protected]>
> Signed-off-by: Koen Koning <[email protected]>
>
Reviewed-by: Joel Fernandes <[email protected]>
--
Joel Fernandes
