[PATCH 1/1] Initialize stackdepot hash tables

[Jani Nikula]

On Sat, 16 Aug 2025, Simon Richter <Simon.Richter at hogyros.de> wrote:
> If the hash table is not initialized when the xe driver attempts to
> generate debug output, the kernel tries to dereference a NULL pointer.

Please be more specific where this happens and how. Is there a better
way? What are we supposed to do?

BR,
Jani.

> ---
>  drivers/gpu/drm/xe/Kconfig.debug | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/xe/Kconfig.debug b/drivers/gpu/drm/xe/Kconfig.debug
> index 01735c6ece8b..70b7a817ed47 100644
> --- a/drivers/gpu/drm/xe/Kconfig.debug
> +++ b/drivers/gpu/drm/xe/Kconfig.debug
> @@ -21,6 +21,7 @@ config DRM_XE_DEBUG
>  	depends on DRM_XE
>  	depends on EXPERT
>  	depends on !COMPILE_TEST
> +	select STACKDEPOT_ALWAYS_INIT if STACKTRACE_SUPPORT
>  	default n
>  	help
>  	  Choose this option to turn on extra driver debugging that may affect

-- 
Jani Nikula, Intel