Re: [PATCH] Revert "drm/ast: Zero is missing in detect function"

On 10/15/21 2:25 AM, Thomas Zimmermann wrote:

Commit 572994bf18ff ("drm/ast: Zero is missing in detect function") prevents some systems from booting. Seen on Supermicro Super Server/X10SRL-F, BIOS 3.3 10/28/2020 . There's further a bug that results in

KASAN: use-after-free in enqueue_timer+0x4f/0x1e0

which is also triggered by commit 572994bf18ff ("drm/ast: Zero is missing in detect function").

That last statement is technically wrong. Like I said, in my case [1], the bad commit is commit aae74ff9caa8 ("drm/ast: Add detect function support")

Please revert aae74ff9caa8.

Thanks,

Kim

[1] https://www.spinics.net/lists/dri-devel/msg318039.html