Hi Mikita,
thanks for sending this out. I have to defer review of the actual change to others more familiar with this code, but I have some feedback for the commit log.
On 2018-06-19 04:45 PM, mikita.lipski@amd.com wrote:
From: Mikita Lipski mikita.lipski@amd.com
Use drm_atomic_get_crtc_state to get the crtc state in case it has been previously freed, that might prevent use-after-free issue.
This patch fixes the bugzilla bug: Bug 199425 - BUG: KASAN: use-after-free in drm_atomic_helper_wait_for_flip_done+0x247/0x260
Bug reports are referenced like this:
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=199425
Also, as the issue exists since at least 4.17, this should have
Cc: stable@vger.kernel.org
in order for the fix to be backported to stable branches.