Re: [PATCH] drm/i915/gvt/scheduler: fix potential NULL pointer dereference

From: Gustavo A. R. Silva
Date: Mon Mar 19 2018 - 17:13:28 EST


Hi Chris,

On 03/19/2018 03:38 PM, Chris Wilson wrote:
Quoting Gustavo A. R. Silva (2018-03-19 19:30:53)
_workload_ is being dereferenced before it is null checked, hence
there is a potential null pointer dereference.

Fix this by moving the pointer dereference after _workload_ has
been null checked.

The checks are misleading and not required.

All of them?

if (!workload || !reg_state || workload->ring_id != RCS)
return;

or just the null check on workload ?

Thanks for the feedback.
--
Gustavo