Re: [PATCH] drm/i915/kvmgt: avoid dereferencing a potentially null info pointer

On Thu, Mar 23, 2017 at 12:22:30PM +0000, Colin King wrote:

From: Colin Ian King colin.king@canonical.com

info is being checked to see if it is a null pointer, however, vpgu is dereferencing info before this check, leading to a potential null pointer dereference. If info is null, then the error message being printed by macro gvt_vgpu_err and this requires vpgu to exist. We can use a null vpgu as the macro has a sanity check to see if vpgu is null, so this is OK.

It is never NULL, it gets checked by its only caller. -Chris