Don't attempt to access memory if the patch context can't be mapped, but print an error message instead. Change-Id: I374dc94d13674e0bd9d081b790f7c0dac834e868 Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: http://git-master/r/1157828 GVS: Gerrit_Virtual_Submit Reviewed-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>