When determining the chid for the current context, first check the ctx valid bit. Bug 1485555 Change-Id: I6c3096d800a6cef38b656d525437a2c4f8b45774 Signed-off-by: Mayank Kaushik <mkaushik@nvidia.com> Reviewed-on: http://git-master/r/496140 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Geoffrey Gerfin <ggerfin@nvidia.com> Tested-by: Geoffrey Gerfin <ggerfin@nvidia.com> Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>