Avoid calling wait_event_killable when you are possibly being called from get_signal routine since in that case you end up in a deadlock where you are alreay blocked in singla processing any trying to wait on a new signal. Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky at amd.com> --- drivers/gpu/drm/scheduler/gpu_scheduler.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/scheduler/gpu_scheduler.c b/drivers/gpu/drm/scheduler/gpu_scheduler.c index 088ff2b..09fd258 100644 --- a/drivers/gpu/drm/scheduler/gpu_scheduler.c +++ b/drivers/gpu/drm/scheduler/gpu_scheduler.c @@ -227,9 +227,10 @@ void drm_sched_entity_do_release(struct drm_gpu_scheduler *sched, return; /** * The client will not queue more IBs during this fini, consume existing - * queued IBs or discard them on SIGKILL + * queued IBs or discard them when in death signal state since + * wait_event_killable can't receive signals in that state. */ - if ((current->flags & PF_SIGNALED) && current->exit_code == SIGKILL) + if (current->flags & PF_SIGNALED) entity->fini_status = -ERESTARTSYS; else entity->fini_status = wait_event_killable(sched->job_scheduled, -- 2.7.4
