From: Andrey Grodzovsky andrey.grodzovsky@amd.com

[ Upstream commit 0b10ab80695d61422337ede6ff496552d8ace99d ]

Wait for all dependencies of a job to complete before killing it to avoid data corruptions.

Signed-off-by: Andrey Grodzovsky andrey.grodzovsky@amd.com Reviewed-by: Christian König christian.koenig@amd.com Link: https://patchwork.freedesktop.org/patch/msgid/20210519141407.88444-1-andrey.... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/scheduler/sched_entity.c | 5 +++++ 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/scheduler/sched_entity.c b/drivers/gpu/drm/scheduler/sched_entity.c index 1a5153197fe9..57f9baad9e36 100644 --- a/drivers/gpu/drm/scheduler/sched_entity.c +++ b/drivers/gpu/drm/scheduler/sched_entity.c @@ -235,11 +235,16 @@ static void drm_sched_entity_kill_jobs_cb(struct dma_fence *f, static void drm_sched_entity_kill_jobs(struct drm_sched_entity *entity) { struct drm_sched_job *job; + struct dma_fence *f; int r;

while ((job = to_drm_sched_job(spsc_queue_pop(&entity->job_queue)))) { struct drm_sched_fence *s_fence = job->s_fence;

+ /* Wait for all dependencies to avoid data corruptions */ + while ((f = job->sched->ops->dependency(job, entity))) + dma_fence_wait(f, false); + drm_sched_fence_scheduled(s_fence); dma_fence_set_error(&s_fence->finished, -ESRCH);