On Wed, 2025-02-26 at 17:05 +0800, Qianyi Liu wrote:
From: qianyi liu liuqianyi125@gmail.com
The last_scheduled fence leaked when an entity was being killed and adding its callback failed.
Decrement the reference count of prev when dma_fence_add_callback() fails, ensuring proper balance.
Cc: stable@vger.kernel.org Fixes: 2fdb8a8f07c2 ("drm/scheduler: rework entity flush, kill and fini") Signed-off-by: qianyi liu liuqianyi125@gmail.com
@Matt: since you in principle agreed with this patch, could you give it an official RB?
I could then take it [but will probably rephrase some nits in the commit message]
P.
v2 -> v3: Rework commit message (Markus) v1 -> v2: Added 'Fixes:' tag and clarified commit message (Philipp and Matthew)
drivers/gpu/drm/scheduler/sched_entity.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/scheduler/sched_entity.c b/drivers/gpu/drm/scheduler/sched_entity.c index 69bcf0e99d57..1c0c14bcf726 100644 --- a/drivers/gpu/drm/scheduler/sched_entity.c +++ b/drivers/gpu/drm/scheduler/sched_entity.c @@ -259,9 +259,12 @@ static void drm_sched_entity_kill(struct drm_sched_entity *entity) struct drm_sched_fence *s_fence = job->s_fence; dma_fence_get(&s_fence->finished);
if (!prev || dma_fence_add_callback(prev, &job-finish_cb,
drm_sched_entity_kill_jobs_cb))
if (!prev ||dma_fence_add_callback(prev, &job->finish_cb,drm_sched_entity_kill_jobs_cb)) {
dma_fence_put(prev);drm_sched_entity_kill_jobs_cb(NULL, &job-
finish_cb);
}prev = &s_fence->finished; }