qianyi liu c76bd3c992 drm/sched: Fix fence reference count leak
commit a952f1ab696873be124e31ce5ef964d36bce817f upstream.

The last_scheduled fence leaks when an entity is being killed and adding
the cleanup callback fails.

Decrement the reference count of prev when dma_fence_add_callback()
fails, ensuring proper balance.

Cc: stable@vger.kernel.org	# v6.2+
[phasta: add git tag info for stable kernel]
Fixes: 2fdb8a8f07 ("drm/scheduler: rework entity flush, kill and fini")
Signed-off-by: qianyi liu <liuqianyi125@gmail.com>
Signed-off-by: Philipp Stanner <phasta@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250311060251.4041101-1-liuqianyi125@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-03-28 21:59:55 +01:00
2025-03-28 21:59:55 +01:00
2025-03-28 21:59:55 +01:00
2022-09-28 09:02:20 +02:00
2025-03-22 12:50:50 -07:00

Linux kernel
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