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136355
2024 Feb 22
1
[PATCH] drm/nouveau: use dedicated wq for fence uevents work
Using the kernel global workqueue to signal fences can lead to
unexpected deadlocks. Some other work (e.g. from a different driver)
could directly or indirectly depend on this fence to be signaled.
However, if the WQ_MAX_ACTIVE limit is reached by waiters, this can
prevent the work signaling the fence from running.
While this seems fairly unlikely, it's potentially exploitable.
Fixes: