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- [x] I have read and followed the [Contribution Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/CONTRIBUTING.md#code-contributions). - [x] I have read and followed the [AI Policy](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/AI.md). - [x] I have read and followed the [Coding Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/Coding.md) to the best of my ability. ------------------- Another crash observed in Ender Magnolia: A deadlock caused between CPUCore_0/GPU/GPUFencingThread. CPUCore_0 waits for GPU work inside the NCE fault handler GPU waits for the syncpoint mutex GPUFencingThread holds that mutex while waiting for CPUCore_0 NCE interrupt lock The fix makes duplicate interrupts return before acquiring the lock, while the first request keeps its original behavior. Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4530 Reviewed-by: CamilleLaVey <camillelavey99@gmail.com> Reviewed-by: Shinmegumi <shinmegumi@eden-emu.dev>