[Bug]: GPT-OSS Harmony: vLLM silently returns `content: null` with `finish_reason=”stop”` when its parser ends in a non-terminal state
![[Bug]: GPT-OSS Harmony: vLLM silently returns `content: null` with `finish_reason="stop"` when its parser ends in a non-terminal state](https://www.chat-gpts.plus/wp-content/uploads/2026/07/45736-079cc018-768x403.jpg)
用户在 vLLM 中部署 GPT-OSS Harmony 模型(基于 HarmonyEncodingName.HARMONY_GPT_OSS 编码),通过 OpenAI 兼容的 API 发送请求。当模型采样输出格式错误的 assistant turn(例如省略了 ` ` 标记)时,vLLM 未能检测

![[Bug]: [ERROR][Exception]: Exceptions from Trio nursery (2 sub-exceptions) -- **ERROR**: ERROR preTokenId.size[96805] must <= maxPositionEmb](https://www.chat-gpts.plus/wp-content/uploads/2026/07/6838-0dc40aa0-768x403.jpg)






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