---
id: pr-vllm-21525
repo: vllm-project/vllm
pr: 21525
title: '[Bugfix] Fix workspace buffer None issue for Flashinfer TRTLLM Backend'
author: elvischenv
date: '2025-07-29'
url: https://github.com/vllm-project/vllm/pull/21525
source_category: upstream-code
architectures:
- sm100
tags: []
techniques: []
hardware_features: []
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 58b11b24a69f0d5fc48f3a6ce8291e8d92af26e2
inclusion_reason: defer
changed_paths:
- benchmarks/kernels/benchmark_trtllm_attention.py
- tests/kernels/attention/test_flashinfer_trtllm_decode_attention.py
- vllm/attention/backends/flashinfer.py
- vllm/v1/attention/backends/flashinfer.py
artifact_dir: evidence/pull-bundles/vllm/gh-21525
head_ref_oid: bc30deb87cc99b2a865300904ef5cd2262a23823
---
# [Bugfix] Fix workspace buffer None issue for Flashinfer TRTLLM Backend

- Repository: `vllm-project/vllm`
- PR: [21525](https://github.com/vllm-project/vllm/pull/21525)
- Decision: `defer`
- Reason: defer

## Changed Paths

- `benchmarks/kernels/benchmark_trtllm_attention.py`
- `tests/kernels/attention/test_flashinfer_trtllm_decode_attention.py`
- `vllm/attention/backends/flashinfer.py`
- `vllm/v1/attention/backends/flashinfer.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-21525`
