---
id: pr-vllm-17267
repo: vllm-project/vllm
pr: 17267
title: '[BugFix] Fix vllm_flash_attn install issues'
author: LucasWilkinson
date: '2025-04-28'
url: https://github.com/vllm-project/vllm/pull/17267
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- mla
techniques: []
hardware_features: []
kernel_types:
- attention
- mla
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: d8bccde686348b38fc4590dffe8069c68627ab67
inclusion_reason: kernel file changes
changed_paths:
- .github/CODEOWNERS
- .gitignore
- setup.py
- vllm/attention/backends/flash_attn.py
- vllm/attention/backends/mla/common.py
- vllm/attention/utils/fa_utils.py
- vllm/engine/arg_utils.py
- vllm/v1/attention/backends/flash_attn.py
- vllm/v1/attention/backends/mla/common.py
- vllm/vllm_flash_attn/__init__.py
- vllm/vllm_flash_attn/flash_attn_interface.pyi
head_ref_oid: e1396b5a4539d80bf886b220e03d89f145019943
artifact_dir: evidence/pull-bundles/vllm/gh-17267
---
# [BugFix] Fix vllm_flash_attn install issues

- Repository: `vllm-project/vllm`
- PR: [17267](https://github.com/vllm-project/vllm/pull/17267)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `.github/CODEOWNERS`
- `.gitignore`
- `setup.py`
- `vllm/attention/backends/flash_attn.py`
- `vllm/attention/backends/mla/common.py`
- `vllm/attention/utils/fa_utils.py`
- `vllm/engine/arg_utils.py`
- `vllm/v1/attention/backends/flash_attn.py`
- `vllm/v1/attention/backends/mla/common.py`
- `vllm/vllm_flash_attn/__init__.py`
- `vllm/vllm_flash_attn/flash_attn_interface.pyi`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-17267`
