---
id: pr-vllm-28660
repo: vllm-project/vllm
pr: 28660
title: '[Attention][Bugfix] Fix FA sink support'
author: MatthewBonanni
date: '2025-11-13'
url: https://github.com/vllm-project/vllm/pull/28660
source_category: upstream-code
architectures:
- sm100
tags:
- attention
techniques: []
hardware_features: []
kernel_types:
- attention
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: f9f3b596f374c4a01acef275ee1f35398bb05164
inclusion_reason: kernel file changes
changed_paths:
- vllm/v1/attention/backends/flash_attn.py
head_ref_oid: e23aeb3172082e9528aca3e778d84005c5c52a4a
artifact_dir: evidence/pull-bundles/vllm/gh-28660
---
# [Attention][Bugfix] Fix FA sink support

- Repository: `vllm-project/vllm`
- PR: [28660](https://github.com/vllm-project/vllm/pull/28660)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `vllm/v1/attention/backends/flash_attn.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-28660`
