---
id: pr-vllm-28990
repo: vllm-project/vllm
pr: 28990
title: '[BugFix] Fix async-scheduling + FlashAttn MLA'
author: LucasWilkinson
date: '2025-11-19'
url: https://github.com/vllm-project/vllm/pull/28990
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: 48fc8b1e595766af9c91edfc1de43f3a352575eb
inclusion_reason: kernel file changes
changed_paths:
- vllm/v1/attention/backends/mla/common.py
- vllm/v1/attention/backends/mla/flashattn_mla.py
- vllm/v1/attention/backends/utils.py
- vllm/v1/worker/gpu_model_runner.py
head_ref_oid: 4d6fa11760ab2d3641527b9f4d6217efcc05d65a
artifact_dir: evidence/pull-bundles/vllm/gh-28990
---
# [BugFix] Fix async-scheduling + FlashAttn MLA

- Repository: `vllm-project/vllm`
- PR: [28990](https://github.com/vllm-project/vllm/pull/28990)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `vllm/v1/attention/backends/mla/common.py`
- `vllm/v1/attention/backends/mla/flashattn_mla.py`
- `vllm/v1/attention/backends/utils.py`
- `vllm/v1/worker/gpu_model_runner.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-28990`
