---
id: pr-vllm-37054
repo: vllm-project/vllm
pr: 37054
title: '[Bugfix] Fix KV scales inconsistency in fp8 MLA & FlashInfer kv_cache_dtype "auto" leading to gibberish'
author: andylolu2
date: '2026-03-18'
url: https://github.com/vllm-project/vllm/pull/37054
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- fp8
- mla
techniques: []
hardware_features:
- fp8
kernel_types:
- attention
- mla
languages:
- triton
captured_at: '2026-04-17'
status: merged
merge_sha: 577df69b26491aaa8f3fef2ea44d6ac256172032
inclusion_reason: kernel file changes
changed_paths:
- tests/v1/attention/test_mla_backends.py
- tests/v1/attention/test_sparse_mla_backends.py
- tests/v1/attention/test_trtllm_attention_integration.py
- vllm/v1/attention/backends/flashinfer.py
- vllm/v1/attention/backends/mla/cutlass_mla.py
- vllm/v1/attention/backends/mla/flashinfer_mla.py
- vllm/v1/attention/backends/mla/flashinfer_mla_sparse.py
- vllm/v1/attention/backends/mla/triton_mla.py
artifact_dir: evidence/pull-bundles/vllm/gh-37054
head_ref_oid: 3e0c087fa14d292a060ea43f42a4b1c580cb01bf
---
# [Bugfix] Fix KV scales inconsistency in fp8 MLA & FlashInfer kv_cache_dtype "auto" leading to gibberish

- Repository: `vllm-project/vllm`
- PR: [37054](https://github.com/vllm-project/vllm/pull/37054)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `tests/v1/attention/test_mla_backends.py`
- `tests/v1/attention/test_sparse_mla_backends.py`
- `tests/v1/attention/test_trtllm_attention_integration.py`
- `vllm/v1/attention/backends/flashinfer.py`
- `vllm/v1/attention/backends/mla/cutlass_mla.py`
- `vllm/v1/attention/backends/mla/flashinfer_mla.py`
- `vllm/v1/attention/backends/mla/flashinfer_mla_sparse.py`
- `vllm/v1/attention/backends/mla/triton_mla.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-37054`
