---
id: pr-flashinfer-1826
repo: flashinfer-ai/flashinfer
pr: 1826
title: 'Bugfix: Fix data hazard in persistent reduce'
author: Edenzzzz
date: '2025-10-01'
url: https://github.com/flashinfer-ai/flashinfer/pull/1826
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- persistent-kernel
techniques:
- persistent-kernel
hardware_features: []
kernel_types:
- attention
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: ba2b4aa636c4ecf99981794767ffbf89267720cd
inclusion_reason: kernel file changes
changed_paths:
- include/flashinfer/attention/persistent.cuh
head_ref_oid: ec1d49fc735fb5b25dcb53d3ae80e61fd7f60826
artifact_dir: evidence/pull-bundles/flashinfer/gh-1826
---
# Bugfix: Fix data hazard in persistent reduce

- Repository: `flashinfer-ai/flashinfer`
- PR: [1826](https://github.com/flashinfer-ai/flashinfer/pull/1826)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `include/flashinfer/attention/persistent.cuh`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-1826`
