---
id: pr-vllm-29933
repo: vllm-project/vllm
pr: 29933
title: '[BugFix] Fix DBO assert `assert B_block_table == B_q`'
author: LucasWilkinson
date: '2025-12-04'
url: https://github.com/vllm-project/vllm/pull/29933
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- decode
techniques: []
hardware_features: []
kernel_types:
- attention
- decode
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: c8ab988b15af5e30e87c6eb27a0ededf0377ac9e
inclusion_reason: kernel file changes
changed_paths:
- tests/v1/attention/test_attention_splitting.py
- vllm/v1/spec_decode/eagle.py
- vllm/v1/worker/dp_utils.py
- vllm/v1/worker/gpu_model_runner.py
- vllm/v1/worker/ubatch_utils.py
head_ref_oid: aa4de2b57d7130e11efacb1b3b76939d2d7c85ac
artifact_dir: evidence/pull-bundles/vllm/gh-29933
---
# [BugFix] Fix DBO assert `assert B_block_table == B_q`

- Repository: `vllm-project/vllm`
- PR: [29933](https://github.com/vllm-project/vllm/pull/29933)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `tests/v1/attention/test_attention_splitting.py`
- `vllm/v1/spec_decode/eagle.py`
- `vllm/v1/worker/dp_utils.py`
- `vllm/v1/worker/gpu_model_runner.py`
- `vllm/v1/worker/ubatch_utils.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-29933`
