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[Bug] Inkling on sm_121a (GB10): unclamped q-row in rel-bias score-mod gather causes deterministic illegal address (coredump evidence); + aux-stream KV-write race in fused_qkvr_prep

Status: Open.

#49049 In vllm-project/vllm;

· blockmos opened on Jul 18, 2026

[RFC]: Standalone Rust renderer

RFC

Status: Open.

#49047 In vllm-project/vllm;

· sagearc opened on Jul 18, 2026

[Bug]: Nemotron model CUDA error: an illegal memory access was encountered

bugSomething isn't workingSomething isn't working

Status: Open.

#49041 In vllm-project/vllm;

· lengrongfu opened on Jul 18, 2026

[Bug]: FlashInfer B12x W4A16 runtime repacking retains original and packed MoE weights, causing startup OOM

bugSomething isn't workingSomething isn't working

Status: Open.

#49031 In vllm-project/vllm;

· lantudou opened on Jul 18, 2026

[Perf] ~2x decode throughput regression for structured outputs since #45424: apply_grammar_bitmask staging rewrite (bisected to commit, file, and hunk)

Status: Open.

#49013 In vllm-project/vllm;

· romancomplexio opened on Jul 18, 2026

[Bug]: nvfp4 reshape_and_cache_flash assumes NHD layout — silently mis-swizzles HND caches when num_kv_heads % 4 == 0

Status: Open.

#49012 In vllm-project/vllm;

· 0xdespot opened on Jul 18, 2026

[Feature]: nvfp4 KV cache on SM120 — flashinfer ships the kernels, vLLM isn't wired to them (working prototype, 245K ctx on a 5090)

Status: Open.

#49011 In vllm-project/vllm;

· 0xdespot opened on Jul 18, 2026

[Bug]: XQA decode under FULL cudagraph capture silently corrupts attention output (fp8 and nvfp4 KV)

Status: Open.

#49010 In vllm-project/vllm;

· 0xdespot opened on Jul 18, 2026

[Bug]: Minimax MSA - AttributeError: module 'cutlass.cute.core' has no attribute 'ThrMma'

bugSomething isn't workingSomething isn't working

Status: Open.

#49005 In vllm-project/vllm;

· wzhao18 opened on Jul 18, 2026

[Bug]: DBRX MoE weight loading crashes with KeyError after FusedMoE/MoERunner inversion refactor (#41184) — dbrx.py missed by follow-up fix #45054

bugSomething isn't workingSomething isn't working

Status: Open.

#49004 In vllm-project/vllm;

· wagnerpatriota opened on Jul 18, 2026

[Bug]: Speculative Decoding + Structured Output（tool call）组合下，decode 阶段出现秒级卡顿

bugSomething isn't workingSomething isn't working

Status: Open.

#49002 In vllm-project/vllm;

· cableyang-llm opened on Jul 18, 2026

[Bug]: Mistral v11+ tool parser includes trailing text in function arguments

Status: Open.

#48975 In vllm-project/vllm;

· caihui-lol opened on Jul 17, 2026