[https://nvbugs/6468821][chore] Unwaive GPT-OSS B300 attention backend test

[yuxianq]

Summary by CodeRabbit

• Tests
  • Removed an obsolete test waiver for an attention backend integration test.

Description

Remove the B300 waiver for the GPT-OSS GQA BF16 context attention-backend test tracked by NVBug 6468821. The exact test selector passed 100 consecutive standalone runs on B300 without reproducing the reported failure.

Test Coverage

• tests/unittest/_torch/attention/test_attention_backends.py::test_attention_backend[gpt_oss_gqa_hd64_gptj_swa128-ctx-bf16-HND-p32-v1] on B300: 100/100 passed.
• tests/unittest/_torch/attention/ on B300: two complete repetitions passed (3,600 passed and 536 skipped per repetition).
• Waiver parser: all 455 remaining entries parsed successfully.
• Pre-commit waiver duplicate and AST test-list validation hooks passed.

PR Checklist

Please review the following before submitting your PR:

• PR description clearly explains what and why. If using CodeRabbit's summary, please make sure it makes sense.

• PR Follows TRT-LLM CODING GUIDELINES to the best of your knowledge.

• Test cases are provided for new code paths (see test instructions)

• If PR introduces API changes, an appropriate PR label is added - either api-compatible or api-breaking. For api-breaking, include BREAKING in the PR title.

• Any new dependencies have been scanned for license and vulnerabilities

• CODEOWNERS updated if ownership changes

• Documentation updated as needed

• Update tava architecture diagram if there is a significant design change in PR.

• The reviewers assigned automatically/manually are appropriate for the PR.

• Please check this after reviewing the above items as appropriate for this PR.

GitHub Bot Help

To see a list of available CI bot commands, please comment /bot help.

[yuxianq]

/bot run --disable-fail-fast

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

Run ID: fddfcf0c-de71-4a24-a382-39d3fb11d50a

📥 Commits

Reviewing files that changed from the base of the PR and between b8604c4 and a33e706.

📒 Files selected for processing (1)

• tests/integration/test_lists/waives.txt

💤 Files with no reviewable changes (1)

• tests/integration/test_lists/waives.txt

---

📝 Walkthrough

Walkthrough

The integration waiver list removes one B300 waiver for an attention backend test. All subsequent waiver entries remain unchanged.

Changes

Waiver cleanup

Layer / File(s)	Summary
Remove attention backend waiver tests/integration/test_lists/waives.txt	Deletes the SKIP waiver entry for the targeted attention backend test.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• NVIDIA/TensorRT-LLM#16534: Removes another B300 waiver from the same waiver list.
• NVIDIA/TensorRT-LLM#16587: Adjusts waivers for the same attention backend test.
• NVIDIA/TensorRT-LLM#16604: Changes SKIP and waiver entries in the same file.

Suggested reviewers: bowenfu

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title matches the PR’s main change and uses the required ticket/type format.
Description check	✅ Passed	The description includes the required Description, Test Coverage, and PR Checklist sections and is specific enough.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

_{Comment @coderabbitai help to get the list of available commands.}

[tensorrt-cicd]

PR_Github #60344 [ run ] triggered by Bot. Commit: a33e706 Link to invocation

[tensorrt-cicd]

PR_Github #60344 [ run ] completed with state FAILURE. Commit: a33e706
/LLM/main/L0_MergeRequest_PR pipeline #48686 completed with status: 'FAILURE'

CI Report

⚠️ Action Required:

• Please check the failed tests and fix your PR
• If you cannot view the failures, ask the CI triggerer to share details
• Once fixed, request an NVIDIA team member to trigger CI again

CI Agent Failure Analysis

Link to invocation

[BowenFu]

LGTM — waiver removal (unwaive GPT-OSS on B300) after the underlying bug (6468821) was resolved; test-list only, no product code.

[yuxianq]

/bot run --disable-fail-fast

[tensorrt-cicd]

PR_Github #60377 [ run ] triggered by Bot. Commit: a33e706 Link to invocation

[tensorrt-cicd]

PR_Github #60377 [ run ] completed with state SUCCESS. Commit: a33e706
/LLM/main/L0_MergeRequest_PR pipeline #48716 completed with status: 'SUCCESS'

CI Report

Link to invocation