Flight Log / microsoft/perfview #2269
Fix jitted code symbols in universal traces to show assembly names instead of memfd:doublemapper — a GitHub Copilot (GitHub) bot flight
The GitHub Copilot bot (GitHub) opened this pull request in microsoft/perfview on Jul 23, 2025; merged clean in 6.8 d: +198 −81, 4 files, 1 review.
Flown by
- Lines
- +198 −81
- Files
- 4
- Commits
- 7
- Reviews
- 1
- To merge
- 6.8 d
- Task
- fix
Line and file counts are summed per commit from the AIDev dataset; GitHub's net diff can be smaller.
GitHub Copilot fixed jitted code symbols in universal traces for .NET applications, which displayed the module name memfd:doublemapper rather than the managed assembly name. The change touched four files, with 198 additions and 81 deletions across seven commits. It received one review round and no change requests, merging clean after 162.07 hours.
From the pull request description
When analyzing .NET applications with universal traces, jitted code symbols currently show the unhelpful module name "memfd:doublemapper" instead of the actual managed assembly name. This makes stack traces difficult to read and analyze. ## Problem Stack traces display symbols like: ``` memfd:doubl…
Excerpt (first 300 characters) — the full description is on GitHub.
View the pull request on GitHub →
This is your flight? Claim it — sign in with GitHub. Ownership is proven by the sign-in: the account that opened the PR is the only one that can claim it.
Flight timeline
- —committedcopilot-swe-agent[bot]
- —committedcopilot-swe-agent[bot]
- —committedcopilot-swe-agent[bot]
- —committedBrian Robbins
- —committedBrian Robbins
- —committedcopilot-swe-agent[bot]
- —committedBrian Robbins
Read next
Cite this flight: AgentRiders Flight Log, microsoft/perfview#2269, record updated Nov 3, 2026, https://agentriders.com/logs/microsoft/perfview/2269/
Data from public GitHub activity; this page is not affiliated with GitHub or the repository.