[release/10.0] Assert Interop.Sys.LSeek(this, 0, Interop.Sys.SeekWhence.SEEK_CUR) >= 0 in System.Net.XXX tests

[ericstj]

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1211439
Build error leg or test failing: System.Net.Http.Tests.HttpWindowsProxyTest.HttpProxy_Local_Bypassed
Pull request: #121366

Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": "Interop.Sys.LSeek(this, 0, Interop.Sys.SeekWhence.SEEK_CUR) >= 0",
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Most likely the same as #120577 but the fix might be missing from the release/10.0 branch. @rzikm

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1211439
Error message validated: [Interop.Sys.LSeek(this, 0, Interop.Sys.SeekWhence.SEEK_CUR) >= 0]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 11/24/2025 11:07:10 PM UTC

Report

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	0	0

[dotnet-policy-service]

Tagging subscribers to this area: @dotnet/ncl
See info in area-owners.md if you want to be subscribed.

[jeffschwMSFT]

removing blocking-clean-ci has it has not failed in 30 days

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	0	0

[danmoseley]

Note

This comment was AI/Copilot-generated.

Known Issue Failure History

Analysis generated by known-issue-history

Metric	Value
Total failure events	20
Failure periods	1
Period	Nov 25, 2025 – Jan 3, 2026
Peak 24h hit count	7
Peak 1-month hit count	27
Last failure	Dec 4, 2025
Days since last failure	107
Cleared	Jan 3, 2026 (all counts returned to 0)

[rzikm]

Resolved