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System.Net.Quic.Tests.QuicStreamTests.WriteCanceled_NextWriteThrows test failure #76831
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Tagging subscribers to this area: @dotnet/ncl Issue Details
Failed in #76768. Full log: https://helixre107v0xdeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-76768-merge-80851214628f4109bd/System.Net.Quic.Functional.Tests/1/console.21da1d39.log?helixlogtype=result {
"ErrorMessage": "System.Net.Quic.Tests.QuicStreamTests.WriteCanceled_NextWriteThrows",
"BuildRetry": false
}
|
The test is flaky and the failure happens on regular runs as well (but usually succeeds on reruns) The case seems to be when the cancellation happens to occur before the call to WriteAsync (and we call it with pre-cancelled token). runtime/src/libraries/System.Net.Quic/tests/FunctionalTests/QuicStreamTests.cs Lines 591 to 606 in 844702d
We should have a look someday. |
Okay, my original thought was wrong, we handle precancelled tokens correctly, there is actually very slim chance to repro this because many things have to align properly. the issue can be artificially enforced reproduced by adding sleep in
What happens is that cancellation token sets Write state to cancelled and unblocks the Test task to progress, and it completes the In other words, if cancellation token fires while send is in progress, we may end up gracefully closing the write side :/ |
fixed by #90253 |
Failed in #76768. Full log: https://helixre107v0xdeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-76768-merge-80851214628f4109bd/System.Net.Quic.Functional.Tests/1/console.21da1d39.log?helixlogtype=result
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