[release/8.0-staging] Back port logical equivalent of #102838 #113230
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PR Overview
This PR backports a logical fix from .NET 9 to .NET 8 to ensure that store refreshes occur only when needed by reassigning local state after acquiring the lock.
- In OpenSslCachedSystemStoreProvider.cs, the locals ret and elapsed are assigned immediately after acquiring the lock.
- In OpenSslCachedDirectoryStoreProvider.cs, similar assignments ensure that the native collection and elapsed time reflect the most up-to-date information.
Reviewed Changes
| File | Description |
|---|---|
| OpenSslCachedSystemStoreProvider.cs | Assigning s_nativeCollections and s_recheckStopwatch.Elapsed to local variables to avoid stale data during refresh logic. |
| OpenSslCachedDirectoryStoreProvider.cs | Updates are applied to ensure that the store's native collection state and elapsed time are captured inside the lock. |
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Tagging subscribers to this area: @dotnet/area-system-security, @bartonjs, @vcsjones |
bartonjs
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Mar 6, 2025
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/ba-g Failures were infrastructure, and not even on configurations that run this code. |
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This is a logical back port of #102838. The store providers went through a significant refactoring in .NET 9, so the changes would not back port cleanly to .NET 8.
/cc @bartonjs
Customer Impact
Reported by a customer in #113227 asking to apply the same fix in #102838. When the OpenSSL system and directory stores needed to be refreshed, a lock is taken. However, when the thread acquired the lock, the information about needing to refresh the store is stored in a local. This would lead to all threads that wait on the lock performing a store refresh because the locals were not updated after the lock was acquired.
The fix is to re-assign the locals with up-to-date information after the lock is taken.
Regression
No.
Testing
Existing tests ensure no functional changes are introduced.
Risk
Low. A similar fix was made for .NET 9. The change is isolated and simple to reason about.