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Fix ETW session GUID collision#292

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beaubelgrave merged 1 commit into
microsoft:mainfrom
utpilla:utpilla/Fix-ETW-concurrent-sessions
Jun 16, 2026
Merged

Fix ETW session GUID collision#292
beaubelgrave merged 1 commit into
microsoft:mainfrom
utpilla:utpilla/Fix-ETW-concurrent-sessions

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@utpilla utpilla commented Jun 16, 2026

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Fixes #289

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Derive the session GUID deterministically from the session name, using the same SHA-1 / RFC 4122 v5 scheme the crate already uses to map EventSource provider names to provider GUIDs

@beaubelgrave beaubelgrave merged commit 2d1bf90 into microsoft:main Jun 16, 2026
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ETW: Hardcoded session GUID in WNODE_HEADER::default() blocks concurrent sessions and persists across crashed processes

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