[cDAC] Add GC stress verification infrastructure and stack walk fixes#126176

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max-charlamb wants to merge 65 commits intodotnet:mainfrom

max-charlamb:cdac-stackreferences-4

Commits on Mar 12, 2026

cdac: Stack walk GC scanning, exception handling, and IsFilterFunclet support

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cdac: Implement EnumerateLiveSlots in managed GCInfoDecoder

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cdac: Fix build errors in stack walk and execution manager

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cdac: Complete GcScanner.EnumGcRefs with live slot enumeration

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cdac: Implement GetStackReferences end-to-end

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cdac: Add dump tests for GetStackReferences

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cdac: Restore datadescriptor entries with proper native support

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update
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add tests
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update test script
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clean up
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add debug verification
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cdac: Add Frame GcScanRoots dispatch for non-frameless frames

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cdac: Fix stack slot register in GcScanner, add set-based debug validation

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cdac: Fix GCInfo slot table decoding bugs

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cdac: Fix ARM64 stack base register and ExecutionAborted exit path

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cdac: Match native skip behavior and add FindSafePoint TODO

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cdac: Implement scratch register/slot filtering in GCInfo decoder

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Implement context register fetching by number
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cdac: Address PR review comments

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GCReportCallback missing object dereference
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Fix cDAC stack walking bugs found via GC stress verification

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Fix Frame skip to use caller SP instead of initial SP

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Guard new Data fields with ContainsKey for backward compatibility

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Address PR review comments: cleanup and safety fixes

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Address remaining PR review comments

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Restore GetMethodDescPtr docs and fix patchpointinfo friend

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Remove unused m_lastReportedFunclet from ExInfo

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remove guards that were not required
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remove stale comment
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Commits on Mar 13, 2026

Fix GCReportCallback to throw on read failure and document funclet gaps

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Add cDAC GC stress verification tool (GCSTRESS_CDAC=0x20)

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Triple-match cDAC vs DAC vs runtime GC ref comparison

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Remove DAC from stress tool, add cDAC ref filtering

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Commits on Mar 16, 2026

Add known issues doc and filter dynamic methods in GC stress

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Move gcstress docs to cDAC tests directory and add README section

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Fix review issues: thread safety, buffer overflow, revert stale changes

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nit cleanup
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Merge remote-tracking branch 'origin/main' into cdac-stackreferences-2-with-stress
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Commits on Mar 17, 2026

updates
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include cdacdata.h
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update to use the existing exception clause info
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comments
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Commits on Mar 18, 2026

comments
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Merge remote-tracking branch 'origin/main' into cdac-stackreferences-2-with-stress
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Fix infinite loop in repo root discovery on Windows filesystem root

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Remove RegisterNumber from RegisterAttribute and context structs

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Fix mock descriptors for new ExceptionInfo, RealCodeHeader, and ReadyToRunInfo fields

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Commits on Mar 19, 2026

Fix cross-platform build errors: cdac_data<ExInfo> and _wfopen

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Fix stack slot register encoding to match native GetStackReg

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Improve GC stress comparison to validate Address and log Register/Offset

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Fail initialization if ISOSDacInterface QI fails

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Make IGCInfoDecoder.EnumerateLiveSlots abstract instead of default-throwing

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Only set ContinueOnAssert when not in FailFast mode

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Merge remote-tracking branch 'origin/main' into pr-125505
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Commits on Mar 24, 2026

Move skipBelowSP into CreateStackWalkCore helper

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Simplify StackWalk_1.cs flags and logic
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Fix GC stress register ref comparison with two-phase matching

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Commits on Mar 25, 2026

Add extra Release for leaked enumerator ref-count in GC stress

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Implement PromoteCallerStack for cDAC stub frame scanning

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Fix EH clause handling and add cDAC GC stress verification

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Remove dead code from StackWalk_1 and CorSigParser

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Add DOTNET_CdacStress config and rename CdacGcStress to CdacStress

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Commits on Mar 26, 2026

Read FilterContext for stack walk starting context

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Add three-way cDAC/DAC/RT comparison and fix stack walk bugs

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