On ARM64 Windows, UnregisterSuspendResumeNotification (user32) forwards
to PowerUnregisterSuspendResumeNotification (powrprof), which treats the
HPOWERNOTIFY handle as a pointer and dereferences it. The user32 API
returns an opaque handle, not a pointer-backed allocation, causing an
access violation at shutdown.
Add crash keys (pm-reg-handle, pm-reg-memstate, pm-unreg-memstate) to
capture
- The handle value
- VirtualQuery memory state at both registration and unregistration
If the handle address is MEM_FREE, it confirms the handle is an opaque
index and powrprof is incorrectly dereferencing it. If MEM_COMMIT, it
would indicate a use-after-free of the underlying allocation.
Refs https://github.com/MicrosoftDocs/sdk-api/blob/docs/sdk-api-src/content/powerbase/nf-powerbase-powerunregistersuspendresumenotification.md
Co-authored-by: trop[bot] <37223003+trop[bot]@users.noreply.github.com>
Co-authored-by: deepak1556 <hop2deep@gmail.com>
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