gBS->ExitBootServices signals events more than once (Bugzilla Bug 4876)

[tianocore-issues]

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Bugzilla Bug 4876

Date: 2024-12-04T17:06:41+00:00
From: Felix <>
To: unassigned <>
CC:

Last updated: 2024-12-04T17:06:41+00:00

[tianocore-issues]

Comment 23548

Date: 2024-12-04 17:06:41 +0000
From: Felix <>

• Industry Specification: ---
• Release Observed: EDK II Master
• Releases to Fix: EDK II Master
• Target OS: ---
• Bugzilla Assignee(s): unassigned <>

According to UEFI specification before-exist-boot-services are exit-boot-services even notifications callbacks must be signaled only once, even if ExitBootServices() is called multiple times.

Current implementation signals the events on every ExitBootServices() call and as such is not in compliance with the UEFI specification requirements.

Refer to https://uefi.org/specs/UEFI/2.10/07_Services_Boot_Services.html#efi-boot-services-exitbootservices

"The events are only signaled once even if ExitBootServices() is called multiple times."