[Bug 291063] bhyve: Failed to emulate instruction sequence 8908f0091c244883c2044883c00441

From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 17 Nov 2025 16:36:43 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=291063

            Bug ID: 291063
           Summary: bhyve: Failed to emulate instruction sequence
                    8908f0091c244883c2044883c00441
           Product: Base System
           Version: 14.3-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bhyve
          Assignee: virtualization@FreeBSD.org
          Reporter: cpetrik@proton.me

When trying to run a Windows 11 VM for school I am unable to pass the last step
of the install the VM dies with:

bhyve: tpm_crb_mem_handler: cancelling a TPM command is not implemented yet
bhyve: tpm_crb_mem_handler: invalid write @         fed40464 [size = 4]
Failed to emulate instruction sequence [ 8908f0091c244883c2044883c00441 ] at
0xfffff8004e6018b2

tpm.ko is loaded and detect the chip as:
dev.tpmcrb.0.%driver: tpmcrb
dev.tpmcrb.0.%desc: Trusted Platform Module 2.0, CRB mode

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