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Date:      Mon, 25 Jan 2021 19:18:17 +0000
From:      bugzilla-noreply@freebsd.org
To:        virtualization@FreeBSD.org
Subject:   [Bug 253004] Win 10 guest fails to restart unless I --destroy
Message-ID:  <bug-253004-27103@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D253004

            Bug ID: 253004
           Summary: Win 10 guest fails to restart unless I --destroy
           Product: Base System
           Version: 13.0-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bhyve
          Assignee: virtualization@FreeBSD.org
          Reporter: bergerkos@yahoo.co.uk

In 13.0-ALPHA2 I still have this problem:
Running Win 10 guest with 2 passthrough devices (USB controller + NIC) I ca=
n't
start guest after shutdown. Get this error:

Assertion failed: (error =3D=3D 0), function modify_bar_registration, file
/usr/src/usr.sbin/bhyve/pci_emul.c, line 501.
                           .twm/programs/./bhyve-hda.sh: line 13: 90467 Abo=
rt
trap              bhyve -S -c sockets=3D1,cores=3D2,threads=3D2 -m 6G -H -w=
 -s
0,hostbridge -s 3,passthru,7/0/1 -s
4,virtio-blk,/bhyve/win-alt.img,sectorsize=3D512/4096 -s
6,hda,rec=3D/dev/dsp,play=3D/dev/dsp -s 8,passthru,12/0/0 -s
29,fbuf,tcp=3D0.0.0.0:5900,w=3D1600,h=3D900,wait -s 30,xhci,tablet -s 31,lp=
c -l
com1,stdio -l bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI.fd windows-=
10

Interestingly, this error particular error was reported and addressed by a
patch, so it doesn't happen again. But it comes out when I restar guest aft=
er
shutdown.

It was mentioned here, including also the patch:
http://freebsd.1045724.x6.nabble.com/Windows-10-guests-fail-to-boot-when-at=
tempting-to-passthrough-network-card-td6330452.html

Solution: the only one that works is to run:
#bhyvectl --vm=3D$my_vm_name --destroy

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