Re: debug crash

OK, here is another part of the crash message:vm exit[0]
reason        VMX
ip        0x00000000015eaa03
                                                                              inst_length    2
status        0
exit_reason    2 (Triple fault)
                                                                            qualification    0x0000000000000000
inst_type        0
inst_error  0Additional information: this ONLY happens to Windows-10 based VMs -- whether existing one or just a Win-10 Pro installation ISO booted for initial setup.Tried to boot Ubuntu on the same machine -- all boots fine.

With kindest regards,
Kostya Berger
 
 

    On Monday, 16 August 2021, 09:58:54 GMT+3, Kostya Berger via freebsd-virtualization <freebsd-virtualization@freebsd.org> wrote:  
 
 Forgot to mention, I'm using 2 passthrough PCI-e cards. But the problem is, it crashes even without passthrough enabled.

With kindest regards,
Kostya Berger
 
 

    On Monday, 16 August 2021, 09:16:58 GMT+3, Kostya Berger <bergerkos@yahoo.co.uk> wrote:  
 
 Hello, dear friends :)
I"m on 13.0-p3. Suddenly, after some hardware reconfiguration (PCI-e cards exchanged slots) my bhyve stopped working.In particular, in my Win 10 VM, it goes as far as offer to type in BitLocker password, after which starts booting and immediately crashes. However, I tried to start afresh without ANY disks attached, except Win 10 installation ISO. Gets as far as 'type a key to boot from CD', then crashes on an attempt to boot.
This is the message that I see on the screen:./bhyve-1: line 11:  2954 Abort trap              bhyve -S -c sockets=1,cores=4,threads=2 -m 8G -H -w -s 0,hostbridge -s 4,virtio-blk,win-alt.img,sectorsize=512/4096 -s 5,ahci-cd,Win10_21H1_English_x64.iso -s 29,fbuf,tcp=0.0.0.0:5900,w=1600,h=900,wait -s 30,xhci,tablet -s 31,lpc -l com1,stdio -l bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI.fd windows-10
For the purity of experiment, I tried it with a fresh installation on the same machine -- same thing. So I assume it is hardware related. As such, I recall in the past there was a patch 

NOTE: in the past, pre-13.0, I had similar crash related to a PCI-e card with multiple bars, as described here:https://forums.freebsd.org/threads/bhyve-pci-passthru-windows-10-problem.74265/
However, the patch cured that, and it has long been incorporated into the bhyve code... But the card is still in my machine, it's a 4-port Intel NIC. I haven't yet tried removing this or that card from my system... didn't have the time yet. But I'd like to keep having it, of course...

My question is, how can I debug this crash? In dmesg it only says:pid 2954 (bhyve), jid 0, uid 0: exited on signal 6 
With kindest regards,
Kostya Berger