Date: Sun, 21 Sep 2025 17:20:30 -0700 From: Bakul Shah <bakul@iitbombay.org> To: Virtualisation on FreeBSD <freebsd-virtualization@freebsd.org> Subject: Assertion failed: (error == 0), function modify_bar_registration, file /usr/src/usr.sbin/bhyve/pci_emul.c, line 706. Message-ID: <B83D6E25-77BE-4CE0-9DBE-B32D75F9CB20@iitbombay.org>
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On a 15.0-ALPHA3 host, bhyve fails when I try to start a 9front VM.
Error:
Assertion failed: (error == 0), function modify_bar_registration, file /usr/src/usr.sbin/bhyve/pci_emul.c, line 706.
fbuf frame buffer base: 0x38bfae800000 [sz 33554432]
I don't see any recent changes in bhyve/pci_emul.c recently.
>>>This used to work fine when the same machine ran stable/14....<<<
I can boot bsd and linux vms that I tried fine but not 9front.
This is what I run:
bhyve -c 1 \
-s 0,hostbridge \
-s 5,virtio-blk,9front.img \
-s 10,virtio-net,tap1,mac=XXXXXXXXXXXX \
-s 11,fbuf,tcp=0.0.0.0:5900,w=1920,h=1080,wait \
-s 20,xhci,tablet \
-s 31,lpc \
-l bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI.fd \
-m 4G -H -w \
9front
Any hints on how to debug this?
Thanks,
Bakul
PS: stable/15 kernels also seem to be a bit unstable. Once in a
while the machine just freezes. Happened twice in 4 days. Haven't
looked into this yet.
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