On Sat, 10 May 2025, Warner Losh wrote:
OK. Sorry for the top post.
I need to recreate this because this data is already freed and corrupted.
So is this panic in bhyve? What's the bhyve configuration you are using?
You say this happens as you move the xhci pass through device back to
the host. Does the same thing happen if you instead devctl detach the xhciX
the device instead? It looks like you have a da0 device on the usb bus, any
others?
"Seems xhci -> ppt" So this is on the base system moving the XHCI to
ppt to be used in bhyve, otherwise it wouldn't detach all the USB
devices but create them. I booted a non-FreeBSD guest.
The da0 is created by a blank adapter in the
ugen0.7: <Card Reader Realtek Semiconductor Corp.> at usbus0, cfg=0 md=HOST
spd=SUPER (5.0Gbps) pwr=ON (200mA)
<Generic- SD/MMC 1.00> at scbus1 target 0 lun 0 (da0,pass1)
There's no card there. But it's been like this for years; even before
the reader was supported and I've done this regularly.
I need a way to reproduce it, and I kinda get what you're doing, but step
by step instructions would be way better... And it may be a week before
I get to it: my daughter is graduating next Friday, so my whole routine and
schedule is off.
# pciconf -l pci0:0:20:0
xhci0@pci0:0:20:0: class=0x0c0330 rev=0x21 hdr=0x00 vendor=0x8086
device=0x9d2f subvendor=0x17aa subdevice=0x225d
I cannot reproduce it anymore. history is gone sadly. I do not
know what I typed anymore.
My bhyve.sh has these as comments so I likely just pasted them when
bhyve refused to start because of no ppt0 not being there already.
# devctl detach pci0:0:20:0 || true
# devctl set driver pci0:0:20:0 ppt || true
/bz
--
Bjoern A. Zeeb r15:7
