kernel panic because of firmware on 25.03

DarkFnh

It seems that a firmware issue with 25.03 can cause kernel panics.

I had this issue with both beta releases.

Gertjan

@DarkFnh

Device driver issue ?
What happens when you remove the wireless device iwm0 device ?

DarkFnh

@Gertjan I havent tested removing the device as its integrated into the motherboard.

I simply rolled back to the previous snapshot each time and the firewall is working fine on 24.11

patient0

@DarkFnh then you may disable the device using a device hint.

You can do that be either interrupt at the boot menu (console) or while still on 24.11, add it to the file /boot/loader.conf.local

To verify your wifi, run from the CLI (SSH or on the console) sysctl dev | fgrep iwm and it will probably output something like

dev.iwm.0.debug: 0
dev.iwm.0.%parent: pci1
dev.iwm.0.%pnpinfo: vendor=0x8086 device=0x24f3 subvendor=0x8086 subdevice=0x10b0 class=0x028000
dev.iwm.0.%location: slot=0 function=0 dbsf=pci0:1:0:0 handle=\_SB_.PCI0.RP03.PXSX
dev.iwm.0.%driver: iwm
...

Create the device hint to disable the Wifi:
echo 'hint.iwm.0.disabled="1"' >> /boot/loader.conf.local
... and reboot after that.

Or enter the same device hint at the boot prompt:
set hint.iwm.0.disabled="1"

patient0

This post is deleted!

DarkFnh

@patient0 Yup I disabled the device and 25.03 completed the bootup.

I guess this is a bug with 25.03 that needs to be fixed.

kprovost

@DarkFnh Can you post the output of 'bt' and 'show registers' at the 'db>' prompt?