Hello,
I'm facing the same 'oops' kernel after upgrading my orange Pi 5 Plus from 24.11.2 (6.1.75-vendor-rk35xx) to 24.11.3 ( 6.1.84-vendor-rk35xx) => no more system bootable.
I'm back with SDCard (24.11.1), then chroot emmc to remove zfs (dkms remove zfs/2.2.6), reboot on emmc => No trouble, system actif without ZFS.
Then I try to reinstall zfs (dkms install zfs/2.2.6), at the end of the process (after success installation message), I've got a systemlog alert with 'oops'.... => system no more bootable.
I'm back to SDCard and make update the complete system 24.11.1 to 24.11.3 (ZFS is not installed on SDCard) => no trouble.
So it seems incompatibility between 6.1.84-vendor-rk35xx and ZFS (at least 2.2.6, perhaps I will try 2.2.7 from backports).
For my point of view, I have no choice, ZFS must ran on my SBC.
So, first I give a try with zfs 2.2.7, and if trouble is still present, I will go back to 24.11.2 (6.1.75-vendor-rk35xx).
Regards,
Turbodid