ZFS: zfs_alloc()/zfs_free mismatch

[teisho]

Hi,
I've tried to upgrade my FreeBSD 12.2-RELEASE to 13.0-RELEASE and after the last reboot the System isn't booting anymore.
Any Ideas how to fix that?

 

[covacat]

boot from external media and update bootcode

 

[teisho]

I fixed it by rewriting bootcode to the disk with a rescue system.