ZFS system can no longer boot - zfs_alloc()/zfs_free() mismatch

Joseph Mingrone jrm at freebsd.org
Thu May 7 23:59:31 UTC 2020

Hello everyone,

As it says in the subject line, my system stopped booting for some
unknown reason.  It might have been after upgrading from 12.1-p2 to
-p4, but I'm unsure.  It sounds similar to this issue:

Allan and I tried debugging for a few hours today, but without
success.  We tried replacing the boot code and the loaders, but the
result was the same.  We also tried booting from a usb thumb drive,
then `set currdev=zfs:zroot/ROOT/default:` and `boot`, but the same
error is shown.

Steve and Kyle, did you ever solve this problem?



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