assertion errors on umount in zfs: avl_find() succeeded inside avl_add()

[Eitan Adler]

After poudriere finishes I see the following (at the end):

Notes:
FreeBSD develop 12.0-CURRENT FreeBSD 12.0-CURRENT #0 r329949: Sat Feb
24 07:58:23 UTC 2018
eax at fasteagle:/srv/obj/fbsd/head/srv/src/fbsd/head/amd64.amd64/sys/GENERIC
 amd64

I am in a jail, so this is poudriere running in a jail. Not sure what
debug info is useful but please do let me know and I'll send it.

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[00:10:40] [01] [00:01:16] Finished editors/vim | vim-8.0.1594: Success
[00:10:40] Stopping 28 builders
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Abort trap (core dumped)
Abort trap (core dumped)
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Abort trap (core dumped)
Abort trap (core dumped)
Abort trap (core dumped)
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Assertion failed: (avl_find() succeeded inside avl_add()), file
/usr/src/cddl/lib/libuutil/../../../sys/cddl/contrib/opensolaris/common/avl/avl.c,
line 649.
Abort trap (core dumped)


-- 
Eitan Adler