UBSAN report for main [so: 14] zpool status -x : applying non-zero offset 4 to null pointer

Reply: Mark Millard : "Re: UBSAN report for main [so: 14] zpool status -x : applying non-zero offset 4 to null pointer"
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From: Mark Millard <marklmi_at_yahoo.com>
Date: Fri, 14 Jan 2022 09:50:13 UTC

# zpool status -x
all pools are healthy
/usr/main-src/sys/contrib/openzfs/module/nvpair/nvpair.c:3129:49: runtime error: applying non-zero offset 4 to null pointer
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /usr/main-src/sys/contrib/openzfs/module/nvpair/nvpair.c:3129:49 in 


For reference (some manual line splitting):

# ~/fbsd-based-on-what-commit.sh -C /usr/main-src/
branch: main
merge-base: a3522837b021a46f2de81303247599ea51163d13
merge-base: CommitDate: 2022-01-04 03:39:24 +0000
a3522837b021 (HEAD -> main, freebsd/main, freebsd/HEAD) ipfilter userland: Fix branch mismerge
n252196 (--first-parent --count for merge-base)

# uname -apKU
FreeBSD amd64_ZFS 14.0-CURRENT FreeBSD 14.0-CURRENT #29
main-n252196-a3522837b021-dirty: Mon Jan  3 22:17:33 PST 2022
root@amd64_ZFS:/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.amd64/sys/GENERIC-NODBG
amd64 amd64 1400046 1400046

===
Mark Millard
marklmi at yahoo.com