[Bug 236220] ZFS vnode deadlock on zfs_mknode

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236220

--- Comment #7 from Andriy Gapon <avg at FreeBSD.org> ---
(In reply to ncrogers from comment #6)
Sorry, I missed it in the wall of stack traces.
To mirror what I wrote in the email:
> v_lock = {lock_object = {lo_name = 0xffffffff8144af45 "zfs",
>      lo_flags = 117112840, lo_data = 0, lo_witness = 0x0},
>      lk_lock = 18446744073709551605, lk_exslpfail = 0, lk_timo = 51,
>      lk_pri = 96}

lk_lock = 18446744073709551605 = 0xfffffffffffffff5
and that looks like LK_SHARERS_LOCK(-1) | LK_EXCLUSIVE_WAITERS.
I suggest that you try to reproduce the problem with INVARIANTS and
INVARIANT_SUPPORT.

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