[Bug 297233] nfs: panic: general protection fault

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D297233

--- Comment #3 from Rick Macklem <[email protected]> ---
Hmm. This Illumos server appears to be broken.
When there is no working callback path, the
server is not supposed to issue delegations,
but it appears to have done so.

Does your kernel have commit 71ac1ec5c9?
(It was committed to main on Apr. 30, 2026,
so if your kernel is built from sources after
that date, it does.)
--> This patch was meant to ensure that NFSv4.0
    servers did not issue delegations, by specifying
    a callback path address of 0.0.0.0.
    If you have this patch, then the NFSv4.0 server
    definitely will not be able to do callbacks.

If the Illumos 4.0 (not 4.1 or 4.2) server is issuing
delegations in this case, I can't think of a way to
fix things. (Maybe Illumos has some "turn off delegations"
switch for their server?)

If you cannot figure out how to disable issuance
of delegations for the Illumos server, you could try
reverting 71ac1ec5c9 (or using a different server that
supports NFSv4.1).

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