[Bug 293127] Kernel panic __mtx_lock_sleep due to nfsd?

From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 23 Feb 2026 01:08:54 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=293127

--- Comment #10 from Rick Macklem <rmacklem@FreeBSD.org> ---
(In reply to yuan.mei from comment #7)
This crash is very similar, but occurs in svc_dg.c
(the UDP handling code).

Could you try adding
nfs_server_flags="-t"
to your /etc/rc.conf when
running a kernel with the patch from PR#292884.
(I am wondering if enabling UDP allows the UDP
socket to somehow "go away" prematurely, as well.)

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