[Bug 272870] CURRENT kernel panic running poudriere in vm host is 13.2

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=272870

            Bug ID: 272870
           Summary: CURRENT kernel panic running poudriere in vm host is
                    13.2
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: dgilbert@eicat.ca

This kernel panic was running -CURRENT vm poudriere on a 13.2 host.

HOST: 13.2-RELEASE, Threadripper 1900X (8 cpu 2 thread), 
    128G RAM, 100T zfs, 256G nvme swap

VM: -CURRENT (main-n264192-b36f469a15ec), 15 cpu (one less than host), 
    64G RAM, 200G zfs, 128G swap

The crash message that kgdb reads is:

Unread portion of the kernel message buffer:
panic: deadlres_td_sleep_q: possible deadlock detected for 0xfffffe02134d8c80
(chmod), blocked for 180086 ticks

and the active process bit is:

__curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:59
59              __asm("movq %%gs:%P1,%0" : "=r" (td) : "n" (offsetof(struct
pcpu,

This is the last updated poudriere page:

https://pkg.daveg.ca/build.html?mastername=freebsd_14_0_x64-HEAD&build=2023-07-31_17h53m26s

vmcore and kernel available on request --- they're quite large.  I can also
provide access to them with kgdb and shell.

I will attach what I have

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