[Bug 248746] panic during boot in ACPI Platform Error Interfaces

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=248746

            Bug ID: 248746
           Summary: panic during boot in ACPI Platform Error Interfaces
           Product: Base System
           Version: 12.0-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: bugs at FreeBSD.org
          Reporter: curtis at ipv6.occnc.com

Created attachment 217331
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=217331&action=edit
console output on crash

On a supermicro AMD64 EPYC rackmount server with hot swap drives I get
a panic in stable/12 with r >= 364003.

        *   364003   sys/x86/x86/cpu_machdep.c
        *   364003   sys/x86/include/acpica_machdep.h
        *   364003   sys/dev/pci/pci.c
        *   364003   sys/dev/pci/pcivar.h
        *   364003   sys/dev/acpica/acpi_apei.c
        *   364003   sys/dev/acpica/acpi.c
        *   364003   sys/conf/files
        *   364003   sys/arm64/arm64/machdep.c
        *   364003   sys/arm64/include/acpica_machdep.h
?                    sys/amd64/conf/occnc12.amd64

The kernel conf is the one I normally use (lots of stuff I don't use
commented out).

This works (run from /usr/src/sys):

svn update -r364002
( cd amd64/conf/ && config occnc12.amd64 \
  && cd ../compile/occnc12.amd64 \
  && make cleandepend && make depend \
  && make && mv kernel kernel.new || ( echo ; echo FAIL ; echo ) )
# then copy the kernel onto a flash as kernel.new

This doesn't work:

svn update -r364003
[ .. same as above .. ]

Fatal trap 12: page fault while in kernel mode

Can't get a core dump since drivers are not yet probed.  This is a boot from
flash to do the initial install.

The most recent kernel I tried was 364260 .

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