[Bug 279939] sysutils/pefs-kmod causes panic when module is loaded

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=279939

            Bug ID: 279939
           Summary: sysutils/pefs-kmod causes panic when module is loaded
           Product: Ports & Packages
           Version: Latest
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: Individual Port(s)
          Assignee: ports-bugs@FreeBSD.org
          Reporter: billblake2018@gmail.com
                CC: darius@dons.net.au
             Flags: maintainer-feedback?(darius@dons.net.au)
                CC: darius@dons.net.au

I just did a fresh install of 14.1 and attempted to kldload the pefs module.  I
got the following panic:

Fatal trap 18: integer divide fault while in kernel mode
cpuid = 2; apic id = 02
instruction pointer   = 0x20:0xffffffff8080b7a4
stack pointer         = 0x28:0xfffffe00848337c0
frame pointer         = 0x28:0xfffffe0084833860
code segment          = base 0x0, limit 0xfffff, type 0x1b
                      = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags      = interrupt enabled, resume, IOPL = 0
current process               = 27 (kldload)
rdi: 0000000000000000 rsi: 0000000000000000 rdx: 0000000000000000
rcx: 0000000000000000  r8: 0000000000200000  r9: 0000000000000000
rax: 00000000fffffbe0 rbx: 0000000000000000 rbp: fffffe0084833860
r10: 0000000000000000 r11: 3ffffffffffffff8 r12: 00000000fffffc00
r13: 0000000000000000 r14: 0000000000000000 r15: 1ffffffffffffff8
trap number           = 18
panic: integer divide fault
cpuid = 2
time = 1719189798

The last pefs statement executed was in
sys/fs/pefs/pefs_crypto.c:pefs_crypto_init().  The first statement of that
function is:

pefs_ctx_zone = uma_zcreate("pefs_ctx", sizeof(struct pefs_ctx), NULL,
pefs_zone_dtor_bzero, NULL, NULL, UMA_ALIGN_CACHE, 0);

I put prints before and after that statement; the before printed, the after did
not.

The pefs source apparently did not change between 14.0 and 14.1, and this panic
did not happen on 14.0.

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