[Bug 232288] i386 boot time panic of head on amd64 machine (PCI BIOS search, 0x49435024)

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=232288

--- Comment #4 from Bjoern A. Zeeb <bz at FreeBSD.org> ---
In anticipation ... I've booted into the panic again:

APIC: CPU 7 has ACPI ID 7
Pentium Pro MTRR support enabled
bios32: Found BIOS32 Service Directory header at 0x4e8500
bios32: Entry = 0xe8510 (4e8510)  Rev = 0  Len = 1
stray irq1


Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 02
fault virtual address   = 0x49435024
fault code              = supervisor write, page not present
instruction pointer     = 0x20:0x4e8510
stack pointer           = 0x28:0x2423b68
frame pointer           = 0x28:0x2423ba0
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = resume, IOPL = 0
current process         = 0 ()
[ thread pid 0 tid 0 ]
Stopped at      0x4e8510
db> show reg
cs                0x20
ds                0x28
es                0x28
fs                 0x8
gs                0x3b
ss                0x28
eax         0x49435024
ecx                  0
edx                  0
ebx                  0
esp          0x2423b68
ebp          0x2423ba0
esi          0x2423bc4
edi          0x1129df7  counter_u64_alloc+0x27
eip           0x4e8510
efl            0x10002
0x4e8510

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