[Bug 213856] Fatal trap12: page fault while in kernel mode; Supervisor read data, page not present

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=213856

            Bug ID: 213856
           Summary: Fatal trap12: page fault while in kernel mode;
                    Supervisor read data, page not present
           Product: Base System
           Version: 11.0-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: standards
          Assignee: freebsd-standards at FreeBSD.org
          Reporter: arkadiusz.majewski at iptrace.pl
                CC: freebsd-amd64 at FreeBSD.org
                CC: freebsd-amd64 at FreeBSD.org

Recently I've installed 11.0-RELEASEp2.
Afetr 2d14h25m33s system crashed. Please look as follow.

Fatal trap12: page fault while in kernel mode
cpuid = 2 apic id = 02
fault virtual address = 0x48
fault code = supervisor read data, page not present
instruction pointer = 0x28:0xffffffff80e186b0
stack pointer = 0x28:0xfffffe3fc9de37e0
frame pointer = 0x28:0xfffffe3fc9de3840
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 = 17 (pagedaemon)
trap number = 12
panic: page fault
cpuid = 2
KDB: stack backtrace:

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