[Bug 205058] panic: page fault while in kernel mode

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=205058

            Bug ID: 205058
           Summary: panic: page fault while in kernel mode
           Product: Base System
           Version: 10.2-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: lbolmerg at posteo.de

Created attachment 163896
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=163896&action=edit
core.txt.0

Fatal trap 12: page fault while in kernel mode
cpuid = 2; apic id = 04
fault virtual address   = 0x18
fault code              = supervisor read data, page not present
instruction pointer     = 0x20:0xffffffff80904e29
stack pointer           = 0x28:0xfffffe0114b71830
frame pointer           = 0x28:0xfffffe0114b71a20
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         = 1791 (kdeinit4)
trap number             = 12
panic: page fault
cpuid = 2
KDB: stack backtrace:
#0 0xffffffff80983060 at kdb_backtrace+0x60
#1 0xffffffff80946b46 at vpanic+0x126
#2 0xffffffff80946a13 at panic+0x43
#3 0xffffffff80d498db at trap_fatal+0x36b
#4 0xffffffff80d49bdd at trap_pfault+0x2ed
#5 0xffffffff80d4927a at trap+0x47a
#6 0xffffffff80d2f282 at calltrap+0x8
#7 0xffffffff8090479a at sys_kevent+0x12a
#8 0xffffffff80d4a2af at amd64_syscall+0x40f
#9 0xffffffff80d2f56b at Xfast_syscall+0xfb

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