[Bug 241417] panic: Fatal trap 1: privileged instruction fault while in kernel mode

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=241417

            Bug ID: 241417
           Summary: panic: Fatal trap 1: privileged instruction fault
                    while in kernel mode
           Product: Base System
           Version: 12.0-RELEASE
          Hardware: i386
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs at FreeBSD.org
          Reporter: nicholas.h.briggs at gmail.com

Created attachment 208510
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=208510&action=edit
core.txt.0 from crash

FreeBSD flap.gateway.sonic.net 12.0-RELEASE-p10 FreeBSD 12.0-RELEASE-p10
GENERIC  i386

+Fatal trap 1: privileged instruction fault while in kernel mode
+cpuid = 0; apic id = 00
+error code             = 0
+instruction pointer    = 0x20:0xffc033d9
+stack pointer          = 0x28:0xfba0bc0
+frame pointer          = 0x28:0xfba0bd0
+code segment           = base 0x0, limit 0xfffff, type 0x1b
+                       = DPL 0, pres 1, def32 1, gran 1
+processor eflags       = resume, IOPL = 0
+current process                = 11 (idle: cpu0)
+trap number            = 1
+panic: privileged instruction fault
+cpuid = 0
+time = 1571652112
+KDB: stack backtrace:
+#0 0x110848f at kdb_backtrace+0x4f
+#1 0x10bb467 at vpanic+0x147
+#2 0x10bb31b at panic+0x1b
+#3 0x16920b5 at trap_fatal+0x395
+#4 0x169144e at trap+0xde
+#5 0xffc0315d at PTDpde+0x4165
+#6 0xa0c89c at acpi_cpu_idle+0x30c
+#7 0x16aa93f at cpu_idle_acpi+0x3f


+#8 0x16aa9fb at cpu_idle+0xab
+#9 0x10ef456 at sched_idletd+0x376
+#10 0x107cad1 at fork_exit+0x71
+#11 0xffc033ba at PTDpde+0x43c2
+Uptime: 2d12h11m14s
+Physical memory: 931 MB
+Dumping 161 MB: 146 130 114 98 82 66 50 34 18 2
+Dump complete

I have attached core.txt.0, and have the vmcore.0 if it is of use.

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