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

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

--- Comment #2 from Nick Briggs <nicholas.h.briggs at gmail.com> ---
This is the code sequence it was executing:

   0x00a0c87c <+748>:   mov    %eax,%edx
   0x00a0c87e <+750>:   in     (%dx),%al
   0x00a0c87f <+751>:   mov    -0x14(%ebp),%ebx
   0x00a0c882 <+754>:   cmpb   $0x0,0x30(%edi,%ebx,4)
   0x00a0c887 <+759>:   je     0xa0c897 <acpi_cpu_idle+775>
   0x00a0c889 <+761>:   mov    0x34(%edi,%ebx,4),%eax
   0x00a0c88d <+765>:   mov    %eax,(%esp)
   0x00a0c890 <+768>:   call   0x16aa370 <acpi_cpu_idle_mwait>
   0x00a0c895 <+773>:   jmp    0xa0c89c <acpi_cpu_idle+780>
   0x00a0c897 <+775>:   call   0x16aa360 <acpi_cpu_c1>
   0x00a0c89c <+780>:   lea    0x30(%edi,%ebx,4),%eax
   0x00a0c8a0 <+784>:   mov    %eax,-0x10(%ebp)
   0x00a0c8a3 <+787>:   call   *0x1d2af74


Are you (Andriy) sure that you're interpreting the stack trace correctly?
I see exactly the same location in the stack trace in, for example, bug
#227654, comment #4

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