[Bug 294292] 'EFI RT page fault' when shutting down the PC

From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 06 Apr 2026 23:32:01 UTC 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=294292

            Bug ID: 294292
           Summary: 'EFI RT page fault' when shutting down the PC
           Product: Base System
           Version: 15.0-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: alex@dawnmail.net

Created attachment 269431
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=269431&action=edit
/var/run/dmesg.boot

When shutting down the PC, I get the following error:

...
usbhid3: detached
ubt0: detached
uhub1: detached

Fatal trap 12: page fault while in kernal mode
cpuid = 0; apic id = 00
fault virtual address   = 0x86c56850
fault code              = supervisor read instruction, page not present
instruction pointer     = 0x20:0x86c56850
stack pointer           = 0x28:0xfffffe014a20cb08
frame pointer           = 0x28:0x1
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         = 1 (init)
rdi: 00000000985c10e0 rsi: 0000000000000000 rdx: 000000000311100a
rcx: 0000000000000001  r8: 0000000000000000  r9: 00000000985c10e0
rax: 000000009847da98 rbx: 000000009847dad0 rbp: 0000000000000001
r10: 0000000000000000 r11: 000000000000f800 r12: 0000000000000000
r13: 000000000311100a r14: 00000000985c10e0 r15: 000000000000001f
trap number             = 12
EFI RT page fault
...

Then the computer shuts down.
The error did not occur in FreeBSD 14.2-Release.

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