Bug 294292 - 'EFI RT page fault' when shutting down the PC
Summary: 'EFI RT page fault' when shutting down the PC
Status: New
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: 15.0-RELEASE
Hardware: amd64 Any
: --- Affects Some People
Assignee: freebsd-bugs (Nobody)
URL:
Keywords: crash
Depends on:
Blocks:
 
Reported: 2026-04-06 23:32 UTC by Alex Matei
Modified: 2026-04-08 14:07 UTC (History)
2 users (show)

See Also:


Attachments
/var/run/dmesg.boot (11.74 KB, text/plain)
2026-04-06 23:32 UTC, Alex Matei
no flags Details
output of 'sysctl machdep.efi_map' (16.71 KB, text/plain)
2026-04-06 23:34 UTC, Alex Matei
no flags Details

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Description Alex Matei 2026-04-06 23:32:01 UTC
Created attachment 269431 [details]
/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 rx0, 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.
Comment 1 Alex Matei 2026-04-06 23:34:14 UTC
Created attachment 269432 [details]
output of 'sysctl machdep.efi_map'
Comment 2 Alex Matei 2026-04-06 23:47:12 UTC
$ freebsd-version
15.0-RELEASE
$
Comment 3 Alex Matei 2026-04-07 05:16:07 UTC
Bug 287422 shows "Status: Closed Not A Bug".
If it's not a bug, what is it?
Comment 4 Martin Filla 2026-04-07 05:46:41 UTC
(In reply to Alex Matei from comment #3)
The developer wrote, "firmware bug" not the kernel bug. Patch should be in CURRENT
Comment 5 Alex Matei 2026-04-07 14:06:06 UTC
(In reply to Martin Filla from comment #4)
Which CURRENT?
Comment 6 Martin Filla 2026-04-08 01:49:14 UTC
(In reply to Alex Matei from comment #5)
main branch is CURRENT (now 16.0)