Date: Sat, 4 Jan 2025 06:52:07 -0500 From: Dennis Clarke <dclarke@blastwave.org> To: freebsd-current@freebsd.org Subject: Re: EFI RT page fault in init pid = 1 Message-ID: <353b0df1-80f3-4b7b-a26d-9a3a8efd2686@blastwave.org> In-Reply-To: <Z3kfTtxN5fUGFL9y@kib.kiev.ua> References: <32e6b7cd-a4a3-425b-9569-5f72eea59be7@blastwave.org> <Z3kfTtxN5fUGFL9y@kib.kiev.ua>
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On 1/4/25 06:45, Konstantin Belousov wrote:
> On Fri, Jan 03, 2025 at 06:43:55PM -0500, Dennis Clarke wrote:
>>
>> I wonder if anyone else has seen such a message at shutdown :
>>
>>
>>
>> Fatal trap 12: page fault while in kernel mode
>> cpuid = 0; apic id = 00
>> fault virtual address = 0x0
>> fault code = supervisor read data, page not present
>> instruction pointer = 0x20:0x7c38f87a
>> stack pointer = 0x28:0xfffffe035500bba8
>> frame pointer = 0x28:0x5
>> 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: fffffe035500bcd8 rsi: 0000000000000004 rdx: 0000000000000000
>> rcx: 0000000000000000 r8: 0000000000000000 r9: 0000000000000000
>> rax: 00000000800b0040 rbx: 0000000000000002 rbp: 0000000000000005
>> r10: 00000000800b0000 r11: 0000000000000000 r12: fffff80103969000
>> r13: fffff80101c57140 r14: 0000000000004008 r15: fffff801019895a8
>> trap number = 12
>> EFI RT page fault
>> acpi0: Powering system off
>>
>> I have not seen such a thing while the machine was running.
>>
>> Machine in question is 15.0-CURRENT :
> The reporting of the faults during the calls into EFI RT was added recently.
> Before that, such faults were silently ignored. Now, the report is printed
> and then the fault is ignored.
>
> There is no actionable items for users; a developer might be interested.
>
I see ! Thank you. No need to redo buildworld etc etc and yes this
seems to be consistent now and even the address data is the same.
All except for r13 :
Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address = 0x0
fault code = supervisor read data, page not present
instruction pointer = 0x20:0x7c38f87a
stack pointer = 0x28:0xfffffe035500bba8
frame pointer = 0x28:0x5
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: fffffe035500bcd8 rsi: 0000000000000004 rdx: 0000000000000000
rcx: 0000000000000000 r8: 0000000000000000 r9: 0000000000000000
rax: 00000000800b0040 rbx: 0000000000000002 rbp: 0000000000000005
r10: 00000000800b0000 r11: 0000000000000000 r12: fffff80103969000
r13: fffff80101c56140 r14: 0000000000004008 r15: fffff801019895a8
trap number = 12
EFI RT page fault
acpi0: Powering system off
--
--
Dennis Clarke
RISC-V/SPARC/PPC/ARM/CISC
UNIX and Linux spoken
help
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