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
--
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Dennis Clarke
RISC-V/SPARC/PPC/ARM/CISC
UNIX and Linux spoken
