On Sat, Feb 22, 2020 at 04:55:13PM +0100, Ard Biesheuvel wrote:
> This series is another part of my effort to reduce the level of knowledge
> on the part of the bootloader or firmware of internal per-architecture
> details regarding where/how the kernel is loaded and where its initrd and
> other context data are passed.
>
...
>
> What remains is mixed mode boot, which also needs the EFI handover protocol
> regardless of whether an initrd is loaded or not. So let's get rid of that
> requirement, and take advantage of the fact that EDK2 based firmware does
> support LoadImage() for X64 binaries on IA32 firmware, which means we can
> rely on the secure boot and measured boot checks being performed by the
> firmware. The only thing we need to put on top is a way to discover the
> non-native entrypoint into the binary in a way that does not rely on x86
> specific headers and data structures.
>
> So let's introduce a new .compat header in the PE/COFF metadata of the
> bzImage, and populate it with a <machine type, entrypoint> tuple, allowing
> a generic EFI loader to decide whether the entrypoint supports its native
> machine type, and invoke it as an ordinary EFI application entrypoint.
> Since we will not be passing a bootparams structure, we need to discover
> the base of the image (which contains the setup header) via the loaded
> image protocol before we can enter the kernel in 32-bit mode at startup_32()
>
> A loader implementation for OVMF can be found at [2]. Note that this loader
> code is fully generic, and permits mixed mode images to be launched from
> the UEFI shell or other generic components based on LoadImage/Startimage.
> It could be used without modifications if other architectures ever emerge
> that support kernels that can be invoked from a non-native (but cross-type
> supported) loader.
>
> [0] https://lore.kernel.org/linux-arm-kernel/20200206140352.6300-1-ardb@xxxxxxxxxx/
> [1] https://lore.kernel.org/linux-efi/20200216141104.21477-1-ardb@xxxxxxxxxx/
> [2] https://github.com/ardbiesheuvel/edk2/commits/linux-efi-generic
>
Hi Ard, I'm getting a kernel panic with this series using the compat
entry point.
What I'm doing is creating an x86-64 defconfig based on tip:efi/core,
and then running it via
$ qemu-system-x86_64 -cpu Haswell -pflash qemu/OVMF_64.fd \
-drive file=fat:rw:qemu/boot -nographic -m 3072
(The bzImage is in qemu/boot) Then starting it from the UEFI shell.
FS0:\> bzImage earlyprintk=ttyS0,keep efi=debug
First problem is that qemu loads the bzImage above 2Gb causing a very
early crash. Attached patch solves that issue and lets the boot proceed.
However, with KASLR enabled, quite frequently I get the kernel panic in
the attached log. Haven't figured out exactly where it comes from.
Thanks.
>From 3c3598944a88791ba8d1925791377c39fbaf3c0d Mon Sep 17 00:00:00 2001
From: Arvind Sankar <nivedita@xxxxxxxxxxxx>
Date: Sat, 29 Feb 2020 19:04:42 -0500
Subject: [PATCH] x86/boot: Use unsigned comparison for addresses
The load address is compared with LOAD_PHYSICAL_ADDR using a signed
comparison currently (using jge instruction).
When loading a 64-bit kernel using the new efi32_pe_entry point added by
commit 97aa276579b2 ("efi/x86: Add true mixed mode entry point into
.compat section") using qemu with -m 3072, the firmware actually loads
us above 2Gb, resulting in a very early crash.
Use jae instruction to perform unsigned comparison instead, as physical
addresses should be considered as unsigned.
Signed-off-by: Arvind Sankar <nivedita@xxxxxxxxxxxx>
---
arch/x86/boot/compressed/head_32.S | 2 +-
arch/x86/boot/compressed/head_64.S | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S
index 2f8138b71ea9..2ba924c6ccaf 100644
--- a/arch/x86/boot/compressed/head_32.S
+++ b/arch/x86/boot/compressed/head_32.S
@@ -105,7 +105,7 @@ SYM_FUNC_START(startup_32)
notl %eax
andl %eax, %ebx
cmpl $LOAD_PHYSICAL_ADDR, %ebx
- jge 1f
+ jae 1f
#endif
movl $LOAD_PHYSICAL_ADDR, %ebx
1:
diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S
index fcf8feaa57ea..e3664ef11047 100644
--- a/arch/x86/boot/compressed/head_64.S
+++ b/arch/x86/boot/compressed/head_64.S
@@ -105,7 +105,7 @@ SYM_FUNC_START(startup_32)
notl %eax
andl %eax, %ebx
cmpl $LOAD_PHYSICAL_ADDR, %ebx
- jge 1f
+ jae 1f
#endif
movl $LOAD_PHYSICAL_ADDR, %ebx
1:
@@ -305,7 +305,7 @@ SYM_CODE_START(startup_64)
notq %rax
andq %rax, %rbp
cmpq $LOAD_PHYSICAL_ADDR, %rbp
- jge 1f
+ jae 1f
#endif
movq $LOAD_PHYSICAL_ADDR, %rbp
1:
--
2.24.1
$ qemu-system-x86_64 -cpu Haswell -pflash qemu/OVMF-mixed-mode-compat-section.fd -drive file=fat:rw:qemu/boot -nographic -m 3072
UEFI Interactive Shell v2.2
EDK II
UEFI v2.70 (EDK II, 0x00010000)
Mapping table
FS0: Alias(s):HD0a1:;BLK1:
PciRoot(0x0)/Pci(0x1,0x1)/Ata(0x0)/HD(1,MBR,0xBE1AFDFA,0x3F,0xFBFC1)
BLK0: Alias(s):
PciRoot(0x0)/Pci(0x1,0x1)/Ata(0x0)
BLK2: Alias(s):
PciRoot(0x0)/Pci(0x1,0x1)/Ata(0x0)
Press ESC in 5 seconds to skip startup.nsh or any other key to continue.
Shell> fs0:
FS0:\> bzImage64 earlyprintk=ttyS0,keep efi=debug
early console in extract_kernel
input_data: 0x0000000002b4d3ac
input_len: 0x000000000085e2d6
output: 0x0000000001400000
output_len: 0x0000000001f7b8d4
kernel_total_size: 0x0000000001c2c000
needed_size: 0x0000000002000000
trampoline_32bit: 0x000000000009d000
booted via startup_64()
Physical KASLR using RDRAND RDTSC...
Virtual KASLR using RDRAND RDTSC...
Decompressing Linux... Parsing ELF... Performing relocations... done.
Booting the kernel.
[ 0.000000] Linux version 5.6.0-rc3+ (arvind@rani) (gcc version 9.2.0 (Gentoo Hardened 9.2.0-r4 p5)) #3 SMP Sun Mar 1 11:49:45 EST 2020
[ 0.000000] Command line: bzImage64 earlyprintk=ttyS0,keep efi=debug
[ 0.000000] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
[ 0.000000] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
[ 0.000000] x86/fpu: Enabled xstate features 0x3, context size is 576 bytes, using 'standard' format.
[ 0.000000] BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009ffff] usable
[ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x0000000000805fff] usable
[ 0.000000] BIOS-e820: [mem 0x0000000000806000-0x0000000000807fff] ACPI NVS
[ 0.000000] BIOS-e820: [mem 0x0000000000808000-0x000000000080ffff] usable
[ 0.000000] BIOS-e820: [mem 0x0000000000810000-0x00000000008fffff] ACPI NVS
[ 0.000000] BIOS-e820: [mem 0x0000000000900000-0x00000000be933fff] usable
[ 0.000000] BIOS-e820: [mem 0x00000000be934000-0x00000000be945fff] ACPI NVS
[ 0.000000] BIOS-e820: [mem 0x00000000be946000-0x00000000be960fff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000be961000-0x00000000bea6bfff] usable
[ 0.000000] BIOS-e820: [mem 0x00000000bea6c000-0x00000000beb1afff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000beb1b000-0x00000000bfb9afff] usable
[ 0.000000] BIOS-e820: [mem 0x00000000bfb9b000-0x00000000bfbf2fff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000bfbf3000-0x00000000bfbfafff] ACPI data
[ 0.000000] BIOS-e820: [mem 0x00000000bfbfb000-0x00000000bfbfefff] ACPI NVS
[ 0.000000] BIOS-e820: [mem 0x00000000bfbff000-0x00000000bfef3fff] usable
[ 0.000000] BIOS-e820: [mem 0x00000000bfef4000-0x00000000bff77fff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000bff78000-0x00000000bfffffff] ACPI NVS
[ 0.000000] BIOS-e820: [mem 0x00000000ffc00000-0x00000000ffffffff] reserved
[ 0.000000] printk: console [earlyser0] enabled
[ 0.000000] NX (Execute Disable) protection: active
[ 0.000000] extended physical RAM map:
[ 0.000000] reserve setup_data: [mem 0x0000000000000000-0x000000000009ffff] usable
[ 0.000000] reserve setup_data: [mem 0x0000000000100000-0x0000000000805fff] usable
[ 0.000000] reserve setup_data: [mem 0x0000000000806000-0x0000000000807fff] ACPI NVS
[ 0.000000] reserve setup_data: [mem 0x0000000000808000-0x000000000080ffff] usable
[ 0.000000] reserve setup_data: [mem 0x0000000000810000-0x00000000008fffff] ACPI NVS
[ 0.000000] reserve setup_data: [mem 0x0000000000900000-0x00000000be58700f] usable
[ 0.000000] reserve setup_data: [mem 0x00000000be587010-0x00000000be5c1a4f] usable
[ 0.000000] reserve setup_data: [mem 0x00000000be5c1a50-0x00000000be5e800f] usable
[ 0.000000] reserve setup_data: [mem 0x00000000be5e8010-0x00000000be5f184f] usable
[ 0.000000] reserve setup_data: [mem 0x00000000be5f1850-0x00000000be933fff] usable
[ 0.000000] reserve setup_data: [mem 0x00000000be934000-0x00000000be945fff] ACPI NVS
[ 0.000000] reserve setup_data: [mem 0x00000000be946000-0x00000000be960fff] reserved
[ 0.000000] reserve setup_data: [mem 0x00000000be961000-0x00000000bea6bfff] usable
[ 0.000000] reserve setup_data: [mem 0x00000000bea6c000-0x00000000beb1afff] reserved
[ 0.000000] reserve setup_data: [mem 0x00000000beb1b000-0x00000000bfb9afff] usable
[ 0.000000] reserve setup_data: [mem 0x00000000bfb9b000-0x00000000bfbf2fff] reserved
[ 0.000000] reserve setup_data: [mem 0x00000000bfbf3000-0x00000000bfbfafff] ACPI data
[ 0.000000] reserve setup_data: [mem 0x00000000bfbfb000-0x00000000bfbfefff] ACPI NVS
[ 0.000000] reserve setup_data: [mem 0x00000000bfbff000-0x00000000bfef3fff] usable
[ 0.000000] reserve setup_data: [mem 0x00000000bfef4000-0x00000000bff77fff] reserved
[ 0.000000] reserve setup_data: [mem 0x00000000bff78000-0x00000000bfffffff] ACPI NVS
[ 0.000000] reserve setup_data: [mem 0x00000000ffc00000-0x00000000ffffffff] reserved
[ 0.000000] efi: EFI v2.70 by EDK II
[ 0.000000] efi: SMBIOS=0xbfbcc000 ACPI=0xbfbfa000 ACPI 2.0=0xbfbfa014 MEMATTR=0xbe649190
[ 0.000000] efi: mem00: [Boot Code | | | | | | | | | |WB|WT|WC|UC] range=[0x0000000000000000-0x0000000000000fff] (0MB)
[ 0.000000] efi: mem01: [Conventional Memory| | | | | | | | | |WB|WT|WC|UC] range=[0x0000000000001000-0x000000000009ffff] (0MB)
[ 0.000000] efi: mem02: [Conventional Memory| | | | | | | | | |WB|WT|WC|UC] range=[0x0000000000100000-0x0000000000805fff] (7MB)
[ 0.000000] efi: mem03: [ACPI Memory NVS | | | | | | | | | |WB|WT|WC|UC] range=[0x0000000000806000-0x0000000000807fff] (0MB)
[ 0.000000] efi: mem04: [Conventional Memory| | | | | | | | | |WB|WT|WC|UC] range=[0x0000000000808000-0x000000000080ffff] (0MB)
[ 0.000000] efi: mem05: [ACPI Memory NVS | | | | | | | | | |WB|WT|WC|UC] range=[0x0000000000810000-0x00000000008fffff] (0MB)
[ 0.000000] efi: mem06: [Boot Data | | | | | | | | | |WB|WT|WC|UC] range=[0x0000000000900000-0x00000000013fffff] (11MB)
[ 0.000000] efi: mem07: [Loader Data | | | | | | | | | |WB|WT|WC|UC] range=[0x0000000001400000-0x00000000033e5fff] (31MB)
[ 0.000000] efi: mem08: [Conventional Memory| | | | | | | | | |WB|WT|WC|UC] range=[0x00000000033e6000-0x00000000b9d8dfff] (2921MB)
[ 0.000000] efi: mem09: [Loader Code | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000b9d8e000-0x00000000bbf77fff] (33MB)
[ 0.000000] efi: mem10: [Boot Data | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bbf78000-0x00000000bbf97fff] (0MB)
[ 0.000000] efi: mem11: [Conventional Memory| | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bbf98000-0x00000000be49bfff] (37MB)
[ 0.000000] efi: mem12: [Loader Code | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be49c000-0x00000000be56dfff] (0MB)
[ 0.000000] efi: mem13: [Conventional Memory| | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be56e000-0x00000000be586fff] (0MB)
[ 0.000000] efi: mem14: [Loader Data | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be587000-0x00000000be5c1fff] (0MB)
[ 0.000000] efi: mem15: [Boot Data | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be5c2000-0x00000000be5dffff] (0MB)
[ 0.000000] efi: mem16: [Conventional Memory| | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be5e0000-0x00000000be5e6fff] (0MB)
[ 0.000000] efi: mem17: [Loader Data | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be5e7000-0x00000000be5f7fff] (0MB)
[ 0.000000] efi: mem18: [Boot Data | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be5f8000-0x00000000be7ebfff] (1MB)
[ 0.000000] efi: mem19: [Boot Code | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be7ec000-0x00000000be933fff] (1MB)
[ 0.000000] efi: mem20: [ACPI Memory NVS | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be934000-0x00000000be945fff] (0MB)
[ 0.000000] efi: mem21: [Reserved | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be946000-0x00000000be960fff] (0MB)
[ 0.000000] efi: mem22: [Boot Code | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be961000-0x00000000bea6bfff] (1MB)
[ 0.000000] efi: mem23: [Runtime Data |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bea6c000-0x00000000bea70fff] (0MB)
[ 0.000000] efi: mem24: [Runtime Code |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bea71000-0x00000000bea75fff] (0MB)
[ 0.000000] efi: mem25: [Runtime Data |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bea76000-0x00000000bea7afff] (0MB)
[ 0.000000] efi: mem26: [Runtime Code |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bea7b000-0x00000000bea7ffff] (0MB)
[ 0.000000] efi: mem27: [Runtime Data |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bea80000-0x00000000bea84fff] (0MB)
[ 0.000000] efi: mem28: [Runtime Code |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bea85000-0x00000000bea8bfff] (0MB)
[ 0.000000] efi: mem29: [Runtime Data |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bea8c000-0x00000000beb1afff] (0MB)
[ 0.000000] efi: mem30: [Boot Data | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000beb1b000-0x00000000bfa1afff] (15MB)
[ 0.000000] efi: mem31: [Boot Code | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfa1b000-0x00000000bfb9afff] (1MB)
[ 0.000000] efi: mem32: [Runtime Code |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfb9b000-0x00000000bfbcafff] (0MB)
[ 0.000000] efi: mem33: [Runtime Data |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfbcb000-0x00000000bfbeefff] (0MB)
[ 0.000000] efi: mem34: [Reserved | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfbef000-0x00000000bfbf2fff] (0MB)
[ 0.000000] efi: mem35: [ACPI Reclaim Memory| | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfbf3000-0x00000000bfbfafff] (0MB)
[ 0.000000] efi: mem36: [ACPI Memory NVS | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfbfb000-0x00000000bfbfefff] (0MB)
[ 0.000000] efi: mem37: [Boot Data | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfbff000-0x00000000bfdfffff] (2MB)
[ 0.000000] efi: mem38: [Conventional Memory| | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfe00000-0x00000000bfe89fff] (0MB)
[ 0.000000] efi: mem39: [Boot Data | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfe8a000-0x00000000bfea9fff] (0MB)
[ 0.000000] efi: mem40: [Boot Code | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfeaa000-0x00000000bfeccfff] (0MB)
[ 0.000000] efi: mem41: [Boot Data | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfecd000-0x00000000bfed5fff] (0MB)
[ 0.000000] efi: mem42: [Boot Code | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfed6000-0x00000000bfef3fff] (0MB)
[ 0.000000] efi: mem43: [Runtime Data |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfef4000-0x00000000bff77fff] (0MB)
[ 0.000000] efi: mem44: [ACPI Memory NVS | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bff78000-0x00000000bfffffff] (0MB)
[ 0.000000] efi: mem45: [Memory Mapped I/O |RUN| | | | | | | | | | | |UC] range=[0x00000000ffc00000-0x00000000ffffffff] (4MB)
[ 0.000000] SMBIOS 2.8 present.
[ 0.000000] DMI: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 0.0.0 02/06/2015
[ 0.000000] tsc: Fast TSC calibration using PIT
[ 0.000000] tsc: Detected 2195.098 MHz processor
[ 0.001418] last_pfn = 0xbfef4 max_arch_pfn = 0x400000000
[ 0.002451] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT
Memory KASLR using RDRAND RDTSC...
[ 0.019655] check: Scanning 1 areas for low memory corruption
[ 0.025410] Secure boot disabled
[ 0.025847] ACPI: Early table checksum verification disabled
[ 0.026363] ACPI: RSDP 0x00000000BFBFA014 000024 (v02 BOCHS )
[ 0.026710] ACPI: XSDT 0x00000000BFBF90E8 000044 (v01 BOCHS BXPCFACP 00000001 01000013)
[ 0.027515] ACPI: FACP 0x00000000BFBF6000 000074 (v01 BOCHS BXPCFACP 00000001 BXPC 00000001)
[ 0.028190] ACPI: DSDT 0x00000000BFBF7000 00140B (v01 BOCHS BXPCDSDT 00000001 BXPC 00000001)
[ 0.028566] ACPI: FACS 0x00000000BFBFD000 000040
[ 0.028792] ACPI: APIC 0x00000000BFBF5000 000078 (v01 BOCHS BXPCAPIC 00000001 BXPC 00000001)
[ 0.029091] ACPI: HPET 0x00000000BFBF4000 000038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001)
[ 0.029390] ACPI: BGRT 0x00000000BFBF3000 000038 (v01 INTEL EDK2 00000002 01000013)
[ 0.031325] No NUMA configuration found
[ 0.031502] Faking a node at [mem 0x0000000000000000-0x00000000bfef3fff]
[ 0.032286] NODE_DATA(0) allocated [mem 0xbfe86000-0xbfe89fff]
[ 0.034426] Zone ranges:
[ 0.034560] DMA [mem 0x0000000000001000-0x0000000000ffffff]
[ 0.034797] DMA32 [mem 0x0000000001000000-0x00000000bfef3fff]
[ 0.035028] Normal empty
[ 0.035155] Movable zone start for each node
[ 0.035313] Early memory node ranges
[ 0.035461] node 0: [mem 0x0000000000001000-0x000000000009ffff]
[ 0.035796] node 0: [mem 0x0000000000100000-0x0000000000805fff]
[ 0.036007] node 0: [mem 0x0000000000808000-0x000000000080ffff]
[ 0.036228] node 0: [mem 0x0000000000900000-0x00000000be933fff]
[ 0.036459] node 0: [mem 0x00000000be961000-0x00000000bea6bfff]
[ 0.036671] node 0: [mem 0x00000000beb1b000-0x00000000bfb9afff]
[ 0.036876] node 0: [mem 0x00000000bfbff000-0x00000000bfef3fff]
[ 0.037937] Zeroed struct page in unavailable ranges: 927 pages
[ 0.038083] Initmem setup node 0 [mem 0x0000000000001000-0x00000000bfef3fff]
[ 0.119644] ACPI: PM-Timer IO Port: 0xb008
[ 0.120357] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[ 0.120983] IOAPIC[0]: apic_id 0, version 32, address 0xfec00000, GSI 0-23
[ 0.121322] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[ 0.121779] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
[ 0.122002] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.122319] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
[ 0.122546] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
[ 0.122976] Using ACPI (MADT) for SMP configuration information
[ 0.123218] ACPI: HPET id: 0x8086a201 base: 0xfed00000
[ 0.124945] smpboot: Allowing 1 CPUs, 0 hotplug CPUs
[ 0.126014] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
[ 0.126292] PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000fffff]
[ 0.126547] PM: hibernation: Registered nosave memory: [mem 0x00806000-0x00807fff]
[ 0.126796] PM: hibernation: Registered nosave memory: [mem 0x00810000-0x008fffff]
[ 0.127046] PM: hibernation: Registered nosave memory: [mem 0xbe587000-0xbe587fff]
[ 0.127315] PM: hibernation: Registered nosave memory: [mem 0xbe5c1000-0xbe5c1fff]
[ 0.127593] PM: hibernation: Registered nosave memory: [mem 0xbe5e8000-0xbe5e8fff]
[ 0.127864] PM: hibernation: Registered nosave memory: [mem 0xbe5f1000-0xbe5f1fff]
[ 0.128162] PM: hibernation: Registered nosave memory: [mem 0xbe640000-0xbe648fff]
[ 0.128446] PM: hibernation: Registered nosave memory: [mem 0xbe934000-0xbe945fff]
[ 0.128735] PM: hibernation: Registered nosave memory: [mem 0xbe946000-0xbe960fff]
[ 0.128975] PM: hibernation: Registered nosave memory: [mem 0xbea6c000-0xbeb1afff]
[ 0.129234] PM: hibernation: Registered nosave memory: [mem 0xbfb9b000-0xbfbf2fff]
[ 0.129495] PM: hibernation: Registered nosave memory: [mem 0xbfbf3000-0xbfbfafff]
[ 0.129757] PM: hibernation: Registered nosave memory: [mem 0xbfbfb000-0xbfbfefff]
[ 0.130125] [mem 0xc0000000-0xffbfffff] available for PCI devices
[ 0.130766] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1910969940391419 ns
[ 0.141134] setup_percpu: NR_CPUS:64 nr_cpumask_bits:64 nr_cpu_ids:1 nr_node_ids:1
[ 0.147826] percpu: Embedded 53 pages/cpu s176472 r8192 d32424 u2097152
[ 0.150221] Built 1 zonelists, mobility grouping on. Total pages: 771412
[ 0.150451] Policy zone: DMA32
[ 0.150704] Kernel command line: bzImage64 earlyprintk=ttyS0,keep efi=debug
[ 0.161459] Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes, linear)
[ 0.231164] Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes, linear)
[ 0.233207] mem auto-init: stack:off, heap alloc:off, heap free:off
[ 0.253204] Memory: 3024044K/3142020K available (14340K kernel code, 1520K rwdata, 3304K rodata, 1184K init, 1112K bss, 117976K reserved, 0K cma-reserved)
[ 0.257804] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.259019] Kernel/User page tables isolation: enabled
[ 0.267142] rcu: Hierarchical RCU implementation.
[ 0.267376] rcu: RCU event tracing is enabled.
[ 0.267561] rcu: RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=1.
[ 0.267915] rcu: RCU calculated value of scheduler-enlistment delay is 100 jiffies.
[ 0.268225] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[ 0.270606] NR_IRQS: 4352, nr_irqs: 256, preallocated irqs: 16
[ 0.278938] random: get_random_bytes called from start_kernel+0x546/0x716 with crng_init=0
[ 0.281978] Console: colour dummy device 80x25
[ 0.285564] printk: console [tty0] enabled
[ 0.286640] ACPI: Core revision 20200110
[ 0.290843] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604467 ns
[ 0.294895] APIC: Switch to symmetric I/O mode setup
[ 0.298636] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[ 0.304234] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x1fa41c1cc38, max_idle_ns: 440795210299 ns
[ 0.305191] Calibrating delay loop (skipped), value calculated using timer frequency.. 4390.19 BogoMIPS (lpj=2195098)
[ 0.305662] pid_max: default: 32768 minimum: 301
[ 0.311267] efi: EFI runtime memory map:
[ 0.311460] efi: mem00: [Boot Code |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x0000000000000000-0x0000000000000fff] (0MB)
[ 0.311881] efi: mem01: [Conventional Memory| | | | | | | | | |WB|WT|WC|UC] range=[0x0000000000001000-0x000000000009ffff] (0MB)
[ 0.312000] efi: mem02: [Conventional Memory| | | | | | | | | |WB|WT|WC|UC] range=[0x0000000000100000-0x0000000000805fff] (7MB)
[ 0.312431] efi: mem03: [Conventional Memory| | | | | | | | | |WB|WT|WC|UC] range=[0x0000000000808000-0x000000000080ffff] (0MB)
[ 0.312998] efi: mem04: [Boot Data | | | | | | | | | |WB|WT|WC|UC] range=[0x0000000000900000-0x00000000013fffff] (11MB)
[ 0.313425] efi: mem05: [Loader Data | | | | | | | | | |WB|WT|WC|UC] range=[0x0000000001400000-0x00000000033e5fff] (31MB)
[ 0.313997] efi: mem06: [Conventional Memory| | | | | | | | | |WB|WT|WC|UC] range=[0x00000000033e6000-0x00000000b9d8dfff] (2921MB)
[ 0.314431] efi: mem07: [Loader Code | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000b9d8e000-0x00000000bbf77fff] (33MB)
[ 0.314998] efi: mem08: [Boot Data | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bbf78000-0x00000000bbf97fff] (0MB)
[ 0.315463] efi: mem09: [Conventional Memory| | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bbf98000-0x00000000be49bfff] (37MB)
[ 0.315998] efi: mem10: [Loader Code | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be49c000-0x00000000be56dfff] (0MB)
[ 0.316459] efi: mem11: [Conventional Memory| | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be56e000-0x00000000be586fff] (0MB)
[ 0.316878] efi: mem12: [Loader Data | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be587000-0x00000000be5c1fff] (0MB)
[ 0.316996] efi: mem13: [Boot Data | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be5c2000-0x00000000be5dffff] (0MB)
[ 0.317402] efi: mem14: [Conventional Memory| | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be5e0000-0x00000000be5e6fff] (0MB)
[ 0.318015] efi: mem15: [Loader Data | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be5e7000-0x00000000be5f7fff] (0MB)
[ 0.318496] efi: mem16: [Boot Data |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x00000000be5f8000-0x00000000be7ebfff] (1MB)
[ 0.319015] efi: mem17: [Boot Code | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be7ec000-0x00000000be933fff] (1MB)
[ 0.319430] efi: mem18: [Boot Code | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000be961000-0x00000000bea6bfff] (1MB)
[ 0.319997] efi: mem19: [Runtime Data |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bea6c000-0x00000000bea70fff] (0MB)
[ 0.320423] efi: mem20: [Runtime Code |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bea71000-0x00000000bea75fff] (0MB)
[ 0.320997] efi: mem21: [Runtime Data |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bea76000-0x00000000bea7afff] (0MB)
[ 0.321425] efi: mem22: [Runtime Code |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bea7b000-0x00000000bea7ffff] (0MB)
[ 0.321843] efi: mem23: [Runtime Data |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bea80000-0x00000000bea84fff] (0MB)
[ 0.321998] efi: mem24: [Runtime Code |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bea85000-0x00000000bea8bfff] (0MB)
[ 0.322433] efi: mem25: [Runtime Data |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bea8c000-0x00000000beb1afff] (0MB)
[ 0.322996] efi: mem26: [Boot Data | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000beb1b000-0x00000000bfa1afff] (15MB)
[ 0.323376] efi: mem27: [Boot Code | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfa1b000-0x00000000bfb9afff] (1MB)
[ 0.323997] efi: mem28: [Runtime Code |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfb9b000-0x00000000bfbcafff] (0MB)
[ 0.324390] efi: mem29: [Runtime Data |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfbcb000-0x00000000bfbeefff] (0MB)
[ 0.324754] efi: mem30: [Boot Data | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfbff000-0x00000000bfdfffff] (2MB)
[ 0.325020] efi: mem31: [Conventional Memory| | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfe00000-0x00000000bfe89fff] (0MB)
[ 0.325422] efi: mem32: [Boot Data | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfe8a000-0x00000000bfea9fff] (0MB)
[ 0.326015] efi: mem33: [Boot Code | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfeaa000-0x00000000bfeccfff] (0MB)
[ 0.326457] efi: mem34: [Boot Data | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfecd000-0x00000000bfed5fff] (0MB)
[ 0.326997] efi: mem35: [Boot Code | | | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfed6000-0x00000000bfef3fff] (0MB)
[ 0.327436] efi: mem36: [Runtime Data |RUN| | | | | | | | |WB|WT|WC|UC] range=[0x00000000bfef4000-0x00000000bff77fff] (0MB)
[ 0.327997] efi: mem37: [Memory Mapped I/O |RUN| | | | | | | | | | | |UC] range=[0x00000000ffc00000-0x00000000ffffffff] (4MB)
[ 0.334217] efi: memattr: Processing EFI Memory Attributes table:
[ 0.334653] efi: memattr: 0x0000bea6c000-0x0000bea70fff [Runtime Data |RUN| | | |XP| | | | | | | | ]
[ 0.335239] efi: memattr: 0x0000bea71000-0x0000bea71fff [Runtime Code |RUN| | | |XP| | | | | | | | ]
[ 0.335761] efi: memattr: 0x0000bea72000-0x0000bea73fff [Runtime Code |RUN| | | | | | |RO| | | | | ]
[ 0.336162] efi: memattr: 0x0000bea74000-0x0000bea75fff [Runtime Code |RUN| | | |XP| | | | | | | | ]
[ 0.337072] efi: memattr: 0x0000bea76000-0x0000bea7afff [Runtime Data |RUN| | | |XP| | | | | | | | ]
[ 0.337634] efi: memattr: 0x0000bea7b000-0x0000bea7bfff [Runtime Code |RUN| | | |XP| | | | | | | | ]
[ 0.338127] efi: memattr: 0x0000bea7c000-0x0000bea7dfff [Runtime Code |RUN| | | | | | |RO| | | | | ]
[ 0.338647] efi: memattr: 0x0000bea7e000-0x0000bea7ffff [Runtime Code |RUN| | | |XP| | | | | | | | ]
[ 0.339136] efi: memattr: 0x0000bea80000-0x0000bea84fff [Runtime Data |RUN| | | |XP| | | | | | | | ]
[ 0.339636] efi: memattr: 0x0000bea85000-0x0000bea85fff [Runtime Code |RUN| | | |XP| | | | | | | | ]
[ 0.340117] efi: memattr: 0x0000bea86000-0x0000bea89fff [Runtime Code |RUN| | | | | | |RO| | | | | ]
[ 0.341013] efi: memattr: 0x0000bea8a000-0x0000bea8bfff [Runtime Code |RUN| | | |XP| | | | | | | | ]
[ 0.341511] efi: memattr: 0x0000bea8c000-0x0000beb1afff [Runtime Data |RUN| | | |XP| | | | | | | | ]
[ 0.342163] efi: memattr: 0x0000bfb9b000-0x0000bfb9efff [Runtime Code |RUN| | | |XP| | | | | | | | ]
[ 0.342682] efi: memattr: 0x0000bfb9f000-0x0000bfba1fff [Runtime Code |RUN| | | | | | |RO| | | | | ]
[ 0.343138] efi: memattr: 0x0000bfba2000-0x0000bfba4fff [Runtime Code |RUN| | | |XP| | | | | | | | ]
[ 0.343620] efi: memattr: 0x0000bfba5000-0x0000bfbaffff [Runtime Code |RUN| | | | | | |RO| | | | | ]
[ 0.344164] efi: memattr: 0x0000bfbb0000-0x0000bfbb2fff [Runtime Code |RUN| | | |XP| | | | | | | | ]
[ 0.344727] efi: memattr: 0x0000bfbb3000-0x0000bfbb5fff [Runtime Code |RUN| | | | | | |RO| | | | | ]
[ 0.345118] efi: memattr: 0x0000bfbb6000-0x0000bfbb8fff [Runtime Code |RUN| | | |XP| | | | | | | | ]
[ 0.346013] efi: memattr: 0x0000bfbb9000-0x0000bfbbbfff [Runtime Code |RUN| | | | | | |RO| | | | | ]
[ 0.346548] efi: memattr: 0x0000bfbbc000-0x0000bfbbefff [Runtime Code |RUN| | | |XP| | | | | | | | ]
[ 0.347122] efi: memattr: 0x0000bfbbf000-0x0000bfbc1fff [Runtime Code |RUN| | | | | | |RO| | | | | ]
[ 0.347626] efi: memattr: 0x0000bfbc2000-0x0000bfbc4fff [Runtime Code |RUN| | | |XP| | | | | | | | ]
[ 0.348138] efi: memattr: 0x0000bfbc5000-0x0000bfbc8fff [Runtime Code |RUN| | | | | | |RO| | | | | ]
[ 0.348660] efi: memattr: 0x0000bfbc9000-0x0000bfbcafff [Runtime Code |RUN| | | |XP| | | | | | | | ]
[ 0.349138] efi: memattr: 0x0000bfbcb000-0x0000bfbeefff [Runtime Data |RUN| | | |XP| | | | | | | | ]
[ 0.349724] efi: memattr: 0x0000bfef4000-0x0000bff77fff [Runtime Data |RUN| | | |XP| | | | | | | | ]
[ 0.350974] BUG: unable to handle page fault for address: 00000000a6403e90
[ 0.350974] #PF: supervisor read access in kernel mode
[ 0.350974] #PF: error_code(0x0000) - not-present page
[ 0.350974] PGD bd890063 P4D bd890063 PUD bd896063 PMD 0
[ 0.350974] Oops: 0000 [#1] SMP PTI
[ 0.350974] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.6.0-rc3+ #3
[ 0.350974] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 0.0.0 02/06/2015
[ 0.350974] RIP: 0008:0xbfba558d
[ 0.350974] Code: 53 52 e8 77 fd ff ff 8b 5d 08 85 db 75 1c 84 c0 74 18 50 68 71 d8 ba bf 68 ba 00 00 00 68 5c cd ba bf e8 09 ff ff ff 83 c4 10 <8b> 03 8b 53 04 8b 5d fc c9 c3 55 89 e5 57 56 53 83 ec 28 8b 5d 08
[ 0.350974] RSP: 0018:00000000bd8a0ed0 EFLAGS: 00000086
[ 0.350974] RAX: 00000000bfbcf001 RBX: 00000000a6403e90 RCX: 0000000000000001
[ 0.350974] RDX: 0000000011d293ca RSI: 00000000a600a370 RDI: 000000008be4df61
[ 0.350974] RBP: 00000000bd8a0ed8 R08: 0000000000000000 R09: 0000000000000000
[ 0.350974] R10: ffffffff92612840 R11: 0000000000000048 R12: ffffffff92600000
[ 0.350974] R13: 0000000000000000 R14: 00000000a600a370 R15: 0000000000000286
[ 0.350974] FS: 0000000000000000(0000) GS:ffff93c23e200000(0000) knlGS:0000000000000000
[ 0.350974] CS: 0008 DS: 0018 ES: 0018 CR0: 0000000080050033
[ 0.350974] CR2: 00000000a6403e90 CR3: 00000000bd8ca000 CR4: 00000000000406b0
[ 0.350974] Call Trace:
[ 0.350974] Modules linked in:
[ 0.350974] CR2: 00000000a6403e90
[ 0.350974] ---[ end trace 65970dab9fc6be95 ]---
[ 0.350974] RIP: 0008:0xbfba558d
[ 0.350974] Code: 53 52 e8 77 fd ff ff 8b 5d 08 85 db 75 1c 84 c0 74 18 50 68 71 d8 ba bf 68 ba 00 00 00 68 5c cd ba bf e8 09 ff ff ff 83 c4 10 <8b> 03 8b 53 04 8b 5d fc c9 c3 55 89 e5 57 56 53 83 ec 28 8b 5d 08
[ 0.350974] RSP: 0018:00000000bd8a0ed0 EFLAGS: 00000086
[ 0.350974] RAX: 00000000bfbcf001 RBX: 00000000a6403e90 RCX: 0000000000000001
[ 0.350974] RDX: 0000000011d293ca RSI: 00000000a600a370 RDI: 000000008be4df61
[ 0.350974] RBP: 00000000bd8a0ed8 R08: 0000000000000000 R09: 0000000000000000
[ 0.350974] R10: ffffffff92612840 R11: 0000000000000048 R12: ffffffff92600000
[ 0.350974] R13: 0000000000000000 R14: 00000000a600a370 R15: 0000000000000286
[ 0.350974] FS: 0000000000000000(0000) GS:ffff93c23e200000(0000) knlGS:0000000000000000
[ 0.350974] CS: 0008 DS: 0018 ES: 0018 CR0: 0000000080050033
[ 0.350974] CR2: 00000000a6403e90 CR3: 00000000bd8ca000 CR4: 00000000000406b0
[ 0.350974] Kernel panic - not syncing: Attempted to kill the idle task!
[ 0.350974] ---[ end Kernel panic - not syncing: Attempted to kill the idle task! ]---
