On a ThunderX2 node, after adding "earlycon debug" to cmdline, i was able to capture this:
...
Loading Linux 5.4.0-11-generic ...
Loading initial ramdisk ...
EFI stub: Booting Linux Kernel...
EFI stub: EFI_RNG_PROTOCOL unavailable, no randomness supplied
EFI stub: Using DTB from configuration table
EFI stub: Exiting boot services and installing virtual address map...
[ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x431f0af1]
[ 0.000000] Linux version 5.4.0-11-generic (buildd@bos02-arm64-077) (gcc
version 9.2.1 20200104 (Ubuntu 9.2.1-22ubuntu2)) #14-Ubuntu SMP Thu Jan 9 16
:16:25 UTC 2020 (Ubuntu 5.4.0-11.14-generic 5.4.8)
[ 0.000000] efi: Getting EFI parameters from FDT:
[ 0.000000] efi: EFI v2.70 by American Megatrends
[ 0.000000] efi: ESRT=0xfd38dc98 SMBIOS=0xfcca0000 SMBIOS 3.0=0xfcc90000
ACPI 2.0=0xf9a10000 MEMRESERVE=0xfa7f9e98
[ 0.000000] secureboot: Secure boot disabled
[ 0.000000] esrt: Reserving ESRT space from 0x00000000fd38dc98 to
0x00000000fd38dcd0.
[ 0.000000] cma: Reserved 32 MiB at 0x00000000f0000000
[ 0.000000] ACPI: Early table checksum verification disabled
[ 0.000000] ACPI: RSDP 0x00000000F9A10000 000024 (v02 ALASKA)
[ 0.000000] ACPI: XSDT 0x00000000F9A10028 0000DC (v01 ALASKA A M I
01072009 AMI 00010013)
[ 0.000000] ACPI: FACP 0x00000000F9A10108 000114 (v06 ALASKA A M I
01072009 AMI 00010013)
[ 0.000000] ACPI: DSDT 0x00000000F9A10220 000714 (v02 CAVM CN99XX
20150406 INTL 20170224)
[ 0.000000] ACPI: FIDT 0x00000000F9A10938 00009C (v01 ALASKA A M I
01072009 AMI 00010013)
[ 0.000000] ACPI: DBG2 0x00000000F9A109D8 000062 (v00 CAVM CN99XX
00000000 INTL 20170224)
[ 0.000000] ACPI: SPMI 0x00000000F9A10A40 000041 (v05 ALASKA A M I
00000000 AMI. 00000000)
[ 0.000000] ACPI: PCCT 0x00000000F9A10A88 000FB0 (v01 CAVM CN99XX
00000001 INTL 20170224)
[ 0.000000] ACPI: SLIT 0x00000000F9A11A38 000030 (v01 CAVM CN99XX
00000001 INTL 20170224)
[ 0.000000] ACPI: SPMI 0x00000000F9A11A68 000041 (v04 CAVM CN99XX
00000001 INTL 20170224)
[ 0.000000] ACPI: SSDT 0x00000000F9A11AB0 004217 (v02 CAVM N0BXPCI
20150406 INTL 20170224)
[ 0.000000] ACPI: SSDT 0x00000000F9A15CC8 019654 (v02 CAVM N0T128
20150406 INTL 20170224)
[ 0.000000] ACPI: SSDT 0x00000000F9A2F320 0041CB (v02 CAVM N1BXPCI
20150406 INTL 20170224)
[ 0.000000] ACPI: SSDT 0x00000000F9A334F0 01980C (v02 CAVM N1T128
20150406 INTL 20170224)
[ 0.000000] ACPI: BERT 0x00000000F9A4CD00 000030 (v01 CAVM CN99XX
20150406 CAVM 00000099)
[ 0.000000] ACPI: GTDT 0x00000000F9A4CD30 00007C (v02 CAVM CN99XX
20150406 CAVM 00000099)
[ 0.000000] ACPI: HEST 0x00000000F9A4CDB0 000308 (v01 CAVM CN99XX
20150406 CAVM 00000099)
[ 0.000000] ACPI: APIC 0x00000000F9A4D0B8 00468C (v04 CAVM CN99XX
20150406 CAVM 00000099)
[ 0.000000] ACPI: MCFG 0x00000000F9A51748 00003C (v01 CAVM CN99XX
20150406 CAVM 00000099)
[ 0.000000] ACPI: NFIT 0x00000000F9A51788 000028 (v01 CAVM CN99XX
20150406 CAVM 00000099)
[ 0.000000] ACPI: PPTT 0x00000000F9A517B0 0018B4 (v01 CAVM CN99XX
20150406 CAVM 00000099)
[ 0.000000] ACPI: SRAT 0x00000000F9A53068 0010A8 (v03 CAVM CN99XX
20150406 CAVM 00000099)
[ 0.000000] ACPI: IORT 0x00000000F9A54110 000688 (v00 CAVM CN99XX
20150406 CAVM 00000099)
[ 0.000000] ACPI: SPCR 0x00000000F9A54798 000050 (v02 A M I APTIO V
01072009 AMI. 0005000D)
[ 0.000000] ACPI: BGRT 0x00000000F9A547E8 000038 (v01 ALASKA A M I
01072009 AMI 00010013)
[ 0.000000] ACPI: WSMT 0x00000000F9A54820 000028 (v01 ALASKA A M I
01072009 AMI 00010013)
[ 0.000000] ACPI: SPCR: Unexpected SPCR Access Width. Defaulting to byte
size
[ 0.000000] ACPI: SPCR: console: pl011,mmio,0x402020000,115200
[ 0.000000] earlycon: pl11 at MMIO 0x0000000402020000 (options '115200')
[ 0.000000] printk: bootconsole [pl11] enabled
[ 0.000000] ACPI: SRAT: Node 0 PXM 0 [mem 0x80000000-0xfeffffff]
[ 0.000000] ACPI: SRAT: Node 0 PXM 0 [mem 0x880000000-0xfffffffff]
[ 0.000000] ACPI: SRAT: Node 0 PXM 0 [mem 0x8800000000-0x9ffcffffff]
[ 0.000000] ACPI: SRAT: Node 1 PXM 1 [mem 0x9ffd000000-0xbffcffffff]
[ 0.000000] NUMA: NODE_DATA [mem 0x9ffcffcf40-0x9ffcffffff]
[ 0.000000] NUMA: NODE_DATA [mem 0xbfdcf25f40-0xbfdcf28fff]
[ 0.000000] ------------[ cut here ]------------
[ 0.000000] kernel BUG at arch/arm64/kernel/traps.c:405!
[ 0.000000] Internal error: Oops - BUG: 0 [#1] SMP
[ 0.000000] Modules linked in:
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 5.4.0-11-generic
#14-Ubuntu
[ 0.000000] pstate: 00400089 (nzcv daIf +PAN -UAO)
[ 0.000000] pc : do_undefinstr+0x64/0x68
[ 0.000000] lr : do_undefinstr+0x38/0x68
[ 0.000000] sp : ffff800011ac3c00
[ 0.000000] x29: ffff800011ac3c00 x28: ffff800011ad2d80
[ 0.000000] x27: 00000000000002ff x26: fffffe0000dfffff
[ 0.000000] x25: 0060000000000711 x24: 0000000000000000
[ 0.000000] x23: 0000000080400089 x22: ffff800010d7a238
[ 0.000000] x21: 00000000820ec000 x20: 0000ffffffffffff
[ 0.000000] x19: ffff800011ac3c20 x18: 0000000000000010
[ 0.000000] x17: 0000000000001400 x16: 0000000000001c00
[ 0.000000] x15: ffff800011ad32a8 x14: 000000000000f0c0
[ 0.000000] x13: 0000009ffcff0f40 x12: 000000bf34c00000
[ 0.000000] x11: 0000004000000000 x10: 0000004000000000
[ 0.000000] x9 : 0000000000000269 x8 : 00000000200dc0c0
[ 0.000000] x7 : 000000bfdcf23f40 x6 : ffff800011ac3bf8
[ 0.000000] x5 : 0000000000000000 x4 : ffff800011ced100
[ 0.000000] x3 : ffff800011ad5990 x2 : 0000000000000000
[ 0.000000] x1 : 0000000000000000 x0 : 0000000080400089
[ 0.000000] Call trace:
[ 0.000000] do_undefinstr+0x64/0x68
[ 0.000000] el1_undef+0x10/0xb4
[ 0.000000] e843419@01f2_00002fa5_530+0x0/0xff8
[ 0.000000] vmemmap_populate+0x70/0x15c
[ 0.000000] __populate_section_memmap+0x38/0x60
[ 0.000000] sparse_init_nid+0x198/0x290
[ 0.000000] sparse_init+0x10c/0x158
[ 0.000000] bootmem_init+0x70/0xe4
[ 0.000000] setup_arch+0x2e0/0x69c
[ 0.000000] start_kernel+0x84/0x504
[ 0.000000] Code: 940046ff f9400bf3 a8c27bfd d65f03c0 (d4210000)
[ 0.000000] random: get_random_bytes called from
print_oops_end_marker+0x30/0x58 with crng_init=0
[ 0.000000] ---[ end trace 0000000000000000 ]---
[ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
[ 0.000000] ---[ end Kernel panic - not syncing: Attempted to kill the idle
task! ]---
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https://bugs.launchpad.net/bugs/1860144
Title:
linux 5.4.0-11 fails to boot on arm64
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