Comment 0 for bug 1879214

OS: Ubuntu 20.04 LTS
kernel: 5.4.0-21-generic
arch:arm64
Description:
When testing kdump on Ubuntu 20.04 LTS (arm64), makedumpfile fails. The test steps are as follows:
# echo 1> / proc / sys / kernel / sysrq
# echo c> / proc / sysrq-trigger
The error logs are as follows:
[ 26.599161] kdump-tools[653]: Starting kdump-tools:
[ 26.612761] kdump-tools[659]: Starting kdump-tools:
[ 26.628565] kdump-tools[659]: * running makedumpfile -c -d 31 /proc/vmcore /var/crash/2020050
[ 26.648621] kdump-tools[676]: * running makedumpfile -c -d 31 /proc/vmcore /var/crash/2020050
[ 26.668445] kdump-tools[676]: calculate_plat_config: PAGE SIZE 0x1000 and VA Bits 47 not supported
[ 26.678199] kdump-tools[676]: get_machdep_info_arm64
[ 26.692518] kdump-tools[659]: get_machdep_info_arm64
[ 26.852221] hns3 0000:7d:00.0: get link status cmd failed -16

[ 94.351303] kdump-tools[659]: * kdump-tools: makedumpfile failed, * kdump-tools: saved vmcore in /var/crash/202005061048
[ 94.435510] kdump-tools[659]: * running makedumpfile --dump-dmesg /proc/vmcore /var/crash/202005061048/dmesg.202005061048
[ 94.457103] kdump-tools[688]: calculate_plat_config: PAGE SIZE 0x1000 and VA Bits 47 not supported
[ 94.476228] kdump-tools[688]: get_machdep_info_arm64: Can't determine platform config values
[ 94.485912] kdump-tools[688]: makedumpfile Failed.
[ 94.500760] kdump-tools[659]: * kdump-tools: makedumpfile --dump-dmesg failed. dmesg content will be unavailable
[ 94.520225] kdump-tools[659]: * kdump-tools: failed to save dmesg content in /var/crash/202005061048
[ 94.544205] kdump-tools[691]: Wed, 06 May 2020 10:49:42 -0400
[ 94.564597] kdump-tools[692]: Rebooting.
[ 94.678709] reboot: Restarting systemlpc uart init Done