You can only log in to the affected system after you have accessed the
IBM network, i.e. when you are inside the firewall. VPN access can be
granted (I believe) to whoever is assignde to fix this bug.

** Attachment added: "How to log in to the affected system"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1952185/+attachment/5545944/+files/howto-embedded-arm-3.tar.z

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https://bugs.launchpad.net/bugs/1952185

Title:
  Embedded ARM64 crash trying to zero-fill an 8GB ramdisk

Status in linux package in Ubuntu:
  Invalid

Bug description:
  ---Problem Description---
  Kernel crash when setting up ramdisk on embedded ARM
   
  Contact Information = Chris Ward t...@uk.ibm.com   Mohit Kapur 
moh...@us.ibm.com 
   
  ---Additional Hardware Info---
  Embedded ARM with FPGA 

   
  ---uname output---
  Linux cuttlefisharm1 5.4.0-xilinx-v2020.2 #1 SMP Thu Nov 18 18:44:45 UTC 2021 
aarch64 aarch64 aarch64 GNU/Linux
   
  Machine Type = IBM Research internal processor based on xilinx 
   
  ---System Hang---
   Unresponsive. Power cycle reclaims
   
  ---Debugger---
  A debugger is not configured
   
  ---Steps to Reproduce---
   Boot the system. Try dd if=/dev/zero of=/dev/ram0 bs=... count=...
   
  A small ramdisk works and gives the expected error when trying to write 8G of 
data into an 8M ramdisk.
  tjcw@cuttlefisharm1:~$ sudo dd if=/dev/zero of=/dev/ram0 bs=4096 count=1048576
  [sudo] password for tjcw: 
  dd: error writing '/dev/ram0': No space left on device
  2049+0 records in
  2048+0 records out
  8388608 bytes (8.4 MB, 8.0 MiB) copied, 0.0531788 s, 158 MB/s
  tjcw@cuttlefisharm1:~$ 

  A 2GB ramdisk works, a 4GB ramdisk causes a crash

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