[Bug 1997247] Re: Got Segmentation fault when enable zipl -V on the guest.

Tue Nov 22 11:39:33 UTC 2022

Yeah, updated to 2.20.0-0ubuntu3.2. It works fine now.
Thank you very much, Frank.

add-apt-repository deb
https://ppa.launchpadcontent.net/fheimes/lp1974109+lp1959987+lp1990520+lp1990524+lp1996069+lp1996477/ubuntu
jammy main

root at a257ubtu20seon04:/etc# apt upgrade -y
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
.....
Preparing to unpack .../s390-tools_2.20.0-0ubuntu3.2_s390x.deb ...
Unpacking s390-tools (2.20.0-0ubuntu3.2) over (2.20.0-0ubuntu3.1) ...
Preparing to unpack .../s390-tools-signed_2.20.0-0ubuntu3.2_s390x.deb ...
Unpacking s390-tools-signed (2.20.0-0ubuntu3.2) over (2.20.0-0ubuntu3.1) ...
Setting up s390-tools-signed (2.20.0-0ubuntu3.2) ...
Setting up s390-tools (2.20.0-0ubuntu3.2) ...
Processing triggers for man-db (2.10.2-1) ...
Processing triggers for initramfs-tools (0.140ubuntu13) ...
update-initramfs: Generating /boot/initrd.img-5.15.0-53-generic
Using config file '/etc/zipl.conf'
Building bootmap in '/boot'

root at a257ubtu20seon04:~# zipl -V
Looking for components in '/lib/s390-tools'
Using config file '/etc/zipl.conf'
Target device information
  Device..........................: fc:00
  Partition.......................: fc:01
  Device name.....................: vda
  Device driver name..............: virtblk
  Type............................: disk partition
  Disk layout.....................: SCSI disk layout
  Geometry - start................: 2048
  File system block size..........: 4096
  Physical block size.............: 512
  Device size in physical blocks..: 41938944
Building bootmap in '/boot'
Building menu 'menu'
Adding #1: IPL section 'ubuntu'
  initial ramdisk...: /boot/initrd.img
  kernel image......: /boot/vmlinuz
  kernel parmline...: 'root=/dev/disk/by-path/ccw-0.0.0000-part1'
  component address:
    heap area.......: 0x00002000-0x00005fff
    stack area......: 0x0000f000-0x0000ffff
    internal loader.: 0x0000a000-0x0000dfff
    parameters......: 0x00009000-0x000091ff
    kernel image....: 0x00010000-0x007c4fff
    parmline........: 0x007c6000-0x007c61ff
    initial ramdisk.: 0x007e0000-0x02147fff
    environment blk.: 0x007d6000-0x007d6fff
Adding #3: IPL section 'secure' (default)
  kernel image......: /boot/secure-linux
  component address:
    heap area.......: 0x00002000-0x00005fff
    stack area......: 0x0000f000-0x0000ffff
    internal loader.: 0x0000a000-0x0000dfff
    parameters......: 0x00009000-0x000091ff
    kernel image....: 0x00010000-0x02145fff
    environment blk.: 0x02156000-0x02156fff
Environment block content:
Preparing boot device: vda (0000).
Detected SCSI PCBIOS disk layout.
Writing SCSI master boot record.
Syncing disks...
Done.
root at a257ubtu20seon04:~#

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https://bugs.launchpad.net/bugs/1997247

Title:
  Got Segmentation fault when enable zipl -V on the guest.

Status in Ubuntu on IBM z Systems:
  New
Status in s390-tools package in Ubuntu:
  New

Bug description:
  I am test ubuntu secure execution on Ubuntu22.04 s390x on DPM mode.

  Host secure execution enablement is OK.

  root at a257seubut:/home/ubuntu# cat /proc/cmdline
  root=/dev/disk/by-id/dm-uuid-part1-mpath-20017380030bb1668 prot_virt=1
  root at a257seubut:/home/ubuntu# dmesg | grep ultravisor
  [    0.119067] prot_virt: Reserving 130MB as ultravisor base storage
  root at a257seubut:/home/ubuntu# 

  And I have create some Ubuntu guest on it.
  But when I enable guest execution, I got this Segmentation fault error.

  ubuntu at a257ubtu20seon04:~$ cat parmfile 
  root=/dev/disk/by-path/ccw-0.0.0000-part1 swiotlb=262144

  ubuntu at a257ubtu20seon04:~$ cat /etc/zipl.conf
  [defaultboot]
  defaultmenu = menu

  :menu
  target = /boot
  1 = ubuntu
  3 = secure
  default = 3
  prompt = 1
  timeout = 10
  [secure]
  target = /boot
  image = /boot/secure-linux
  [ubuntu]
  target = /boot
  image = /boot/vmlinuz
  ramdisk = /boot/initrd.img
  parameters = root=/dev/disk/by-path/ccw-0.0.0000-part1

  ubuntu at a257ubtu20seon04:~$ sudo genprotimg -i /boot/vmlinuz -r /boot/initrd.img -p parmfile -k HKD-3932-02860A8.crt --no-verify -o /boot/secure-linux -V
  WARNING: host-key document verification is disabled. Your workload is not secured.
        kernel:	0x000000015000 (     8085504 /      8081976 Bytes)
      parmline:	0x0000007cb000 (        4096 /           57 Bytes)
       ramdisk:	0x0000007cc000 (    26640384 /     26639555 Bytes)
       stage3b:	0x000002134000 (        8192 /         5716 Bytes)
       stage3a:	0x000000010000 (       20480 /        20480 Bytes)

  ubuntu at a257ubtu20seon04:~$ sudo zipl -V
  Looking for components in '/lib/s390-tools'
  Using config file '/etc/zipl.conf'
  [ 1326.923001] User process fault: interruption code 0010 ilc:3 in zipl[1000000+26000]
  [ 1326.923012] Failing address: 0000000000000000 TEID: 0000000000000800
  [ 1326.923014] Fault in primary space mode while using user ASCE.
  [ 1326.923017] AS:0000000085de01c7 R3:0000000085260007 S:0000000000000020 
  Segmentation fault
  ubuntu at a257ubtu20seon04:~$ 

  ubuntu at a257seubut:~$ cat /etc/os-release 
  PRETTY_NAME="Ubuntu 22.04.1 LTS"
  NAME="Ubuntu"
  VERSION_ID="22.04"
  VERSION="22.04.1 LTS (Jammy Jellyfish)"
  VERSION_CODENAME=jammy
  ID=ubuntu
  ID_LIKE=debian
  HOME_URL="https://www.ubuntu.com/"
  SUPPORT_URL="https://help.ubuntu.com/"
  BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
  PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
  UBUNTU_CODENAME=jammy
  ubuntu at a257seubut:~$ 

  Could you help to take a look for this? If you need more info, please
  let me know.

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