** Tags added: originate-from-1998320 somerville

You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to initramfs-tools in Ubuntu.

  Can't boot: "error: out of memory." immediately after the grub menu

Status in grub:
Status in OEM Priority Project:
Status in grub2-signed package in Ubuntu:
Status in grub2-unsigned package in Ubuntu:
Status in initramfs-tools package in Ubuntu:
  Won't Fix
Status in linux package in Ubuntu:

Bug description:

  Some workarounds have been suggested in


   * In some cases, if the users’ initramfs grow bigger, then it’ll
  likely not be able to be loaded by grub2.

   * Some real cases from OEM projects:

  In many built-in 4k monitor laptops with nvidia drivers, the u-d-c
  puts the nvidia*.ko to initramfs which grows the initramfs to ~120M.
  Also the gfxpayload=auto will remain to use 4K resolution since it’s
  what EFI POST passed.

  In this case, the grub isn't able to load initramfs because the
  grub_memalign() won't be able to get suitable memory for the larger

  #0 grub_memalign (align=1, size=592214020) at ../../../grub-core/kern/mm.c:376
  #1 0x000000007dd7b074 in grub_malloc (size=592214020) at 
  #2 0x000000007dd7a2c8 in grub_verifiers_open (io=0x7bc02d80, type=131076)
      at ../../../grub-core/kern/verifiers.c:150
  #3 0x000000007dd801d4 in grub_file_open (name=0x7bc02f00 
      type=131076) at ../../../grub-core/kern/file.c:121
  #4 0x000000007bcd5a30 in ?? ()
  #5 0x000000007fe21247 in ?? ()
  #6 0x000000007bc030c8 in ?? ()
  #7 0x000000017fe21238 in ?? ()
  #8 0x000000007bcd5320 in ?? ()
  #9 0x000000007fe21250 in ?? ()
  #10 0x0000000000000000 in ?? ()

  Based on grub_mm_dump, we can see the memory fragment (some parts seem
  likely be used because of 4K resolution?) and doesn’t have available
  contiguous memory for larger file as:

  if (cur->size >= n + extra)

  Based on UEFI Specification Section 7.2[1] and UEFI driver writers’
  guide 4.2.3[2], we can ask 32bits+ on AllocatePages().

  As most X86_64 platforms should support 64 bits addressing, we should
  extend GRUB_EFI_MAX_USABLE_ADDRESS to 64 bits to get more available

   * When users grown the initramfs, then probably will get initramfs
  not found which really annoyed and impact the user experience (system
  not able to boot).

  [Test Plan]

   * detailed instructions how to reproduce the bug:

  1. Any method to grow the initramfs, such as install nvidia-driver.

  2. If developers would like to reproduce, then could dd if=/dev/random
  of=... bs=1M count=500, something like:

  $ cat /usr/share/initramfs-tools/hooks/zzz-touch-a-file


          echo "$PREREQ"

  case $1 in
  # get pre-requisites
          exit 0

  . /usr/share/initramfs-tools/hook-functions
  dd if=/dev/random of=${DESTDIR}/test-500M bs=1M count=500

  And then update-initramfs

   * After applying my patches, the issue is gone.

   * I did also test my test grubx64.efi in:

  1. X86_64 qemu with
  1.1. 60M initramfs + 5.15.0-37-generic kernel
  1.2. 565M initramfs + 5.17.0-1011-oem kernel

  2. Amd64 HP mobile workstation with
  2.1. 65M initramfs + 5.15.0-39-generic kernel
  2.2. 771M initramfs + 5.17.0-1011-oem kernel

  All working well.

  [Where problems could occur]

  * The changes almost in i386/efi, thus the impact will be in the i386 / 
x86_64 EFI system.
  The other change is to modify the “grub-core/kern/efi/mm.c” but I use the 
original addressing for “arm/arm64/ia64/riscv32/riscv64”.
  Thus it should not impact them.

  * There is a “#if defined(__x86_64__)” which intent to limit the >
  32bits code in i386 system and also

   #if defined (__code_model_large__)
  -#define GRUB_EFI_MAX_USABLE_ADDRESS 0xffffffff
   #define GRUB_EFI_MAX_USABLE_ADDRESS 0x7fffffff

  If everything works as expected, then i386 should working good.

  If not lucky, based on “UEFI writers’ guide”[2], the i386 will get >
  4GB memory region and never be able to access.

  [Other Info]

   * Upstream grub2 bug #61058

   * Test PPA: https://launchpad.net/~os369510/+archive/ubuntu/lp1842320

   * Test grubx64.efi:

   * Test source code: https://github.com/os369510/grub2/tree/lp1842320

   * If you built the package, then test grubx64.efi is under
  “obj/monolithic/grub-efi-amd64/grubx64.efi”, in my case:

   * My build command: `sudo PBSHELL=1 pbuilder build --hookdir ~/hook-
  dir ubuntu-grub/grub2_2.06-2ubuntu7+jeremydev2.dsc 2>&1 | tee

   * My qemu command: `qemu-system-x86_64 -bios
  edk2/Build/OvmfX64/DEBUG_GCC5/FV/OVMF.fd -hda Templates/grub.qcow2 -m
  6G -vga cirrus -smp 8 -machine type=q35,accel=kvm -cpu host -enable-
  kvm -boot menu=on` (I built an edk2 binary with debugging log)

   * You can use my grubx64.efi with debug symbols from
  with-debug-symbols and source code is from
  https://github.com/os369510/grub2/tree/jeremy-dev .

  After built the package from source code, then you can use gdb to
  attach the qemu session as:

  ubuntu@ubuntu-HP-ZBook-Fury-16-G9-Mobile-Workstation-PC [ 
  $ gdb -x gdb_grub # with “add-symbol-file kernel.img ${address}

  The address above can read from qemu serial port and found the last
  “Loading driver at 0x000xxxxxxxxxx EntryPoint=0x000xxxxxxxabc”

  In above case, fill “0x000xxxxxxxabc” to ${address}.



  Upgraded from 19.04 to current 19.10 using "do-release-upgrade -d".
  Can still boot using the previous 5.0.0-25-generic kernel, but the
  5.2.0-15-generic fails to start.

  On selecting Ubuntu from Grub, the message "error: out of memory." is
  immediately shown. Pressing a key attempts to start boot-up but fails
  to mount root fs.

  Machine is HP Spectre X360 with 8GB RAM. Under kernel 5.0.0, free
  shows the following (run from Gnome terminal):

                total        used        free      shared  buff/cache   
  Mem:        7906564     1761196     3833240     1020216     2312128     
  Swap:       1003516           0     1003516

  Kernel packages installed:

  linux-generic                     amd64
  linux-headers-5.2.0-15                     5.2.0-15.16 all
  linux-headers-5.2.0-15-generic             5.2.0-15.16 amd64
  linux-headers-generic             amd64
  linux-image-5.0.0-25-generic               5.0.0-25.26 amd64
  linux-image-5.2.0-15-generic               5.2.0-15.16+signed1 amd64
  linux-image-generic               amd64
  linux-modules-5.0.0-25-generic             5.0.0-25.26 amd64
  linux-modules-5.2.0-15-generic             5.2.0-15.16 amd64
  linux-modules-extra-5.0.0-25-generic       5.0.0-25.26 amd64
  linux-modules-extra-5.2.0-15-generic       5.2.0-15.16 amd64

  Photo of kernel panic attached.

  NVMe drive partition layout (GPT):

  Device           Start        End   Sectors   Size Type
  /dev/nvme0n1p1    2048    1050623   1048576   512M EFI System
  /dev/nvme0n1p2 1050624    2549759   1499136   732M Linux filesystem
  /dev/nvme0n1p3 2549760 1000214527 997664768 475.7G Linux filesystem

  $ sudo pvs
    PV                          VG        Fmt  Attr PSize    PFree
    /dev/mapper/nvme0n1p3_crypt ubuntu-vg lvm2 a--  <475.71g    0

  $ sudo lvs
    LV     VG        Attr       LSize   Pool Origin Data%  Meta%  Move Log 
Cpy%Sync Convert
    root   ubuntu-vg -wi-ao---- 474.75g
    swap_1 ubuntu-vg -wi-ao---- 980.00m

  Partition 3 is LUKS encrypted. Root LV is ext4.
  ProblemType: Bug
  ApportVersion: 2.20.11-0ubuntu7
  Architecture: amd64
   /dev/snd/controlC0:  gmckeown   1647 F.... pulseaudio
  CurrentDesktop: ubuntu:GNOMEDistroRelease: Ubuntu 19.10
  InstallationDate: Installed on 2019-08-15 (18 days ago)
  InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 003: ID 8087:0a2b Intel Corp.
   Bus 001 Device 002: ID 04f2:b593 Chicony Electronics Co., Ltd HP Wide Vision 
FHD Camera
   Bus 001 Device 004: ID 046d:c52b Logitech, Inc. Unifying Receiver
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: HP HP Spectre x360 Convertible 13-ae0xx
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.0.0-25-generic 
root=/dev/mapper/ubuntu--vg-root ro quiet splash
  ProcVersionSignature: Ubuntu 5.0.0-25.26-generic 5.0.18
   linux-restricted-modules-5.0.0-25-generic N/A
   linux-backports-modules-5.0.0-25-generic  N/A
   linux-firmware                            1.181
  Tags:  eoan
  Uname: Linux 5.0.0-25-generic x86_64
  UpgradeStatus: Upgraded to eoan on 2019-09-02 (0 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 05/17/2019
  dmi.bios.vendor: AMI
  dmi.bios.version: F.25
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 83B9
  dmi.board.vendor: HP
  dmi.board.version: 56.43
  dmi.chassis.type: 31
  dmi.chassis.vendor: HP
  dmi.chassis.version: Chassis Version
  dmi.product.family: 103C_5335KV HP Spectre
  dmi.product.name: HP Spectre x360 Convertible 13-ae0xx
  dmi.product.sku: 2QH38EA#ABU
  dmi.sys.vendor: HP

To manage notifications about this bug go to:

Mailing list: https://launchpad.net/~touch-packages
Post to     : touch-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~touch-packages
More help   : https://help.launchpad.net/ListHelp

Reply via email to