[Bug 1773973] Re: Ubuntu 18.04 [ Garrison P8 ]: Machine crashes with oops while booting with 4.15.0-22-generic kernel.

[Dmitriy]

Short comparison -

Ubuntu 18.04 LTS LIVECD - kernel version Ubuntu 4.15.0-20.21-generic
4.15.17 - boots fine, without current issue errors

Ubuntu 18.04 LTS NetInstall - kernel version Ubuntu 4.15.0-22.24-generic
4.15.17 - has errors in console log like metioned above in this issue
("Bad kernel stack pointer", stack_trace with fast_exception_return,
etc.).

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Title:
  Ubuntu 18.04 [ Garrison P8 ]: Machine crashes with oops while booting
  with 4.15.0-22-generic kernel.

Status in The Ubuntu-power-systems project:
  New
Status in debian-installer package in Ubuntu:
  New
Status in linux package in Ubuntu:
  Incomplete
Status in debian-installer source package in Bionic:
  New
Status in linux source package in Bionic:
  Incomplete

Bug description:
  ---Problem Description---

  Ubuntu 18.04 [ Garrison P8 ]: Machine crashes with oops while booting
  with 4.15.0-22-generic kernel.

  ---Environment--
  Kernel Build:   4.15.0-22-generic
  System Name :  ltc-garri1
  Model/Type  :  P8
  Platform    :  BML

  ---Uname output---

  Unable to boot.

  ---Steps to reproduce--

  1. Install Ubuntu 18.04 on Garison BML from http://ports.ubuntu.com
  /ubuntu-ports/dists/bionic/main/installer-
  ppc64el/current/images/netboot/ubuntu-installer/ppc64el/ and try to
  boot.

  ---Logs----

  Attaching console lob.

  [    4.578205] Bad kernel stack pointer 7ffffb0dd870 at c00000000000b9ec
  [    4.578244] Oops: Bad kernel stack pointer, sig: 6 [#11]
  [    4.578271] LE SMP NR_CPUS=2048 NUMA PowerNV
  [    4.578301] Modules linked in:
  [    4.578324] CPU: 27 PID: 1225 Comm: modprobe Tainted: G      D          4.15.0-22-generic #24-Ubuntu
  [    4.578371] NIP:  c00000000000b9ec LR: 0000000000000000 CTR: 0000000000000000
  [    4.578413] REGS: c00000003febbd40 TRAP: 0300   Tainted: G      D           (4.15.0-22-generic)
  [    4.578460] MSR:  9000000000001031 <SF,HV,ME,IR,DR,LE>  CR: 00000000  XER: 00000000
  [    4.578504] CFAR: c00000000000b934 DAR: 000000000002b200 DSISR: 40000000 SOFTE: -4611686018403131680 
  [    4.578504] GPR00: 0000000000000000 00007ffffb0dd870 0000000000000000 0000000000000000 
  [    4.578504] GPR04: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 
  [    4.578504] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 
  [    4.578504] GPR12: 000075dcd8781700 000000000002b200 0000000000000000 0000000000000000 
  [    4.578504] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 
  [    4.578504] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 
  [    4.578504] GPR24: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 
  [    4.578504] GPR28: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 
  [    4.615667] NIP [c00000000000b9ec] fast_exception_return+0x9c/0x184
  [    4.616210] LR [0000000000000000]           (null)
  [    4.616237] Call Trace:
  [    4.616768] Instruction dump:
  [    4.616789] e84101a0 7c4ff120 e8410170 7c5a03a6 e8010070 e8410080 e8610088 e8810090 
  [    4.617697] e8210078 7db243a6 7db142a6 7c0004ac <e9ad0000> 63ff0000 7db242a6 63ff0000 
  [    4.618195] ---[ end trace a0d70ba94f583cca ]---
  [    4.675899] usb 1-3.3: new high-speed USB device number 5 using xhci_hcd
  [    4.782923] 
  [    4.783061] Key type encrypted registered
  [    4.783087] AppArmor: AppArmor sha1 policy hashing enabled
  [    4.783117] ima: No TPM chip found, activating TPM-bypass! (rc=-19)
  [    4.783181] evm: HMAC attrs: 0x1
  [    4.806062] rtc-opal opal-rtc: setting system clock to 2018-05-29 07:49:29 UTC (1527580169)
  [    4.806350] integrity: Unable to open file: /etc/keys/x509_ima.der (-2)
  [    4.806353] integrity: Unable to open file: /etc/keys/x509_evm.der (-2)
  [    4.807260] Freeing unused kernel memory: 4800K
  [    4.807321] This architecture does not have kernel memory protection.

  
  == Comment: #2 - SEETEENA THOUFEEK <sthoufee at in.ibm.com> - 2018-05-29 06:47:06 ==
  Symptoms looks exactly like 
  .
  https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1691978
  .
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1656908

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