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

[bugproxy]

---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 <email address hidden> - 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

[bugproxy (bugproxy)]

Default Comment by Bridge

[Steve Langasek (vorlon)]

this is a kernel crash; unassigning the Foundations Team.

[Joseph Salisbury (jsalisbury)]

Did this issue start with the 4.15.0-22 kernel? Was there a prior 4.15 based kernel that did not exhibit this bug?

Could you also see if this bug happens with the Bionic -proposed or mainline kernel:

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed.

Mainline can be downloaded from:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17-rc7/

[Breno Leitão (breno-leitao)]

I think this is a clone of https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1773162. Can someone please test with the following kernel?

http://kernel.ubuntu.com/~jsalisbury/lp1773162

[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2018-05-30 01:55 EDT-------
(In reply to comment #8)
> Did this issue start with the 4.15.0-22 kernel? Was there a prior 4.15
> based kernel that did not exhibit this bug?
>
> Could you also see if this bug happens with the Bionic -proposed or mainline
> kernel:
>
> See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
> enable and use -proposed.
>
> Mainline can be downloaded from:
> http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17-rc7/

Tested with given kernels below is the summary.

4.15.0-20-generic -> System boots
4.15.0-22-generic -> System fails to boots with oops
4.15.0-23-generic -> System fails to boots with oops
4.15.0-23-generic #26~lp1773162 -> System boots

Thanks,
Pavithra

[Dmitriy (damageinboxru)]

That's may be interesting to this ticket.

If one use Ubuntu LIVECD which has linux kernel version 4.15.0-20.21-generic 4.15.17, than the current issue boot errors doesn't appear in console log and operating system boots fine.

[Dmitriy (damageinboxru)]

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.).

[Joseph Salisbury (jsalisbury)]

Per testing performed in comment #5, this appears to be a duplicate of bug 1773162.

[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2018-06-13 21:19 EDT-------
Pavithra: can you please validate and close this bug if below test kernel works, posted by Canonical.

>>>>>>>>>>>>>
Joseph Salisbury (jsalisbury) wrote on 2018-05-24: #24

I built a test kernel with a revert of 06f7e3d39 and a new backport of a048a07d7f4. The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1773162

Can you test this kernel and see if it resolves this bug?

Note about installing test kernels:
? If the test kernel is prior to 4.15(Bionic) you need to install the linux-image and linux-image-extra .deb packages.
? If the test kernel is 4.15(Bionic) or newer, you need to install the linux-modules, linux-modules-extra and linux-image-unsigned .deb packages.

Thanks in advance!
>>>>>>>>>>>>>

[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2018-07-04 19:32 EDT-------
Please pass below boot parameter while you install 18.04 from proposed repo.

"apt-setup/proposed=true"

[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2018-07-27 06:26 EDT-------
Issue is resolved with latest -29 kernel.

Thanks,
Pavithra