The Ubuntu-power-systems project

Ubuntu18.04[P9, Boston]: while booting system with disable_radix as kernel boot parameter continuous cpu warn on seen in console

Bug #1747563 reported by bugproxy on 2018-02-06

This bug affects 1 person

	Status	Importance	Assigned to
The Ubuntu-power-systems project	Fix Released	High	Canonical Kernel Team
linux (Ubuntu)	Fix Released	High	Joseph Salisbury
Bionic	Fix Released	High	Joseph Salisbury

Bug Description

== Comment: #0 - Praveen K. Pandey <email address hidden> - 2018-01-16 02:38:52 ==
Problem Description :

while booting Power9 Boston as ubuntu18.04 system with disable_radix as kernel boot parameter continuous cpu warn on seen in console

Steps to reproduce:
1- install P9 system with ubuntu 18.04
2- boot system with disable_radix as kernel boot parameter

LOG:

0
[ 47.953357] [c000000febc3be30] [c00000000000b4e8] ret_from_kernel_thread+0x5c/0x74
[ 47.953358] Instruction dump:
[ 47.953358] eae30000 4191fad0 7ed3b378 e9210030 7efbbb78 7c791b78 3b400000 e9530000
[ 47.953360] 7d3f4850 7f7b5214 7fa9d840 409cfbc4 <0fe00000> 3ae00000 4bfffcd4 7c0004ac
[ 47.953363] ---[ end trace 69b8c2ab7570cdbf ]---
[ 47.953561] ------------[ cut here ]------------
[ 47.953562] WARNING: CPU: 23 PID: 995 at /build/linux-268tGw/linux-4.13.0/mm/vmalloc.c:2521 pcpu_get_vm_areas+0x62c/0x660
[ 47.953563] Modules linked in: hid_generic crc32c_vpmsum ast i2c_algo_bit ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm usbhid hid aac
raid i40e(+)
[ 47.953567] CPU: 23 PID: 995 Comm: kworker/23:1 Tainted: G W 4.13.0-25-generic #29-Ubuntu
[ 47.953569] Workqueue: events pcpu_balance_workfn
[ 47.953570] task: c000000febb97000 task.stack: c000000febc38000
[ 47.953570] NIP: c00000000032fedc LR: c0000000002f9c54 CTR: 0000000000000000
[ 47.953571] REGS: c000000febc3b800 TRAP: 0700 Tainted: G W (4.13.0-25-generic)
[ 47.953571] MSR: 9000000002029033 <SF,HV,VEC,EE,ME,IR,DR,RI,LE>
[ 47.953574] CR: 24024828 XER: 20040000
[ 47.953574] CFAR: c00000000032fa98 SOFTE: 1
[ 47.953574] GPR00: 0000200001e00000 c000000febc3ba80 c0000000015f6200 c000200fff6da480
[ 47.953574] GPR04: c000200fff356c08 0000000000000008 c000200fff6da488 0000000000000000
[ 47.953574] GPR08: 0000200001e00000 0000080000000000 0000000001400000 c000200fff6da488
[ 47.953574] GPR12: 0000000000000002 c00000000facf180 c000000000f7dbe0 c000000febc3bbb0
[ 47.953574] GPR16: 0000000000100000 0000000000000000 c0000000018adff8 c000200fff356c08
[ 47.953574] GPR20: 0000200003200000 c000200fff356bf8 c000200fff356c00 0000000000000000
[ 47.953574] GPR24: 0000000000000000 c000200fff6da488 0000000000000001 0000200003200000
[ 47.953574] GPR28: 0000000000000002 00000000000fffff d000080000000000 d000000000000000
[

[ 47.960515] GPR00: 0000200001e00000 c000000febc5ba80 c0000000015f6200 c000200fff6da480
[ 47.960515] GPR04: c000200fff356c08 0000000000000008 c000200fff6da488 0000000000000000
[ 47.960515] GPR08: 0000200001e00000 0000080000000000 0000000001400000 c000200fff6da488
[ 47.960515] GPR12: 0000000000000002 c00000000facdc80 c000000000f7dbe0 c000000febc5bbb0
[ 47.960515] GPR16: 0000000000100000 0000000000000000 c0000000018adff8 c000200fff356c08
[ 47.960515] GPR20: 0000200003200000 c000200fff356bf8 c000200fff356c00 0000000000000000
[ 47.960515] GPR24: 0000000000000000 c000200fff6da488 0000000000000001 0000200003200000
[ 47.960515] GPR28: 0000000000000002 00000000000fffff d000080000000000 d000000000000000
[ 47.960527] NIP [c00000000032fedc] pcpu_get_vm_areas+0x62c/0x660
[ 47.960528] LR [c0000000002f9c54] pcpu_create_chunk+0xb4/0x1b0
[ 47.960528] Call Trace:
[ 47.960529] [c000000febc5ba80] [c000000febc5bac0] 0xc000000febc5bac0 (unreliable)
[ 47.960531] [c000000febc5bb50] [c0000000002f9c54] pcpu_create_chunk+0xb4/0x1b0
[ 47.960532] [c000000febc5bb90] [c0000000002fb510] pcpu_balance_workfn+0x600/0x960
[ 47.960534] [c000000febc5bc90] [c000000000124018] process_one_work+0x298/0x5a0
[ 47.960536] [c000000febc5bd20] [c0000000001243a8] worker_thread+0x88/0x620
[ 47.960537] [c000000febc5bdc0] [c00000000012d21c] kthread+0x1ac/0x1c0
[ 47.960539] [c000000febc5be30] [c00000000000b4e8] ret_from_kernel_thread+0x5c/0x74
[ 47.960539] Instruction dump:
[ 47.960540] eae30000 4191fad0 7ed3b378 e9210030 7efbbb78 7c791b78 3b400000 e9530000
[ 47.960542] 7d3f4850 7f7b5214 7fa9d840 409cfbc4 <0fe00000> 3ae00000 4bfffcd4 7c0004ac
[ 47.960545] ---[ end trace 69b8c2ab7570ce02 ]---
[ 47.960554] ------------[ cut here ]------------
[ 47.960556] WARNING: CPU: 21 PID: 994 at /build/linux-268tGw/linux-4.13.0/mm/vmalloc.c:2521 pcpu_get_vm_areas+0x62c/0x660
[ 47.960556] Modules linked in: hid_generic crc32c_vpmsum ast i2c_algo_bit ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm usbhid hid aacraid i40e(+)
[ 47.960561] CPU: 21 PID: 994 Comm: kworker/21:1 Tainted: G W 4.13.0-25-generic #29-Ubuntu
[ 47.960562] Workqueue: events pcpu_balance_workfn
[ 47.960563] task: c000000febba1100 task.stack: c000000febc58000
[ 47.960564] NIP: c00000000032fedc LR: c0000000002f9c54 CTR: 0000000000000000
[ 47.960564] REGS: c000000febc5b800 TRAP: 0700 Tainted: G W (4.13.0-25-generic)
[ 47.960565] MSR: 9000000002029033 <SF,HV,VEC,EE,ME,IR,DR,RI,LE>
[ 47.960567] CR: 24024828 XER: 20040000
[ 47.960568] CFAR: c00000000032fa98 SOFTE: 1
[ 4

Regards
Praveen

== Comment: #4 - Praveen K. Pandey <email address hidden> - 2018-01-19 00:30:56 ==

== Comment: #6 - SRIKAR DRONAMRAJU <email address hidden> - 2018-01-29 04:42:31 ==
The above commits should fix the problem.

Please request Ubuntu to pick these commits.

commit 21a0e8c14bf61472723d2acc83f98ab35ff321b4
Author: Michael Ellerman <email address hidden>
Date: Tue Aug 1 20:29:24 2017 +1000

powerpc/mm/hash64: Make vmalloc 56T on hash

commit b5048de04b32104140e5b251005404c3e0d03ccd
Author: Michael Ellerman <email address hidden>
Date: Tue Aug 1 20:29:23 2017 +1000

powerpc/mm/slb: Move comment next to the code it's referring to

commit 63ee9b2ff9d306efaa61b04b8710fafe339ae441
Author: Michael Ellerman <email address hidden>
Date: Tue Aug 1 20:29:22 2017 +1000

powerpc/mm/book3s64: Make KERN_IO_START a variable

Tags:

Revision history for this message

bugproxy (bugproxy) wrote on 2018-02-06: sos report

sos report Edit (5.1 MiB, application/x-xz)

Default Comment by Bridge

tags:	added: architecture-ppc64le bugnameltc-163619 severity-high targetmilestone-inin---
Changed in ubuntu:
assignee:	nobody → Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)
affects:	ubuntu → kernel-package (Ubuntu)

Frank Heimes (fheimes) on 2018-02-06

affects:	kernel-package (Ubuntu) → linux (Ubuntu)
tags:	added: triage-g
Changed in ubuntu-power-systems:
importance:	Undecided → High
status:	New → Triaged
assignee:	nobody → Canonical Kernel Team (canonical-kernel-team)

Joseph Salisbury (jsalisbury) on 2018-02-08

Changed in linux (Ubuntu):
status:	New → Triaged
importance:	Undecided → High

Revision history for this message

Joseph Salisbury (jsalisbury) wrote on 2018-02-08:

Those three commits are in 18.04 -proposed:
https://launchpad.net/ubuntu/+source/linux/4.14.0-16.19

Changed in linux (Ubuntu Bionic):
assignee:	Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) → Joseph Salisbury (jsalisbury)
status:	Triaged → Fix Committed

Frank Heimes (fheimes) on 2018-02-08

Changed in ubuntu-power-systems:
status:	Triaged → Fix Committed

bugproxy (bugproxy) on 2018-02-12

tags:

added: targetmilestone-inin1804
removed: targetmilestone-inin---

Revision history for this message

bugproxy (bugproxy) wrote on 2018-02-28: Comment bridged from LTC Bugzilla

------- Comment From <email address hidden> 2018-02-28 01:04 EDT-------
Hi

Verified this issue on ubuntu 4.15.0-10 and and seems me issue resolved , system coming up without any call traces

Log:

ubuntu@system:~$ cat /proc/cmdline
root=UUID=a4f68354-a771-4c3e-8056-d878e330d758 ro default_hugepagesz=1GB hugepagesz=1GB hugepages=20 quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M@128M disable_radix
ubuntu@system:~$
ubuntu@system~$ uname -a
Linux system 4.15.0-10-generic #11-Ubuntu SMP Tue Feb 13 18:21:52 UTC 2018 ppc64le ppc64le ppc64le GNU/Linux
ubuntu@system:~$