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Message #11231
[Bug 1667239] Re: FlashGT Integration and Setup: fsbmc30: After 17th reboot of soft bootme, HTX & Linux errors seen with 256 virtual LUNs
** Changed in: linux (Ubuntu)
Importance: Undecided => High
** Changed in: linux (Ubuntu)
Status: New => Triaged
** Changed in: linux (Ubuntu)
Assignee: Taco Screen team (taco-screen-team) => Canonical Kernel Team (canonical-kernel-team)
** Also affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Yakkety)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1667239
Title:
FlashGT Integration and Setup: fsbmc30: After 17th reboot of soft
bootme, HTX & Linux errors seen with 256 virtual LUNs
Status in linux package in Ubuntu:
Triaged
Status in linux source package in Xenial:
New
Status in linux source package in Yakkety:
New
Bug description:
== Comment: #1 - Application Cdeadmin <cdeadmin@xxxxxxxxxx> - 2016-06-02 15:28:27 ==
==== State: Open by: anitrap on 01 June 2016 17:36:39 ====
Contact: Anitra Powell (anitrap@xxxxxxxxxx )
Backup: Dion Bell (belldi@xxxxxxxxxx)
Primary BMC (1603G):
=====================================================
# cat /proc/ractrends/Helper/FwInfo
FW_VERSION=2.13.91819
FW_DATE=Mar 10 2016
FW_BUILDTIME=10:59:31 CDT
FW_DESC=8335 SRC BUILD RR9 03102016
FW_PRODUCTID=1
FW_RELEASEID=RR9
FW_CODEBASEVERSION=2.X
#
PNOR (1603G):
========================
# ipmitool -H 127.0.0.1 -I lanplus -U ADMIN -P admin fru list 47
Product Name : OpenPOWER Firmware
Product Version : IBM-firestone-ibm-OP8_v1.7_1.62
Product Extra : hostboot-bc98d0b-1a29dff
Product Extra : occ-0362706-16fdfa7
Product Extra : skiboot-5.1.13
Product Extra : hostboot-binaries-43d5a59
Product Extra : firestone-xml-e7b4fa2-c302f0e
Product Extra : capp-ucode-105cb8f
Partition Info:
=================
ver 1.5.4.3 - OS, HTX, Firmware and Machine details
OS: GNU/Linux
OS Version: Ubuntu 16.04 LTS \n \l
Kernel Version: 4.4.8c0ffee0+
HTX Version: htxubuntu-396
Host Name: fsbmc30p1
Machine Serial No: 210995A
Machine Type/Model: 8335-GCA
root@fsbmc30p1:~# uname -a
Linux fsbmc30p1 4.4.8c0ffee0+ #2 SMP Tue May 24 10:50:26 CDT 2016 ppc64le ppc64le ppc64le GNU/Linux
FlashGT NVMe setup:
===================
1 FlashGT card in slot 1 running in superpipe mode with 128 LUNs per port (total of 256 LUNs).
lsscsi
[0:0:0:0] disk ATA ST1000NX0313 BE33 /dev/sda
[1:0:0:0] disk ATA ST1000NX0313 BE33 /dev/sdb
[4:0:0:0] disk NVMe SAMSUNG MZ1LV960 3011 /dev/sdc
[4:1:0:0] disk NVMe SAMSUNG MZ1LV960 3011 /dev/sdd
[5:0:0:0] cd/dvd AMI Virtual CDROM0 1.00 /dev/sr0
[5:0:0:1] cd/dvd AMI Virtual CDROM1 1.00 /dev/sr1
[5:0:0:2] cd/dvd AMI Virtual CDROM2 1.00 /dev/sr2
[5:0:0:3] cd/dvd AMI Virtual CDROM3 1.00 /dev/sr3
[6:0:0:0] disk AMI Virtual Floppy0 1.00 /dev/sde
[6:0:0:1] disk AMI Virtual Floppy1 1.00 /dev/sdf
[6:0:0:2] disk AMI Virtual Floppy2 1.00 /dev/sdg
[6:0:0:3] disk AMI Virtual Floppy3 1.00 /dev/sdh
[7:0:0:0] disk AMI Virtual HDisk0 1.00 /dev/sdi
[7:0:0:1] disk AMI Virtual HDisk1 1.00 /dev/sdj
[7:0:0:2] disk AMI Virtual HDisk2 1.00 /dev/sdk
[7:0:0:3] disk AMI Virtual HDisk3 1.00 /dev/sdl
[7:0:0:4] disk AMI Virtual HDisk4 1.00 /dev/sdm
lspci | grep -i acc
0004:01:00.0 Processing accelerators: IBM Device 0601 (rev 01)
ls -l /sys/class/cxl
total 0
lrwxrwxrwx 1 root root 0 May 31 13:27 afu0.0 -> ../../devices/pci0004:00/0004:00:00.0/0004:01:00.0/cxl/card0/afu0.0
lrwxrwxrwx 1 root root 0 May 31 13:27 afu0.0m -> ../../devices/pci0004:00/0004:00:00.0/0004:01:00.0/cxl/card0/afu0.0/afu0.0m
lrwxrwxrwx 1 root root 0 May 31 13:27 afu0.0s -> ../../devices/pci0004:00/0004:00:00.0/0004:01:00.0/cxl/card0/afu0.0/afu0.0s
lrwxrwxrwx 1 root root 0 May 31 13:27 card0 -> ../../devices/pci0004:00/0004:00:00.0/0004:01:00.0/cxl/card0
lscfg | grep afu
+ afu0.0 Slot1/card0/afu0.0
+ afu0.0m Slot1/card0/afu0.0/afu0.0m
+ afu0.0s Slot1/card0/afu0.0/afu0.0s
/opt/ibm/capikv/bin/cxlfstatus
CXL Flash Device Status
Found 0601 0004:01:00.0 Slot1
Device: SCSI Block Mode LUN WWID
sg2: 4:0:0:0, sdc, superpipe, 60025380025382463300046000000000
sg3: 4:1:0:0, sdd, superpipe, 60025380025382463300052000000000
dpkg -l | grep capi
4el no description given 3.0-1970-3042652 ppc6
4el no description given 3.0-1970-3042652 ppc6
root@fsbmc30p1:/tmp# dpkg -l | grep afu
ii afuimage 3.0-1970-3042652 all no description given
cat /opt/ibm/capikv/version.txt
1970-3042652
/opt/ibm/capikv/afu/cxl_afu_dump /dev/cxl/afu0.0m -v
AFU Version = 160525N1
NVMe0 Version = BTV73011
NVMe0 NEXT = BTV73011
NVMe0 STATUS = 0x702
NVMe1 Version = BTV73011
NVMe1 NEXT = BTV73011
NVMe1 STATUS = 0x702
cat /tmp/test_lun_mode
128
Problem:
===========
While running soft bootme (shutdown -r from OS every hour, I noticed htx errors after the 9th & 17th reboot of partition. At this point they seem like different issues so I am opening up 2 different defects. I've already opened up defect SW354759 for the first set of htx errors and assigned to htx_screen.
This defect is for issue that happened after 17th reboot (Jun 1 @
6am). On the 18th reboot (Jun 1 @ 7am), the shutdown -r command
failed... I had to manually power down system.
I guess I will open to surelock_screen first since it seems similar to
the one Dion opened up while running 128 virtual LUNs per port (defect
http://w3.rchland.ibm.com/projects/bestquest/?defect=SW353881) . For
this fail, other exercisers eventually failed also.
Test Info:
============
- running Soft bootme (shutdown -r every hour)
- mdt.bu + hxecom (GPUs were running). I copied a modified mdt.bu to another mdt file so I would not see any errors in htx after reboot.
Sample of HTX errors (for this defect)
==============================
/dev/sg2.53 Jun 1 06:26:53 2016 err=00000010 sev=4 hxesurelock
READCMP5 numopers= 20000 loop= 4956 blk=0x4eee
len= 4096 offset=0 Seed Values= 37882, 44181, 50758
Data Pattern Seed Values = 37882, 44182, 50758 LBA Fencepost = 0xb94a
cblk_read error - Device or resource busy
/dev/sg2.18 Jun 1 06:26:53 2016 err=00000010 sev=4 hxesurelock
READCMP9 numopers= 20000 loop= 1501 blk=0x93f1
len= 4096 offset=0 Seed Values= 37847, 44740, 50780
Data Pattern Seed Values = 37847, 44741, 50780 LBA Fencepost = 0xb275
cblk_read error - Device or resource busy
/dev/sg2.98 Jun 1 06:26:53 2016 err=00000010 sev=4 hxesurelock
READCMP5 numopers= 20000 loop= 10365 blk=0x86d5
len= 4096 offset=0 Seed Values= 37927, 41320, 50710
Data Pattern Seed Values = 37927, 41321, 50710 LBA Fencepost = 0xbc7c
cblk_read error - Device or resource busy
/dev/sg2.116 Jun 1 06:30:45 2016 err=00000005 sev=4 hxesurelock
RDCMP10 numopers= 20000 loop= 6383 blk=0xc33d
len= 4096 offset=0 Seed Values= 37945, 49039, 50726
Data Pattern Seed Values = 37945, 49040, 50726 LBA Fencepost = 0xd0b0
cblk_read error - Input/output error
/dev/fpu17 Jun 1 06:30:51 2016 err=0000000b sev=1 hxefpu64
pthread_create call failed with rc: 11, errno: 11, Resource temporarily unavailable
/dev/fpu17 Jun 1 06:30:51 2016 err=0000000b sev=1 hxefpu64
Hardware Exerciser stopped on an error
/dev/sctu43 Jun 1 06:30:51 2016 err=0000000b sev=1 hxesctu
pthread_create call failed with rc: 11, errno: 11, Resource temporarily unavailable
/dev/sctu43 Jun 1 06:30:51 2016 err=0000000b sev=1 hxesctu
Hardware Exerciser stopped on an error
Logs:
======
/gsa/ausgsa/home/a/n/anitrap/web/public/fsbmc30/softbootme_fail_1
/gsa/ausgsa/home/a/n/anitrap/web/public/fsbmc30/softbootme_fail_1/htxerr
/gsa/ausgsa/home/a/n/anitrap/web/public/fsbmc30/softbootme_fail_1/syslog
/gsa/ausgsa/home/a/n/anitrap/web/public/fsbmc30/softbootme_fail_1/kern.log
/gsa/ausgsa/home/a/n/anitrap/web/public/fsbmc30/softbootme_fail_1/bootme.log
sample of syslog during first htx error:
================================================
Jun 1 06:19:20 fsbmc30p1 systemd[1]: Started Cleanup of Temporary Directories.
Jun 1 06:25:01 fsbmc30p1 rsyslogd-2007: action 'action 10' suspended, next retry is Wed Jun 1 06:25:31 2016 [v8.16.0 try http://www.rsyslog.com/e/2007 ]
Jun 1 06:25:01 fsbmc30p1 CRON[99327]: (root) CMD (test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily ))
Jun 1 06:26:53 fsbmc30p1 CXLBLK[37882]: cflash_block_kern_mc.c,cblk_notify_mc_err,5504,LOG_EVENT reason 7 error_num = 0x607,for chunk->dev_name = /dev/sg2, chunk index = 0
Jun 1 06:26:53 fsbmc30p1 rsyslogd-2007: action 'action 10' suspended, next retry is Wed Jun 1 06:27:23 2016 [v8.16.0 try http://www.rsyslog.com/e/2007 ]
Jun 1 06:26:53 fsbmc30p1 CXLBLK[37847]: cflash_block_kern_mc.c,cblk_notify_mc_err,5504,LOG_EVENT reason 7 error_num = 0x607,for chunk->dev_name = /dev/sg2, chunk index = 0
Jun 1 06:26:53 fsbmc30p1 CXLBLK[37927]: cflash_block_kern_mc.c,cblk_notify_mc_err,5504,LOG_EVENT reason 7 error_num = 0x607,for chunk->dev_name = /dev/sg2, chunk index = 0
Jun 1 06:26:59 fsbmc30p1 CXLBLK[37961]: cflash_block_kern_mc.c,cblk_notify_mc_err,5504,LOG_EVENT reason 7 error_num = 0x607,for chunk->dev_name = /dev/sg3, chunk index = 0
Jun 1 06:26:59 fsbmc30p1 CXLBLK[37954]: cflash_block_kern_mc.c,cblk_notify_mc_err,5504,LOG_EVENT reason 7 error_num = 0x607,for chunk->dev_name = /dev/sg2, chunk index = 0
Jun 1 06:26:59 fsbmc30p1 CXLBLK[37887]: cflash_block_kern_mc.c,cblk_notify_mc_err,5504,LOG_EVENT reason 7 error_num = 0x607,for chunk->dev_name = /dev/sg2, chunk index = 0
Jun 1 06:26:59 fsbmc30p1 kernel: [ 1378.248405] hrtimer: interrupt took 200250 ns
sample from kern.log during fail:
=================================
Jun 1 06:08:11 fsbmc30p1 kernel: [ 250.251041] nvidia-uvm: Loaded the UVM driver in lite mode, major device number 241
Jun 1 06:26:59 fsbmc30p1 kernel: [ 1378.248405] hrtimer: interrupt took 200250 ns
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.764382] hxesurelock[40392]: unhandled signal 11 at 0000000000000024 nip 00003fff84602978 lr 00003fff84602974 code 30001
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.868242] Unable to handle kernel paging request for data at address 0x0000000c
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.868599] Faulting instruction address: 0xc00000000035e2b0
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.868865] Oops: Kernel access of bad area, sig: 11 [#1]
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.868928] SMP NR_CPUS=2048 NUMA PowerNV
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.868992] Modules linked in: nvidia_uvm(POE) iptable_filter ip_tables x_tables nvidia(POE) ipmi_devintf joydev input_leds mac_hid opal_prd ofpart cmdlinepart powernv_flash mtd at24 ipmi_powernv ipmi_msghandler uio_pdrv_genirq uio ibmpowernv powernv_rng binfmt_misc nfsd ib_iser auth_rpcgss rdma_cm iw_cm ib_cm nfs_acl ib_sa ib_mad lockd ib_core grace ib_addr sunrpc iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq raid1 raid0 multipath linear mlx4_en hid_generic usbhid hid uas usb_storage cxlflash ast bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm cxl vxlan mlx4_core ahci ip6_udp_tunnel udp_tunnel libahci mdio libcrc32c
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.870299] CPU: 80 PID: 40392 Comm: hxesurelock Tainted: P OE 4.4.8c0ffee0+ #2
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.870379] task: c000007935fe23a0 ti: c000007910810000 task.ti: c000007910810000
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.870476] NIP: c00000000035e2b0 LR: c00000000035e280 CTR: 0000000000000000
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.870552] REGS: c0000079108135e0 TRAP: 0300 Tainted: P OE (4.4.8c0ffee0+)
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.870642] MSR: 9000000100009033 <SF,HV,EE,ME,IR,DR,RI,LE> CR: 28053988 XER: 00000000
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.870852] CFAR: c000000000008468 DAR: 000000000000000c DSISR: 40000000 SOFTE: 1
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.870852] GPR00: c00000000035e280 c000007910813860 c000000001594600 0000000000000000
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.870852] GPR04: c000007823192400 000000000002574f 0000000000000001 0000000000000000
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.870852] GPR08: c0000079241b8a00 0000000000000000 00000000000044fb 65776f702f62696c
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.870852] GPR12: 2d656c3436637072 c00000000fb6f800 00000000464c457f 0000000000010c78
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.870852] GPR16: 0000000000000000 0000000000000039 d000000034fa04c5 0000000000010000
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.870852] GPR20: 00000000000000cd 0000000000000550 0000000000010000 00000000039e0000
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.870852] GPR24: 00003fffffffffff c000007910813af8 c000007823192600 c00000793f57b980
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.870852] GPR28: c00000793f573e80 00003fffffffffff 000000000000001f c000007926f29790
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.872149] NIP [c00000000035e2b0] elf_core_dump+0xd60/0x1300
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.872277] LR [c00000000035e280] elf_core_dump+0xd30/0x1300
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.872351] Call Trace:
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.872407] [c000007910813860] [c00000000035e280] elf_core_dump+0xd30/0x1300 (unreliable)
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.872527] [c000007910813a60] [c00000000036898c] do_coredump+0xcec/0x11e0
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.872625] [c000007910813c20] [c0000000000ce7a0] get_signal+0x540/0x7b0
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.872705] [c000007910813d10] [c000000000017344] do_signal+0x54/0x2b0
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.872785] [c000007910813e00] [c00000000001776c] do_notify_resume+0xbc/0xd0
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.872877] [c000007910813e30] [c000000000009838] ret_from_except_lite+0x64/0x68
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.872963] Instruction dump:
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.873004] 60000000 2fa30000 409effa8 e95f0050 39200000 794737e3 4082ffa4 e91f00a0
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.873148] 2fa80000 419e002c e92800f8 e9290000 <8129000c> 79279fe3 41820018 7948efe3
Jun 1 06:28:16 fsbmc30p1 kernel: [ 1454.884655] ---[ end trace f8abb6e0d0322daa ]---
gsave info:
==============
GSA Location: /gsa/ausgsa/projects/s/sift/hst/trial_data/Surelock/Ubuntu/flashgt/fsbmc30p1_ubuntu1604_FlashGT_bootme_test5/FAIL201606011024
<===== This is from RTC side description =====>
See the Discussion field for the initial comments from CQ.
</===== This is from RTC side description =====>
==== State: Open by: mpvageli on 02 June 2016 14:20:06 ====
Oops: Kernel access of bad area, sig: 11 [#1]
# ipmitool -H 127.0.0.1 -I lanplus -U ADMIN -P admin fru list 47
Product Name : OpenPOWER Firmware
Product Version : IBM-firestone-ibm-OP8_v1.7_1.62
Product Extra : hostboot-bc98d0b-1a29dff
Product Extra : occ-0362706-16fdfa7
Product Extra : skiboot-5.1.13
Product Extra : hostboot-binaries-43d5a59
Product Extra : firestone-xml-e7b4fa2-c302f0e
Product Extra : capp-ucode-105cb8f
== Comment: #9 - VIPIN K. PARASHAR <viparash@xxxxxxxxxx> - 2016-06-07 12:04:49 ==
root@fsbmc30p1:~# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04 LTS
Release: 16.04
Codename: xenial
root@fsbmc30p1:~# cat /etc/*release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04 LTS"
NAME="Ubuntu"
VERSION="16.04 LTS (Xenial Xerus)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 16.04 LTS"
VERSION_ID="16.04"
HOME_URL="http://www.ubuntu.com/";
SUPPORT_URL="http://help.ubuntu.com/";
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/";
UBUNTU_CODENAME=xenial
root@fsbmc30p1:~# uname -a
Linux fsbmc30p1 4.4.8c0ffee0+ #2 SMP Tue May 24 10:50:26 CDT 2016 ppc64le ppc64le ppc64le GNU/Linux
root@fsbmc30p1:~#
== Comment: #24 - VIPIN K. PARASHAR <viparash@xxxxxxxxxx> - 2016-07-07 07:14:05 ==
From kernel logs
===========
[ 7087.918089] device enP3p5s0f2 left promiscuous mode
[ 8801.190528] cxlflash 0007:00:00.0: send_tmf: TMF timed out!
[ 8806.190383] cxlflash 0007:00:00.0: send_tmf: TMF timed out!
[ 8816.507485] hxesurelock[14180]: unhandled signal 11 at 0000000000000024 nip 00003fff852c2ee8 lr 00003fff852c2938 code 30001
[ 8816.511368] hxesurelock[13501]: unhandled signal 11 at 0000000000000024 nip 00003fff890b2ee8 lr 00003fff890b2938 code 30001
[ 8816.526807] Unable to handle kernel paging request for data at address 0x0000000c
[ 8816.526928] Faulting instruction address: 0xc00000000035e2b0
[ 8816.530233] Unable to handle kernel paging request for data at address 0x0000000c
[ 8816.530596] Faulting instruction address: 0xc00000000035e2b0
3f:mon> t
[c000000686a13a60] c00000000036898c do_coredump+0xcec/0x11e0
[c000000686a13c20] c0000000000ce7a0 get_signal+0x540/0x7b0
[c000000686a13d10] c000000000017344 do_signal+0x54/0x2b0
[c000000686a13e00] c00000000001776c do_notify_resume+0xbc/0xd0
[c000000686a13e30] c000000000009838 ret_from_except_lite+0x64/0x68
--- Exception: 300 (Data Access) at 00003fff890b2ee8
SP (3fff83c2c490) is in userspace
3f:mon> r
R00 = c00000000035e280 R16 = 0000000000000000
R01 = c000000686a13860 R17 = 0000000000000042
R02 = c000000001594600 R18 = d000000021b104fa
R03 = 0000000000000000 R19 = 0000000000010000
R04 = c000002fb7463400 R20 = 00000000000000cd
R05 = 00000000000001bf R21 = 0000000000000628
R06 = 0000000000000001 R22 = 0000000000010000
R07 = 0000000000000000 R23 = 0000000000250000
R08 = c00000281af21500 R24 = 00003fffffffffff
R09 = 0000000000000000 R25 = c000000686a13af8
R10 = 00000000000044fb R26 = c000002fb7463800
R11 = 6c2d656c34366370 R27 = c000002ff0e05cc0
R12 = 756e672d78756e69 R28 = c000002ff0e05c40
R13 = c00000000fb65680 R29 = 00003fffffffffff
R14 = 00000000464c457f R30 = 0000000000000016
R15 = 0000000000010e70 R31 = c000002fb94bd3b8
pc = c00000000035e2b0 elf_core_dump+0xd60/0x1300
cfar= c000000000008468 slb_miss_realmode+0x50/0x78
lr = c00000000035e280 elf_core_dump+0xd30/0x1300
msr = 9000000100009033 cr = 28053828
ctr = 0000000000000000 xer = 0000000000000000 trap = 300
dar = 000000000000000c dsisr = 40000000
3f:mon>
hxesurelock process has segfaulted and kernel has crashed while
dumping core.
== Comment: #87 - Frederic Barrat <frederic.barrat@xxxxxxxxxx> - 2017-02-21 11:50:40 ==
Fix is in kernel v4.10:
bdecf76e319a29735d828575f4a9269f0e17c547
"cxl: Fix coredump generation when cxl_get_fd() is used"
We'd like to have it backported to 16.10 and 16.04 LTS.
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