------- Comment From [email protected] 2016-09-27 04:52 EDT-------
I have installed the Hardware with the latest Ubuntu 16.10 kernel.

root@powerkvm3-lp1:~# uname -a
Linux powerkvm3-lp1 4.8.0-17-generic #19-Ubuntu SMP Sun Sep 25 06:35:40 UTC 
2016 ppc64le ppc64le ppc64le GNU/Linux
root@powerkvm3-lp1:~# cat /etc/os-release
NAME="Ubuntu"
VERSION="16.10 (Yakkety Yak)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 16.10"
VERSION_ID="16.10"
HOME_URL="http://www.ubuntu.com/";
SUPPORT_URL="http://help.ubuntu.com/";
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/";
PRIVACY_POLICY_URL="http://www.ubuntu.com/legal/terms-and-policies/privacy-policy";
VERSION_CODENAME=yakkety
UBUNTU_CODENAME=yakkety

root@powerkvm3-lp1:~# dpkg --list | grep linux-image-4.8.0-17
ii  linux-image-4.8.0-17-generic            4.8.0-17.19                         
     ppc64el      Linux kernel image for version 4.8.0 on PowerPC 64el SMP

Then again configured the kdump settings for triggering the crash.

root@powerkvm3-lp1:~# cat /proc/cmdline  | tail
root=UUID=85301ac1-2c85-426a-a9f2-fa87254fc9a7 ro quiet splash 
crashkernel=384M-:128M 
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M@32M

root@powerkvm3-lp1:~# kdump-config show
DUMP_MODE:        kdump
USE_KDUMP:        1
KDUMP_SYSCTL:     kernel.panic_on_oops=1
KDUMP_COREDIR:    /var/crash
crashkernel addr:
/var/lib/kdump/vmlinuz: symbolic link to /boot/vmlinux-4.8.0-17-generic
kdump initrd:
/var/lib/kdump/initrd.img: symbolic link to 
/var/lib/kdump/initrd.img-4.8.0-17-generic
current state:    ready to kdump

kexec command:
/sbin/kexec -p --command-line="root=UUID=85301ac1-2c85-426a-a9f2-fa87254fc9a7 
ro quiet splash irqpoll nr_cpus=1 nousb systemd.unit=kdump-tools.service" 
--initrd=/var/lib/kdump/initrd.img /var/lib/kdump/vmlinuz

root@powerkvm3-lp1:~# cat /proc/sys/kernel/sysrq
176
root@powerkvm3-lp1:~# sysctl -w kernel.sysrq=1
kernel.sysrq = 1
root@powerkvm3-lp1:~# cat /proc/sys/kernel/sysrq
1

------- Comment From [email protected] 2016-09-27 04:55 EDT-------
Now again triggered the crash with this new updated kernel.

root@powerkvm3-lp1:~# echo c > /proc/sysrq-trigger

Ubuntu Yakkety Yak (development branch) powerkvm3-lp1 hvc0

powerkvm3-lp1 login: [  548.081954] sysrq: SysRq : Trigger a crash
[  548.082049] Unable to handle kernel paging request for data at address 
0x00000000
[  548.082097] Faulting instruction address: 0xc0000000006de134
[  548.082162] Oops: Kernel access of bad area, sig: 11 [#1]
[  548.082212] SMP NR_CPUS=2048 NUMA PowerNV
[  548.082264] Modules linked in: btrfs xor raid6_pq uio_pdrv_genirq vmx_crypto 
ipmi_powernv powernv_op_panel ipmi_msghandler ibmpowernv uio powernv_rng 
leds_powernv ip_tables x_tables autofs4 crc32c_vpmsum lpfc be2net 
scsi_transport_fc ipr
[  548.082600] CPU: 15 PID: 4493 Comm: bash Not tainted 4.8.0-17-generic 
#19-Ubuntu
[  548.082677] task: c000000fb3363c00 task.stack: c000000fb3408000
[  548.082740] NIP: c0000000006de134 LR: c0000000006df218 CTR: c0000000006de100
[  548.082814] REGS: c000000fb340b990 TRAP: 0300   Not tainted  
(4.8.0-17-generic)
[  548.082888] MSR: 9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE>  CR: 28242222  
XER: 20000000
[  548.083078] CFAR: c000000000008750 DAR: 0000000000000000 DSISR: 42000000 
SOFTE: 1
GPR00: c0000000006df218 c000000fb340bc10 c0000000014e5e00 0000000000000063
GPR04: c000000ff93caca0 c000000ff93dfb40 c000003fff800000 0000000000029da0
GPR08: 0000000000000007 0000000000000001 0000000000000000 0000000000000001
GPR12: c0000000006de100 c000000001b28700 ffffffffffffffff 0000000022000000
GPR16: 0000000010170dc8 00000100103576d8 0000000010140f58 00000000100c7570
GPR20: 0000000000000000 000000001017dd58 0000000010153618 000000001017b608
GPR24: 00003fffc4c54f84 0000000000000001 c0000000013fe5d0 0000000000000004
GPR28: c0000000013fe990 0000000000000063 c0000000013b2590 0000000000000000
[  548.084077] NIP [c0000000006de134] sysrq_handle_crash+0x34/0x50
[  548.084141] LR [c0000000006df218] __handle_sysrq+0xe8/0x280
[  548.084191] Call Trace:
[  548.084220] [c000000fb340bc10] [c000000000e79720] 
_fw_tigon_tg3_bin_name+0x2f1a8/0x36f48 (unreliable)
[  548.084321] [c000000fb340bc30] [c0000000006df218] __handle_sysrq+0xe8/0x280
[  548.084398] [c000000fb340bcd0] [c0000000006df9c8] 
write_sysrq_trigger+0x78/0xa0
[  548.084487] [c000000fb340bd00] [c0000000003cf890] proc_reg_write+0xb0/0x110
[  548.084563] [c000000fb340bd50] [c00000000032b5dc] __vfs_write+0x6c/0xe0
[  548.084640] [c000000fb340bd90] [c00000000032cae4] vfs_write+0xd4/0x240
[  548.084716] [c000000fb340bde0] [c00000000032e7fc] SyS_write+0x6c/0x110
[  548.084792] [c000000fb340be30] [c000000000009584] system_call+0x38/0xec
[  548.084866] Instruction dump:
[  548.084905] 38427d00 7c0802a6 f8010010 f821ffe1 60000000 60000000 3d22001a 
3949d1e0
[  548.085033] 39200001 912a0000 7c0004ac 39400000 <992a0000> 38210020 e8010010 
7c0803a6
[  548.085238] ---[ end trace 16e61a504fe2b998 ]---
[  548.093025]
[  548.093110] Sending IPI to other CPUs
[  548.094228] IPI complete
[  548.096336] kexec: waiting for cpu 0 (physical 32) to enter OPAL
[  548.098569] kexec: waiting for cpu 2 (physical 34) to enter OPAL
-> smp_release_cpus()
spinning_secondaries = 127
<- smp_release_cpus()
[    1.077448] ELOG: log read failed for log-id=505fd8e7
[   25.275432] ipr 0001:04:00.0: FFF4: Disk device problem
[   25.275501] ipr: -----Failing Device Information-----
[   25.275547] ipr: World Wide Unique ID: 5000CCA01D0C29EC0000000000000000
[   25.275604] ipr: Device Resource Path: 00-04
[   25.275649] ipr: Primary Problem Description: Device detected hardware error
[   25.275716] ipr: Secondary Problem Description:  Status Check
[   25.275783] ipr: SCSI Sense Data:
[   25.275817] ipr: 00000000: 70000400 00000018 00000000 44000000
[   25.275873] ipr: 00000010: 00000000 F4400000 00000000 00000000
[   25.275929] ipr: SCSI Command Descriptor Block:
[   25.275974] ipr: 00000000: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF
[   25.276030] ipr: Additional IOA Data:
[   25.276065] ipr: 00000000: 455300CC 05B00017 00000000 84000000
[   25.276121] ipr: 00000010: 00000000 00000000 0B7D7FC0 00000000
[   25.276177] ipr: 00000020: 00000000 0B7D78A0 C8008000 00000000
[   25.276233] ipr: 00000030: 00000000 00000000 00000580 8F000000
[   25.276289] ipr: 00000040: 00168725 00000000 00000000 00000000
[   25.276345] ipr: 00000050: 00000000 00000000 00000000 00000000
[   25.276401] ipr: 00000060: 00000000 00000000 00000000 00000000
[   25.276457] ipr: 00000070: 00000000 00000000 00000000 00000000
[   25.276513] ipr: 00000080: 00000000 D4000001 80000000 FFFFFFFF
[   25.276569] ipr: 00000090: FFFFFFFF 00000000 00524FB2 00000000
[   25.276626] ipr: 000000A0: 00000000 00000000 01470224 00000000
[   25.276682] ipr: 000000B0: 0179BFC0 E0040000 E0000060 04448502
[   25.276738] ipr: 000000C0: 00000000 1B000000 01000000 00000000
[   25.276794] ipr: 000000D0: 43440010 1B000000 01000000 00000000
[   25.276850] ipr: 000000E0: 00000000 45480030 03001EA8 1B000000
[   25.276906] ipr: 000000F0: 04440000 04440000 02001E91 00000000
[   25.276963] ipr: 00000100: 04448500 02040200 01001EB8 00000000
[   25.277019] ipr: 00000110: 01440000 06290700 45540004 00002CB7
[   25.277075] ipr: 00000120: 43490018 00000002 0004FFFF FFFFFFFF
[   25.277131] ipr: 00000130: 5000CCA0 1D0C29ED 00001770 545209C0
[   27.294486] sd 1:2:0:0: [sda] Assuming drive cache: write through
[   27.326482] sd 1:2:1:0: [sdb] Assuming drive cache: write through
[   27.358497] sd 1:2:2:0: [sdc] Assuming drive cache: write through
[   27.422524] sd 1:2:3:0: [sdd] Assuming drive cache: write through
[   27.454526] sd 1:2:4:0: [sde] Assuming drive cache: write through
[   27.486534] sd 1:2:5:0: [sdf] Assuming drive cache: write through
[   27.522531] sd 1:2:6:0: [sdg] Assuming drive cache: write through
[   27.554510] sd 1:2:7:0: [sdh] Assuming drive cache: write through
[   27.586503] sd 1:2:8:0: [sdi] Assuming drive cache: write through
[   27.614464] sd 1:2:9:0: [sdj] Assuming drive cache: write through
/dev/sdg2: recovering journal
/dev/sdg2: clean, 197228/67042944 files, 5965915/267649024 blocks
[  126.163012] sd 1:0:11:0: [sdk] Asking for cache data failed
[  126.163070] sd 1:0:11:0: [sdk] Assuming drive cache: write through
Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10. 
 .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 
16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 
16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 
16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 
16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 
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.Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 1
 6.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 
16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 
16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 
16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 
16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 
16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 
16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  
 .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 
16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 
16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 
16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 
16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 
16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 
16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.
 Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 
16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 
16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 
16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
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16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.[  326.409071] reboot: Restarting system
Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10. 
 .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  
.Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 16.10.  .  .  .Ubuntu 
16.10.  .  .  .Ubuntu 16.10.  .  .  .

After the Ubuntu 16.10 OS is booted the vmcore is getting generated.

root@powerkvm3-lp1:~# cd /var/crash/
root@powerkvm3-lp1:/var/crash# ls
201609270334  kexec_cmd
root@powerkvm3-lp1:/var/crash# cd 201609270334/
root@powerkvm3-lp1:/var/crash/201609270334# ls
vmcore.201609270334

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https://bugs.launchpad.net/bugs/1627126

Title:
  Machine crashes to (initramfs) after Triggering a crash - missing
  crc32c module

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