Hi All​


We've reproduced a 1-1 Kexec failure on Fedora 23 ppc64le Bare Metal Install (Stock OS). We also tested it on live host OS and also observed that it fails too.  


Here's all the stuff we tried:



Kexec From
​ Kexec To
​ Status
​Fedora 23
​Fedora 23 
​Failure
​Fedora 23     
​Ubuntu 15.04
​Failure
​Fedora 23
​Ubuntu 15.10 
​Failure


Kexec works on following ppc64le Stock Host OS:  Ubuntu 15.10, 15.04, CentOS 7.2 


Kexec Fails on following ppc64le Stock Host OS:    Fedora 23 , Debian 8.3 OS


Logs: 

System hang happens with random logs (More often with no logs at all). I've attached couple of snippets of logs we were able to obtain. 


Here are steps to reproduce:
a.

Install kexec-tools

b. Run: 

kexec -l vmlinuz —initrd=“initrd.img” —command-line=`cat /proc/cmdline`

c. Run:

kexec -e

d.

Host Console hangs indefinitely, without providing ability to get any logs.


Here are some details on Fedora Kernel and OS:


 Kernel Version:

[root@ppc-builder ~]# uname -a
Linux ppc-builder 4.2.6-301.fc23.ppc64le #1 SMP Thu Nov 26 19:44:15 UTC 2015 ppc64le ppc64le ppc64le GNU/Linux


OS Version:


[root@ppc-builder ~]# cat /etc/os-release
NAME=Fedora
VERSION="23 (Server Edition)"
ID=fedora
VERSION_ID=23
PRETTY_NAME="Fedora 23 (Server Edition)"
ANSI_COLOR="0;34"
CPE_NAME="cpe:/o:fedoraproject:fedora:23"
HOME_URL="https://fedoraproject.org/"
BUG_REPORT_URL="https://bugzilla.redhat.com/"
REDHAT_BUGZILLA_PRODUCT="Fedora"
REDHAT_BUGZILLA_PRODUCT_VERSION=23
REDHAT_SUPPORT_PRODUCT="Fedora"
REDHAT_SUPPORT_PRODUCT_VERSION=23
PRIVACY_POLICY_URL=https://fedoraproject.org/wiki/Legal:PrivacyPolicy
VARIANT="Server Edition"
VARIANT_ID=server