Hi Hari, Thanks for the detailed bug report and patches. I've applied your patches and created a test 'kexec-tools' package. When you get a chance, could you download the .deb attached to this comment and confirm that it passes your test case with the patches applied?
The .deb can be installed with "sudo dpkg --install kexec- tools_2.0.16-1ubuntu3.1_ppc64el.deb". If everything checks out, I can get started on SRU'ing this fix to the affected series. ** Attachment added: "kexec-tools_2.0.16-1ubuntu3.1_ppc64el.deb" https://bugs.launchpad.net/ubuntu/+source/kexec-tools/+bug/1828187/+attachment/5265440/+files/kexec-tools_2.0.16-1ubuntu3.1_ppc64el.deb ** Changed in: kexec-tools (Ubuntu) Status: New => In Progress ** Changed in: ubuntu-power-systems Status: Triaged => In Progress -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to kexec-tools in Ubuntu. https://bugs.launchpad.net/bugs/1828187 Title: ibm,dynamic-memory property not found while loading kexec kernel (4.18.0-18-generic) Status in The Ubuntu-power-systems project: In Progress Status in kexec-tools package in Ubuntu: In Progress Bug description: == Comment: #0 - Hari Krishna Bathini <hbath...@in.ibm.com> - 2019-05-07 13:37:51 == ---Problem Description--- On 4.18.0-18-generic kernel, kexec load command throws below traces: --- Regular kexec load: root@ubuntu:~# kexec -l --append="`cat /proc/cmdline`" --initrd=/boot/initrd.img-`uname -r` /boot/vmlinux-`uname -r` /proc/device-tree/ibm,dynamic-reconfiguration-memory/ibm,dynamic-memory: No such file or directory Modified cmdline:BOOT_IMAGE=/boot/vmlinux-4.18.0-18-generic root=UUID=1aa9458c-3974-4cb4-9ab3-9ee03c0f4e5e ro crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M@128M root@ubuntu:~# --- KDump kernel load: root@ubuntu:~# kdump-config unload * unloaded kdump kernel root@ubuntu:~# kdump-config load * Creating symlink /var/lib/kdump/vmlinuz * Creating symlink /var/lib/kdump/initrd.img /proc/device-tree/ibm,dynamic-reconfiguration-memory/ibm,dynamic-memory: No such file or directory /proc/device-tree/ibm,dynamic-reconfiguration-memory/ibm,dynamic-memory: No such file or directory Modified cmdline:BOOT_IMAGE=/boot/vmlinux-4.18.0-18-generic root=UUID=1aa9458c-3974-4cb4-9ab3-9ee03c0f4e5e ro maxcpus=1 systemd.unit=kdump-tools-dump.service irqpoll noirqdistrib nousb elfcorehdr=158912K * loaded kdump kernel root@ubuntu:~# --- Contact Information = hbath...@in.ibm.com ---uname output--- Linux ubuntu 4.18.0-18-generic #19~18.04.1-Ubuntu SMP Fri Apr 5 10:21:11 UTC 2019 ppc64le ppc64le ppc64le GNU/Linux ---Additional Hardware Info--- na Machine Type = na ---Debugger--- A debugger is not configured ---Steps to Reproduce--- Load panic kernel or regular kernel with kexec command: kdump-config unload; kdump-config load OR kexec -l --append="`cat /proc/cmdline`" --initrd=/boot/initrd.img-`uname -r` /boot/vmlinux-`uname -r` Actual Result: DT files are not found while loading the kernel Expected result: kexec loads without any warning/error messages Userspace tool common name: kexec-tools The userspace tool has the following bit modes: 64-bit Userspace rpm: kexec-tools Userspace tool obtained from project website: na *Additional Instructions for hbath...@in.ibm.com: -Attach ltrace and strace of userspace application. == Comment: #1 - Hari Krishna Bathini <hbath...@in.ibm.com> - 2019-05-07 13:44:25 == Since v4.16 kernel, ibm,dynamic-memory-v2 Device Tree Property is supported in the kernel. This leaves kexec-tools on ppc64le broken without the below fix patches: https://git.kernel.org/pub/scm/utils/kernel/kexec/kexec-tools.git/commit/?id=c740fdb2048265551f77d3f0fe53b2fddc0c8489 ("kexec: add a helper function to add ranges") https://git.kernel.org/pub/scm/utils/kernel/kexec/kexec-tools.git/commit/?id=b10924a7da3ca48c04982cd23daf04882afb1a87 ("kexec/ppc64: add support to parse ibm, dynamic-memory-v2 property") To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1828187/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
