** Description changed: + [Impact] + + kdump is not working on Pi (due to missing kernel configs). + + [Test Case] + + 1) Install and configure kdump-tools + 2) Reboot and verify the system is ready to kdump + 3) Trigger a crash and verify a valid crash dump is generated + + [Where Problems Could Occur] + + This enables additional core kernel code that could result in boot + failures and/or splats. Additionally, if kdump is enabled and a crash + occurs, the system could fail to boot into the kdump kernel and/or fail + to create a valid crashdump and/or fail to boot back into the regular + kernel. + + [Original Description] + As I understand this kdump-tools service is installed by default in Ubuntu 24.10 Beta. In my tests it seems to work as expected under x86_64 architecture booting with grub. But, with the Raspberry Pi 4, aarch64 architecture, it doesn't work. SYSTEM INFO: ------------ Model: Raspberry Pi 4 Model B Rev 1.4 Fresh install using this preinstalled image: https://cdimage.ubuntu.com/ubuntu/releases/24.10/beta/ubuntu-24.10-beta-preinstalled-desktop-arm64+raspi.img.xz # lsb_release -rd Description: Ubuntu Oracular Oriole (development branch) Release: 24.10 # uname -a Linux fpgrpitest 6.8.0-1004-raspi #4-Ubuntu SMP PREEMPT_DYNAMIC Sat Apr 20 02:29:55 UTC 2024 aarch64 aarch64 aarch64 GNU/Linux # lsb_release -rd Description: Ubuntu Oracular Oriole (development branch) Release: 24.10 root@fpgrpitest:~# apt-cache policy kdump-tools kdump-tools: - Installed: 1:1.10.3ubuntu3 - Candidate: 1:1.10.3ubuntu3 - Version table: - *** 1:1.10.3ubuntu3 500 - 500 http://ports.ubuntu.com/ubuntu-ports oracular/main arm64 Packages - 100 /var/lib/dpkg/status - + Installed: 1:1.10.3ubuntu3 + Candidate: 1:1.10.3ubuntu3 + Version table: + *** 1:1.10.3ubuntu3 500 + 500 http://ports.ubuntu.com/ubuntu-ports oracular/main arm64 Packages + 100 /var/lib/dpkg/status 1ST. PROBLEM SUMMARY: --------------------- kdump-tools service is enabled by default but it doesn't start because there is "no crashkernel= parameter in the kernel cmdline": Sep 22 07:09:09 fpgrpitest systemd[1]: Starting kdump-tools.service - Kernel crash dump capture service... Sep 22 07:09:09 fpgrpitest kdump-tools[1031]: Starting kdump-tools: Sep 22 07:09:09 fpgrpitest kdump-tools[1138]: * no crashkernel= parameter in the kernel cmdline Sep 22 07:09:09 fpgrpitest systemd[1]: Finished kdump-tools.service - Kernel crash dump capture service. - I suspect that it's because for the Raspberry Pi 4 the kernel boot parameters are stored in this file: + I suspect that it's because for the Raspberry Pi 4 the kernel boot parameters are stored in this file: /boot/firmware/cmdline.txt Notice that it doesn't use grub that is where kernel boot parameters are stored for X86_64 architecture. So I think it's needed to update the /boot/firmware/cmdline.txt file with the crashkernel parameter. - 2ND. PROBLEM SUMMARY: --------------------- - So, trying to fix the 1st problem I added the same crashkernel parameter used in X86_64 architecture to file /boot/firmware/cmdline.txt. + So, trying to fix the 1st problem I added the same crashkernel parameter used in X86_64 architecture to file /boot/firmware/cmdline.txt. So I added "crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M" but it doesn't work showing this error in the journalctl: Sep 23 16:17:43 fpgrpitest systemd[1]: Starting kdump-tools.service - Kernel crash dump capture service... Sep 23 16:17:43 fpgrpitest kdump-tools[919]: Starting kdump-tools: Sep 23 16:17:43 fpgrpitest kdump-tools[1004]: * Creating symlink /var/lib/kdump/vmlinuz Sep 23 16:17:43 fpgrpitest kdump-tools[1086]: kdump-tools: Generating /var/lib/kdump/initrd.img-6.8.0-1004-raspi Sep 23 16:17:43 fpgrpitest kdump-tools[1004]: * Creating symlink /var/lib/kdump/initrd.img Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: kexec_load failed: Function not implemented Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: entry = 0x1d9c03680 flags = 0xb70001 Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: nr_segments = 5 Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: segment[0].buf = 0xffff9c600010 Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: segment[0].bufsz = 0x1c84008 Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: segment[0].mem = 0x1d6e00000 Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: segment[0].memsz = 0x1d60000 Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: segment[1].buf = 0xffff9f200010 Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: segment[1].bufsz = 0x10940c2 Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: segment[1].mem = 0x1d8b60000 Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: segment[1].memsz = 0x1095000 Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: segment[2].buf = 0xaaaac88d9590 Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: segment[2].bufsz = 0xdda1 Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: segment[2].mem = 0x1d9bf5000 Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: segment[2].memsz = 0xe000 Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: segment[3].buf = 0xaaaac88e7960 Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: segment[3].bufsz = 0x3538 Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: segment[3].mem = 0x1d9c03000 Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: segment[3].memsz = 0x4000 Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: segment[4].buf = 0xaaaac88a1740 Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: segment[4].bufsz = 0x400 Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: segment[4].mem = 0x1f6dff000 Sep 23 16:17:45 fpgrpitest kdump-tools[5226]: segment[4].memsz = 0x1000 Sep 23 16:17:45 fpgrpitest kdump-tools[1004]: * failed to load kdump kernel Sep 23 16:17:45 fpgrpitest kdump-tools[5227]: failed to load kdump kernel Sep 23 16:17:45 fpgrpitest systemd[1]: Finished kdump-tools.service - Kernel crash dump capture service. - Seems that the current kernel is not ready/enabled for this tool. + Seems that the current kernel is not ready/enabled for this tool. Notice that this kernel used in Ubuntu 24.10 Beta for the Raspberry Pi is a very old version 6.8... AFAIK the kernel for Ubuntu 24.10 should be version 6.11... Don't know why.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2081746 Title: Ubuntu 24.10 Beta, Raspberry Pi 4: kdump-tools service not started, with errors To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kdump-tools/+bug/2081746/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
