Public bug reported:
[Impact]
kexec-tools will not load a compressed kernel on arm64. Ubuntu ships compressed
kernel images on arm64 starting with 16.10 (and hwe kernels for 16.04). A
workaround is to manually decompress the kernel before loading it, but this is
not supported by the use-kexec-for-reboot-by-default feature of the kexec-tools
package.
[Test Case]
ubuntu@ubuntu:~$ sudo file /boot/vmlinuz-4.9.0-15-generic
/boot/vmlinuz-4.9.0-15-generic: gzip compressed data, max compression, from Unix
ubuntu@ubuntu:~$ sudo kexec -d -l /boot/vmlinuz-4.9.0-15-generic -t Image
arch_process_options:141: command_line: (null)
arch_process_options:143: initrd: (null)
arch_process_options:144: dtb: (null)
kernel: 0xffff8ff61010 kernel_size: 0x6ee18b
get_memory_ranges_iomem_cb: 0000000040000000 - 00000000ffffbfff : System RAM
get_memory_ranges_iomem_cb: 0000000100000000 - 000000013858ffff : System RAM
get_memory_ranges_iomem_cb: 0000000138750000 - 000000013bc1ffff : System RAM
get_memory_ranges_iomem_cb: 000000013c000000 - 000000013fffffff : System RAM
image_arm64_probe: Bad arm64 image header.
elf_arm64_probe: Not an ELF executable.
image_arm64_probe: Bad arm64 image header.
Cannot determine the file type of /boot/vmlinuz-4.9.0-15-generic
[Regression Risk]
kexec-tools did not support arm64 until zesty so, assuming the fix is localized
to arm64 code, regression risk is negligible.
** Affects: kexec-tools (Ubuntu)
Importance: Undecided
Status: New
** Description changed:
[Impact]
kexec-tools will not load a compressed kernel on arm64. Ubuntu ships
compressed kernel images on arm64 starting with 16.10 (and hwe kernels for
16.04). A workaround is to manually decompress the kernel before loading it,
but this is not supported by the use-kexec-for-reboot-by-default feature of the
kexec-tools package.
[Test Case]
- ubuntu@ubuntu:~$ sudo file /boot/vmlinuz-4.9.0-15-generic
+ ubuntu@ubuntu:~$ sudo file /boot/vmlinuz-4.9.0-15-generic
/boot/vmlinuz-4.9.0-15-generic: gzip compressed data, max compression, from
Unix
ubuntu@ubuntu:~$ sudo kexec -d -l /boot/vmlinuz-4.9.0-15-generic -t Image
arch_process_options:141: command_line: (null)
arch_process_options:143: initrd: (null)
arch_process_options:144: dtb: (null)
kernel: 0xffff8ff61010 kernel_size: 0x6ee18b
get_memory_ranges_iomem_cb: 0000000040000000 - 00000000ffffbfff : System RAM
get_memory_ranges_iomem_cb: 0000000100000000 - 000000013858ffff : System RAM
get_memory_ranges_iomem_cb: 0000000138750000 - 000000013bc1ffff : System RAM
get_memory_ranges_iomem_cb: 000000013c000000 - 000000013fffffff : System RAM
image_arm64_probe: Bad arm64 image header.
elf_arm64_probe: Not an ELF executable.
image_arm64_probe: Bad arm64 image header.
Cannot determine the file type of /boot/vmlinuz-4.9.0-15-generic
+
+ [Regression Risk]
+ kexec-tools did not support arm64 until zesty so, assuming the fix is
localized to arm64 code, regression risk is negligible.
--
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/1661363
Title:
Fails to load compressed kernels on arm64
Status in kexec-tools package in Ubuntu:
New
Bug description:
[Impact]
kexec-tools will not load a compressed kernel on arm64. Ubuntu ships
compressed kernel images on arm64 starting with 16.10 (and hwe kernels for
16.04). A workaround is to manually decompress the kernel before loading it,
but this is not supported by the use-kexec-for-reboot-by-default feature of the
kexec-tools package.
[Test Case]
ubuntu@ubuntu:~$ sudo file /boot/vmlinuz-4.9.0-15-generic
/boot/vmlinuz-4.9.0-15-generic: gzip compressed data, max compression, from
Unix
ubuntu@ubuntu:~$ sudo kexec -d -l /boot/vmlinuz-4.9.0-15-generic -t Image
arch_process_options:141: command_line: (null)
arch_process_options:143: initrd: (null)
arch_process_options:144: dtb: (null)
kernel: 0xffff8ff61010 kernel_size: 0x6ee18b
get_memory_ranges_iomem_cb: 0000000040000000 - 00000000ffffbfff : System RAM
get_memory_ranges_iomem_cb: 0000000100000000 - 000000013858ffff : System RAM
get_memory_ranges_iomem_cb: 0000000138750000 - 000000013bc1ffff : System RAM
get_memory_ranges_iomem_cb: 000000013c000000 - 000000013fffffff : System RAM
image_arm64_probe: Bad arm64 image header.
elf_arm64_probe: Not an ELF executable.
image_arm64_probe: Bad arm64 image header.
Cannot determine the file type of /boot/vmlinuz-4.9.0-15-generic
[Regression Risk]
kexec-tools did not support arm64 until zesty so, assuming the fix is
localized to arm64 code, regression risk is negligible.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/kexec-tools/+bug/1661363/+subscriptions
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