Public bug reported:
Based on upstream code commit explanation:
"""
On non-EFI systems, efi_info section of boot_params is zero filled resulting
in an erroneous message from kexec regarding "efi memory descriptor" version.
Caused by commit: e1ffc9e9a0769e1f54185003102e9bec428b84e8 "Passing efi related
data via setup_data"
# od -j 448 -N 32 -v -x /sys/kernel/boot_params/data
0000700 0000 0000 0000 0000 0000 0000 0000 0000
0000720 0000 0000 0000 0000 0000 0000 0000 0000
0000740
# kexec -l --reuse-cmdline --initrd=/boot/initrd-`uname -r`
/boot/vmlinuz-`uname -r`
efi memory descriptor version 0 is not supported!
"""
It was brought to my attention to some of our users are facing this:
----
## TRUSTY with kernel 4.4.0-83-generic
# /usr/sbin/kdump-config load
efi memory descriptor version 0 is not supported!
* loaded kdump kernel
/var/log/syslog:
Jul 18 13:37:06 xxxx kdump-config: /sbin/kexec -p
--command-line="BOOT_IMAGE=/boot/vmlinuz-4.4.0-83-generic
root=UUID=xxxxxxxx-20e4-4325-ad92-7aef2af0beac ro KDUMP_CMDLINE_APPEND=irqpoll
maxcpus=1 nousb irqpoll maxcpus=1 nousb"
--initrd=/boot/initrd.img-4.4.0-83-generic /boot/vmlinuz-4.4.0-83-generic
Jul 18 13:37:06 xxxx kdump-config: loaded kdump kernel
----
Despite the message of kdump being loaded, it doesn't look that it is
operational. Dump files could be generated using Xenial kdump-tools, but
not Trusty's.
** Affects: kexec-tools (Ubuntu)
Importance: Medium
Assignee: Rafael David Tinoco (inaddy)
Status: Confirmed
** Changed in: kexec-tools (Ubuntu)
Importance: Undecided => Medium
** Changed in: kexec-tools (Ubuntu)
Status: New => Confirmed
** Changed in: kexec-tools (Ubuntu)
Assignee: (unassigned) => Rafael David Tinoco (inaddy)
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https://bugs.launchpad.net/bugs/1705054
Title:
Trusty kexec-tools suffer from upstream code regression. Fix not
included.
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