Looking further this memory problem is already tracked in bug #785394, untouched for almost two years now.
So this bug here should serve as a reminder that the official documentation (https://help.ubuntu.com/lts/serverguide/kernel-crash-dump.html) is wrong. It should at least contain links to the bugs affecting linux-crashdump, like https://wiki.ubuntu.com/Kernel/CrashdumpRecipe#Release_specific_notes does, because when just following the documentation the crashdump functionality just does not work.
Looking further this memory problem is already tracked in bug #785394, untouched for almost two years now.
So this bug here should serve as a reminder that the official documentation (https:/ /help.ubuntu. com/lts/ serverguide/ kernel- crash-dump. html) is wrong. It should at least contain links to the bugs affecting linux-crashdump, like https:/ /wiki.ubuntu. com/Kernel/ CrashdumpRecipe #Release_ specific_ notes does, because when just following the documentation the crashdump functionality just does not work.