kASLR: unable to boot Linux v4.4.0-113.136 - v4.4.0-115.139 kernels; i386/x86_32 ("Spectre & Meltdown")

[daniel CURTIS]

Hello.

It seems, that 'kaslr' option is responsible for issues with system booting. The latest working kernel is v4.4.0-112.135. Every next release: v4.4.0-113.136 and v4.4.0-115.139 are unable to boot if 'kaslr' option is in use etc. Everything is described in my previous bug report (please see 1.), but I've decided to create a new one, because it seems, that some of the "Spectre & Meltdown" patches are not compatible with kASLR and are responsible for this regressions.

Thanks, best regards.

[1] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1748710

[daniel CURTIS (anoda)]

Hello. It seems, that everything is okay now and 'kaslr' option is working again. After update Linux kernel to the v4.4.0-117-generic (v4.4.114) version, system boots normally. So, some of the patches (see 1.) fixed this issue.

Thanks, best regards.
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1. https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/xenial/commit/?id=fc74a5c4a98418105b4b246b935e3be90d6a635c

[daniel CURTIS (anoda)]

Linux kernel v4.4.0-117-generic (v4.4.114) works okay and 'kaslr' option can be used again.

[Launchpad Janitor (janitor)]

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