Bug#922478: upgrade linux-image-4.9.0-8-armmp-lpae:armhf from 4.9.130-2 to 4.9.144-3 renders Bananapi and Lamobo R1 unbootable
Hi.
On Sun, Feb 17, 2019 at 07:38:18PM +0100, Cyril Brulebois wrote:
> Hi folks,
>
> Jürgen Löb <j.loeb@loeb-it.de> (2019-02-16):
> > Package: linux-image-4.9.0-8-armmp-lpae
> > Version: 4.9.144-3
> > Severity: serious
> >
> > Updated my Lamobo R1 board with apt update;apt upgrade
> >
> > After the update uboot is struck at "Starting kernel". There is no
> > further output after "Starting kernel". Same happens on Bananapi 1
> > board. Unfortunately there is no more useful information.
> […]
>
> Summing up, it looks like everybody in cc is confirming the regression
> happens between 4.9.130-2 and 4.9.144-3, with and without lpae, on
> various boards. Any chance you could check what happens with the
> 4.9.135-1 intermediary version that can be found on snapshot.debian.org?
Did this already in QEMU (virt board).
4.9.135-1 works.
4.9.144-1 (next one) is broken.
The problem is - 4.9.144-1 introduced large amount of changes, including
two Spectre mitigations.
My attempts to build a kernel with CONFIG_SPECTRE=n yielded unbootable
kernels, which may mean that:
a) Spectre mitigations are not related to the problem.
b) My kernel-rebuilding skill could use some improvement.
Reco
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