4.15.0-1053 contains fatal nilfs2 kernel bug

[Paul R.]

The Bionic 4.15.0-1053 kernel package contains this nilfs2 bug:
https://marc.info/?t=157413851100002

and it specifically concerns this nilfs2 commit for 5.3 which was apparently backported:
https://marc.info/?l=linux-nilfs&m=157423529924889&w=2

My RPi 2B boots fine from nilfs2 on kernel 4.15.0-1052, but kernel -1053 oopses consistently and reproducibly, with exactly the same "nilfs_segctor_do_construct" pattern as in the above bug report.

Reverting to -1052 results in a working, bootable system again.

The -1053 changelog mentions:
"Bionic update: upstream stable patchset 2019-11-21 (LP: #1853519)"
which I suspect is the cause.

[Marcelo Cerri (mhcerri)]

Hi, Paul. Can you confirm if the problem also happens with the version currently in -proposed (4.15.0-1054.58)?

[Paul R. (paul-nz)]

Hi. Yes, I get the same crash with the 4.15.0-1054.58 proposed kernel. Log attached.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.