Comment # 6 on bug 107889 from Mauro Carvalho Chehab

(In reply to Alex Deucher from comment #4)
> Can you bisect?  Also please attach your dmesg output.

Bisect didn't work. There is a regression between 4.17 and 4.18-rc4 on ext4fs
that causes it fail to mount a file system:

set 11 08:16:49 coco.lan kernel: EXT4-fs (dm-13): ext4_check_descriptors: Block
bitmap for group 0 overlaps block group descriptors
set 11 08:16:49 coco.lan kernel: EXT4-fs (dm-13): group descriptors corrupted!