The new image has a bad data extent item generation:
item 0 key (13631488 EXTENT_ITEM 4096) itemoff 16230 itemsize 53
refs 1 gen 16384 flags DATA
extent data backref root FS_TREE objectid 257 offset 0 count 1
Just like what older `btrfs check --init-extent-tree` could cause.
Reviewed-by: Su Yue <Damenly_Su@gmx.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>