[BUG] UBIFS corruption on powerpc 32-bit targets

[Tomas Alvarez Vanoli]

>The 'sync' syscall will call ubifs_orphan_end_commit if the orhpan list
>is not empty.
>ubifs_sync_fs -> ubifs_run_commit -> do_commit -> ubifs_orphan_end_commit
>
>In ubifs_create, the new inode will be added into orphan list.
>ubifs_create -> ubifs_new_inode -> ubifs_add_orphan
>
>You can add some debug messages to check which condition is broken.

Alright, it was some user error :) I am able to reproduce it consistently now.

We will have to analyze what to do in the end about this, because we have no
control of what versions are being ran in what order in the field. Backwards
compatibility and being able to switch versions is important. Since this
volume does not use encryption and 3af2d3a8c56fe7dc24f60c4df0ab85b7ac941902
seems to be fixing a bug related only to encryption, we might just revert the
commit for the affected boards. Hopefully this will not generate other
unforseen consecuences.

I'll submit the fixes for mtd-utils tomorrow.

Thanks for all the help
Best Regards,
Tomas