[PATCH 2/5] vt: fix unchecked __put_user() in tioclinux ioctls

2017-06-03 Thread Adam Borowski
Only read access is checked before this call. Actually, at the moment this is not an issue, as every in-tree arch does the same manual checks for VERIFY_READ vs VERIFY_WRITE, relying on the MMU to tell them apart, but this wasn't the case in the past and may happen again on some odd arch in the

[PATCH 2/5] vt: fix unchecked __put_user() in tioclinux ioctls

2017-06-03 Thread Adam Borowski
Only read access is checked before this call. Actually, at the moment this is not an issue, as every in-tree arch does the same manual checks for VERIFY_READ vs VERIFY_WRITE, relying on the MMU to tell them apart, but this wasn't the case in the past and may happen again on some odd arch in the