tree 8ba2815425201489eb73721fa405300449d82a64
parent c8c12792d5fe11375af54c6bbbbebdda105eb933
author Al Viro <viro@zeniv.linux.org.uk> 1571341164 +0100
committer Martin K. Petersen <martin.petersen@oracle.com> 1573016643 -0500

scsi: sg: sg_write(): get rid of access_ok()/__copy_from_user()/__get_user()

Just use plain copy_from_user() and get_user().  Note that while a
buf-derived pointer gets stored into ->dxferp, all places that actually use
the resulting value feed it either to import_iovec() or to
import_single_range(), and both will do validation.

Link: https://lore.kernel.org/r/20191017193925.25539-7-viro@ZenIV.linux.org.uk
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>