Commit 3fde85df authored by Dan Carpenter's avatar Dan Carpenter Committed by Greg Kroah-Hartman
Browse files

vt_ioctl: return -EFAULT on copy_from_user errors 



copy_from_user() returns the number of bytes remaining but we want to
return a negative error code here.

Signed-off-by: default avatarDan Carpenter <error27@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent c1bfffa9

drivers/char/vt_ioctl.c

+3 −1
Original line number Diff line number Diff line
@@ -1303,7 +1303,9 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, 
		if (!perm)

			goto eperm;

		ret = copy_from_user(&ui, up, sizeof(struct unimapinit));

		if (!ret)

		if (ret)

			ret = -EFAULT;

		else

			con_clear_unimap(vc, &ui);

		break;

	      }