> diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c > index 7440de4..971044d 100644 > --- a/block/scsi_ioctl.c > +++ b/block/scsi_ioctl.c > @@ -466,6 +466,12 @@ int sg_scsi_ioctl(struct request_queue *q, struct > gendisk *disk, fmode_t mode, > if (copy_from_user(req->cmd, sic->data, cmdlen)) > goto error; > > + /* > + * override the request header (opcode) to make sure that it matches > + * the first fetch from sic->data > + */ > + *((unsigned int *)req->cmd) = opcode; > + > if (in_len && copy_from_user(buffer, sic->data + cmdlen, in_len))
NAK. Just don't copy the byte twice. E.g. change things to not copy the first byte again.
