> From: Nicolin Chen <nicolinc@xxxxxxxxxx> > Sent: Sunday, October 15, 2023 3:47 PM > > TEST_LENGTH passing ".size = sizeof(struct _struct) - 1" expects -EINVAL > from "if (ucmd.user_size < op->min_size)" check in iommufd_fops_ioctl(). > This has been working when min_size is exactly the size of the structure. > > However, if the size of the structure becomes larger than min_size, i.e. > the passing size above is larger than min_size, that min_size sanity no > longer works. > > Since the first test in TEST_LENGTH() was to test that min_size sanity > routine, rework it to support a min_size calculation, rather than using > the full size of the structure. > > Signed-off-by: Nicolin Chen <nicolinc@xxxxxxxxxx> Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
