s390/cio: Fix how vfio-ccw checks pinned pages
We have two nested loops to check the entries within the pfn_array_table
arrays. But we mistakenly use the outer array as an index in our check,
and completely ignore the indexing performed by the inner loop.
Cc: stable@vger.kernel.org
Signed-off-by: Eric Farman <farman@linux.ibm.com>
Message-Id: <20181002010235.42483-1-farman@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
diff --git a/drivers/s390/cio/vfio_ccw_cp.c b/drivers/s390/cio/vfio_ccw_cp.c
index dbe7c7a..fd77e46 100644
--- a/drivers/s390/cio/vfio_ccw_cp.c
+++ b/drivers/s390/cio/vfio_ccw_cp.c
@@ -163,7 +163,7 @@
for (i = 0; i < pat->pat_nr; i++, pa++)
for (j = 0; j < pa->pa_nr; j++)
- if (pa->pa_iova_pfn[i] == iova_pfn)
+ if (pa->pa_iova_pfn[j] == iova_pfn)
return true;
return false;
