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Commit 8d2f62cb authored by Eric Farman's avatar Eric Farman Committed by Greg Kroah-Hartman
Browse files

s390/cio: Fix how vfio-ccw checks pinned pages 



commit 24abf290 upstream.

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: default avatarEric Farman <farman@linux.ibm.com>
Message-Id: <20181002010235.42483-1-farman@linux.ibm.com>
Signed-off-by: default avatarCornelia Huck <cohuck@redhat.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent e3f725f5

drivers/s390/cio/vfio_ccw_cp.c

+1 −1
Original line number Diff line number Diff line
@@ -172,7 +172,7 @@ static bool pfn_array_table_iova_pinned(struct pfn_array_table *pat, 


	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;