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Message-Id: <20181016170523.580157844@linuxfoundation.org>
Date: Tue, 16 Oct 2018 19:05:50 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Eric Farman <farman@...ux.ibm.com>,
Cornelia Huck <cohuck@...hat.com>
Subject: [PATCH 4.18 120/135] s390/cio: Fix how vfio-ccw checks pinned pages
4.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Farman <farman@...ux.ibm.com>
commit 24abf2901b18bf941b9f21ea2ce5791f61097ae4 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@...r.kernel.org
Signed-off-by: Eric Farman <farman@...ux.ibm.com>
Message-Id: <20181002010235.42483-1-farman@...ux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/s390/cio/vfio_ccw_cp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/s390/cio/vfio_ccw_cp.c
+++ b/drivers/s390/cio/vfio_ccw_cp.c
@@ -163,7 +163,7 @@ static bool pfn_array_table_iova_pinned(
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;
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