* [PULL 1/1] s390/cio: Fix how vfio-ccw checks pinned pages [not found] <20181002153748.13503-1-cohuck@redhat.com> @ 2018-10-02 15:37 ` Cornelia Huck 2018-10-03 13:14 ` Farhan Ali 0 siblings, 1 reply; 2+ messages in thread From: Cornelia Huck @ 2018-10-02 15:37 UTC (permalink / raw) To: Martin Schwidefsky, Heiko Carstens Cc: Halil Pasic, linux-s390, kvm, Eric Farman, stable, Cornelia Huck From: Eric Farman <farman@linux.ibm.com> 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> --- drivers/s390/cio/vfio_ccw_cp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/s390/cio/vfio_ccw_cp.c b/drivers/s390/cio/vfio_ccw_cp.c index dbe7c7ac9ac8..fd77e46eb3b2 100644 --- 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(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; -- 2.14.4 ^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PULL 1/1] s390/cio: Fix how vfio-ccw checks pinned pages 2018-10-02 15:37 ` [PULL 1/1] s390/cio: Fix how vfio-ccw checks pinned pages Cornelia Huck @ 2018-10-03 13:14 ` Farhan Ali 0 siblings, 0 replies; 2+ messages in thread From: Farhan Ali @ 2018-10-03 13:14 UTC (permalink / raw) To: Cornelia Huck, Martin Schwidefsky, Heiko Carstens Cc: Halil Pasic, linux-s390, kvm, Eric Farman, stable, Jason J. Herne On 10/02/2018 11:37 AM, Cornelia Huck wrote: > From: Eric Farman <farman@linux.ibm.com> > > 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> > --- > drivers/s390/cio/vfio_ccw_cp.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/s390/cio/vfio_ccw_cp.c b/drivers/s390/cio/vfio_ccw_cp.c > index dbe7c7ac9ac8..fd77e46eb3b2 100644 > --- 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(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; > Me and Jason have been looking at this code recently and we think this is the right fix. Reviewed-by: Farhan Ali <alifm@linux.ibm.com> Reviewed-by: Jason J. Herne <jjherne@linux.vnet.ibm.com> ^ permalink raw reply [flat|nested] 2+ messages in thread
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2018-10-02 15:37 ` [PULL 1/1] s390/cio: Fix how vfio-ccw checks pinned pages Cornelia Huck
2018-10-03 13:14 ` Farhan Ali
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